/* =============================================================================
   Design tokens — palette & effets (clair / sombre)
   ============================================================================= */
:root {
    color-scheme: light;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

    --color-surface-base: #eceef2;
    --color-surface-soft: #f4f5f7;
    --color-surface-card: #f8f9fb;
    --color-surface-muted: #e4e7ec;
    --color-ink: #162033;
    --color-ink-soft: #334155;
    --color-ink-muted: #5c6678;
    --color-ink-faint: #8a94a6;
    --color-accent-cyan: #0f9e9e;
    --color-accent-violet: #7c6df0;
    --color-accent-blue: #3b82f6;
    --color-grid-line: rgba(15, 23, 42, 0.06);
    --bg-hero-radial: radial-gradient(circle at 50% 0%, rgba(15, 158, 158, 0.12), transparent 42%),
        radial-gradient(circle at 80% 20%, rgba(124, 109, 240, 0.1), transparent 35%);
    --shadow-glow: 0 0 80px rgba(15, 158, 158, 0.12);
    --shadow-card: 0 24px 60px rgba(15, 23, 42, 0.08);

    --surface-base: var(--color-surface-base);
    --surface-soft: var(--color-surface-soft);
    --surface-card: var(--color-surface-card);
    --surface-muted: var(--color-surface-muted);
    --text-primary: var(--color-ink);
    --text-muted: var(--color-ink-muted);
    --glass-bg: rgba(255, 255, 255, 0.78);
    --glass-border: rgba(148, 163, 184, 0.28);
    --gradient-primary: linear-gradient(135deg, #0f9e9e 0%, #3b82f6 48%, #7c6df0 100%);
}

[data-theme='dark'] {
    color-scheme: dark;
    --color-surface-base: #0a0c10;
    --color-surface-soft: #10141c;
    --color-surface-card: #151b26;
    --color-surface-muted: #1c2432;
    --color-ink: #eef1f7;
    --color-ink-soft: #c5cedd;
    --color-ink-muted: #b4bfd2;
    --color-ink-faint: #8e9aab;
    --color-accent-cyan: #2dd4bf;
    --color-accent-violet: #a78bfa;
    --color-accent-blue: #60a5fa;
    --color-grid-line: rgba(255, 255, 255, 0.06);
    --bg-hero-radial: radial-gradient(circle at 50% 0%, rgba(45, 212, 191, 0.14), transparent 45%),
        radial-gradient(circle at 82% 18%, rgba(167, 139, 250, 0.12), transparent 38%);
    --shadow-glow: 0 0 90px rgba(45, 212, 191, 0.14);
    --shadow-card: 0 28px 70px rgba(0, 0, 0, 0.45);

    --surface-base: var(--color-surface-base);
    --surface-soft: var(--color-surface-soft);
    --surface-card: var(--color-surface-card);
    --surface-muted: var(--color-surface-muted);
    --text-primary: var(--color-ink);
    --text-muted: var(--color-ink-muted);
    --glass-bg: rgba(21, 27, 38, 0.82);
    --glass-border: rgba(148, 163, 184, 0.14);
    --gradient-primary: linear-gradient(135deg, #2dd4bf 0%, #60a5fa 48%, #a78bfa 100%);
}

html {
    scroll-behavior: smooth;
    overflow-x: clip;
    transition:
        background-color 0.35s var(--ease-out-expo),
        color 0.3s ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    overflow-x: clip;
    background-color: var(--surface-base);
    color: var(--text-primary);
}

body.is-loading {
    cursor: wait;
}

img,
video {
    max-width: 100%;
    height: auto;
}

#project-pdf-host canvas {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
}

body.font-arabic {
    font-family: 'Noto Sans Arabic', 'Inter', system-ui, sans-serif;
}

.font-display {
    font-family: 'Space Grotesk', 'Inter', system-ui, sans-serif;
}

.noise-overlay {
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 40;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.cursor-glow {
    pointer-events: none;
    position: fixed;
    z-index: 30;
    width: 28rem;
    height: 28rem;
    border-radius: 9999px;
    background: radial-gradient(circle, rgba(15, 158, 158, 0.12), transparent 68%);
    transform: translate(-50%, -50%);
    transition: opacity 0.35s ease;
    opacity: 0;
}

