/* ============================================================
   ARTIN DAVARANI — PORTFOLIO 2026
   Palette:
     • Bone / Ivory base
     • Petrol Blue (آبی نفتی تیره)
     • Accents: Terracotta · Sage Teal · Antique Gold
   ============================================================ */

/* ============================================================
   Fonts — 100% LOCAL (in ./fonts/). No external CDN, no VPN needed.
   ============================================================ */
@font-face { font-family: 'Vazirmatn'; font-style: normal; font-weight: 300; font-display: swap;
    src: url('./fonts/Vazirmatn-Light.woff2') format('woff2'); }
@font-face { font-family: 'Vazirmatn'; font-style: normal; font-weight: 400; font-display: swap;
    src: url('./fonts/Vazirmatn-Regular.woff2') format('woff2'); }
@font-face { font-family: 'Vazirmatn'; font-style: normal; font-weight: 500; font-display: swap;
    src: url('./fonts/Vazirmatn-Medium.woff2') format('woff2'); }
@font-face { font-family: 'Vazirmatn'; font-style: normal; font-weight: 600; font-display: swap;
    src: url('./fonts/Vazirmatn-SemiBold.woff2') format('woff2'); }
@font-face { font-family: 'Vazirmatn'; font-style: normal; font-weight: 700; font-display: swap;
    src: url('./fonts/Vazirmatn-Bold.woff2') format('woff2'); }
@font-face { font-family: 'Vazirmatn'; font-style: normal; font-weight: 800; font-display: swap;
    src: url('./fonts/Vazirmatn-ExtraBold.woff2') format('woff2'); }

@font-face { font-family: 'Sora'; font-style: normal; font-weight: 400; font-display: swap;
    src: url('./fonts/Sora-Regular.woff2') format('woff2'); }
@font-face { font-family: 'Sora'; font-style: normal; font-weight: 600; font-display: swap;
    src: url('./fonts/Sora-SemiBold.woff2') format('woff2'); }
@font-face { font-family: 'Sora'; font-style: normal; font-weight: 700; font-display: swap;
    src: url('./fonts/Sora-Bold.woff2') format('woff2'); }

:root {
    /* ---- Brand palette ---- */
    --bone-100: #FBF6EC;
    --bone-200: #F4ECDA;
    --bone-300: #E8DCC1;
    --bone-400: #D8C8A6;

    --petrol-900: #061826;
    --petrol-800: #0A2540;
    --petrol-700: #143352;
    --petrol-600: #234866;
    --petrol-500: #3D6786;

    --accent-terracotta: #D87B5C;   /* warm */
    --accent-teal: #5B8A8B;         /* cool */
    --accent-gold: #C8A45C;         /* highlight */

    --soft-coral: #FF9776;
    --soft-mint: #76C8C0;
    --soft-saffron: #E5B962;

    /* ---- Semantic tokens (LIGHT — default) ---- */
    --bg: var(--bone-100);
    --bg-elevated: var(--bone-200);
    --surface: #FFFDF7;
    --surface-strong: #FFFFFFCC;

    --text: var(--petrol-800);
    --text-soft: var(--petrol-600);
    --text-faint: var(--petrol-500);

    --border: rgba(10, 37, 64, 0.10);
    --border-strong: rgba(10, 37, 64, 0.18);

    --accent-1: var(--accent-terracotta);
    --accent-2: var(--accent-teal);
    --accent-3: var(--accent-gold);

    --shadow-sm: 0 2px 8px rgba(10, 37, 64, 0.06);
    --shadow-md: 0 10px 30px rgba(10, 37, 64, 0.10);
    --shadow-lg: 0 24px 60px rgba(10, 37, 64, 0.15);
    --shadow-accent: 0 18px 50px -10px rgba(216, 123, 92, 0.45);

    --grad-brand: linear-gradient(135deg, var(--petrol-800) 0%, var(--accent-teal) 55%, var(--accent-gold) 100%);
    --grad-warm: linear-gradient(135deg, var(--accent-terracotta), var(--accent-gold));

    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --radius-pill: 999px;

    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --t-fast: 180ms var(--ease);
    --t-base: 320ms var(--ease);
    --t-slow: 600ms var(--ease);

    --content-max: 1200px;
    --header-height: 80px;
}

/* ---- Semantic tokens (DARK) ---- */
[data-theme="dark"] {
    --bg: var(--petrol-900);
    --bg-elevated: var(--petrol-800);
    --surface: var(--bone-200);
    --surface-strong: rgba(244, 236, 218, 0.95);

    --text: var(--petrol-800);            /* card text (dark on bone cards) */
    --text-soft: var(--petrol-700);
    --text-faint: var(--petrol-600);

    --border: rgba(244, 236, 218, 0.14);
    --border-strong: rgba(244, 236, 218, 0.25);

    --accent-1: var(--soft-coral);
    --accent-2: var(--soft-mint);
    --accent-3: var(--soft-saffron);

    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 12px 36px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 28px 70px rgba(0, 0, 0, 0.55);
    --shadow-accent: 0 18px 50px -10px rgba(255, 151, 118, 0.45);

