:root {
    --red-imperial: #c8102e;
    --red-deep: #8b0000;
    --red-soft: #e63946;
    --gold: #d4af37;
    --gold-light: #f4e4a6;
    --ink: #1a1a2e;
    --ink-soft: #2d2d44;
    --paper: #fdf6e3;
    --paper-warm: #f5ead4;
    --cream: #fffaf0;
    --shadow: rgba(139, 0, 0, 0.15);
    --shadow-deep: rgba(26, 26, 46, 0.25);
    --site-background-image: url('assets/background-lantern-city.webp');
    --bg-overlay-color: 253, 246, 227;
    --bg-overlay-opacity: 0;

    /* Design tokens — système d'espacements, rayons et ombres */
    --radius-xs: 6px;
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
    --shadow-md: 0 8px 24px rgba(26, 26, 46, 0.10);
    --shadow-lg: 0 18px 48px rgba(26, 26, 46, 0.16);
    --shadow-xl: 0 28px 70px rgba(26, 26, 46, 0.22);
    --shadow-red: 0 12px 30px rgba(200, 16, 46, 0.22);
    --shadow-red-lg: 0 18px 48px rgba(200, 16, 46, 0.32);
    --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
    --ease-spring: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: 0.18s var(--ease-out);
    --transition-base: 0.28s var(--ease-out);
    --transition-slow: 0.5s var(--ease-spring);
    --gradient-primary: linear-gradient(135deg, #d11531 0%, #b00d24 50%, #8b0000 100%);
    --gradient-gold: linear-gradient(135deg, #e8c662, #d4af37 60%, #b8932e);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== Polish global — typo, focus, sélection, scrollbar ===== */
html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}
body {
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
    line-height: 1.55;
}

::selection {
    background: rgba(200, 16, 46, 0.22);
    color: var(--ink);
}

:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
    border-radius: 4px;
}
button:focus-visible,
.card:focus-visible,
.lesson-item:focus-visible,
.next-btn:focus-visible,
.action-btn:focus-visible,
.placement-option:focus-visible {
    outline-offset: 4px;
    box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.28);
}
input:focus-visible {
    outline: none;
}

/* Scrollbar fine et sobre */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(200, 16, 46, 0.35) transparent;
}
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
    background: rgba(200, 16, 46, 0.30);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
}
*::-webkit-scrollbar-thumb:hover {
    background: rgba(200, 16, 46, 0.55);
    background-clip: padding-box;
}

html, body {
    min-height: 100vh;
    font-family: 'Inter', -apple-system, sans-serif;
    color: var(--ink);
    background:
        linear-gradient(rgba(253, 246, 227, 0.24), rgba(253, 246, 227, 0.38)),
        var(--site-background-image) center / cover fixed no-repeat,
        linear-gradient(135deg, var(--paper) 0%, var(--paper-warm) 100%);
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        repeating-linear-gradient(45deg, transparent 0 20px, rgba(200, 16, 46, 0.015) 20px 21px),
        repeating-linear-gradient(-45deg, transparent 0 20px, rgba(212, 175, 55, 0.015) 20px 21px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.45;
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(var(--bg-overlay-color), var(--bg-overlay-opacity));
    pointer-events: none;
    z-index: 1;
    transition: background 0.2s ease;
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.1rem 3rem;
    border-bottom: 1px solid rgba(200, 16, 46, 0.12);
    backdrop-filter: saturate(160%) blur(14px);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
    background: linear-gradient(180deg, rgba(253, 246, 227, 0.94), rgba(253, 246, 227, 0.82));
    box-shadow: 0 1px 0 rgba(212, 175, 55, 0.15), 0 8px 24px rgba(26, 26, 46, 0.06);
}
@media (max-width: 900px) {
    .site-header { padding: 0.9rem 1.5rem; }
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    cursor: pointer;
    user-select: none;
}
.logo-cn {
    font-family: 'Noto Serif SC', serif;
    font-size: 2rem;
    font-weight: 900;
    color: var(--red-imperial);
    background: linear-gradient(135deg, var(--red-imperial), var(--red-deep));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    transition: transform var(--transition-base);
}
.logo:hover .logo-cn {
    transform: rotate(-4deg) scale(1.05);
}
.logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.3px;
    color: var(--ink);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}
.header-btn {
    border: 1px solid rgba(200, 16, 46, 0.18);
    background: var(--cream);
    color: var(--red-imperial);
    border-radius: var(--radius-sm);
    padding: 0.6rem 1rem;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast);
}
.header-btn:hover {
    border-color: var(--gold);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.plan-pill {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(212, 175, 55, 0.16);
    color: var(--ink);
    border: 1px solid rgba(212, 175, 55, 0.4);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

/* ===== Main ===== */
main {
    position: relative;
    z-index: 5;
    max-width: 1140px;
    margin: 0 auto;
    padding: 3rem 2rem 5rem;
    min-height: calc(100vh - 180px);
}
@media (max-width: 768px) {
    main { padding: 2rem 1.1rem 3rem; }
}

.screen {
    display: none;
    animation: fadeSlide 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.screen.active { display: block; }

@keyframes fadeSlide {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.screen-header {
    text-align: center;
    margin-bottom: 2.6rem;
    position: relative;
    background: linear-gradient(180deg, rgba(253, 246, 227, 0.92), rgba(253, 246, 227, 0.78));
    backdrop-filter: saturate(140%) blur(8px);
    -webkit-backdrop-filter: saturate(140%) blur(8px);
    border: 1px solid rgba(212, 175, 55, 0.20);
    border-radius: var(--radius-lg);
    padding: 2.2rem 2.5rem;
    box-shadow: var(--shadow-md);
}

.step-indicator {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gold);
    padding: 0.4rem 1rem;
    border: 1px solid var(--gold);
    border-radius: 20px;
    margin-bottom: 1.2rem;
}

.screen-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.7rem;
    letter-spacing: -0.6px;
    line-height: 1.15;
}

.screen-subtitle {
    font-size: 1.05rem;
    color: var(--ink-soft);
    opacity: 0.85;
    max-width: 60ch;
    margin: 0 auto;
    line-height: 1.55;
}
#selected-hsk {
    color: var(--red-imperial);
    font-weight: 600;
}

.retake-placement-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 1rem;
    padding: 0.45rem 1rem;
    border-radius: 999px;
    border: 1px solid rgba(212,175,55,0.5);
    background: transparent;
    color: var(--ink-soft);
    font: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    opacity: 0.75;
    transition: opacity 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.retake-placement-btn:hover {
    opacity: 1;
    border-color: var(--gold);
    color: var(--ink);
}
.retake-placement-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}
.retake-confirm {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
    justify-content: center;
    animation: fadeIn 0.18s ease;
}
.retake-confirm-text {
    font-size: 0.82rem;
    color: var(--ink-soft);
}
.retake-confirm-yes {
    padding: 0.3rem 0.85rem;
    border-radius: 999px;
    border: 1px solid var(--red-soft);
    background: transparent;
    color: var(--red-soft);
    font: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}
.retake-confirm-yes:hover {
    background: var(--red-soft);
    color: #fff;
}
.retake-confirm-no {
    padding: 0.3rem 0.85rem;
    border-radius: 999px;
    border: 1px solid rgba(45,45,68,0.3);
    background: transparent;
    color: var(--ink-soft);
    font: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
}
.retake-confirm-no:hover {
    border-color: var(--ink-soft);
    color: var(--ink);
}

