/* ═══════════════════════════════════════════════════════
   CINEMATIC PORTFOLIO — Immersive Dark Experience
   ═══════════════════════════════════════════════════════ */

:root {
    --bg-0: #050508;
    --bg-1: #0a0a10;
    --bg-2: #101018;
    --bg-3: #16162a;
    --bg-4: #1e1e38;
    --surface: rgba(14, 14, 22, 0.75);
    --text-0: #f8f8fa;
    --text-1: #dcdce0;
    --text-2: #9898a8;
    --text-3: #5c5c72;
    --accent-1: #6366f1;
    --accent-2: #8b5cf6;
    --accent-3: #a78bfa;
    --accent-4: #c4b5fd;
    --cyan: #22d3ee;
    --cyan-glow: rgba(34, 211, 238, 0.08);
    --accent-glow: rgba(99, 102, 241, 0.1);
    --gradient-main: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);
    --gradient-cyan: linear-gradient(135deg, #6366f1, #22d3ee);
    --border: rgba(255, 255, 255, 0.04);
    --border-hover: rgba(99, 102, 241, 0.25);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 32px;
    --shadow-glow: 0 0 60px rgba(99,102,241,0.08);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-expo: cubic-bezier(0.19, 1, 0.22, 1);
    --nav-height: 72px;
}

[data-theme="light"] {
    --bg-0: #fafafc;
    --bg-1: #f2f2f6;
    --bg-2: #e8e8ee;
    --bg-3: #d8d8e2;
    --bg-4: #c0c0d0;
    --surface: rgba(255, 255, 255, 0.8);
    --text-0: #14141f;
    --text-1: #2a2a3a;
    --text-2: #5a5a70;
    --text-3: #8888a0;
    --accent-1: #4f46e5;
    --accent-2: #7c3aed;
    --accent-3: #6d28d9;
    --accent-4: #4f46e5;
    --cyan: #0891b2;
    --cyan-glow: rgba(8, 145, 178, 0.06);
    --accent-glow: rgba(79, 70, 229, 0.06);
    --gradient-main: linear-gradient(135deg, #4f46e5, #7c3aed);
    --gradient-cyan: linear-gradient(135deg, #4f46e5, #0891b2);
    --border: rgba(0, 0, 0, 0.06);
    --border-hover: rgba(79, 70, 229, 0.2);
    --shadow-glow: 0 0 40px rgba(79,70,229,0.06);
}

[data-theme="light"] .cursor-glow { opacity: 0.5; }
[data-theme="light"] .hero__grid-bg { opacity: 0.4; }
[data-theme="light"] .nav--scrolled { background: rgba(250,250,252,0.9); }
[data-theme="light"] .article-modal__backdrop { background: rgba(250,250,252,0.9); }
[data-theme="light"] .article-modal__container { background: #fff; }

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html, body { cursor: none; }
a, button, input, textarea, select { cursor: none; }

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-0);
    color: var(--text-1);
    line-height: 1.6;
    overflow-x: hidden;
}

#starsCanvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

[data-theme="light"] #starsCanvas {
    opacity: 0.3;
}

::selection { background: var(--accent-1); color: #fff; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
}

a { color: inherit; text-decoration: none; }
button { border: none; background: none; font: inherit; color: inherit; }
img { max-width: 100%; display: block; }

/* ═══════════════════════════════════════════════════════
   PRELOADER
   ═══════════════════════════════════════════════════════ */

.preloader {
    position: fixed;
    inset: 0;
    z-index: 100000;
    background: var(--bg-0);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

.preloader--done {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader__inner {
    text-align: center;
}

.preloader__logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-0);
    margin-bottom: 1.5rem;
    animation: preloader-pulse 1.2s ease-in-out infinite;
}

.preloader__bar {
    width: 120px;
    height: 2px;
    background: var(--bg-3);
    border-radius: 2px;
    overflow: hidden;
}

.preloader__fill {
    height: 100%;
    width: 0%;
    background: var(--gradient-cyan);
    border-radius: 2px;
    animation: preloader-fill 1.5s var(--ease-out) forwards;
}

@keyframes preloader-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

@keyframes preloader-fill {
    to { width: 100%; }
}

/* ═══════════════════════════════════════════════════════
   SECTION NAVIGATION DOTS
   ═══════════════════════════════════════════════════════ */

.section-dots {
    position: fixed;
    left: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 900;
}

.section-dots__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-3);
    transition: transform 0.4s var(--ease-out), background-color 0.4s;
    position: relative;
}

.section-dots__dot::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 1px solid transparent;
    transition: border-color 0.4s;
}

.section-dots__dot.active {
    background: var(--cyan);
    transform: scale(1.4);
}

.section-dots__dot.active::before {
    border-color: var(--cyan);
}

.section-dots__dot:hover {
    background: var(--accent-1);
    transform: scale(1.3);
}

@media (max-width: 768px) {
    .section-dots { display: none; }
}

/* ═══════════════════════════════════════════════════════
   MAGNETIC BUTTON EFFECT
   ═══════════════════════════════════════════════════════ */

