/* ═══════════════════════════════════════════════════════════════════════════
   CROUSZ — AUTH PAGES (Awwwards-grade)
   Editorial Brutalism × Soft Social
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Variables — Light mode (PROFESSIONAL INSTITUTIONAL) ─── */
:root {
    --bg: #FFFFFF;
    --surface: #FFFFFF;
    --surface-2: #F8F8F6;
    --surface-3: #EFEFED;
    --text: #1A1A1A;
    --muted: #717171;
    --muted-strong: #4A4A4A;
    --accent: #2E7D32;          /* Vert CROUSZ profond */
    --accent-2: #1A5276;        /* Bleu CROUSZ */
    --accent-deep: #1F5A24;
    --accent-blue-deep: #0F3B5F;
    --glow: rgba(46, 125, 50, 0.2);
    --border: rgba(10, 10, 11, 0.06);
    --border-strong: rgba(10, 10, 11, 0.12);
    --ease-editorial: cubic-bezier(0.65, 0, 0.35, 1);
    --ease-soft: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── Reset minimal ─── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body.auth-body {
    font-family: 'Exo', system-ui, sans-serif;
    font-weight: 400;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.005em;
}

/* ─── Noise overlay (SVG inline via data-URI) ─── */
.noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9998;
    opacity: 0.04;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='1'/></svg>");
}

/* ─── Cursor custom (desktop seulement) ─── */
.cursor-dot, .cursor-ring {
    position: fixed;
    top: 0; left: 0;
    pointer-events: none;
    z-index: 9999;
    border-radius: 50%;
    mix-blend-mode: difference;
    transform: translate(-50%, -50%);
    will-change: transform, width, height;
}
.cursor-dot {
    width: 6px; height: 6px;
    background: var(--accent);
    transition: width 0.25s var(--ease-soft), height 0.25s var(--ease-soft);
}
.cursor-ring {
    width: 36px; height: 36px;
    border: 1.5px solid var(--accent);
    opacity: 0.5;
    transition: width 0.35s var(--ease-soft), height 0.35s var(--ease-soft), opacity 0.25s ease, border-color 0.25s ease;
}
.cursor-dot.is-hover { width: 12px; height: 12px; }
.cursor-ring.is-hover { width: 56px; height: 56px; opacity: 1; border-color: var(--accent); }

/* Masquer sur mobile */
@media (hover: none), (pointer: coarse) {
    .cursor-dot, .cursor-ring { display: none !important; }
}

/* Masquer curseur natif sur interactifs (desktop fine pointer) */
@media (hover: hover) and (pointer: fine) {
    body.auth-body { cursor: none; }
    body.auth-body a, body.auth-body button, body.auth-body input,
    body.auth-body label, body.auth-body [role="button"] { cursor: none; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   LAYOUT SPLIT
   ═══════════════════════════════════════════════════════════════════════════ */

.auth-split {
    display: grid;
    grid-template-columns: 1fr;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

@media (min-width: 768px) {
    .auth-split { grid-template-columns: 50% 50%; }
}
@media (min-width: 1024px) {
    .auth-split { grid-template-columns: 55% 45%; }
}

/* Light mode: réduire colonne gauche pour moins de blanc */
[data-theme="light"] .auth-split {
    grid-template-columns: 1fr;
}
@media (min-width: 768px) {
    [data-theme="light"] .auth-split { grid-template-columns: 48% 52%; }
}
@media (min-width: 1024px) {
    [data-theme="light"] .auth-split { grid-template-columns: 40% 60%; }
}
@media (min-width: 1400px) {
    [data-theme="light"] .auth-split { grid-template-columns: 38% 62%; }
}
@media (min-width: 1600px) {
    .auth-split {
        max-width: 1600px;
        margin: 0 auto;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   LEFT — Artistic column
   ═══════════════════════════════════════════════════════════════════════════ */

.auth-left {
    position: relative;
    overflow: hidden;
    padding: 3rem 1.5rem 2rem;
    min-height: 40vh;
    display: flex;
    flex-direction: column;
}
@media (min-width: 768px) {
    .auth-left {
        min-height: 100vh;
        padding: 3rem 2.5rem;
    }
}
@media (min-width: 1280px) {
    .auth-left {
        padding: 3.5rem 4.5rem;
    }
}