.auth-panel,
.subscription-panel,
.profile-card {
    background: linear-gradient(180deg, rgba(255, 250, 240, 0.99), rgba(253, 246, 227, 0.96));
    border: 1px solid rgba(200, 16, 46, 0.10);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}
.auth-panel {
    max-width: 430px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    gap: 0.8rem;
}
.field-label {
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--ink-soft);
    letter-spacing: 1px;
    text-transform: uppercase;
}
.text-field {
    width: 100%;
    border: 1.5px solid rgba(200, 16, 46, 0.16);
    border-radius: var(--radius-sm);
    background: var(--cream);
    color: var(--ink);
    padding: 0.9rem 1rem;
    font: inherit;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.text-field:hover {
    border-color: rgba(200, 16, 46, 0.30);
}
.text-field:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.20);
    background: #fff;
}
.text-field::placeholder {
    color: rgba(45, 45, 68, 0.45);
}
.form-error {
    color: var(--red-imperial);
    font-size: 0.9rem;
    font-weight: 700;
}
.password-field-wrap {
    position: relative;
    width: 100%;
}
.password-field-wrap .text-field {
    padding-right: 3rem;
}
.password-toggle {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--ink-soft);
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.2s;
}
.password-toggle:hover {
    color: var(--red-imperial);
}
.subscription-panel {
    max-width: 720px;
    margin: 0 auto;
    padding: 2.4rem;
    text-align: center;
    display: grid;
    gap: 1rem;
}
.subscription-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}
.subscription-option {
    position: relative;
    min-height: 190px;
    padding: 1.4rem;
    border: 1px solid rgba(200, 16, 46, 0.16);
    border-radius: var(--radius-md);
    background: rgba(255, 250, 240, 0.7);
    color: var(--ink);
    cursor: pointer;
    font-family: inherit;
    display: grid;
    justify-items: center;
    align-content: center;
    gap: 0.55rem;
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}
.subscription-option:hover {
    transform: translateY(-3px);
    border-color: var(--gold);
    box-shadow: var(--shadow-md);
}
.subscription-option-featured {
    border-color: rgba(212, 175, 55, 0.65);
    box-shadow: 0 8px 22px rgba(212, 175, 55, 0.18);
}
.subscription-option-label {
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--ink-soft);
    font-size: 0.82rem;
}
.subscription-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--red-imperial);
    color: var(--cream);
    border-radius: 999px;
    padding: 0.28rem 0.6rem;
    font-size: 0.78rem;
    font-weight: 800;
}
.subscription-price {
    font-family: 'Noto Serif SC', serif;
    font-size: 3rem;
    color: var(--red-imperial);
    font-weight: 900;
    line-height: 1;
}
.subscription-period {
    color: var(--ink-soft);
}
.placement-panel {
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem;
    background:
        linear-gradient(180deg, rgba(255, 250, 240, 0.99), rgba(245, 234, 212, 0.99));
    border: 1px solid rgba(212, 175, 55, 0.28);
    border-radius: 14px;
    box-shadow: 0 22px 55px rgba(26, 26, 46, 0.16);
    display: grid;
    gap: 1.35rem;
    position: relative;
    overflow: hidden;
}
.placement-panel::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 5px;
    background: rgba(26, 26, 46, 0.12);
}
.placement-panel::after {
    content: '';
    position: absolute;
    inset: 0 auto auto 0;
    width: var(--placement-progress, 0%);
    height: 5px;
    background: linear-gradient(90deg, var(--red-imperial), var(--gold));
    transition: width 0.35s ease;
}
.placement-progress {
    color: var(--gold);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    position: relative;
    z-index: 1;
}
.placement-question {
    color: var(--ink);
    font-weight: 800;
    line-height: 1.35;
    display: grid;
    gap: 0.45rem;
    position: relative;
    z-index: 1;
    padding: 0.2rem 0 0.4rem;
}
.placement-skill {
    justify-self: start;
    padding: 0.28rem 0.65rem;
    border-radius: 999px;
    background: rgba(200, 16, 46, 0.08);
    color: var(--red-imperial);
    border: 1px solid rgba(200, 16, 46, 0.16);
    font-size: 0.74rem;
    font-weight: 900;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.placement-hanzi {
    font-family: 'Noto Serif SC', serif;
    color: var(--red-imperial);
    font-size: 2.8rem;
    font-weight: 900;
    line-height: 1.15;
}
.placement-pinyin {
    color: var(--ink-soft);
    font-size: 1.08rem;
    font-weight: 800;
    letter-spacing: 0.4px;
}
.placement-prompt {
    margin-top: 0.35rem;
    color: var(--ink);
    font-size: 1.2rem;
    font-weight: 700;
}
.placement-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
    position: relative;
    z-index: 1;
}
.placement-option {
    min-height: 58px;
    border: 1.5px solid rgba(200, 16, 46, 0.12);
    border-radius: var(--radius-sm);
    background: var(--cream);
    color: var(--ink);
    font: inherit;
    font-weight: 700;
    padding: 0.9rem 1rem;
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast), background var(--transition-fast);
    text-align: left;
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-sm);
}
.placement-option:hover {
    border-color: var(--gold);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: #fff;
}
.placement-option-key {
    width: 30px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(212, 175, 55, 0.16);
    color: var(--red-imperial);
    font-size: 0.82rem;
    font-weight: 900;
}
.placement-result {
    display: grid;
    gap: 1rem;
    justify-items: start;
    color: var(--ink);
    padding-top: 0.5rem;
    position: relative;
    z-index: 1;
}
.placement-result strong {
    font-family: 'Noto Serif SC', serif;
    color: var(--red-imperial);
    font-size: 1.6rem;
}
.placement-breakdown {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.7rem;
}
.placement-breakdown-row {
    padding: 0.75rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.48);
    border: 1px solid rgba(200, 16, 46, 0.1);
    display: grid;
    gap: 0.2rem;
}
.placement-breakdown-row span {
    color: var(--ink-soft);
    font-size: 0.78rem;
    font-weight: 800;
}
.placement-breakdown-row strong {
    color: var(--ink);
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 1rem;
}
/* ════════════════════════════════════════════════════════════
   PROFIL
   ════════════════════════════════════════════════════════════ */

.profile-layout {
    display: grid;
    grid-template-columns: minmax(300px, 1fr) minmax(340px, 1.3fr);
    gap: 1.4rem;
    align-items: start;
}