    --grad-brand: linear-gradient(135deg, var(--soft-mint) 0%, var(--soft-saffron) 50%, var(--soft-coral) 100%);
    --grad-warm: linear-gradient(135deg, var(--soft-coral), var(--soft-saffron));
}

/* ============================================================
   2026 Visual Layer — aurora mesh, noise grain, scroll progress
   ============================================================ */

/* Scroll progress bar (top, gradient) */
.scroll-progress {
    position: fixed;
    top: 0; left: 0;
    height: 3px;
    width: var(--scroll, 0%);
    background: linear-gradient(90deg, var(--accent-1), var(--accent-2), var(--accent-3));
    z-index: 9998;
    box-shadow: 0 0 12px color-mix(in srgb, var(--accent-1) 50%, transparent);
    transition: width 0.08s linear;
}

/* Aurora gradient mesh (animated blobs behind everything) */
.aurora {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    filter: blur(80px) saturate(140%);
    opacity: 0.55;
}

[data-theme="dark"] .aurora { opacity: 0.5; }

.aurora-blob {
    position: absolute;
    border-radius: 50%;
    will-change: transform;
}

.aurora-blob-1 {
    width: 50vw; height: 50vw;
    background: radial-gradient(circle, var(--accent-1), transparent 65%);
    top: -10vw; right: -10vw;
    animation: blobDrift1 22s ease-in-out infinite alternate;
}
.aurora-blob-2 {
    width: 45vw; height: 45vw;
    background: radial-gradient(circle, var(--accent-2), transparent 65%);
    bottom: -10vw; left: -10vw;
    animation: blobDrift2 26s ease-in-out infinite alternate;
}
.aurora-blob-3 {
    width: 35vw; height: 35vw;
    background: radial-gradient(circle, var(--accent-3), transparent 65%);
    top: 30%; left: 35%;
    animation: blobDrift3 30s ease-in-out infinite alternate;
}

@keyframes blobDrift1 {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-10vw, 12vw) scale(1.15); }
}
@keyframes blobDrift2 {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(12vw, -10vw) scale(1.2); }
}
@keyframes blobDrift3 {
    0%   { transform: translate(0, 0) scale(0.9); }
    100% { transform: translate(8vw, -6vw) scale(1.1); }
}

/* Subtle noise grain on body */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9997;
    opacity: 0.045;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
    background-size: 200px 200px;
}

[data-theme="dark"] body::before { opacity: 0.07; mix-blend-mode: screen; }

/* 3D tilt utility — initialized by JS */
.tilt {
    transform-style: preserve-3d;
    will-change: transform;
    transition: transform 0.25s var(--ease);
}

/* Magnetic button — JS-driven offset */
.magnetic {
    will-change: transform;
    transition: transform 0.25s var(--ease), box-shadow var(--t-base);
}

/* ============================================================
   Reset & Base
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Vazirmatn', 'Sora', Tahoma, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    overflow-x: hidden;
    direction: rtl;
    min-height: 100vh;
    transition: background var(--t-base), color var(--t-base);
}

/* Body heading color stays bone-toned in dark mode */
[data-theme="dark"] body {
    color: var(--bone-200);
}

::selection { background: var(--accent-1); color: var(--bone-100); }

a { color: inherit; text-decoration: none; }

img, svg { display: block; max-width: 100%; }

.container {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================================
   Three.js global background canvas
   ============================================================ */
.bg-canvas {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    opacity: 0.55;
}

[data-theme="dark"] .bg-canvas {
    opacity: 0.65;
}

/* Cursor glow */
.cursor-glow {
    position: fixed;
    width: 380px;
    height: 380px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(216, 123, 92, 0.22), transparent 60%);
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 1;
    transition: opacity 0.4s;
    mix-blend-mode: multiply;
}

[data-theme="dark"] .cursor-glow {
    background: radial-gradient(circle, rgba(118, 200, 192, 0.18), transparent 60%);
    mix-blend-mode: screen;
}

@media (hover: none) { .cursor-glow { display: none; } }

/* ============================================================
   Loader
   ============================================================ */
.loader {
    position: fixed;
    inset: 0;
    background: var(--bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden { opacity: 0; visibility: hidden; }

.loader-content {
    position: relative;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid transparent;
    border-top-color: var(--accent-1);
    animation: spin 1.2s linear infinite;
}

.loader-ring-2 {
    inset: 12px;
    border-top-color: var(--accent-2);
    animation-duration: 1.8s;
    animation-direction: reverse;
}

.loader-ring-3 {
    inset: 24px;
    border-top-color: var(--accent-3);
    animation-duration: 2.4s;
}

.loader-text {
    font-family: 'Sora', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.08em;
    background: var(--grad-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

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

/* ============================================================
   Header / Nav
   ============================================================ */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-height);
    background: color-mix(in srgb, var(--bg) 75%, transparent);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    transition: background var(--t-base), border-color var(--t-base);
}