/* ─── Mesh gradient animé ─── */
.mesh-bg {
    position: absolute;
    inset: -50%;
    z-index: 0;
    pointer-events: none;
    filter: blur(80px) saturate(130%);
    opacity: 0.9;
    background:
        radial-gradient(circle at 20% 30%, rgba(74, 222, 128, 0.45) 0%, transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(59, 130, 246, 0.38) 0%, transparent 45%),
        radial-gradient(circle at 60% 20%, rgba(46, 125, 50, 0.35) 0%, transparent 50%),
        radial-gradient(circle at 30% 90%, rgba(26, 82, 118, 0.4) 0%, transparent 40%);
    animation: meshFloat 18s ease-in-out infinite;
}

/* Light mode mesh: étend sur toute la surface + pattern d'incrustration blanc/noir */
[data-theme="light"] .mesh-bg {
    inset: -60%;
    filter: blur(120px) saturate(60%);
    opacity: 0.4;
    background:
        /* Pattern d'incrustration gravée (blanc/noir) */
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.008) 2px,
            rgba(0, 0, 0, 0.008) 4px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.04) 2px,
            rgba(255, 255, 255, 0.04) 4px
        ),
        /* Mesh subtil */
        radial-gradient(circle at 20% 30%, rgba(46, 125, 50, 0.12) 0%, transparent 55%),
        radial-gradient(circle at 80% 70%, rgba(26, 82, 118, 0.08) 0%, transparent 55%),
        radial-gradient(circle at 60% 20%, rgba(46, 125, 50, 0.06) 0%, transparent 60%),
        radial-gradient(circle at 30% 90%, rgba(26, 82, 118, 0.07) 0%, transparent 50%);
}
@keyframes meshFloat {
    0%, 100%   { transform: translate(0, 0) scale(1); }
    33%        { transform: translate(4%, -3%) scale(1.08); }
    66%        { transform: translate(-3%, 4%) scale(0.95); }
}

/* Overlay subtil noir sur mesh pour réduire saturation */
.mesh-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 10, 11, 0.35) 0%, rgba(10, 10, 11, 0.7) 100%);
    z-index: 1;
    pointer-events: none;
}

/* Light mode: overlay light subtil avec pattern africain */
[data-theme="light"] .mesh-overlay {
    background: linear-gradient(135deg, rgba(46, 125, 50, 0.05) 0%, rgba(26, 82, 118, 0.08) 100%);
    background-image:
        url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='60'><defs><pattern id='p' x='0' y='0' width='60' height='60' patternUnits='userSpaceOnUse'><path d='M30 0l15 8.66v17.32L30 35l-15-8.66V8.66L30 0' fill='none' stroke='%232E7D32' stroke-width='0.5' opacity='0.08'/></pattern></defs><rect width='100%' height='100%' fill='url(%23p)'/></svg>");
}

.auth-left-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 1.5rem;
}

/* ─── Brand wordmark ─── */
.brand {
    font-family: 'Exo', system-ui, sans-serif;
    font-style: italic;
    font-weight: 600;
    font-size: 1.75rem;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.03em;
    display: inline-flex;
    align-items: baseline;
    gap: 0.1rem;
    transition: opacity 0.3s ease;
}
.brand:hover { opacity: 0.75; }
.brand span { color: var(--accent); font-size: 0.5em; transform: translateY(-0.5em); }

/* ─── Display title éditorial ─── */
.display-title {
    font-family: 'Exo', system-ui, sans-serif;
    font-weight: 500;
    font-size: clamp(2.75rem, 7vw, 7rem);
    line-height: 0.95;
    letter-spacing: -0.04em;
    color: var(--text);
    margin: 0;
    max-width: 12ch;
}
.display-title em {
    font-style: italic;
    font-weight: 600;
    color: var(--accent);
    display: inline-block;
    position: relative;
}
.display-title em::after {
    content: '';
    position: absolute;
    left: 0; right: 0;
    bottom: -0.05em;
    height: 2px;
    background: var(--accent);
    transform-origin: left;
    transform: scaleX(0);
    animation: underlineSlide 1.2s var(--ease-editorial) 1.2s forwards;
}
@keyframes underlineSlide {
    to { transform: scaleX(1); }
}

