/* =========================================================================
   STYLE.CSS — Design System & Core Layout
   ========================================================================= */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; }
input, textarea, select { font: inherit; color: inherit; }

/* ---------- Design Tokens ---------- */
:root {
    /* Tell the browser this page is dark-themed, so it renders native
       form controls (inputs, textareas, scrollbars, etc.) with dark-
       appropriate defaults instead of falling back to light UA styling
       that would override our custom appearance. */
    color-scheme: dark;

    /* Colors */
    --bg: #090B10;
    --surface: #111827;
    --surface-elevated: #1A2235;
    --primary: #4F8CFF;
    --secondary: #38E5D6;
    --accent: #7C5CFF;
    --success: #22C55E;
    --warning: #F59E0B;
    --danger: #EF4444;
    --text-primary: #F8FAFC;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;
    --border: rgba(255,255,255,0.08);
    --border-strong: rgba(255,255,255,0.14);
    --glow: rgba(79,140,255,0.35);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--accent));
    --gradient-text: linear-gradient(135deg, #F8FAFC 0%, #CBD5E1 100%);

    /* Typography */
    --font-ar: 'IBM Plex Sans Arabic', 'Inter', system-ui, sans-serif;
    --font-en: 'Inter', 'IBM Plex Sans Arabic', system-ui, sans-serif;

    /* Radius */
    --radius-card: 20px;
    --radius-btn: 16px;
    --radius-img: 24px;
    --radius-badge: 999px;

    /* Spacing */
    --section-y: clamp(64px, 10vw, 120px);
    --section-x: clamp(20px, 5vw, 40px);
    --container-max: 1280px;

    /* Motion */
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
    --dur-fast: 200ms;
    --dur-base: 350ms;
    --dur-slow: 600ms;

    /* Shadows */
    --shadow-soft: 0 20px 60px -20px rgba(0,0,0,0.5);
    --shadow-card: 0 10px 40px -12px rgba(0,0,0,0.45);
    --shadow-glow: 0 0 0 1px rgba(79,140,255,0.12), 0 20px 60px -18px rgba(79,140,255,0.35);
}

/* ---------- Base ---------- */
html { -webkit-text-size-adjust: 100%; }
body {
    background: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-ar);
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
}
body.lang-en, body.lang-tr { font-family: var(--font-en); }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); font-weight: 800; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.75rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }
p { color: var(--text-secondary); }

::selection { background: var(--primary); color: #fff; }

:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    border-radius: 4px;
}

.skip-link {
    position: absolute;
    top: -60px;
    inset-inline-start: 16px;
    background: var(--surface-elevated);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: var(--radius-btn);
    z-index: 999;
    transition: top var(--dur-fast) var(--ease);
    border: 1px solid var(--border-strong);
}
.skip-link:focus { top: 16px; }

/* ---------- Background Atmosphere ---------- */
.bg-atmosphere {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}
.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.45;
    animation: drift 22s ease-in-out infinite alternate;
}
.bg-glow--one { width: 46vw; height: 46vw; top: -12vw; inset-inline-start: -10vw; background: radial-gradient(circle, var(--primary), transparent 70%); }
.bg-glow--two { width: 38vw; height: 38vw; top: 40vh; inset-inline-end: -12vw; background: radial-gradient(circle, var(--accent), transparent 70%); animation-delay: -8s; }
.bg-glow--three { width: 32vw; height: 32vw; bottom: -10vw; inset-inline-start: 20vw; background: radial-gradient(circle, var(--secondary), transparent 70%); animation-delay: -14s; opacity: 0.3; }
.bg-noise {
    position: absolute;
    inset: 0;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Layout ---------- */
.container {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--section-x);
}
.container--narrow { max-width: 860px; }
.section { padding-block: var(--section-y); position: relative; }