.navbar {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Sora', sans-serif;
    font-weight: 700;
}

.logo-mark {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: var(--grad-brand);
    color: var(--bone-100);
    font-size: 1rem;
    letter-spacing: 0.02em;
    box-shadow: var(--shadow-accent);
}

.logo-text {
    font-size: 1rem;
    letter-spacing: 0.15em;
    background: var(--grad-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    color: var(--text-soft);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 6px 0;
    transition: color var(--t-fast);
}

[data-theme="dark"] .nav-menu a { color: var(--bone-300); }

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 0;
    height: 2px;
    background: var(--accent-1);
    transition: width var(--t-base);
}

.nav-menu a:hover {
    color: var(--accent-1);
}

.nav-menu a:hover::after { width: 100%; }

.nav-buttons {
    display: flex;
    align-items: center;
    gap: 10px;
}

.icon-btn {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-size: 1rem;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: all var(--t-fast);
    font-family: inherit;
}

[data-theme="dark"] .icon-btn { color: var(--bone-200); background: rgba(244, 236, 218, 0.08); }

.icon-btn:hover {
    transform: translateY(-2px);
    border-color: var(--accent-1);
    color: var(--accent-1);
    box-shadow: var(--shadow-sm);
}

.lang-btn {
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
}

.moon-icon { display: none; }
[data-theme="dark"] .sun-icon { display: none; }
[data-theme="dark"] .moon-icon { display: block; }

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    padding: 10px;
}

.menu-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text);
    transition: var(--t-fast);
    border-radius: 2px;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-family: inherit;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: transform var(--t-fast), box-shadow var(--t-base), background var(--t-base);
    overflow: hidden;
    isolation: isolate;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--grad-warm);
    opacity: 0;
    transition: opacity var(--t-base);
    z-index: -1;
}

.primary-btn {
    background: var(--petrol-800);
    color: var(--bone-100);
    box-shadow: var(--shadow-accent);
}

[data-theme="dark"] .primary-btn {
    background: var(--bone-200);
    color: var(--petrol-800);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.primary-btn:hover::before { opacity: 1; }

.secondary-btn {
    background: transparent;
    color: var(--text);
    border: 1.5px solid var(--border-strong);
}

[data-theme="dark"] .secondary-btn {
    color: var(--bone-200);
    border-color: var(--border-strong);
}

.secondary-btn:hover {
    transform: translateY(-3px);
    border-color: var(--accent-1);
    color: var(--accent-1);
    box-shadow: var(--shadow-sm);
}

.btn-arrow {
    display: inline-block;
    transition: transform var(--t-fast);
}

.btn:hover .btn-arrow { transform: translateX(-4px); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-height) + 40px) 0 80px;
    overflow: hidden;
    z-index: 1;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, var(--border) 1px, transparent 1px),
        linear-gradient(to bottom, var(--border) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    z-index: -1;
    opacity: 0.5;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content { animation: fadeUp 1s var(--ease) backwards; }

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    color: var(--accent-1);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 28px;
    box-shadow: var(--shadow-sm);
}

.hero-eyebrow::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent-1);
    box-shadow: 0 0 12px var(--accent-1);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.7); }
}

.hero-title {
    font-family: 'Sora', 'Vazirmatn', sans-serif;
    font-size: clamp(2.6rem, 5.6vw, 4.8rem);
    font-weight: 700;
    line-height: 1.05;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

[data-theme="dark"] .hero-title { color: var(--bone-200); }

.hero-title-line {
    display: block;
}

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

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-soft);
    margin-bottom: 40px;
    max-width: 560px;
    line-height: 1.8;
}

[data-theme="dark"] .hero-subtitle { color: var(--bone-300); }

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    margin-bottom: 44px;
    padding: 24px 28px;
    border-radius: var(--radius-lg);
    background: var(--surface-strong);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    width: fit-content;
}

[data-theme="dark"] .hero-stats {
    background: rgba(244, 236, 218, 0.08);
    border-color: var(--border-strong);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-family: 'Sora', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    background: var(--grad-warm);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
}

.stat-label {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-faint);
    white-space: nowrap;
}

[data-theme="dark"] .stat-label { color: var(--bone-300); }

.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--border-strong);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

/* Hero image / profile */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1.2s var(--ease) 0.2s backwards;
}

.profile-stage {
    position: relative;
    width: min(420px, 100%);
    aspect-ratio: 1;
    display: grid;
    place-items: center;
}

.hero-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.profile-ring {
    position: absolute;
    inset: 10%;
    border-radius: 50%;
    border: 2px dashed var(--border-strong);
    animation: rotate 30s linear infinite;
}

.profile-ring::before {
    content: '';
    position: absolute;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--accent-1);
    top: -7px; left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 20px var(--accent-1);
}

.profile-orb {
    position: absolute;
    inset: 25%;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, var(--surface), var(--bg-elevated));
    box-shadow:
        inset 0 -30px 60px rgba(10, 37, 64, 0.15),
        0 30px 80px rgba(10, 37, 64, 0.15);
    z-index: 1;
}