@media (max-width: 720px) {
    .profile-layout { grid-template-columns: 1fr; }
}

/* ── Carte générique ── */
.profile-card {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.6rem;
}

/* ── Carte identité ── */
.profile-identity-card {
    position: relative;
    overflow: visible;
}

/* Bandeau décoratif en haut de la carte identité */
.profile-identity-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 72px;
    background: linear-gradient(135deg, var(--red-imperial), var(--red-deep));
    border-radius: 14px 14px 0 0;
    opacity: 0.08;
}

/* ── Hero : avatar + nom/email ── */
.profile-hero {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    position: relative;
    z-index: 1;
}

.profile-avatar {
    width: 90px;
    height: 90px;
    flex-shrink: 0;
    border-radius: 50%;
    box-sizing: border-box;
    border: 3px solid var(--gold);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(200,16,46,0.18);
    background: var(--paper-warm);
}
.profile-avatar svg,
.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    display: block;
}

.profile-hero-info {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    min-width: 0;
}

.profile-name {
    font-family: 'Noto Serif SC', serif;
    color: var(--ink);
    font-size: 1.3rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.profile-email {
    color: var(--ink-soft);
    font-size: 0.85rem;
    opacity: 0.75;
    overflow-wrap: anywhere;
}
.profile-plan {
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    gap: 0.35rem;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    background: rgba(45, 134, 89, 0.1);
    border: 1px solid rgba(45, 134, 89, 0.25);
    color: #2a7a50;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
}

/* ── Sélecteur d'avatar ── */
.avatar-picker,
.background-picker {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}
.avatar-picker-label,
.background-picker-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--ink-soft);
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.6;
}
.avatar-picker-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
}
.background-picker-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}
.avatar-option {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 50%;
    border: 2.5px solid transparent;
    cursor: pointer;
    background: rgba(26,26,46,0.04);
    padding: 0;
    overflow: hidden;
    transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.avatar-option img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    display: block;
}
.avatar-option:hover {
    transform: scale(1.1);
    border-color: rgba(212,175,55,0.6);
}
.avatar-option.selected {
    border-color: var(--gold);
    box-shadow: 0 0 0 2.5px rgba(212,175,55,0.35);
    transform: scale(1.06);
}
.background-option {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 8px;
    border: 2.5px solid transparent;
    cursor: pointer;
    background: rgba(26,26,46,0.04);
    padding: 0;
    overflow: hidden;
    transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.background-option img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.background-option-solid {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}
.background-option:hover {
    transform: translateY(-2px);
    border-color: rgba(212,175,55,0.6);
}
.background-option.selected {
    border-color: var(--gold);
    box-shadow: 0 0 0 2.5px rgba(212,175,55,0.35);
}

/* ── Filtre d'opacité du fond ── */
.background-filter {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.4rem;
}
.background-filter-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.5rem;
}
.background-filter-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--ink-soft);
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.6;
}
.background-filter-value {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--red-imperial);
    font-variant-numeric: tabular-nums;
}
.background-filter-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(212,175,55,0.35), rgba(200,16,46,0.55));
    outline: none;
    cursor: pointer;
}
.background-filter-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--cream);
    border: 2px solid var(--red-imperial);
    box-shadow: 0 2px 6px rgba(139, 0, 0, 0.25);
    cursor: pointer;
    transition: transform 0.15s ease;
}
.background-filter-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}
.background-filter-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--cream);
    border: 2px solid var(--red-imperial);
    box-shadow: 0 2px 6px rgba(139, 0, 0, 0.25);
    cursor: pointer;
}

/* ── Boutons d'action du profil ── */
.profile-actions {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.profile-action-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1rem;
    border-radius: 10px;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1.5px solid transparent;
}

.profile-action-btn--logout {
    background: transparent;
    border-color: rgba(26,26,46,0.18);
    color: var(--ink-soft);
}
.profile-action-btn--logout:hover {
    border-color: var(--ink-soft);
    background: rgba(26,26,46,0.05);
    color: var(--ink);
}

.profile-action-btn--danger {
    background: transparent;
    border-color: rgba(192,57,43,0.3);
    color: #c0392b;
}
.profile-action-btn--danger:hover {
    background: rgba(192,57,43,0.06);
    border-color: #c0392b;
}

.profile-action-btn--manage {
    background: rgba(212,175,55,0.10);
    border-color: rgba(212,175,55,0.45);
    color: var(--red-deep);
}
.profile-action-btn--manage:hover {
    background: rgba(212,175,55,0.20);
    border-color: var(--gold);
}

/* ── Bandeau résiliation programmée ── */
.subscription-cancel-banner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    border-radius: 10px;
    background: rgba(212,175,55,0.12);
    border: 1px solid rgba(212,175,55,0.45);
    color: var(--ink);
    margin-bottom: 0.5rem;
}
.subscription-cancel-banner svg {
    flex-shrink: 0;
    color: var(--red-deep);
}
.subscription-cancel-banner > div { flex: 1; min-width: 0; }
.subscription-cancel-banner strong {
    display: block;
    font-size: 0.9rem;
    color: var(--red-deep);
    margin-bottom: 0.15rem;
}
.subscription-cancel-banner p {
    font-size: 0.8rem;
    color: var(--ink-soft);
    line-height: 1.4;
    margin: 0;
}
.profile-action-btn-link {
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--red-deep);
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    font: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease;
    flex-shrink: 0;
}
.profile-action-btn-link:hover {
    background: rgba(212,175,55,0.18);
}

/* ── Modale gestion abonnement ── */
.subscription-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(26,26,46,0.55);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}
.subscription-modal {
    background: var(--cream);
    border-radius: 16px;
    padding: 1.8rem 1.6rem 1.4rem;
    max-width: 460px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(26,26,46,0.35);
    position: relative;
}
.subscription-modal h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.3rem;
    color: var(--red-deep);
    margin-bottom: 1rem;
    padding-right: 1.5rem;
}
.subscription-modal-close {
    position: absolute;
    top: 0.6rem;
    right: 0.8rem;
    background: transparent;
    border: none;
    font-size: 1.6rem;
    line-height: 1;
    cursor: pointer;
    color: var(--ink-soft);
    padding: 0.2rem 0.5rem;
}
.subscription-modal-close:hover { color: var(--ink); }