/* ─── Live counter ─── */
.live-counter {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.55rem 1rem 0.55rem 0.8rem;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(16px) saturate(120%);
    -webkit-backdrop-filter: blur(16px) saturate(120%);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--muted-strong);
    align-self: flex-start;
    width: max-content;
    max-width: 100%;
}
.live-counter .pulse-dot {
    position: relative;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 0 var(--glow);
    animation: pulseDot 2s ease-in-out infinite;
    flex-shrink: 0;
}
@keyframes pulseDot {
    0%, 100% { box-shadow: 0 0 0 0 var(--glow); }
    50%      { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
}
.live-counter .num {
    font-family: 'Space Grotesk', monospace;
    font-weight: 600;
    color: var(--text);
    font-variant-numeric: tabular-nums;
    transition: color 0.4s ease;
}
.live-counter .num.flash { color: var(--accent); }

/* ─── Floating cards glassmorphism ─── */
.floating-cards {
    position: relative;
    margin-top: auto;
    display: none;
    min-height: 280px;
}
@media (min-width: 768px) {
    .floating-cards { display: block; }
}

.fcard {
    position: absolute;
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border: 1px solid var(--border-strong);
    border-radius: 22px;
    padding: 1.1rem 1.25rem;
    width: 290px;
    max-width: 80%;
    box-shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.6);
    transform: translate3d(0, 0, 0);
    transition: transform 0.6s var(--ease-soft);
    will-change: transform;
}

/* Light mode cards: avec fond blanc légèrement teinté */
[data-theme="light"] .fcard {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(46, 125, 50, 0.15);
    box-shadow: 0 12px 40px -12px rgba(46, 125, 50, 0.15);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
}
.fcard-1 { top: 0;    left: 0;   transform: rotate(-4deg); }
.fcard-2 { top: 70px; right: 0;  transform: rotate(3deg); }
.fcard-3 { bottom: 0; left: 30%; transform: rotate(-2deg); }

.fcard-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.65rem;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--muted-strong);
}
.fcard-header .dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--accent);
}
.fcard-1 .fcard-header .dot { background: var(--accent); }
.fcard-2 .fcard-header .dot { background: var(--accent-2); }
.fcard-3 .fcard-header .dot { background: var(--accent-deep); }

.fcard-title {
    font-family: 'Exo', system-ui, sans-serif;
    font-weight: 500;
    font-size: 1.1rem;
    color: var(--text);
    line-height: 1.25;
    margin: 0 0 0.6rem;
    letter-spacing: -0.02em;
}
.fcard-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--muted);
}
.fcard-meta .stack {
    display: flex;
    align-items: center;
}
.fcard-meta .stack span {
    width: 22px; height: 22px; border-radius: 50%;
    background: linear-gradient(135deg, #2E7D32, #4ade80);
    border: 2px solid var(--surface);
    margin-left: -6px;
    display: inline-block;
}
.fcard-meta .stack span:first-child { margin-left: 0; }
.fcard-meta .stack span:nth-child(2) { background: linear-gradient(135deg, #1A5276, #3B82F6); }
.fcard-meta .stack span:nth-child(3) { background: linear-gradient(135deg, #4ade80, #1A5276); }

/* ─── Avatars row ─── */
.avatars-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1.5rem;
}
.avatars-stack {
    display: flex;
    align-items: center;
}
.avatars-stack .av {
    width: 34px; height: 34px;
    border-radius: 50%;
    border: 2px solid var(--bg);
    margin-left: -10px;
    background-size: cover;
    background-position: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    position: relative;
}
.avatars-stack .av:first-child { margin-left: 0; }
.avatars-stack .av-1 { background: linear-gradient(135deg, #4ade80, #2E7D32); }
.avatars-stack .av-2 { background: linear-gradient(135deg, #3B82F6, #1A5276); }
.avatars-stack .av-3 { background: linear-gradient(135deg, #2E7D32, #1A5276); }
.avatars-stack .av-4 { background: linear-gradient(135deg, #4ade80, #3B82F6); }
.avatars-stack .av-5 {
    background: var(--surface-2);
    font-family: 'Space Grotesk', monospace;
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.avatars-row .caption {
    font-size: 0.75rem;
    color: var(--muted);
    line-height: 1.4;
}