[data-theme="dark"] .profile-orb {
    background: radial-gradient(circle at 30% 30%, var(--bone-200), var(--bone-300));
}

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

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    opacity: 0.7;
}

.scroll-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent-1);
    animation: scrollDot 2s ease-in-out infinite;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--accent-1), transparent);
}

@keyframes scrollDot {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(10px); opacity: 0.4; }
}

/* ============================================================
   Section titles
   ============================================================ */
.section-title {
    font-family: 'Sora', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
    position: relative;
    background: linear-gradient(110deg,
        var(--text) 0%,
        var(--text) 40%,
        var(--accent-1) 50%,
        var(--text) 60%,
        var(--text) 100%);
    background-size: 250% 100%;
    background-position: 100% 0;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: titleSweep 6s ease-in-out infinite;
}

[data-theme="dark"] .section-title {
    background: linear-gradient(110deg,
        var(--bone-200) 0%,
        var(--bone-200) 40%,
        var(--accent-1) 50%,
        var(--bone-200) 60%,
        var(--bone-200) 100%);
    background-size: 250% 100%;
    background-position: 100% 0;
    -webkit-background-clip: text;
    background-clip: text;
    animation: titleSweep 6s ease-in-out infinite;
}

@keyframes titleSweep {
    0%, 100% { background-position: 100% 0; }
    50%      { background-position: 0% 0; }
}

.section-title::after {
    content: '';
    display: block;
    width: 72px;
    height: 3px;
    background: var(--grad-warm);
    border-radius: 2px;
    margin: 18px auto 0;
    box-shadow: 0 0 18px color-mix(in srgb, var(--accent-1) 50%, transparent);
}

.section-subtitle {
    text-align: center;
    color: var(--text-soft);
    margin-bottom: 56px;
    font-size: 1.05rem;
    max-width: 600px;
    margin-inline: auto;
}

[data-theme="dark"] .section-subtitle { color: var(--bone-300); }

/* ============================================================
   About
   ============================================================ */
.about { padding: 120px 0; position: relative; z-index: 1; }

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-top: 56px;
}

.about-text p {
    font-size: 1.08rem;
    color: var(--text-soft);
    margin-bottom: 32px;
    line-height: 1.9;
}

[data-theme="dark"] .about-text p { color: var(--bone-300); }

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--t-base);
    color: var(--text);
}

.highlight-item:hover {
    transform: translateY(-4px);
    border-color: var(--accent-2);
    box-shadow: var(--shadow-md);
}

.highlight-icon {
    font-size: 1.5rem;
}

.tech-stack {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.tech-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
    transition: transform var(--t-fast), border-color var(--t-base), box-shadow var(--t-base);
    overflow: hidden;
    isolation: isolate;
}

/* Animated gradient border on hover (no overlay covering text) */
.tech-item::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-md);
    padding: 1.5px;
    background: var(--grad-warm);
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    opacity: 0;
    transition: opacity var(--t-base);
    pointer-events: none;
    z-index: 1;
}

/* Brand-colored dot indicator */
.tech-item::after {
    content: '';
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent-2);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-2) 18%, transparent);
    flex-shrink: 0;
    order: -1;
    transition: background var(--t-base), box-shadow var(--t-base), transform var(--t-base);
}

.tech-item:nth-child(3n+1)::after { background: var(--accent-1); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-1) 18%, transparent); }
.tech-item:nth-child(3n+2)::after { background: var(--accent-2); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-2) 18%, transparent); }
.tech-item:nth-child(3n+3)::after { background: var(--accent-3); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-3) 18%, transparent); }

.tech-item:hover {
    transform: translateY(-3px);
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.tech-item:hover::before { opacity: 1; }
.tech-item:hover::after {
    transform: scale(1.35);
    box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent-1) 22%, transparent);
}

/* ============================================================
   Skills
   ============================================================ */
.skills {
    padding: 120px 0;
    background: var(--bg-elevated);
    position: relative;
    z-index: 1;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 24px;
}

.skill-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: all var(--t-base);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 80px; height: 80px;
    background: radial-gradient(circle, var(--accent-2), transparent 70%);
    opacity: 0;
    transition: opacity var(--t-base);
    transform: translate(30%, -30%);
}

.skill-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent-2);
    box-shadow: var(--shadow-md);
}

.skill-card:hover::before { opacity: 0.25; }

.skill-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.skill-icon { font-size: 2rem; }

.skill-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text);
}

.skill-progress {
    height: 6px;
    background: var(--bg-elevated);
    border-radius: var(--radius-pill);
    overflow: hidden;
    margin-bottom: 10px;
}

[data-theme="dark"] .skill-progress {
    background: rgba(10, 37, 64, 0.15);
}

.skill-progress-bar {
    height: 100%;
    background: var(--grad-warm);
    border-radius: var(--radius-pill);
    transition: width 1.4s var(--ease);
    box-shadow: 0 0 10px rgba(216, 123, 92, 0.4);
}