.subscription-modal-summary {
    background: rgba(253,246,227,0.7);
    border: 1px solid rgba(139,0,0,0.12);
    border-radius: 10px;
    padding: 0.8rem 1rem;
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.subscription-modal-summary > div {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: 0.88rem;
}
.subscription-modal-summary span {
    color: var(--ink-soft);
}
.subscription-modal-summary strong {
    color: var(--ink);
    font-weight: 700;
}
.subscription-modal-text {
    font-size: 0.85rem;
    color: var(--ink-soft);
    line-height: 1.5;
    margin-bottom: 1rem;
}
.subscription-modal-text a {
    color: var(--red-imperial);
    text-decoration: underline;
}
.subscription-modal-error {
    background: rgba(192,57,43,0.08);
    border: 1px solid rgba(192,57,43,0.3);
    color: #c0392b;
    padding: 0.6rem 0.8rem;
    border-radius: 8px;
    font-size: 0.83rem;
    margin-bottom: 0.8rem;
}
.subscription-modal-actions {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}
.subscription-modal-actions .next-btn {
    flex: 1;
    min-width: 140px;
}
.subscription-modal-confirm {
    background: linear-gradient(135deg, #c0392b, #8b0000) !important;
}
.subscription-modal-confirm:hover {
    filter: brightness(1.1);
}
.subscription-modal-confirm:disabled {
    opacity: 0.6;
    cursor: wait;
}

/* ── Carte progression ── */
.profile-progress-card {
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
}

.profile-current {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: 1.2rem;
    border-bottom: 1px solid rgba(200,16,46,0.1);
}
.profile-current span {
    color: var(--ink-soft);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}
.profile-current strong {
    color: var(--red-imperial);
    font-family: 'Noto Serif SC', serif;
    font-size: 1.3rem;
    font-weight: 700;
}

.profile-progress-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.profile-progress-row {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.profile-progress-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.profile-progress-meta span {
    font-size: 0.85rem;
    color: var(--ink-soft);
    font-weight: 500;
}
.profile-progress-meta strong {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--ink);
}
.profile-progress-detail {
    font-size: 0.78rem;
    color: var(--ink-soft);
    opacity: 0.6;
}
.profile-progress-track {
    width: 100%;
    height: 8px;
    background: rgba(26, 26, 46, 0.08);
    border-radius: 999px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(26, 26, 46, 0.08);
}
.profile-progress-fill {
    display: block;
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--red-imperial), var(--gold));
    transition: width 0.6s var(--ease-spring);
    box-shadow: 0 1px 4px rgba(200, 16, 46, 0.25);
}

/* ── Avatar dans le header ── */
.header-btn-avatar {
    padding: 0;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.header-btn-avatar:hover {
    transform: scale(1.06);
    box-shadow: 0 0 0 2.5px rgba(212,175,55,0.5);
    border-radius: 50%;
}
.header-avatar-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-sizing: border-box;
    border: 2.5px solid var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--paper-warm);
    flex-shrink: 0;
}
.header-avatar-img svg,
.header-avatar-img img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    border-radius: 50%;
}

.back-btn {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: transparent;
    border: 1px solid transparent;
    color: var(--ink-soft);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}
.back-btn:hover {
    color: var(--red-imperial);
    background: rgba(200, 16, 46, 0.06);
    border-color: rgba(200, 16, 46, 0.18);
    transform: translateX(-2px);
}

/* ===== Cartes ===== */
.card-grid {
    display: grid;
    gap: 1.4rem;
}
.hsk-grid { grid-template-columns: repeat(3, 1fr); }
.theme-grid { grid-template-columns: repeat(3, 1fr); }

.card {
    background: rgba(255, 250, 240, 0.97);
    border: 1px solid rgba(200, 16, 46, 0.12);
    border-radius: var(--radius-lg);
    padding: 2.2rem 1.6rem 1.8rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.85rem;
    font-family: inherit;
    color: inherit;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-slow), box-shadow var(--transition-slow), border-color var(--transition-base);
    box-shadow: var(--shadow-md);
    isolation: isolate;
    min-height: 180px;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-slow);
    z-index: -1;
}

.card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.32) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.6s ease;
    pointer-events: none;
    z-index: -1;
}

.card > * { transition: color 0.4s ease; }

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-red-lg);
    border-color: var(--gold);
}
.card:hover::before { opacity: 1; }
.card:hover::after { opacity: 1; }
.card:hover > * { color: var(--cream); }
.card:hover .card-cn,
.card:hover .card-cn-small { color: var(--gold-light); }

.card-number {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--red-imperial);
    letter-spacing: 1.5px;
    line-height: 1;
}
.card-cn {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1;
}
.card-cn-small {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.2rem;
    color: var(--ink-soft);
    opacity: 1;
}
.card-label {
    font-size: 0.82rem;
    color: var(--ink-soft);
    letter-spacing: 1.2px;
    text-transform: uppercase;
    font-weight: 600;
    opacity: 0.85;
}
.hsk-progress {
    width: 100%;
    display: grid;
    gap: 0.35rem;
    margin-top: 0.5rem;
}
.hsk-progress-track {
    width: 100%;
    height: 7px;
    background: rgba(26, 26, 46, 0.12);
    border-radius: 999px;
    overflow: hidden;
}
.hsk-progress-fill {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--gold), #2d8659);
    border-radius: inherit;
    transition: width 0.5s ease;
}
.hsk-progress-meta {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--red-imperial);
    letter-spacing: 1px;
}
.hsk-complete .hsk-progress-meta {
    color: #2d8659;
}
.card:hover .hsk-progress-track {
    background: rgba(255, 250, 240, 0.26);
}
.card:hover .hsk-progress-meta {
    color: var(--cream);
}
.card-icon {
    font-size: 2.8rem;
    color: var(--gold);
    line-height: 1;
}
.card-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--ink);
}

/* ===== Exercice ===== */
.exercise-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
    margin-bottom: 3rem;
    position: relative;
}

.exercise-info {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    justify-content: center;
    align-items: center;
    text-align: center;
    width: 100%;
}

.exercise-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--ink);
    text-align: center;
    width: 100%;
}
.exercise-phase {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ink-soft);
    opacity: 1;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    text-align: center;
}

.progress-wrap {
    width: 100%;
    max-width: 500px;
    display: flex;
    align-items: center;
    gap: 1rem;
}
.progress-bar {
    flex: 1;
    height: 8px;
    background: rgba(26, 26, 46, 0.08);
    border-radius: 999px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(26, 26, 46, 0.08);
}
.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--gold), var(--red-imperial));
    border-radius: 999px;
    transition: width 0.6s var(--ease-spring);
    box-shadow: 0 1px 4px rgba(200, 16, 46, 0.25);
    position: relative;
}
.progress-fill::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.30), transparent);
    border-radius: inherit;
    pointer-events: none;
}
.progress-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--ink-soft);
    min-width: 50px;
    text-align: right;
}

.flashcard-container {
    perspective: 1500px;
    margin: 0 auto 3rem;
    max-width: 600px;
    height: 360px;
}

.flashcard {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.9s cubic-bezier(0.65, 0, 0.35, 1);
    cursor: pointer;
}
.flashcard.flipped { transform: rotateY(180deg); }

.flashcard-face {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(212, 175, 55, 0.32);
    overflow: hidden;
}