.section-heading { max-width: 640px; margin-bottom: clamp(40px, 6vw, 72px); }
.section-heading--center { margin-inline: auto; text-align: center; }
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--primary);
    background: rgba(79,140,255,0.1);
    padding: 6px 16px;
    border-radius: var(--radius-badge);
    border: 1px solid rgba(79,140,255,0.2);
}
.section-title { margin-top: 18px; }
.section-title--start { margin-inline-start: 0; }
.section-desc { margin-top: 16px; color: var(--text-muted); font-size: 1.05rem; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 14px 26px;
    border-radius: var(--radius-btn);
    transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    isolation: isolate;
}
.btn--lg { padding: 16px 30px; font-size: 1rem; }
.btn--sm { padding: 10px 18px; font-size: 0.85rem; border-radius: 12px; }
.btn--primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-glow);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 24px 60px -16px rgba(79,140,255,0.5); }
.btn--ghost {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
    backdrop-filter: blur(12px);
}
.btn--ghost:hover { background: rgba(255,255,255,0.07); transform: translateY(-2px); border-color: rgba(255,255,255,0.24); }
.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background: radial-gradient(circle at var(--x, 50%) var(--y, 50%), rgba(255,255,255,0.25), transparent 60%);
    opacity: 0;
    transition: opacity var(--dur-fast) var(--ease);
}
.btn:active::after { opacity: 1; }

/* ---------- Cards (glassmorphism base) ---------- */
.glass-card {
    background: linear-gradient(180deg, rgba(26,34,53,0.6), rgba(17,24,39,0.5));
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-card);
}

/* ---------- Icons ---------- */
.icon { width: 22px; height: 22px; }
.icon--sm { width: 18px; height: 18px; }
.icon--xs { width: 14px; height: 14px; flex-shrink: 0; }
.icon--menu, .icon--close { width: 22px; height: 22px; }

/* =========================================================================
   NAVIGATION
   ========================================================================= */
.site-nav {
    position: fixed;
    top: 0;
    inset-inline: 0;
    z-index: 100;
    padding-block: 18px;
    transition: background var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease), padding var(--dur-base) var(--ease), backdrop-filter var(--dur-base) var(--ease);
    border-bottom: 1px solid transparent;
}
.site-nav.is-scrolled {
    background: rgba(9,11,16,0.72);
    backdrop-filter: blur(16px);
    border-color: var(--border);
    padding-block: 12px;
}
.site-nav__inner {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--section-x);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.site-nav__brand { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.site-nav__mark {
    width: 38px; height: 38px;
    display: grid; place-items: center;
    border-radius: 12px;
    background: var(--gradient-primary);
    color: #fff;
    font-size: 1rem;
    flex-shrink: 0;
}
.site-nav__name { font-size: 1rem; }
.site-nav__links ul { display: flex; align-items: center; gap: 30px; }
.site-nav__links a {
    font-size: 0.92rem;
    color: var(--text-secondary);
    position: relative;
    padding-block: 4px;
    transition: color var(--dur-fast) var(--ease);
}
.site-nav__links a::after {
    content: '';
    position: absolute;
    inset-inline: 0;
    bottom: -2px;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--dur-base) var(--ease);
}
.site-nav__links a:hover, .site-nav__links a.is-active { color: var(--text-primary); }
.site-nav__links a:hover::after, .site-nav__links a.is-active::after { transform: scaleX(1); }

.site-nav__actions { display: flex; align-items: center; gap: 14px; }
.site-nav__cta { display: inline-flex; }
.site-nav__burger { display: none; width: 40px; height: 40px; place-items: center; position: relative; }
.site-nav__burger .icon--close { display: none; position: absolute; }
.site-nav__burger[aria-expanded="true"] .icon--menu { display: none; }
.site-nav__burger[aria-expanded="true"] .icon--close { display: block; position: static; }

.lang-switcher { position: relative; }
.lang-switcher__toggle {
    display: flex; align-items: center; gap: 6px;
    font-size: 0.85rem; font-weight: 600;
    padding: 8px 12px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-badge);
    color: var(--text-secondary);
}
.lang-switcher__menu {
    position: absolute;
    top: calc(100% + 10px);
    inset-inline-end: 0;
    background: var(--surface-elevated);
    border: 1px solid var(--border-strong);
    border-radius: 14px;
    padding: 6px;
    min-width: 90px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: all var(--dur-fast) var(--ease);
    box-shadow: var(--shadow-soft);
}
.lang-switcher.is-open .lang-switcher__menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-switcher__menu a {
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.lang-switcher__menu a:hover, .lang-switcher__menu a[aria-current="true"] { background: rgba(79,140,255,0.12); color: var(--text-primary); }

.mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--dur-base) var(--ease);
}
.mobile-menu.is-open { max-height: 480px; }
.mobile-menu ul { padding: 20px var(--section-x) 0; display: flex; flex-direction: column; gap: 4px; }
.mobile-menu a { display: block; padding: 12px 0; font-size: 1.05rem; border-bottom: 1px solid var(--border); }
.mobile-menu__langs { display: flex; gap: 10px; padding: 20px var(--section-x); }
.mobile-menu__lang {
    padding: 8px 16px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-badge);
    font-size: 0.85rem;
    font-weight: 600;
}
.mobile-menu__lang.is-active { background: var(--gradient-primary); border-color: transparent; }

/* =========================================================================
   HERO
   ========================================================================= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-block: 140px 80px;
    position: relative;
    overflow: hidden;
}
.hero__shapes { position: absolute; inset: 0; z-index: -1; }
.hero__shape {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--border);
    animation: float-shape 14s ease-in-out infinite;
}
.hero__shape--1 { width: 260px; height: 260px; top: 12%; inset-inline-end: 6%; }
.hero__shape--2 { width: 160px; height: 160px; bottom: 18%; inset-inline-start: 4%; animation-delay: -4s; }
.hero__shape--3 { width: 90px; height: 90px; top: 55%; inset-inline-end: 22%; animation-delay: -9s; border-color: rgba(124,92,255,0.25); }
.hero__particles { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.5; }
.hero__particles circle { fill: var(--primary); animation: twinkle 4s ease-in-out infinite; }
.hero__particles circle:nth-child(odd) { fill: var(--secondary); animation-delay: -2s; }

.hero__inner {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--section-x);
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    gap: clamp(40px, 6vw, 80px);
}
.hero__eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 0.85rem; font-weight: 600;
    color: var(--secondary);
    background: rgba(56,229,214,0.08);
    border: 1px solid rgba(56,229,214,0.22);
    padding: 8px 18px;
    border-radius: var(--radius-badge);
    margin-bottom: 26px;
}
.hero__headline {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 22px;
}
.hero__typing {
    display: flex; align-items: baseline; gap: 8px;
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 22px;
    min-height: 28px;
}
.hero__typing-prefix { color: var(--text-muted); }
.hero__typing-word { color: var(--primary); font-weight: 600; }
.hero__typing-cursor { color: var(--primary); animation: blink 1s step-end infinite; }
.hero__intro { font-size: 1.08rem; max-width: 560px; margin-bottom: 36px; }
.hero__cta-group { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 36px; }
.hero__social { display: flex; gap: 12px; }

.hero__visual { display: flex; justify-content: center; }
.hero__portrait { position: relative; width: min(360px, 80vw); aspect-ratio: 1; }
.hero__portrait-ring {
    position: absolute; inset: -18px;
    border-radius: 50%;
    border: 1px dashed var(--border-strong);
    animation: spin-slow 40s linear infinite;
}
.hero__portrait-frame {
    position: absolute; inset: 0;
    border-radius: 50%;
    background: linear-gradient(160deg, var(--surface-elevated), var(--surface));
    border: 1px solid var(--border-strong);
    display: grid; place-items: center;
    box-shadow: var(--shadow-glow);
    overflow: hidden;
}
.hero__portrait-frame::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(circle at 30% 20%, rgba(79,140,255,0.35), transparent 55%);
}
.hero__portrait-initials {
    font-size: 5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero__portrait-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}
.hero__portrait-badge {
    position: absolute; bottom: 6%; inset-inline-start: -8%;
    background: var(--surface-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-card);
    padding: 14px 20px;
    text-align: center;
    box-shadow: var(--shadow-soft);
}
.hero__counter { display: block; font-size: 1.6rem; font-weight: 800; color: var(--primary); }
.hero__counter-label { font-size: 0.72rem; color: var(--text-muted); white-space: nowrap; }
.hero__portrait-tag {
    position: absolute;
    display: flex; align-items: center; gap: 8px;
    background: var(--surface-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-badge);
    padding: 9px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: var(--shadow-card);
}
.hero__portrait-tag--top { top: 4%; inset-inline-end: -10%; color: var(--secondary); }
.hero__portrait-tag--bottom { bottom: -4%; inset-inline-end: 4%; color: var(--accent); }