.cursor-glow.is-on {
    opacity: 1;
}

@media (pointer: coarse), (prefers-reduced-motion: reduce) {
    .cursor-glow {
        display: none;
    }
}

.grid-overlay,
.hero-grid {
    background-image: linear-gradient(var(--color-grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-grid-line) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(circle at center, black 20%, transparent 78%);
}

.glass-panel,
.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.06);
}

[data-theme='dark'] .glass-panel,
[data-theme='dark'] .glass {
    box-shadow: 0 22px 55px rgba(0, 0, 0, 0.4);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.section-label {
    letter-spacing: 0.28em;
}

.section-accent {
    height: 1px;
    width: min(18rem, 42vw);
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, rgba(15, 158, 158, 0.75), rgba(59, 130, 246, 0.35), transparent);
    transform-origin: left center;
}

[data-theme='dark'] .section-accent {
    background: linear-gradient(90deg, rgba(45, 212, 191, 0.85), rgba(96, 165, 250, 0.45), transparent);
}

.reveal {
    opacity: 1;
    transform: none;
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

.profile-photo {
    object-fit: cover;
}

.profile-photo-placeholder {
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--color-surface-card) 96%, white),
        color-mix(in srgb, var(--color-surface-soft) 92%, transparent)
    );
}

[data-theme='dark'] .profile-photo-placeholder {
    background: linear-gradient(180deg, rgba(30, 38, 52, 0.95), rgba(16, 20, 28, 0.92));
}

.hero-line {
    overflow: hidden;
}

.hero-line > span {
    display: inline-block;
    transform: translateY(0);
}

.btn-primary {
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.28), transparent);
    transform: translateX(-120%);
    transition: transform 0.8s var(--ease-out-expo);
}

.btn-primary:hover::before {
    transform: translateX(120%);
}

.nav-pill {
    border-radius: 999px;
    transition: background 0.2s ease, color 0.2s ease;
}

.nav-pill:hover {
    background: rgba(15, 158, 158, 0.1);
}

[data-theme='dark'] .nav-pill:hover {
    background: rgba(45, 212, 191, 0.1);
}

[data-site-nav].nav-scrolled {
    background: color-mix(in srgb, var(--color-surface-card) 92%, transparent);
    border-color: rgba(148, 163, 184, 0.35);
    box-shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
}

[data-theme='dark'] [data-site-nav].nav-scrolled {
    background: color-mix(in srgb, var(--color-surface-card) 88%, transparent);
    border-color: rgba(148, 163, 184, 0.12);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}

.nav-surface-chip {
    border-color: rgba(148, 163, 184, 0.35);
    background-color: color-mix(in srgb, #fff 80%, transparent);
}

[data-theme='dark'] .nav-surface-chip {
    border-color: rgba(148, 163, 184, 0.16);
    background-color: color-mix(in srgb, var(--color-surface-card) 88%, transparent);
}

[data-theme='dark'] [data-site-nav] {
    border-color: rgba(148, 163, 184, 0.12);
}

.site-nav.nav-scrolled .nav-shell {
    background: color-mix(in srgb, var(--color-surface-card) 92%, transparent);
    border-color: rgba(148, 163, 184, 0.35);
    box-shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
}

[data-theme='dark'] .site-nav.nav-scrolled .nav-shell {
    background: color-mix(in srgb, var(--color-surface-card) 88%, transparent);
    border-color: rgba(148, 163, 184, 0.12);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}

.theme-seg-btn.is-active {
    background-color: var(--color-ink);
    color: #fff;
}

[data-theme='dark'] .theme-seg-btn.is-active {
    background-color: #1e293b;
    color: #f8fafc;
}

.hamburger {
    width: 20px;
    height: 2px;
    background: var(--color-ink);
    position: relative;
    display: block;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 20px;
    height: 2px;
    background: var(--color-ink);
    transition: transform 0.2s ease;
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

.mobile-drawer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s var(--ease-out-expo);
}