.flashcard-front {
    background:
        radial-gradient(circle at 20% 20%, rgba(212, 175, 55, 0.15), transparent 50%),
        linear-gradient(135deg, var(--cream), var(--paper-warm));
}
.flashcard-back {
    background:
        radial-gradient(circle at 80% 80%, rgba(212, 175, 55, 0.2), transparent 50%),
        linear-gradient(135deg, var(--red-imperial), var(--red-deep));
    color: var(--cream);
    transform: rotateY(180deg);
}

.pinyin {
    font-size: 1.4rem;
    color: var(--gold);
    letter-spacing: 4px;
    margin-bottom: 1rem;
    font-weight: 500;
    font-style: italic;
}
.hanzi {
    font-family: 'Noto Serif SC', serif;
    font-size: 6rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1;
    text-shadow: 0 4px 20px rgba(200, 16, 46, 0.15);
    margin-bottom: 1.5rem;
}
.hint {
    font-size: 0.85rem;
    color: var(--ink-soft);
    opacity: 0.6;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.translation-label {
    font-size: 0.8rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--gold-light);
    margin-bottom: 1rem;
    opacity: 0.85;
}
.translation {
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}
.example {
    font-size: 0.95rem;
    color: var(--gold-light);
    font-style: italic;
    text-align: center;
    max-width: 80%;
    line-height: 1.6;
}

.exercise-actions {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    flex-wrap: wrap;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.95rem 1.7rem;
    border-radius: var(--radius-sm);
    border: 2px solid;
    background: var(--cream);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: 0.4px;
    transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-fast), color var(--transition-fast);
    box-shadow: var(--shadow-sm);
}
.action-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
.action-btn:active {
    transform: translateY(-1px);
}
.action-icon {
    font-size: 1.3rem;
    font-weight: 700;
}

.action-bad { color: var(--red-deep); border-color: var(--red-deep); }
.action-bad:hover { background: var(--red-deep); color: var(--cream); }

.action-medium { color: var(--gold); border-color: var(--gold); }
.action-medium:hover { background: var(--gold); color: var(--cream); }

.action-good { color: #2d8659; border-color: #2d8659; }
.action-good:hover { background: #2d8659; color: var(--cream); }
.action-next { color: var(--ink); border-color: var(--gold); }
.action-next:hover { background: var(--gold); color: var(--ink); }
.hidden { display: none !important; }

/* ===== Liste des leçons ===== */
.lesson-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.1rem;
    max-width: 1080px;
    margin: 0 auto;
}

.lesson-item {
    background: rgba(255, 250, 240, 0.97);
    border: 1px solid rgba(200, 16, 46, 0.10);
    border-radius: var(--radius-md);
    padding: 1.5rem 1.25rem 1.3rem;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}
.lesson-item::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--red-imperial));
    opacity: 0.65;
    transition: opacity var(--transition-base), height var(--transition-base);
}
.lesson-item:hover {
    transform: translateY(-4px);
    border-color: var(--gold);
    box-shadow: var(--shadow-md);
}
.lesson-item:hover::before { opacity: 1; height: 4px; }
.lesson-item-complete {
    border-color: rgba(45, 134, 89, 0.38);
    background: linear-gradient(180deg, rgba(45, 134, 89, 0.08), var(--cream) 48%);
}
.lesson-item-complete::before {
    background: linear-gradient(90deg, #2d8659, var(--gold));
    opacity: 1;
}
.lesson-item-current {
    border: 2.5px solid var(--red-imperial);
    box-shadow:
        0 0 0 4px rgba(200, 16, 46, 0.12),
        0 12px 30px rgba(200, 16, 46, 0.22);
    transform: translateY(-2px);
    background: linear-gradient(180deg, rgba(212, 175, 55, 0.12), var(--cream) 60%);
    animation: lessonCurrentPulse 2.4s ease-in-out infinite;
}
.lesson-item-current::before {
    height: 6px;
    background: linear-gradient(90deg, var(--red-imperial), var(--gold), var(--red-imperial));
    opacity: 1;
}
.lesson-item-current::after {
    content: 'En cours';
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 2;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    background: var(--red-imperial);
    color: var(--cream);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    box-shadow: 0 4px 12px rgba(200, 16, 46, 0.35);
}
@keyframes lessonCurrentPulse {
    0%, 100% {
        box-shadow:
            0 0 0 4px rgba(200, 16, 46, 0.12),
            0 12px 30px rgba(200, 16, 46, 0.22);
    }
    50% {
        box-shadow:
            0 0 0 6px rgba(212, 175, 55, 0.20),
            0 14px 36px rgba(200, 16, 46, 0.30);
    }
}
.lesson-item-locked,
.gated-card {
    opacity: 0.58;
    cursor: not-allowed;
    filter: grayscale(0.15);
}
.lesson-item-locked:hover,
.gated-card:hover {
    transform: none;
    box-shadow: 0 4px 20px var(--shadow);
    border-color: rgba(200, 16, 46, 0.12);
}
.gated-card::after {
    content: 'Verrouille';
    position: absolute;
    top: 12px;
    right: 14px;
    z-index: 2;
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
    background: rgba(255, 250, 240, 0.92);
    color: var(--red-imperial);
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}
.conv-item-complete {
    border-color: rgba(45, 134, 89, 0.38);
    background: linear-gradient(180deg, rgba(45, 134, 89, 0.08), var(--cream) 54%);
}
.lesson-item-num {
    font-family: 'Noto Serif SC', serif;
    font-size: 0.85rem;
    color: var(--red-imperial);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.lesson-item-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--ink);
}
.lesson-item-subtitle {
    font-size: 0.85rem;
    color: var(--ink-soft);
    opacity: 0.75;
}
.lesson-item-preview {
    margin-top: 0.6rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.lesson-item-chip {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.1rem;
    color: var(--ink);
    background: rgba(212, 175, 55, 0.12);
    padding: 0.15rem 0.5rem;
    border-radius: 6px;
}
.lesson-item-status {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--gold);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.lesson-item-status.full { color: #2d8659; }

/* ===== Card désactivée ===== */
.card[disabled] {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* ===== Phase badge ===== */

/* ===== Dialogue ===== */
.dialogue-intro {
    text-align: center;
    margin-bottom: 1.5rem;
}
.dialogue-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.6rem;
    color: var(--ink);
    margin-bottom: 0.3rem;
}
.dialogue-context {
    font-size: 0.95rem;
    color: var(--ink-soft);
    font-style: italic;
}
.dialogue-bubbles {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.bubble {
    display: flex;
    gap: 0.8rem;
    align-items: flex-start;
    animation: fadeSlide 0.4s ease;
}
.bubble.right { flex-direction: row-reverse; }
.bubble-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Noto Serif SC', serif;
    font-weight: 600;
    color: var(--cream);
    background: var(--red-imperial);
}
.bubble.right .bubble-avatar { background: var(--gold); color: var(--ink); }