.hero__scroll {
    position: absolute;
    bottom: 32px;
    inset-inline-start: 50%;
    transform: translateX(-50%);
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    color: var(--text-muted);
    z-index: 2;
}
.hero__scroll span {
    width: 1px; height: 40px;
    background: linear-gradient(var(--border-strong), transparent);
    position: relative;
    overflow: hidden;
}
.hero__scroll span::after {
    content: '';
    position: absolute;
    top: -100%; inset-inline: 0;
    height: 50%;
    background: var(--primary);
    animation: scroll-line 2s ease-in-out infinite;
}

/* =========================================================================
   ABOUT
   ========================================================================= */
.about__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: clamp(40px, 6vw, 72px);
    align-items: start;
}
.about__text { margin-top: 24px; display: flex; flex-direction: column; gap: 18px; }
.about__text p { font-size: 1.02rem; }
.about__education {
    margin-top: 32px;
    display: flex; align-items: flex-start; gap: 16px;
    padding: 22px;
    border-radius: var(--radius-card);
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
}
.about__education-icon {
    width: 46px; height: 46px; flex-shrink: 0;
    display: grid; place-items: center;
    border-radius: 12px;
    background: rgba(79,140,255,0.12);
    color: var(--primary);
}
.about__education-label { font-size: 0.78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 4px; }
.about__education-degree { font-weight: 600; margin-bottom: 4px; }
.about__education-meta { font-size: 0.85rem; color: var(--text-muted); }

.about__philosophy {
    background: linear-gradient(180deg, rgba(124,92,255,0.08), rgba(17,24,39,0.4));
    border: 1px solid rgba(124,92,255,0.18);
    border-radius: var(--radius-card);
    padding: 30px;
    position: sticky;
    top: 110px;
}
.about__philosophy-eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 0.8rem; font-weight: 600; color: var(--accent);
    margin-bottom: 20px;
}
.about__philosophy-list { display: flex; flex-direction: column; gap: 18px; }
.about__philosophy-list li { display: flex; gap: 12px; align-items: flex-start; }
.about__philosophy-list .icon--xs { margin-top: 4px; color: var(--accent); }
.about__philosophy-list span { font-size: 0.98rem; color: var(--text-secondary); line-height: 1.6; }

/* =========================================================================
   JOURNEY / TIMELINE
   ========================================================================= */
.journey__stages {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-bottom: clamp(56px, 8vw, 96px);
    align-items: start;
    position: relative;
}
.journey__stage { text-align: center; padding-inline: 12px; }
.journey__stage-icon {
    width: 56px; height: 56px;
    margin-inline: auto 12px auto;
    display: grid; place-items: center;
    border-radius: 16px;
    background: var(--surface-elevated);
    border: 1px solid var(--border-strong);
    color: var(--primary);
    margin-bottom: 14px;
}
.journey__stage-title { font-weight: 700; margin-bottom: 6px; }
.journey__stage-text { font-size: 0.88rem; color: var(--text-muted); }
.journey__stage-connector {
    position: relative;
    top: 28px;
    height: 1px;
    background: var(--border-strong);
    align-self: start;
}