/* ─── Marquee universités ─── */
.marquee {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
    overflow: hidden;
    mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent);
}
.marquee-track {
    display: inline-flex;
    gap: 2.5rem;
    white-space: nowrap;
    animation: marqueeSlide 32s linear infinite;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--muted);
    will-change: transform;
}
.marquee-track span::before {
    content: '◇';
    margin-right: 0.65em;
    color: var(--accent);
    opacity: 0.6;
}
@keyframes marqueeSlide {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

/* ═══════════════════════════════════════════════════════════════════════════
   RIGHT — Form column
   ═══════════════════════════════════════════════════════════════════════════ */

.auth-right {
    background: var(--bg);
    padding: 2.5rem 1.5rem 3rem;
    display: flex;
    flex-direction: column;
    min-height: 60vh;
    position: relative;
    z-index: 2;
}
@media (min-width: 768px) {
    .auth-right {
        padding: 3rem 2.5rem;
        min-height: 100vh;
    }
}
@media (min-width: 1280px) {
    .auth-right { padding: 3.5rem 4.5rem; }
}

.form-container {
    width: 100%;
    max-width: 440px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 1.5rem;
}

/* ─── Top row: brand mobile + theme toggle ─── */
.form-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.form-brand {
    font-family: 'Exo', system-ui, sans-serif;
    font-style: italic;
    font-weight: 600;
    font-size: 1.35rem;
    letter-spacing: -0.03em;
    color: var(--text);
    text-decoration: none;
}
.form-brand span { color: var(--accent); }

.theme-toggle {
    width: 40px; height: 40px;
    border-radius: 999px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--muted-strong);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.25s ease, color 0.25s ease, transform 0.25s var(--ease-soft);
}
.theme-toggle:hover { background: var(--surface-2); color: var(--text); transform: rotate(12deg); }

/* ─── Switch login/inscription ─── */
.auth-switch {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 4px;
    width: 100%;
}
.auth-switch-indicator {
    position: absolute;
    top: 4px; left: 4px;
    width: calc(50% - 4px);
    height: calc(100% - 8px);
    background: var(--text);
    border-radius: 999px;
    transition: transform 0.5s var(--ease-editorial);
    z-index: 0;
}
.auth-switch[data-mode="register"] .auth-switch-indicator {
    transform: translateX(100%);
}
.auth-switch-btn {
    position: relative;
    z-index: 1;
    padding: 0.625rem 1rem;
    background: transparent;
    border: 0;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--muted-strong);
    text-align: center;
    transition: color 0.3s ease;
    border-radius: 999px;
}
.auth-switch[data-mode="login"] .auth-switch-btn[data-target="login"],
.auth-switch[data-mode="register"] .auth-switch-btn[data-target="register"] {
    color: var(--bg);
}

/* Light mode switch: couleur d'accent au lieu de noir */
[data-theme="light"] .auth-switch-indicator {
    background: var(--accent);
}
[data-theme="light"] .auth-switch[data-mode="login"] .auth-switch-btn[data-target="login"],
[data-theme="light"] .auth-switch[data-mode="register"] .auth-switch-btn[data-target="register"] {
    color: white;
    font-weight: 700;
}

/* ─── Headings ─── */
.form-heading {
    font-family: 'Exo', system-ui, sans-serif;
    font-weight: 500;
    font-size: clamp(1.875rem, 3.5vw, 2.5rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--text);
    margin: 0.5rem 0 0.25rem;
}
.form-heading em { font-style: italic; color: var(--accent); font-weight: 600; }
.form-sub {
    font-size: 0.9375rem;
    color: var(--muted);
    line-height: 1.5;
    margin: 0;
}

/* ─── Floating label inputs ─── */
.field {
    position: relative;
    padding-top: 1rem;
}
.field-input {
    width: 100%;
    height: 56px;
    padding: 1.25rem 0 0.35rem;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--border-strong);
    color: var(--text);
    font-family: inherit;
    font-size: 1rem;
    letter-spacing: -0.005em;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    border-radius: 0;
}
.field-input::placeholder { color: transparent; }
.field-input:focus {
    border-bottom-color: var(--accent);
    box-shadow: 0 8px 20px -12px var(--glow);
}
.field-label {
    position: absolute;
    left: 0; top: 1.6rem;
    font-size: 1rem;
    color: var(--muted);
    pointer-events: none;
    transform-origin: left top;
    transition: transform 0.3s var(--ease-soft), color 0.3s ease;
}
.field-input:focus + .field-label,
.field-input:not(:placeholder-shown) + .field-label {
    transform: translateY(-1.1rem) scale(0.75);
    color: var(--muted-strong);
}
.field-input:focus + .field-label { color: var(--accent); }