.bubble-content {
    background: var(--cream);
    border: 1px solid rgba(200, 16, 46, 0.12);
    border-radius: 14px;
    padding: 0.9rem 1.1rem;
    box-shadow: 0 4px 12px var(--shadow);
    max-width: 75%;
}
.bubble.right .bubble-content {
    background: linear-gradient(135deg, #fff8e7, var(--paper-warm));
    border-color: rgba(212, 175, 55, 0.3);
}
.bubble-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gold);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 0.3rem;
}
.bubble-cn {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.2rem;
    color: var(--ink);
    line-height: 1.5;
    margin-bottom: 0.2rem;
}
.bubble-py {
    font-size: 0.85rem;
    color: var(--ink-soft);
    font-style: italic;
    margin-bottom: 0.3rem;
    letter-spacing: 0.5px;
}
.bubble-fr {
    font-size: 0.9rem;
    color: var(--ink-soft);
    opacity: 0.85;
    border-top: 1px solid rgba(200, 16, 46, 0.08);
    padding-top: 0.4rem;
}

.bubble-audio-btn {
    flex-shrink: 0;
    align-self: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid rgba(200, 16, 46, 0.18);
    background: var(--cream);
    color: var(--red);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}
.bubble-audio-btn:hover {
    background: var(--red);
    color: #fff;
    transform: scale(1.05);
}
.bubble-audio-btn.playing {
    background: var(--red);
    color: #fff;
    box-shadow: 0 0 0 4px rgba(200, 16, 46, 0.18);
}
.bubble-audio-icon {
    width: 18px;
    height: 18px;
    fill: currentColor;
}
.bubble-audio-btn .icon-pause { display: none; }
.bubble-audio-btn.playing .icon-play { display: none; }
.bubble-audio-btn.playing .icon-pause { display: block; }

.dialogue-no-content {
    text-align: center;
    padding: 3rem;
    color: var(--ink-soft);
    background: rgba(212, 175, 55, 0.08);
    border-radius: 14px;
    border: 1px dashed var(--gold);
    max-width: 500px;
    margin: 0 auto;
}
.dialogue-no-content .icon {
    font-size: 2.5rem;
    color: var(--gold);
    margin-bottom: 0.5rem;
    display: block;
}

.dialogue-reader {
    padding-bottom: 1rem;
}

.conv-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}
.conv-item {
    background: var(--cream);
    border: 1px solid rgba(200, 16, 46, 0.12);
    border-radius: 14px;
    padding: 1.4rem 1.2rem;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    color: inherit;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 4px 15px var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-height: 220px;
}
.conv-item:hover {
    transform: translateY(-4px);
    border-color: var(--gold);
    box-shadow: 0 14px 35px rgba(200, 16, 46, 0.18);
}
.conv-item-num {
    font-size: 0.78rem;
    color: var(--red-imperial);
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}
.conv-item-title {
    font-size: 1.1rem;
    color: var(--ink);
    font-weight: 700;
}
.conv-item-cn {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.7rem;
    color: var(--gold);
    line-height: 1.15;
}
.conv-item-subtitle {
    color: var(--ink-soft);
    font-size: 0.9rem;
    line-height: 1.45;
    opacity: 0.78;
}
.conv-item-meta {
    margin-top: auto;
    padding-top: 0.8rem;
    color: var(--red-imperial);
    font-size: 0.8rem;
    font-weight: 700;
}

.conversation-title-cn {
    font-family: 'Noto Serif SC', serif;
    color: var(--gold);
    font-size: 1.4rem;
    margin-bottom: 0.4rem;
}
.conversation-questions {
    max-width: 720px;
    margin: 2rem auto 0;
    display: grid;
    gap: 1rem;
}
.conversation-questions-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.5rem;
    color: var(--ink);
    text-align: center;
}
.conversation-question {
    background: rgba(255, 250, 240, 0.72);
    border: 1px solid rgba(200, 16, 46, 0.12);
    border-radius: 14px;
    padding: 1rem;
    box-shadow: 0 4px 12px var(--shadow);
}
.conversation-question-title {
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.8rem;
}
.conversation-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.7rem;
}
.conversation-option {
    background: var(--cream);
    border: 1px solid rgba(200, 16, 46, 0.16);
    border-radius: 10px;
    padding: 0.8rem;
    color: var(--ink);
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
}
.conversation-option:hover:not(.locked) {
    border-color: var(--gold);
    transform: translateY(-2px);
}
.conversation-option.locked {
    cursor: default;
    opacity: 0.5;
}
.conversation-option.correct {
    background: linear-gradient(135deg, #2d8659, #1f6b44);
    border-color: #2d8659;
    color: var(--cream);
    opacity: 1;
}
.conversation-option.wrong {
    background: linear-gradient(135deg, var(--red-imperial), var(--red-deep));
    border-color: var(--red-deep);
    color: var(--cream);
    opacity: 1;
}
.conversation-result {
    max-width: 720px;
    margin: 2rem auto 0;
    padding: 1.4rem;
    background: linear-gradient(135deg, var(--cream), var(--paper-warm));
    border: 1px solid rgba(212, 175, 55, 0.35);
    border-radius: 14px;
    box-shadow: 0 10px 30px var(--shadow);
    text-align: center;
}
.conversation-score {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 1.2rem;
}
.conversation-score-label {
    color: var(--gold);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.conversation-score-value {
    font-family: 'Noto Serif SC', serif;
    color: var(--red-imperial);
    font-size: 2.4rem;
    font-weight: 900;
}
.conversation-score-detail {
    color: var(--ink-soft);
    font-size: 0.95rem;
}
.conversation-result-actions {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

/* ===== Phase intro ===== */
.phase-intro {
    text-align: center;
    padding: 2rem;
    max-width: 500px;
    margin: 0 auto;
}
.phase-intro-icon {
    font-size: 4rem;
    color: var(--red-imperial);
    margin-bottom: 1rem;
    font-family: 'Noto Serif SC', serif;
}
.phase-intro-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 2rem;
    color: var(--ink);
    margin-bottom: 0.5rem;
}
.phase-intro-text {
    color: var(--ink-soft);
    line-height: 1.6;
}

/* ===== Boutons icônes seules ===== */
.action-btn.icon-only {
    width: 80px;
    height: 80px;
    padding: 0;
    border-radius: 50%;
    justify-content: center;
}
.action-btn.icon-only .action-icon.big {
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1;
}

/* ===== Carte spéciale "Révision globale" ===== */
.review-card-cta {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, var(--red-imperial), var(--red-deep));
    color: var(--cream);
    border: none;
    padding: 1.6rem 1.8rem;
    border-radius: 16px;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 8px 25px rgba(200, 16, 46, 0.25);
    position: relative;
    overflow: hidden;
}
.review-card-cta::before {
    content: '复习';
    position: absolute;
    right: -10px;
    top: -20px;
    font-family: 'Noto Serif SC', serif;
    font-size: 8rem;
    color: rgba(255, 255, 255, 0.08);
    font-weight: 900;
    pointer-events: none;
}
.review-card-cta:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(200, 16, 46, 0.35);
}
.review-card-icon {
    font-family: 'Noto Serif SC', serif;
    font-size: 3rem;
    color: var(--gold);
    flex-shrink: 0;
    line-height: 1;
}
.review-card-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    z-index: 1;
}
.review-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}
.review-card-subtitle {
    font-size: 0.9rem;
    color: var(--gold-light);
    opacity: 0.9;
}