.timeline { position: relative; padding-block: 20px; }
.timeline::before {
    content: '';
    position: absolute;
    inset-inline-start: 50%;
    top: 0; bottom: 0;
    width: 2px;
    transform: translateX(-50%);
    background: linear-gradient(180deg, transparent, var(--border-strong) 6%, var(--border-strong) 94%, transparent);
}
.timeline__item {
    position: relative;
    width: calc(50% - 44px);
    margin-bottom: 48px;
}
.timeline__item--left { margin-inline-end: auto; }
.timeline__item--right { margin-inline-start: auto; }
.timeline__marker {
    position: absolute;
    top: 22px;
    width: 40px; height: 40px;
    display: grid; place-items: center;
    border-radius: 50%;
    background: var(--surface-elevated);
    border: 2px solid var(--primary);
    color: var(--primary);
    box-shadow: 0 0 0 6px rgba(9,11,16,1), 0 0 24px rgba(79,140,255,0.4);
    z-index: 2;
}
.timeline__item--left .timeline__marker { inset-inline-end: -64px; }
.timeline__item--right .timeline__marker { inset-inline-start: -64px; }
.timeline__item--current .timeline__marker { border-color: var(--secondary); color: var(--secondary); box-shadow: 0 0 0 6px rgba(9,11,16,1), 0 0 28px rgba(56,229,214,0.55); }

.timeline__card {
    background: linear-gradient(180deg, rgba(26,34,53,0.55), rgba(17,24,39,0.42));
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 26px 28px;
    backdrop-filter: blur(14px);
    transition: transform var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
}
.timeline__card:hover { transform: translateY(-4px); border-color: rgba(79,140,255,0.35); box-shadow: var(--shadow-glow); }
.timeline__item--current .timeline__card { border-color: rgba(56,229,214,0.35); }
.timeline__badge-current {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 0.72rem; font-weight: 700;
    color: var(--bg);
    background: var(--secondary);
    padding: 4px 12px;
    border-radius: var(--radius-badge);
    margin-bottom: 12px;
}
.timeline__period {
    display: inline-block;
    font-size: 0.8rem; font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.02em;
    margin-bottom: 10px;
}
.timeline__title { margin-bottom: 8px; font-size: 1.15rem; }
.timeline__org {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.88rem; font-weight: 600;
    color: var(--secondary);
    margin-bottom: 4px;
}
.timeline__location { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 12px; }
.timeline__desc { font-size: 0.95rem; }

/* =========================================================================
   ACHIEVEMENTS
   ========================================================================= */
.achievements__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.achievement-card {
    padding: 32px 26px;
    text-align: center;
    background: linear-gradient(180deg, rgba(26,34,53,0.55), rgba(17,24,39,0.4));
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    transition: transform var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}
.achievement-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-glow); border-color: rgba(79,140,255,0.3); }
.achievement-card__icon {
    width: 52px; height: 52px;
    display: grid; place-items: center;
    margin-inline: auto;
    border-radius: 14px;
    background: rgba(79,140,255,0.12);
    color: var(--primary);
    margin-bottom: 18px;
}
.achievement-card__stat {
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 10px;
    font-family: 'Inter', sans-serif;
}
.achievement-card__title { font-size: 1rem; margin-bottom: 8px; }
.achievement-card__text { font-size: 0.88rem; }

/* =========================================================================
   SERVICES + EXPERTISE
   ========================================================================= */
.services__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: clamp(56px, 8vw, 96px);
}
.service-card {
    padding: 28px 24px;
    border-radius: var(--radius-card);
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    transition: transform var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease), background var(--dur-base) var(--ease);
}
.service-card:hover { transform: translateY(-4px); border-color: rgba(79,140,255,0.28); background: rgba(255,255,255,0.035); }
.service-card__icon {
    width: 46px; height: 46px;
    display: grid; place-items: center;
    border-radius: 12px;
    background: rgba(124,92,255,0.14);
    color: var(--accent);
    margin-bottom: 16px;
}
.service-card__title { font-size: 1.02rem; margin-bottom: 8px; }
.service-card__text { font-size: 0.88rem; }

.expertise__heading { margin-bottom: 32px; }
.expertise__title { margin-top: 12px; font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
.expertise__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.expertise-card {
    padding: 24px;
    border-radius: var(--radius-card);
    background: linear-gradient(180deg, rgba(26,34,53,0.5), rgba(17,24,39,0.35));
    border: 1px solid var(--border);
}
.expertise-card__head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.expertise-card__icon {
    width: 38px; height: 38px;
    display: grid; place-items: center;
    border-radius: 10px;
    background: rgba(56,229,214,0.12);
    color: var(--secondary);
    flex-shrink: 0;
}
.expertise-card__head h4 { font-size: 0.98rem; }
.expertise-card__list { display: flex; flex-direction: column; gap: 10px; }
.expertise-card__list li {
    font-size: 0.88rem;
    color: var(--text-muted);
    padding-inline-start: 18px;
    position: relative;
}
.expertise-card__list li::before {
    content: '';
    position: absolute;
    inset-inline-start: 0;
    top: 9px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