.skill-percentage {
    font-size: 0.85rem;
    color: var(--accent-1);
    font-weight: 600;
    text-align: left;
}

/* ============================================================
   Experience / Timeline
   ============================================================ */
.experience { padding: 120px 0; position: relative; z-index: 1; }

.timeline {
    position: relative;
    max-width: 850px;
    margin: 60px auto 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--accent-2), var(--accent-3), transparent);
    left: 50%;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
}

.timeline-marker {
    position: absolute;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--accent-1);
    border: 4px solid var(--bg);
    box-shadow: 0 0 0 4px var(--accent-1), 0 0 30px var(--accent-1);
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.timeline-content {
    width: 45%;
    padding: 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--t-base);
    color: var(--text);
}

.timeline-content:hover {
    transform: translateY(-4px);
    border-color: var(--accent-1);
    box-shadow: var(--shadow-md);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 55%;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 55%;
}

.timeline-title {
    font-size: 1.25rem;
    margin-bottom: 8px;
    color: var(--accent-1);
    font-weight: 600;
}

.timeline-company {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--accent-2);
    font-size: 0.95rem;
}

.timeline-date {
    color: var(--text-faint);
    font-size: 0.85rem;
    margin-bottom: 14px;
    font-family: 'Sora', sans-serif;
    letter-spacing: 0.05em;
}

.timeline-description {
    color: var(--text-soft);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* ============================================================
   ACHIEVEMENTS
   ============================================================ */
.achievements {
    padding: 120px 0;
    background: var(--bg-elevated);
    position: relative;
    z-index: 1;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.achievement-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    color: var(--text);
    transition: transform var(--t-base), box-shadow var(--t-base), border-color var(--t-base);
    transform-style: preserve-3d;
    isolation: isolate;
}

.achievement-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    padding: 1.5px;
    background: var(--grad-warm);
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    opacity: 0;
    transition: opacity var(--t-base);
    pointer-events: none;
}

.achievement-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-lg);
}

.achievement-card:hover::after { opacity: 1; }

.achievement-glow {
    position: absolute;
    inset: -2px;
    border-radius: var(--radius-lg);
    background: var(--grad-warm);
    filter: blur(40px);
    opacity: 0;
    transition: opacity var(--t-base);
    z-index: -1;
}

.achievement-card:hover .achievement-glow { opacity: 0.35; }

.achievement-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.achievement-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.achievement-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.4), transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 0, 0, 0.15), transparent 50%);
}

.rank-gold {
    background: linear-gradient(135deg, #F2D480, #C8A45C 60%, #8B6E2F);
}

.rank-silver {
    background: linear-gradient(135deg, #E8E4DA, #B0AFA5 60%, #6E6D67);
}

.rank-bronze {
    background: linear-gradient(135deg, #E6A57F, #B57049 60%, #784A2C);
}

.medal-icon {
    font-size: 4rem;
    filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.3));
    animation: medalFloat 4s ease-in-out infinite;
    z-index: 1;
}

@keyframes medalFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(-4deg); }
}

.achievement-year {
    font-family: 'Sora', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.95);
    background: rgba(0, 0, 0, 0.25);
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    backdrop-filter: blur(6px);
    letter-spacing: 0.06em;
    z-index: 1;
}

.achievement-content { padding: 28px; }

.achievement-rank {
    display: inline-block;
    font-family: 'Sora', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-1);
    margin-bottom: 12px;
    padding: 4px 12px;
    border: 1px solid var(--accent-1);
    border-radius: var(--radius-pill);
}

.achievement-title {
    font-size: 1.4rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--text);
}

.achievement-description {
    color: var(--text-soft);
    line-height: 1.7;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.achievement-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    padding: 6px 14px;
    background: var(--bg-elevated);
    border-radius: var(--radius-pill);
    font-size: 0.78rem;
    color: var(--accent-2);
    font-weight: 600;
    letter-spacing: 0.03em;
}

[data-theme="dark"] .tag {
    background: rgba(10, 37, 64, 0.12);
    color: var(--petrol-700);
}

/* ============================================================
   Contact
   ============================================================ */
.contact { padding: 120px 0; position: relative; z-index: 1; }

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 56px;
    margin-top: 56px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.contact-item {
    display: flex;
    gap: 18px;
    align-items: center;
    padding: 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--t-base);
    color: var(--text);
}

.contact-item:hover {
    transform: translateX(-6px);
    border-color: var(--accent-1);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    font-size: 1.2rem;
    background: var(--grad-warm);
    color: var(--bone-100);
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 0.85rem;
    margin-bottom: 4px;
    color: var(--text-faint);
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.contact-details p {
    color: var(--text);
    font-weight: 500;
}

.contact-details a {
    color: var(--text);
    transition: color var(--t-fast);
}

.contact-details a:hover { color: var(--accent-1); }

/* Form */
.contact-form {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-sm);
}

.form-group {
    position: relative;
    margin-bottom: 22px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 18px;
    background: var(--bg);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--t-fast), box-shadow var(--t-fast);
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: transparent;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-1);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-1) 20%, transparent);
}