/* Password toggle */
.field-toggle {
    position: absolute;
    right: 0; top: 1.6rem;
    background: transparent;
    border: 0;
    color: var(--muted);
    padding: 0.35rem;
    border-radius: 8px;
    transition: color 0.2s ease;
    display: inline-flex;
}
.field-toggle:hover { color: var(--text); }

/* Error state */
.field-input.has-error { border-bottom-color: var(--accent-2); }
.field-input.has-error:focus { box-shadow: 0 8px 20px -12px rgba(255, 94, 58, 0.4); }
.field-error {
    display: block;
    font-size: 0.75rem;
    color: var(--accent-2);
    margin-top: 0.4rem;
    font-weight: 500;
    animation: errSlide 0.4s var(--ease-soft) both;
}
@keyframes errSlide {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes shakeX {
    0%, 100% { transform: translateX(0); }
    20%      { transform: translateX(-6px); }
    40%      { transform: translateX(5px); }
    60%      { transform: translateX(-4px); }
    80%      { transform: translateX(3px); }
}
.field.shake { animation: shakeX 0.45s cubic-bezier(0.36, 0.07, 0.19, 0.97); }

/* ─── Strength meter ─── */
.strength {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    margin-top: 0.65rem;
}
.strength-bar {
    height: 3px;
    border-radius: 999px;
    background: var(--surface-2);
    overflow: hidden;
    position: relative;
}
.strength-bar::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent);
    transform: translateX(-100%);
    transition: transform 0.5s var(--ease-soft), background 0.3s ease;
}
.strength[data-level="1"] .strength-bar:nth-child(-n+1)::after,
.strength[data-level="2"] .strength-bar:nth-child(-n+2)::after,
.strength[data-level="3"] .strength-bar:nth-child(-n+3)::after,
.strength[data-level="4"] .strength-bar:nth-child(-n+4)::after {
    transform: translateX(0);
}
.strength[data-level="1"] .strength-bar::after { background: #1A5276; }
.strength[data-level="2"] .strength-bar::after { background: #3B82F6; }
.strength[data-level="3"] .strength-bar::after { background: #2E7D32; }
.strength[data-level="4"] .strength-bar::after { background: #4ade80; }
.strength-label {
    display: block;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--muted);
    margin-top: 0.4rem;
}

/* ─── Checkbox custom ─── */
.check {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    cursor: pointer;
    font-size: 0.8125rem;
    color: var(--muted-strong);
    user-select: none;
}
.check input { position: absolute; opacity: 0; pointer-events: none; }
.check-box {
    width: 18px; height: 18px;
    border: 1.5px solid var(--border-strong);
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.25s ease, border-color 0.25s ease;
    flex-shrink: 0;
}
.check-box svg {
    width: 12px; height: 12px;
    stroke: var(--bg);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    stroke-dasharray: 20;
    stroke-dashoffset: 20;
    transition: stroke-dashoffset 0.4s var(--ease-soft);
}
.check input:checked + .check-box {
    background: var(--accent);
    border-color: var(--accent);
}
.check input:checked + .check-box svg { stroke-dashoffset: 0; }
.check:hover .check-box { border-color: var(--accent); }

/* ─── Primary button ─── */
.btn-primary {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 56px;
    padding: 0 1.75rem;
    background: var(--accent);
    color: var(--bg);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.35s var(--ease-soft), box-shadow 0.35s ease;
    box-shadow: 0 0 0 0 var(--glow);
    width: 100%;
}
.btn-primary:hover {
    transform: scale(1.02) rotate(0.5deg);
    box-shadow: 0 0 40px 0 var(--glow);
}
.btn-primary:active { transform: scale(0.99); }