/* =========================================================================
   OFFERINGS
   ========================================================================= */
.offerings__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.offering-card { display: flex; flex-direction: column; }
.offering-card__link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: auto;
    padding-top: 18px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary);
    transition: gap var(--dur-fast) var(--ease);
}
.offering-card__link:hover { gap: 12px; }

/* =========================================================================
   SKILLS
   ========================================================================= */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.skill-card {
    padding: 28px;
    border-radius: var(--radius-card);
    background: linear-gradient(180deg, rgba(26,34,53,0.55), rgba(17,24,39,0.4));
    border: 1px solid var(--border);
    transition: transform var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}
.skill-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-glow); border-color: rgba(79,140,255,0.3); }
.skill-card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.skill-card__icon {
    width: 46px; height: 46px;
    display: grid; place-items: center;
    border-radius: 12px;
    background: rgba(79,140,255,0.12);
    color: var(--primary);
}
.skill-card__level {
    font-size: 0.72rem; font-weight: 700;
    padding: 5px 12px;
    border-radius: var(--radius-badge);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.skill-card__level--expert { background: rgba(56,229,214,0.14); color: var(--secondary); }
.skill-card__level--advanced { background: rgba(79,140,255,0.14); color: var(--primary); }
.skill-card__level--intermediate { background: rgba(245,158,11,0.14); color: var(--warning); }
.skill-card__level--growing { background: rgba(124,92,255,0.14); color: var(--accent); }
.skill-card__title { font-size: 1.05rem; margin-bottom: 10px; }
.skill-card__text { font-size: 0.88rem; margin-bottom: 20px; }
.skill-card__bar, .language-item__bar {
    height: 6px;
    border-radius: var(--radius-badge);
    background: rgba(255,255,255,0.06);
    overflow: hidden;
}
.skill-card__bar-fill, .language-item__bar-fill {
    display: block;
    height: 100%;
    width: 0;
    border-radius: var(--radius-badge);
    background: var(--gradient-primary);
    transition: width 1.1s var(--ease);
}

/* =========================================================================
   TECHNOLOGY
   ========================================================================= */
.technology__groups { display: flex; flex-direction: column; gap: 30px; }
.technology-group__label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 14px;
}
.technology-group__badges { display: flex; flex-wrap: wrap; gap: 12px; }
.tech-badge {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    border-radius: var(--radius-badge);
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-strong);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.tech-badge:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
    color: var(--text-primary);
    box-shadow: 0 10px 30px -10px var(--glow);
}

/* =========================================================================
   LANGUAGES
   ========================================================================= */
.languages__list { display: flex; flex-direction: column; gap: 26px; }
.language-item {
    padding: 26px 28px;
    border-radius: var(--radius-card);
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
}
.language-item__head { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 14px; gap: 12px; }
.language-item__name { font-size: 1.1rem; }
.language-item__level { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }
.language-item__percent { font-weight: 800; color: var(--primary); font-family: 'Inter', sans-serif; font-size: 1.1rem; }
.language-item__bar { margin-bottom: 14px; }
.language-item__text { font-size: 0.9rem; }

/* =========================================================================
   CONTACT
   ========================================================================= */
.contact { position: relative; }
.contact__glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(60% 60% at 50% 40%, rgba(79,140,255,0.14), transparent 70%);
    pointer-events: none;
}
.contact__box {
    text-align: center;
    padding: clamp(48px, 8vw, 80px) clamp(24px, 6vw, 60px);
    border-radius: 32px;
    background: linear-gradient(180deg, rgba(26,34,53,0.6), rgba(17,24,39,0.4));
    border: 1px solid var(--border-strong);
    box-shadow: var(--shadow-soft);
}
.contact__title { margin-top: 16px; margin-bottom: 16px; }
.contact__desc { max-width: 520px; margin-inline: auto; margin-bottom: 40px; font-size: 1.05rem; }
.contact__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-bottom: 36px; }
.contact__social { display: flex; justify-content: center; gap: 14px; margin-top: 36px; }