.mobile-drawer.is-open {
    max-height: min(85vh, 720px);
}

.hero-blob {
    position: absolute;
    border-radius: 999px;
    filter: blur(60px);
    opacity: 0.45;
    pointer-events: none;
}

.hero-blob--a {
    width: min(420px, 90vw);
    height: min(420px, 90vw);
    left: max(-35vw, -120px);
    top: 8%;
    background: rgba(15, 158, 158, 0.35);
}

.hero-blob--b {
    width: min(380px, 85vw);
    height: min(380px, 85vw);
    right: max(-30vw, -100px);
    bottom: 2%;
    background: rgba(124, 109, 240, 0.3);
}

@media (max-width: 639px) {
    .hero-blob--a,
    .hero-blob--b {
        opacity: 0.28;
        filter: blur(44px);
    }
}

.section-y {
    padding: 3.25rem 0;
}

@media (min-width: 640px) {
    .section-y {
        padding: 4.25rem 0;
    }
}

@media (min-width: 1024px) {
    .section-y {
        padding: 5.5rem 0;
    }
}

.section-kicker {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent-cyan);
}

.section-title {
    letter-spacing: -0.02em;
}

.pill {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid var(--glass-border);
    background: var(--color-surface-soft);
}

.skill-pill {
    transition:
        transform 0.35s var(--ease-out-expo),
        border-color 0.35s ease,
        background-color 0.35s ease;
}

.skill-pill:hover {
    transform: translateY(-2px);
    border-color: rgba(15, 158, 158, 0.35);
    background: color-mix(in srgb, var(--color-accent-cyan) 10%, var(--color-surface-card));
}

[data-theme='dark'] .skill-pill:hover {
    border-color: rgba(45, 212, 191, 0.35);
    background: rgba(45, 212, 191, 0.1);
}

.marquee-wrap {
    margin-top: 1.5rem;
}

.marquee {
    overflow: hidden;
}

.marquee__track {
    display: flex;
    gap: 2.5rem;
    width: max-content;
    animation: marquee var(--marquee-duration, 28s) linear infinite;
}

.marquee__item {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-ink-muted);
    white-space: nowrap;
}

@keyframes marquee {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(-50%);
    }
}

.timeline-card {
    transition:
        transform 0.25s var(--ease-out-expo),
        box-shadow 0.25s ease;
}

.timeline-card:hover {
    transform: translateY(-2px);
}

.badge {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(15, 158, 158, 0.12);
    color: var(--color-accent-cyan);
    border: 1px solid rgba(15, 158, 158, 0.25);
}

[data-theme='dark'] .badge {
    background: rgba(45, 212, 191, 0.12);
    border-color: rgba(45, 212, 191, 0.28);
}

/* Portfolio — cartes projets (lisibles, type agence) */
.pro-projects {
    list-style: none;
}

.pro-card {
    position: relative;
}

.pro-card:focus-within {
    outline: 2px solid color-mix(in srgb, var(--color-accent-cyan) 55%, transparent);
    outline-offset: 2px;
}

.pro-card__figure {
    position: relative;
    isolation: isolate;
}

.pro-card__figure::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: linear-gradient(180deg, transparent 38%, rgba(15, 23, 42, 0.42) 100%);
    transition: opacity 0.45s var(--ease-out-expo);
}

[data-theme='dark'] .pro-card__figure::after {
    background: linear-gradient(180deg, transparent 45%, rgba(0, 0, 0, 0.58) 100%);
}

.pro-card:hover .pro-card__figure::after {
    opacity: 0.92;
}

.pro-card__index {
    position: absolute;
    left: 1rem;
    bottom: 0.65rem;
    z-index: 2;
    line-height: 0.85;
    letter-spacing: -0.04em;
}

html[dir='rtl'] .pro-card__index {
    left: auto;
    right: 1rem;
}

.pro-card__tags {
    list-style: none;
    margin: 0;
    padding: 0;
}

.pro-card__tag {
    display: inline-flex;
    align-items: center;
    padding: 0.28rem 0.6rem;
    border-radius: 0.375rem;
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
    background: var(--color-surface-soft);
    border: 1px solid var(--color-surface-muted);
}