.form-group label {
    position: absolute;
    top: 16px;
    right: 18px;
    color: var(--text-faint);
    pointer-events: none;
    transition: var(--t-fast);
    background: transparent;
    padding: 0 4px;
}

.form-group input:focus + label,
.form-group textarea:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -10px;
    right: 14px;
    font-size: 0.78rem;
    background: var(--surface);
    color: var(--accent-1);
    font-weight: 600;
}

.form-group.has-error input,
.form-group.has-error textarea {
    border-color: #D54B3F;
    box-shadow: 0 0 0 4px rgba(213, 75, 63, 0.12);
}

.form-error {
    display: block;
    color: #D54B3F;
    font-size: 0.8rem;
    margin-top: 6px;
    margin-right: 4px;
    min-height: 1em;
    opacity: 0;
    transition: opacity var(--t-fast);
}

.form-group.has-error .form-error { opacity: 1; }

.form-counter {
    position: absolute;
    bottom: -22px;
    left: 4px;
    font-size: 0.75rem;
    color: var(--text-faint);
    font-family: 'Sora', sans-serif;
}

.contact-form .btn { width: 100%; margin-top: 14px; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
    background: var(--bg-elevated);
    padding: 56px 0 32px;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 1;
}

.footer-content { text-align: center; }

.footer-logo {
    font-family: 'Sora', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    margin-bottom: 28px;
    background: var(--grad-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-bottom: 24px;
}

.social-link {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: 'Sora', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    display: grid;
    place-items: center;
    transition: all var(--t-fast);
}

.social-link:hover {
    transform: translateY(-4px);
    border-color: var(--accent-1);
    color: var(--accent-1);
    box-shadow: var(--shadow-sm);
}

.footer-copyright {
    color: var(--text-faint);
    font-size: 0.85rem;
}

[data-theme="dark"] .footer-copyright { color: var(--bone-300); }

/* ============================================================
   Toast
   ============================================================ */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(120px);
    background: var(--petrol-800);
    color: var(--bone-100);
    padding: 14px 26px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    z-index: 2000;
    transition: transform 0.4s var(--ease);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-strong);
}

.toast.show { transform: translateX(-50%) translateY(0); }

.toast.success { background: linear-gradient(135deg, var(--accent-teal), #4A7C7D); }
.toast.error   { background: linear-gradient(135deg, #D54B3F, #A53A30); }
.toast.info    { background: linear-gradient(135deg, var(--petrol-800), var(--petrol-700)); }

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.in {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered card animation */
.achievements-grid .achievement-card:nth-child(1).in { transition-delay: 0ms; }
.achievements-grid .achievement-card:nth-child(2).in { transition-delay: 120ms; }
.achievements-grid .achievement-card:nth-child(3).in { transition-delay: 240ms; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-stats { margin-inline: auto; }
    .hero-buttons { justify-content: center; }
    .hero-eyebrow { margin-inline: auto; }
    .hero-subtitle { margin-inline: auto; }
    .about-content, .contact-content { grid-template-columns: 1fr; }
    .timeline::before { left: 24px; }
    .timeline-marker { left: 24px; }
    .timeline-content { width: calc(100% - 70px); margin-right: 70px !important; margin-left: 0 !important; }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        right: -100%;
        flex-direction: column;
        background: var(--bg);
        width: 100%;
        text-align: center;
        padding: 32px 0;
        border-bottom: 1px solid var(--border);
        transition: right 0.35s var(--ease);
        gap: 18px;
    }
    .nav-menu.active { right: 0; }
    .menu-toggle { display: flex; }
    .logo-text { display: none; }

    .hero { padding-top: calc(var(--header-height) + 24px); }
    .hero-stats { flex-wrap: wrap; gap: 16px; padding: 18px; }
    .stat-divider { display: none; }
    .hero-buttons { flex-direction: column; align-items: stretch; }

    .about-highlights, .tech-stack { grid-template-columns: 1fr; }
    .contact-form { padding: 24px; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-title { font-size: 2.4rem; }
    .stat-number { font-size: 1.8rem; }
    .achievements-grid { grid-template-columns: 1fr; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================================
   ✦ 2026 REDESIGN LAYER ✦
   Glassmorphism · Bento grid · Spotlight · Tilt-glare ·
   Marquee · ScrollSpy · View-Transition theme · Back-to-top
   (لایه‌ی بازطراحی — با cascade روی استایل پایه سوار می‌شود)
   ============================================================ */

:root {
    --glass-bg: rgba(255, 253, 247, 0.55);
    --glass-bg-strong: rgba(255, 253, 247, 0.8);
    --glass-edge: rgba(10, 37, 64, 0.10);
    --glass-highlight: rgba(255, 255, 255, 0.85);
    --glass-blur: 16px;
    --label-bg: #FFFDF7;
    color-scheme: light;
}