.conversation-card-cta {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, var(--ink), var(--ink-soft));
    color: var(--cream);
    border: none;
    padding: 1.5rem 1.8rem;
    border-radius: 16px;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 8px 25px rgba(26, 26, 46, 0.2);
    position: relative;
    overflow: hidden;
}
.conversation-card-cta::before {
    content: '对话';
    position: absolute;
    right: -6px;
    top: -22px;
    font-family: 'Noto Serif SC', serif;
    font-size: 8rem;
    color: rgba(255, 255, 255, 0.06);
    font-weight: 900;
    pointer-events: none;
}
.conversation-card-cta:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(26, 26, 46, 0.28);
}
.conversation-card-icon {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.5rem;
    color: var(--gold);
    flex-shrink: 0;
    line-height: 1;
}
.conversation-card-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    z-index: 1;
}
.conversation-card-title {
    font-size: 1.2rem;
    font-weight: 700;
}
.conversation-card-subtitle {
    font-size: 0.9rem;
    color: var(--gold-light);
    opacity: 0.92;
}

/* ===== Stats de révision dans le header ===== */
.review-stats {
    display: flex;
    gap: 1rem;
    margin-top: 0.6rem;
}
.review-stat {
    font-size: 0.85rem;
    color: var(--ink-soft);
    padding: 0.3rem 0.8rem;
    background: rgba(212, 175, 55, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(212, 175, 55, 0.25);
}
.review-stat .rs-num {
    font-weight: 700;
    color: var(--red-imperial);
    margin-right: 0.2rem;
}
#rs-known .rs-num { color: #2d8659; }
#rs-unknown .rs-num { color: var(--red-imperial); }

/* ===== Actions révision ===== */
.review-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}
.review-footer {
    text-align: center;
    margin-top: 0.5rem;
}

/* ===== Mémoire pastille (status sur flashcard) ===== */
.review-meta {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: var(--ink-soft);
    letter-spacing: 1px;
}
.review-priority-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin: 0 0.3rem;
    vertical-align: middle;
}

/* ===== Pinyin masqué dans phrases à trous ===== */
.blank-py {
    display: inline-block;
    color: var(--red-imperial);
    border-bottom: 2px dashed var(--red-imperial);
    padding: 0 0.3rem;
    font-style: normal;
    letter-spacing: 1px;
}

/* ===== Lesson Stage ===== */
.lesson-stage {
    margin-bottom: 2.5rem;
    min-height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-block {
    width: 100%;
    animation: fadeSlide 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.step-question {
    text-align: center;
    margin-bottom: 2rem;
}
.step-instruction {
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--red-imperial);
    font-weight: 700;
    margin-bottom: 0.8rem;
}
.step-prompt {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.4rem;
    color: var(--ink);
    font-weight: 600;
    margin-bottom: 0.4rem;
}
.step-prompt-pinyin {
    font-size: 1.1rem;
    color: var(--ink-soft);
    font-style: italic;
    letter-spacing: 2px;
}
.step-prompt-fr {
    font-size: 1.6rem;
    color: var(--ink);
    font-weight: 600;
}

/* QCM */
.qcm-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    max-width: 600px;
    margin: 0 auto;
}
.qcm-option {
    background: linear-gradient(180deg, var(--cream), rgba(253, 246, 227, 0.92));
    border: 1.5px solid rgba(200, 16, 46, 0.12);
    border-radius: var(--radius-md);
    padding: 1.3rem 1.5rem;
    font-family: inherit;
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast), background var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
}
.qcm-option:hover:not(.locked) {
    transform: translateY(-3px);
    border-color: var(--gold);
    box-shadow: var(--shadow-md);
    background: linear-gradient(180deg, #fff, var(--cream));
}
.qcm-option-hanzi {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.8rem;
    color: var(--ink);
    font-weight: 600;
}
.qcm-option-pinyin {
    font-size: 0.85rem;
    color: var(--ink-soft);
    font-style: italic;
    letter-spacing: 1px;
}
.qcm-option-fr {
    font-size: 1.1rem;
    color: var(--ink);
    font-weight: 500;
}
.qcm-option.correct {
    background: linear-gradient(135deg, #2d8659, #1f6b44);
    border-color: #2d8659;
}
.qcm-option.correct * { color: var(--cream) !important; }
.qcm-option.wrong {
    background: linear-gradient(135deg, var(--red-imperial), var(--red-deep));
    border-color: var(--red-deep);
}
.qcm-option.wrong * { color: var(--cream) !important; }
.qcm-option.locked { cursor: default; }
.qcm-option.locked:not(.correct):not(.wrong) { opacity: 0.4; }

/* Pinyin matching */
.pinyin-match-prompt {
    font-size: 2.5rem;
    text-align: center;
    color: var(--ink);
    font-style: italic;
    letter-spacing: 6px;
    margin-bottom: 2rem;
    font-weight: 600;
}

/* Fill blank */
.sentence-fill {
    text-align: center;
    font-family: 'Noto Serif SC', serif;
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    color: var(--ink);
    line-height: 1.5;
}
.sentence-fill .blank {
    display: inline-block;
    min-width: 80px;
    padding: 0 0.4rem;
    border-bottom: 3px dashed var(--red-imperial);
    color: var(--red-imperial);
}
.sentence-pinyin {
    text-align: center;
    color: var(--ink-soft);
    font-style: italic;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}
.sentence-fr {
    text-align: center;
    color: var(--ink-soft);
    margin-bottom: 2rem;
    font-size: 0.95rem;
    opacity: 0.8;
}