/* ---------- Contact form ---------- */
.contact-form {
    max-width: 560px;
    margin-inline: auto;
    text-align: start;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.contact-form__row { display: flex; flex-direction: column; }
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    color-scheme: dark;
    width: 100%;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-strong);
    border-radius: 14px;
    padding: 15px 18px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    resize: vertical;
    transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--text-muted); }
.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255,255,255,0.05);
    box-shadow: 0 0 0 3px rgba(79,140,255,0.18);
}
.contact-form__submit {
    width: 100%;
    margin-top: 4px;
}
.contact-form__submit:disabled { opacity: 0.7; cursor: not-allowed; transform: none; }
.contact-form__status {
    min-height: 20px;
    text-align: center;
    font-size: 0.9rem;
    margin-top: 4px;
    transition: color var(--dur-fast) var(--ease);
}
.contact-form__status.is-success { color: var(--success); }
.contact-form__status.is-error { color: var(--danger); }

/* Honeypot field — invisible to real visitors, present for bots */
.contact-form__hp {
    position: absolute;
    inset-inline-start: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Visually hidden but accessible labels */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---------- Social icon buttons ---------- */
.social-icon {
    width: 44px; height: 44px;
    display: grid; place-items: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-strong);
    color: var(--text-secondary);
    transition: all var(--dur-fast) var(--ease);
}
.social-icon:hover { background: var(--gradient-primary); color: #fff; border-color: transparent; transform: translateY(-3px); }
.social-icon .icon { width: 18px; height: 18px; }

/* =========================================================================
   FOOTER
   ========================================================================= */
.site-footer { border-top: 1px solid var(--border); padding-block: 56px 32px; }
.site-footer__inner { max-width: var(--container-max); margin-inline: auto; padding-inline: var(--section-x); }
.site-footer__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 28px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}
.site-footer__brand { display: flex; align-items: center; gap: 12px; }
.site-footer__name { font-weight: 700; }
.site-footer__title { font-size: 0.85rem; color: var(--text-muted); }
.site-footer__nav ul { display: flex; gap: 22px; flex-wrap: wrap; }
.site-footer__nav a { font-size: 0.88rem; color: var(--text-muted); }
.site-footer__nav a:hover { color: var(--text-primary); }
.site-footer__social { display: flex; gap: 10px; }
.site-footer__bottom {
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
    padding-top: 24px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.back-to-top {
    position: fixed;
    bottom: 28px;
    inset-inline-end: 28px;
    width: 46px; height: 46px;
    display: grid; place-items: center;
    border-radius: 50%;
    background: var(--surface-elevated);
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
    transform: rotate(180deg) translateY(20px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--dur-base) var(--ease);
    z-index: 90;
    box-shadow: var(--shadow-soft);
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: rotate(180deg) translateY(0); }
.back-to-top:hover { background: var(--gradient-primary); }

/* =========================================================================
   404 PAGE
   ========================================================================= */
.error-page { min-height: 100vh; display: grid; place-items: center; padding: 40px; }
.error-page__inner { text-align: center; max-width: 480px; }
.error-page__code {
    display: block;
    font-size: clamp(4rem, 14vw, 8rem);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
    margin-bottom: 16px;
    font-family: 'Inter', sans-serif;
}
.error-page__title { margin-bottom: 14px; }
.error-page__desc { margin-bottom: 32px; }

/* =========================================================================
   PRINT
   ========================================================================= */
@media print {
    .site-nav, .bg-atmosphere, .back-to-top, .hero__shapes, .hero__scroll,
    .lang-switcher, .mobile-menu, .site-footer__social, .contact__glow { display: none !important; }
    body { background: #fff; color: #111; }
    .section { padding-block: 24px; page-break-inside: avoid; }
    a { text-decoration: underline; }
    .glass-card, .timeline__card, .skill-card, .achievement-card, .service-card { border: 1px solid #ccc; box-shadow: none; }
}