/* دارک‌مود واقعی شیشه‌ای: کارت‌های نیمه‌شفاف تیره + متن روشن */
[data-theme="dark"] {
    --surface: rgba(244, 236, 218, 0.055);
    --surface-strong: rgba(244, 236, 218, 0.09);
    --text: var(--bone-200);
    --text-soft: var(--bone-300);
    --text-faint: #9FB1BE;
    --glass-bg: rgba(16, 42, 66, 0.42);
    --glass-bg-strong: rgba(16, 42, 66, 0.78);
    --glass-edge: rgba(244, 236, 218, 0.12);
    --glass-highlight: rgba(255, 255, 255, 0.14);
    --label-bg: #0E2A42;
    color-scheme: dark;
}

/* ---------- Glass surfaces ---------- */
.hero-stats, .hero-eyebrow,
.skill-card, .achievement-card, .timeline-content,
.highlight-item, .tech-item, .contact-item, .contact-form,
.bento-card {
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
    backdrop-filter: blur(var(--glass-blur)) saturate(160%);
    border: 1px solid var(--glass-edge);
    box-shadow: inset 0 1px 0 var(--glass-highlight), var(--shadow-sm);
}

[data-theme="dark"] .hero-stats { background: var(--glass-bg); }
[data-theme="dark"] .icon-btn { background: var(--glass-bg); }

/* اجزایی که قبلاً برای کارت روشن در دارک‌مود تنظیم شده بودند */
[data-theme="dark"] .tag { background: rgba(244, 236, 218, 0.08); color: var(--soft-mint); }
[data-theme="dark"] .skill-progress { background: rgba(244, 236, 218, 0.12); }

/* فرم: فیلدهای نیمه‌شفاف + لیبل شناور با پس‌زمینه‌ی هم‌رنگ */
.form-group input,
.form-group textarea {
    background: color-mix(in srgb, var(--bg) 70%, transparent);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
    background: rgba(6, 24, 38, 0.45);
}

.form-group input:focus + label,
.form-group textarea:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:not(:placeholder-shown) + label {
    background: var(--label-bg);
    border-radius: 6px;
}

/* مرورگرهای بدون backdrop-filter: شیشه‌ی مات‌تر تا متن خوانا بماند */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .hero-stats, .hero-eyebrow,
    .skill-card, .achievement-card, .timeline-content,
    .highlight-item, .tech-item, .contact-item, .contact-form,
    .bento-card {
        background: var(--glass-bg-strong);
    }
}

/* ---------- Header on scroll + ScrollSpy ---------- */
.header.scrolled {
    background: color-mix(in srgb, var(--bg) 62%, transparent);
    box-shadow: 0 12px 32px rgba(6, 24, 38, 0.08);
    border-bottom-color: var(--border-strong);
}

[data-theme="dark"] .header.scrolled {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.nav-menu a.active { color: var(--accent-1); }
.nav-menu a.active::after { width: 100%; }

/* ---------- Spotlight (هاله‌ی نور دنبال‌کننده‌ی موس روی کارت) ---------- */
.spotlight-card { position: relative; }

.card-spotlight {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.35s var(--ease);
    background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%),
        color-mix(in srgb, var(--accent-1) 15%, transparent), transparent 65%);
    z-index: 1;
}

.spotlight-card:hover .card-spotlight { opacity: 1; }

/* ---------- Tilt glare (برق شیشه هنگام تیلت) ---------- */
.tilt-glare {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s var(--ease);
    background: radial-gradient(380px circle at var(--gx, 50%) var(--gy, 50%),
        rgba(255, 255, 255, 0.32), transparent 55%);
    mix-blend-mode: overlay;
    z-index: 2;
}

.tilt:hover .tilt-glare { opacity: 1; }

/* ---------- Marquee ---------- */
.marquee {
    position: relative;
    z-index: 1;
    overflow: hidden;
    padding-block: 16px;
    border-block: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg-elevated) 55%, transparent);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}

.marquee-track {
    display: flex;
    align-items: center;
    gap: 40px;
    width: max-content;
    animation: marqueeScroll 32s linear infinite;
}

.marquee:hover .marquee-track { animation-play-state: paused; }

.marquee-item {
    font-family: 'Sora', 'Vazirmatn', sans-serif;
    font-weight: 600;
    font-size: 0.92rem;
    letter-spacing: 0.04em;
    color: var(--text-soft);
    white-space: nowrap;
}

.marquee-dot {
    color: var(--accent-1);
    font-size: 0.8rem;
}

@keyframes marqueeScroll {
    to { transform: translateX(-50%); }
}

/* ---------- Bento grid (درباره من) ---------- */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: minmax(120px, auto);
    gap: 18px;
    margin-top: 56px;
}

.bento-card {
    border-radius: var(--radius-lg);
    padding: 26px;
    overflow: hidden;
    position: relative;
    color: var(--text);
    transition: transform var(--t-base), border-color var(--t-base), box-shadow var(--t-base);
    transform-style: preserve-3d;
}

.bento-card:hover {
    border-color: color-mix(in srgb, var(--accent-2) 45%, transparent);
    box-shadow: inset 0 1px 0 var(--glass-highlight), var(--shadow-md);
}