/* Sentence builder */
.builder-french {
    text-align: center;
    font-size: 1.2rem;
    color: var(--ink);
    margin-bottom: 0.5rem;
    font-style: italic;
}
.builder-pinyin {
    color: var(--gold);
    font-size: 1rem;
    font-style: italic;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}
.sentence-builder {
    max-width: 760px;
    margin: 0 auto;
}
.builder-target {
    min-height: 80px;
    border: 2px dashed rgba(200, 16, 46, 0.3);
    border-radius: 14px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    background: rgba(255, 250, 240, 0.5);
}
.builder-target.builder-error {
    border-color: var(--red-deep);
    background: rgba(200, 16, 46, 0.07);
    animation: tokenShake 0.28s ease;
}
.builder-placeholder {
    color: var(--ink-soft);
    font-size: 0.9rem;
    opacity: 0.62;
}
.builder-pool {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
}
.token {
    background: linear-gradient(180deg, var(--cream), rgba(253, 246, 227, 0.92));
    border: 1.5px solid rgba(212, 175, 55, 0.65);
    border-radius: var(--radius-sm);
    padding: 0.7rem 1.2rem;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.4rem;
    color: var(--ink);
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast), background var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
    box-shadow: var(--shadow-sm);
}
.token:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--red-imperial);
    background: #fff;
}
.token-selected {
    background: rgba(212, 175, 55, 0.16);
    border-color: var(--red-imperial);
}
.token.wrong-pick {
    border-color: var(--red-deep);
    background: rgba(200, 16, 46, 0.12);
    animation: tokenShake 0.28s ease;
}
@keyframes tokenShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}
.token-pinyin {
    font-family: 'Inter', sans-serif;
    font-size: 0.7rem;
    color: var(--ink-soft);
    font-style: italic;
}
.token.placed { opacity: 0.3; cursor: not-allowed; }
.token.placed:hover { transform: none; }
.builder-controls {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 0.8rem;
}
.builder-attempts {
    text-align: center;
    color: var(--ink-soft);
    font-size: 0.85rem;
    font-weight: 700;
}

/* Smart flashcard */
.smart-flashcard {
    perspective: 1500px;
    max-width: 600px;
    margin: 0 auto;
    height: 380px;
}
.smart-flashcard .flashcard {
    height: 100%;
}
.smart-flashcard .hanzi { font-size: 5rem; margin-bottom: 0.8rem; }
.smart-flashcard .pinyin { font-size: 1.3rem; margin-bottom: 0.5rem; }
.smart-flashcard .translation { font-size: 2.4rem; margin-bottom: 1rem; }

/* Lesson nav */
.lesson-nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
}
.next-btn {
    position: relative;
    background: var(--gradient-primary);
    color: var(--cream);
    border: none;
    padding: 0.95rem 2.3rem;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.98rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    cursor: pointer;
    box-shadow: var(--shadow-red);
    transition: transform var(--transition-base), box-shadow var(--transition-base), filter var(--transition-fast);
    overflow: hidden;
    isolation: isolate;
}
.next-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.16), transparent 60%);
    pointer-events: none;
    z-index: 0;
}
.next-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-red-lg);
    filter: brightness(1.06);
}
.next-btn:active {
    transform: translateY(0);
    filter: brightness(0.98);
}
.next-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    filter: grayscale(0.3);
}
.next-btn.secondary {
    background: transparent;
    color: var(--ink-soft);
    box-shadow: none;
    border: 1px solid rgba(200, 16, 46, 0.22);
}
.next-btn.secondary::before { display: none; }
.next-btn.secondary:hover {
    color: var(--red-imperial);
    border-color: var(--red-imperial);
    background: rgba(200, 16, 46, 0.04);
}

/* Feedback message */
.feedback {
    text-align: center;
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 10px;
    font-weight: 500;
    animation: fadeSlide 0.4s ease;
}
.feedback.success {
    background: rgba(45, 134, 89, 0.1);
    color: #2d8659;
    border: 1px solid rgba(45, 134, 89, 0.3);
}
.feedback.error {
    background: rgba(200, 16, 46, 0.08);
    color: var(--red-deep);
    border: 1px solid rgba(200, 16, 46, 0.2);
}
.feedback-detail {
    font-size: 0.9rem;
    margin-top: 0.4rem;
    opacity: 0.85;
}

/* Completion screen */
.complete-card {
    max-width: 600px;
    margin: 4rem auto 0;
    text-align: center;
    padding: 4rem 3rem;
    background:
        radial-gradient(circle at 50% 0%, rgba(212, 175, 55, 0.18), transparent 60%),
        linear-gradient(135deg, var(--cream), var(--paper-warm));
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(212, 175, 55, 0.30);
    position: relative;
}
.complete-seal {
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, var(--red-imperial), var(--red-deep));
    color: var(--gold-light);
    font-family: 'Noto Serif SC', serif;
    font-size: 3rem;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    border: 3px solid var(--gold);
    box-shadow: 0 10px 30px rgba(200, 16, 46, 0.4);
    transform: translateX(-50%) rotate(-5deg);
}
.complete-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.5rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--ink);
}
.complete-subtitle {
    color: var(--ink-soft);
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
}
.complete-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2.5rem;
}
.stat {
    padding: 1.2rem 0.5rem;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 12px;
    border: 1px solid rgba(200, 16, 46, 0.1);
}
.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--red-imperial);
    font-family: 'Noto Serif SC', serif;
}
.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--ink-soft);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-top: 0.3rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .site-header {
        padding: 1.2rem 1.5rem;
        gap: 1rem;
    }
    .header-actions {
        gap: 0.45rem;
    }
    .plan-pill {
        display: none;
    }
    .header-btn {
        padding: 0.55rem 0.75rem;
    }
    .screen-title { font-size: 2rem; }
    .hsk-grid, .theme-grid { grid-template-columns: repeat(2, 1fr); }
    .placement-options { grid-template-columns: 1fr; }
    .placement-panel { padding: 1.4rem; }
    .placement-hanzi { font-size: 2.1rem; }
    .placement-breakdown { grid-template-columns: repeat(2, 1fr); }
    .profile-layout { grid-template-columns: 1fr; }
    .profile-card:first-child { grid-template-columns: 1fr; text-align: center; justify-items: center; }
    .profile-plan { justify-self: center; }
    .profile-logout { justify-self: center; }
    .hanzi { font-size: 4rem; }
    .translation { font-size: 2rem; }
    .flashcard-container { height: 300px; }
    .conversation-card-cta { align-items: flex-start; }
    .conv-list { grid-template-columns: 1fr; }
    .bubble-content { max-width: 82%; }
    .conversation-options { grid-template-columns: 1fr; }
}


/* ── Overlay de chargement Firebase ─────────────────────────── */
#firebase-loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-deep, #0d0d1a);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}

#firebase-loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

/* ── Pied de page ────────────────────────────────────────────── */
.site-footer {
    position: relative;
    z-index: 10;
    margin-top: 4rem;
    border-top: 1px solid rgba(212, 175, 55, 0.20);
    background: linear-gradient(180deg, rgba(253, 246, 227, 0.7), rgba(245, 234, 212, 0.85));
    backdrop-filter: saturate(140%) blur(10px);
    -webkit-backdrop-filter: saturate(140%) blur(10px);
}
.footer-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 2rem 1.6rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.45rem;
}
.footer-brand-name {
    font-family: 'Noto Serif SC', serif;
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink-soft);
    letter-spacing: 0.5px;
}
.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.3rem 1.4rem;
}
.footer-link {
    font-size: 0.82rem;
    color: var(--ink-soft);
    text-decoration: none;
    opacity: 0.75;
    transition: opacity 0.15s ease;
}
.footer-link:hover {
    opacity: 1;
    text-decoration: underline;
}
.footer-copy {
    font-size: 0.75rem;
    color: var(--ink-soft);
    opacity: 0.5;
}