[data-theme='dark'] .pro-card__tag {
    background: var(--color-surface-muted);
    border-color: rgba(148, 163, 184, 0.14);
    color: var(--color-ink-soft);
}

.pro-card__excerpt {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

[data-theme='dark'] .pro-card:hover {
    border-color: rgba(148, 163, 184, 0.16);
    box-shadow: 0 28px 64px rgba(0, 0, 0, 0.42);
}

.service-card,
.testimonial-card,
.stat-card {
    transition:
        transform 0.55s var(--ease-out-expo),
        border-color 0.55s ease,
        box-shadow 0.55s ease;
}

.service-card:hover,
.testimonial-card:hover,
.stat-card:hover {
    transform: translateY(-6px);
    border-color: rgba(148, 163, 184, 0.45);
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.1);
}

[data-theme='dark'] .service-card:hover,
[data-theme='dark'] .testimonial-card:hover,
[data-theme='dark'] .stat-card:hover {
    border-color: rgba(148, 163, 184, 0.22);
    box-shadow: 0 26px 64px rgba(0, 0, 0, 0.45);
}

.page-loader {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: grid;
    place-items: center;
    background: var(--surface-base);
    transition:
        opacity 0.7s ease,
        visibility 0.7s ease;
}

.page-loader.is-done {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.page-loader__inner {
    padding: 2rem 2.5rem;
    border-radius: 1.25rem;
    text-align: center;
}

.page-loader__dot {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 9999px;
    border: 1px solid rgba(148, 163, 184, 0.35);
    border-top-color: #0f9e9e;
    margin: 0 auto;
    animation: spin 1s linear infinite;
}

[data-theme='dark'] .page-loader__dot {
    border-color: rgba(148, 163, 184, 0.22);
    border-top-color: var(--color-accent-cyan);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.back-to-top {
    position: fixed;
    right: max(0.75rem, env(safe-area-inset-right));
    bottom: calc(5.5rem + env(safe-area-inset-bottom));
    z-index: 90;
    width: 46px;
    height: 46px;
    border-radius: 999px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--color-ink);
    display: grid;
    place-items: center;
    box-shadow: var(--shadow-card);
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    transition:
        opacity 0.25s var(--ease-out-expo),
        transform 0.25s var(--ease-out-expo);
}

.back-to-top.is-visible {
    opacity: 1;
    transform: none;
    pointer-events: auto;
}

.fab {
    position: fixed;
    right: max(0.75rem, env(safe-area-inset-right));
    bottom: max(0.75rem, env(safe-area-inset-bottom));
    z-index: 95;
    width: 56px;
    height: 56px;
    border-radius: 999px;
    border: 1px solid var(--glass-border);
    background: var(--gradient-primary);
    color: #fff;
    display: grid;
    place-items: center;
    box-shadow: var(--shadow-glow);
}

.fab__glow {
    position: absolute;
    inset: -6px;
    border-radius: inherit;
    background: inherit;
    filter: blur(14px);
    opacity: 0.45;
    z-index: -1;
}

.assistant-panel {
    position: fixed;
    right: max(0.75rem, env(safe-area-inset-right));
    bottom: calc(5rem + env(safe-area-inset-bottom));
    z-index: 96;
    width: min(420px, calc(100vw - 2rem));
}

.assistant-panel__shell {
    border-radius: 1.25rem;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.assistant-panel__thread {
    max-height: 320px;
    overflow-y: auto;
    background: var(--color-surface-soft);
}

.assistant-bubble {
    border-radius: 1rem;
    padding: 0.65rem 0.85rem;
    font-size: 0.875rem;
    line-height: 1.5;
}

.assistant-bubble--user {
    background: rgba(15, 158, 158, 0.12);
    border: 1px solid rgba(15, 158, 158, 0.25);
}

[data-theme='dark'] .assistant-bubble--user {
    background: rgba(45, 212, 191, 0.12);
    border-color: rgba(45, 212, 191, 0.28);
}

.assistant-bubble--bot {
    background: var(--color-surface-card);
    border: 1px solid var(--glass-border);
}

.project-modal {
    position: fixed;
    inset: 0;
    z-index: 150;
    display: none;
}