.bento-intro {
    grid-column: span 2;
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 18px;
}

.bento-icon {
    font-size: 2.2rem;
    filter: drop-shadow(0 6px 16px rgba(216, 123, 92, 0.35));
}

.bento-intro p {
    font-size: 1.08rem;
    line-height: 1.95;
    color: var(--text-soft);
}

.bento-highlight {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
    font-weight: 600;
}

.bento-highlight .highlight-icon { font-size: 1.9rem; }

.bento-tech { grid-column: span 3; }

.bento-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text);
}

.bento-tech .tech-stack {
    grid-template-columns: repeat(4, 1fr);
}

.bento-cta {
    background: var(--grad-warm);
    border: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 14px;
    color: var(--bone-100);
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: var(--shadow-accent);
}

.bento-cta:hover { transform: translateY(-6px); }

.bento-cta-arrow {
    font-size: 1.5rem;
    transition: transform var(--t-fast);
}

.bento-cta:hover .bento-cta-arrow { transform: translateX(-6px); }

/* ---------- Back to top ---------- */
.back-to-top {
    position: fixed;
    bottom: 28px;
    inset-inline-start: 28px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--glass-edge);
    background: var(--glass-bg-strong);
    -webkit-backdrop-filter: blur(14px) saturate(160%);
    backdrop-filter: blur(14px) saturate(160%);
    color: var(--text);
    font-size: 1.2rem;
    font-family: inherit;
    cursor: pointer;
    display: grid;
    place-items: center;
    box-shadow: inset 0 1px 0 var(--glass-highlight), var(--shadow-md);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: opacity var(--t-base), transform var(--t-base), visibility var(--t-base),
                color var(--t-fast), border-color var(--t-fast);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    color: var(--accent-1);
    border-color: var(--accent-1);
}

/* ---------- Hero: ورود سینمایی خطوط تیتر + شیمر گرادیان ---------- */
.hero-title-line {
    animation: lineRise 0.9s var(--ease) backwards;
}

.hero-title-line:nth-child(2) { animation-delay: 0.18s; }

@keyframes lineRise {
    from { opacity: 0; transform: translateY(46px) skewY(2deg); }
}

.gradient-text {
    background-size: 220% 220%;
    animation: gradFlow 7s ease-in-out infinite alternate;
}

@keyframes gradFlow {
    from { background-position: 0% 50%; }
    to   { background-position: 100% 50%; }
}

/* ---------- View Transition (تم‌سوییچ دایره‌ای) ---------- */
::view-transition-old(root),
::view-transition-new(root) {
    animation: none;
    mix-blend-mode: normal;
}

::view-transition-old(root) { z-index: 1; }
::view-transition-new(root) { z-index: 2; }

/* ---------- Scrollbar & focus ---------- */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--accent-2) 55%, var(--bg));
    border-radius: 8px;
    border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-1); }

:focus-visible {
    outline: 2px solid var(--accent-1);
    outline-offset: 3px;
}

/* ---------- Responsive (لایه‌ی ۲۰۲۶) ---------- */
@media (max-width: 1024px) {
    .bento-grid { grid-template-columns: repeat(2, 1fr); }
    .bento-intro { grid-column: span 2; grid-row: auto; }
    .bento-tech { grid-column: span 2; }
    .bento-tech .tech-stack { grid-template-columns: repeat(2, 1fr); }
    .bento-cta { grid-column: span 2; flex-direction: row; align-items: center; }
}

@media (max-width: 768px) {
    :root { --glass-blur: 10px; }
    .marquee-track { animation-duration: 24s; }
    .nav-menu {
        background: color-mix(in srgb, var(--bg) 72%, transparent);
        -webkit-backdrop-filter: blur(24px) saturate(180%);
        backdrop-filter: blur(24px) saturate(180%);
    }
    .back-to-top { bottom: 20px; inset-inline-start: 20px; }
}

@media (max-width: 560px) {
    .bento-grid { grid-template-columns: 1fr; }
    .bento-intro, .bento-tech, .bento-cta { grid-column: span 1; }
    .bento-tech .tech-stack { grid-template-columns: 1fr 1fr; }
}

/* ---------- Emoji fallback (سازگاری با هر لپ‌تاپ) ----------
   وزیرمتن و Sora گلیف ایموجی ندارند. اگر مرورگر فالبک خودکار را
   انجام ندهد، ایموجی‌ها به شکل مربع خالی دیده می‌شوند.
   این استک، فونت ایموجیِ خودِ سیستم‌عامل را صریحاً اعلام می‌کند. */
.bento-icon,
.highlight-icon,
.skill-icon,
.medal-icon,
.contact-icon,
.marquee-dot,
.sun-icon,
.moon-icon,
.bento-cta-arrow,
.back-to-top,
.loader-text,
.tech-item {
    font-family: 'Vazirmatn', 'Sora',
                 'Segoe UI Emoji', 'Apple Color Emoji', 'Noto Color Emoji',
                 'Segoe UI Symbol', Tahoma, sans-serif;
}