/* Light mode button: blanc sur vert */
[data-theme="light"] .btn-primary {
    background: var(--accent);
    color: white;
    font-weight: 700;
}
[data-theme="light"] .btn-primary:hover {
    background: var(--accent-deep);
    box-shadow: 0 8px 28px -8px rgba(46, 125, 50, 0.3);
}
.btn-primary .arrow {
    display: inline-block;
    transition: transform 0.35s var(--ease-soft);
}
.btn-primary:hover .arrow { transform: translateX(5px); }

/* Loader state (morph) */
.btn-primary.is-loading {
    pointer-events: none;
    width: 56px;
    padding: 0;
    color: transparent;
}
.btn-primary.is-loading .arrow,
.btn-primary.is-loading .txt { opacity: 0; }
.btn-primary.is-loading::before {
    content: '';
    position: absolute;
    inset: 50% auto auto 50%;
    transform: translate(-50%, -50%);
    width: 22px; height: 22px;
    border: 2.5px solid rgba(10, 10, 11, 0.2);
    border-top-color: var(--bg);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

/* Light mode loading: bordure light sur vert */
[data-theme="light"] .btn-primary.is-loading::before {
    border-color: rgba(255, 255, 255, 0.3);
    border-top-color: white;
}
.btn-primary.is-success::before {
    content: '✓';
    position: absolute;
    inset: 0;
    display: flex; align-items: center; justify-content: center;
    border: 0;
    animation: none;
    font-size: 1.5rem;
    color: var(--bg);
    font-weight: 700;
}
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

/* ─── Social auth ─── */
.divider {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    color: var(--muted);
    font-family: 'Space Grotesk', monospace;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.25em;
}
.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}
.social-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.65rem;
}
.btn-social {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 48px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    color: var(--text);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.25s ease, border-color 0.25s ease, transform 0.2s var(--ease-soft);
    text-decoration: none;
}
.btn-social:hover { background: var(--surface-2); border-color: var(--border-strong); transform: translateY(-1px); }
.btn-social svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-social .lbl { display: none; }
@media (min-width: 1024px) {
    .btn-social .lbl { display: inline; }
}

/* ─── Secondary link animé ─── */
.link-animated {
    position: relative;
    color: var(--muted-strong);
    font-size: 0.8125rem;
    font-weight: 500;
    text-decoration: none;
    padding-bottom: 2px;
}
.link-animated::after {
    content: '';
    position: absolute;
    left: 0; bottom: 0;
    height: 1px;
    width: 0;
    background: var(--accent);
    transition: width 0.35s var(--ease-soft);
}
.link-animated:hover { color: var(--text); }
.link-animated:hover::after { width: 100%; }

/* ─── Form row layouts ─── */
.form-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}
.form-footer-note {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--muted);
    margin-top: 0.5rem;
}
.form-footer-note a { color: var(--accent); text-decoration: none; font-weight: 500; }
.form-footer-note a:hover { text-decoration: underline; }

/* ═══════════════════════════════════════════════════════════════════════════
   STAGGER ENTRY ANIMATION
   ═══════════════════════════════════════════════════════════════════════════ */
.stagger {
    opacity: 0;
    transform: translateY(20px);
}
.stagger.is-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s var(--ease-soft), transform 0.7s var(--ease-soft);
}

/* ═══════════════════════════════════════════════════════════════════════════
   ACCESSIBILITY
   ═══════════════════════════════════════════════════════════════════════════ */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}
.field-input:focus-visible { outline: 0; }

/* ═══════════════════════════════════════════════════════════════════════════
   REDUCED MOTION
   ═══════════════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .mesh-bg, .marquee-track, .pulse-dot { animation: none !important; }
    .fcard { transform: none !important; }
    .cursor-dot, .cursor-ring { display: none !important; }
    body.auth-body { cursor: auto !important; }
    .stagger { opacity: 1; transform: none; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   SCROLL BAR (minimal, cohérent)
   ═══════════════════════════════════════════════════════════════════════════ */
.auth-body::-webkit-scrollbar { width: 10px; }
.auth-body::-webkit-scrollbar-track { background: var(--bg); }
.auth-body::-webkit-scrollbar-thumb { background: var(--surface-2); border-radius: 5px; }
.auth-body::-webkit-scrollbar-thumb:hover { background: var(--surface-3); }