.project-modal.is-open {
    display: block;
}

.project-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(2, 6, 23, 0.55);
    backdrop-filter: blur(4px);
}

.project-modal__panel {
    position: absolute;
    inset: 0;
    margin: 0;
    border-radius: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-card);
    min-height: 100dvh;
    max-height: 100dvh;
}

@media (min-width: 640px) {
    .project-modal__panel {
        margin: 0.5rem;
        border-radius: 1.25rem;
        min-height: 0;
        max-height: none;
        inset: 0.5rem;
    }
}

@media (min-width: 1024px) {
    .project-modal__panel {
        margin: 1.5rem;
        border-radius: 1.5rem;
        inset: 1.5rem;
    }
}

.project-modal__body {
    flex: 1;
    min-height: 0;
}

#project-modal-detail.prose a {
    color: var(--color-accent-cyan);
}

#project-pdf-host {
    -webkit-overflow-scrolling: touch;
}

.form-field {
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.form-field::placeholder {
    color: var(--color-ink-faint);
    opacity: 1;
}

.form-field:focus {
    outline: none;
    border-color: rgba(15, 158, 158, 0.45);
    box-shadow: 0 0 0 4px rgba(15, 158, 158, 0.1);
    background: var(--color-surface-card);
}

[data-theme='dark'] .form-field:focus {
    border-color: rgba(45, 212, 191, 0.45);
    box-shadow: 0 0 0 4px rgba(45, 212, 191, 0.12);
    background: var(--color-surface-muted);
}

.footer-link {
    position: relative;
}

.footer-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 1px;
    transform: scaleX(0);
    transform-origin: left;
    background: currentColor;
    transition: transform 0.35s var(--ease-out-expo);
}

.footer-link:hover::after {
    transform: scaleX(1);
}

/* bg-ink is body text token in dark mode — keep CTA slabs readable */
[data-theme='dark'] .bg-ink {
    background-color: #1e293b !important;
}

[data-theme='dark'] .hover\:bg-ink-soft:hover {
    background-color: #334155 !important;
}

[data-theme='dark'] .hover\:bg-white:hover {
    background-color: var(--color-surface-muted) !important;
}

html[lang='ar'] body.font-arabic {
    font-family: 'Noto Sans Arabic', 'Inter', system-ui, sans-serif;
}

html[lang='ar'] .font-display {
    font-family: 'Noto Sans Arabic', 'Space Grotesk', 'Inter', system-ui, sans-serif;
}

html[lang='ar'] .section-label {
    letter-spacing: 0.14em;
}

html[lang='ar'] .section-head .section-title {
    letter-spacing: 0;
}

html[dir='rtl'] .fab,
html[dir='rtl'] .assistant-panel,
html[dir='rtl'] .back-to-top {
    right: auto;
    left: max(0.75rem, env(safe-area-inset-left));
}

html[dir='rtl'] .assistant-panel {
    left: max(0.75rem, env(safe-area-inset-left));
    right: auto;
}

.assistant-bubble--user {
    margin-left: 0.5rem;
    margin-right: 0;
}

.assistant-bubble--bot {
    margin-right: 0.5rem;
    margin-left: 0;
}

@media (min-width: 640px) {
    .assistant-bubble--user {
        margin-left: 2rem;
    }

    .assistant-bubble--bot {
        margin-right: 2rem;
    }
}

html[dir='rtl'] .assistant-bubble--user {
    margin-left: 0;
    margin-right: 0.5rem;
}

html[dir='rtl'] .assistant-bubble--bot {
    margin-right: 0;
    margin-left: 0.5rem;
}

@media (min-width: 640px) {
    html[dir='rtl'] .assistant-bubble--user {
        margin-right: 2rem;
        margin-left: 0;
    }

    html[dir='rtl'] .assistant-bubble--bot {
        margin-left: 2rem;
        margin-right: 0;
    }
}

@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;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }

    .marquee__track {
        animation: none;
    }

    .cursor-glow {
        display: none;
    }

    .loader {
        display: none;
    }

    .pro-card,
    .pro-card:hover {
        transform: none !important;
    }

    .pro-card__img {
        transition: none !important;
    }
}