.magnetic {
    transition: transform 0.3s var(--ease-out);
}

/* ═══════════════════════════════════════════════════════
   SMOOTH REVEAL ANIMATIONS
   ═══════════════════════════════════════════════════════ */

.reveal-text {
    overflow: hidden;
}

.reveal-text span {
    display: inline-block;
    transform: translateY(100%);
    transition: transform 0.7s var(--ease-expo);
}

.reveal-text.revealed span {
    transform: translateY(0);
}

.stagger-reveal > * {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-expo);
}

.stagger-reveal.revealed > * {
    opacity: 1;
    transform: translateY(0);
}

.stagger-reveal.revealed > *:nth-child(1) { transition-delay: 0s; }
.stagger-reveal.revealed > *:nth-child(2) { transition-delay: 0.08s; }
.stagger-reveal.revealed > *:nth-child(3) { transition-delay: 0.16s; }
.stagger-reveal.revealed > *:nth-child(4) { transition-delay: 0.24s; }
.stagger-reveal.revealed > *:nth-child(5) { transition-delay: 0.32s; }

/* ═══════════════════════════════════════════════════════
   3D TILT CARD EFFECT
   ═══════════════════════════════════════════════════════ */

.tilt-card {
    transform-style: preserve-3d;
    transition: transform 0.15s ease-out;
}

.tilt-card > * {
    transform: translateZ(20px);
}

/* ═══════════════════════════════════════════════════════
   SCROLL VELOCITY INDICATOR
   ═══════════════════════════════════════════════════════ */

.velocity-line {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-cyan);
    transform-origin: left;
    transform: scaleX(0);
    z-index: 10002;
    opacity: 0;
    transition: opacity 0.3s;
}

.velocity-line.active {
    opacity: 1;
}

/* ═══════════════════════════════════════════════════════
   HOVER UNDERLINE ANIMATION
   ═══════════════════════════════════════════════════════ */

.nav__link {
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-cyan);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s var(--ease-expo);
}

.nav__link:hover::after,
.nav__link.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* ═══════════════════════════════════════════════════════
   CURSOR & GLOW
   ═══════════════════════════════════════════════════════ */

.cursor-glow {
    position: fixed;
    top: 0; left: 0;
    width: 600px; height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99,102,241,0.09) 0%, rgba(34,211,238,0.04) 35%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    will-change: transform;
    contain: strict;
}

/* Cursor trail canvas */
.cursor-trail-canvas {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 99998;
}

@media (max-width: 768px) { .cursor-trail-canvas { display: none; } }
@media (pointer: coarse) { .cursor-trail-canvas { display: none; } }

/* Section progress bar */
.section-progress {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-cyan);
    transform-origin: left;
    transform: scaleX(0);
    z-index: 10001;
    opacity: 0.7;
}

/* Section focus state */
section.section--focus {
    opacity: 1;
}

section:not(.section--focus) {
    opacity: 0.92;
    transition: opacity 0.6s var(--ease-out);
}



/* Image reveal on scroll */
.img-reveal {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.8s var(--ease-expo), transform 0.8s var(--ease-expo);
}

.img-revealed {
    opacity: 1;
    transform: scale(1);
}

/* Badge pulse */
.badge-pulse {
    animation: badge-ping 1s var(--ease-out);
}

@keyframes badge-ping {
    0% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.4); }
    100% { box-shadow: 0 0 0 12px rgba(34, 211, 238, 0); }
}

/* Field focus glow */
.field--focused {
    box-shadow: 0 0 0 2px rgba(34, 211, 238, 0.2);
    border-radius: var(--radius-md);
}

/* Nav link letter spacing transition */
.nav__link {
    transition: color 0.3s, background 0.3s, letter-spacing 0.3s var(--ease-out);
}

/* Spotlight on cards */
.spotlight::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(500px circle at var(--mx) var(--my), rgba(99,102,241,0.06), transparent 50%);
    opacity: var(--spot, 0);
    transition: opacity 0.4s;
    pointer-events: none;
    z-index: 1;
}

/* ═══════════════════════════════════════════════════════
   PAGE PROGRESS
   ═══════════════════════════════════════════════════════ */

.page-progress {
    position: fixed;
    top: 0; left: 0;
    height: 2px;
    width: 0%;
    background: var(--gradient-cyan);
    z-index: 10001;
    will-change: width;
}

/* ═══════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════ */

.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: background 0.4s;
}

.nav--scrolled {
    background: rgba(5, 5, 8, 0.88);
    backdrop-filter: blur(24px) saturate(1.3);
    box-shadow: 0 1px 0 var(--border);
}

.nav__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
    height: 100%;
    display: grid;
    grid-template-columns: 150px 1fr auto;
    align-items: center;
    gap: 1rem;
}

.nav__logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: -0.5px;
}

.nav__logo-bracket { color: var(--cyan); }

.nav__links {
    display: flex;
    gap: 0.25rem;
    justify-content: center;
}

.nav__link {
    font-size: 0.82rem;
    font-weight: 450;
    color: var(--text-2);
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius-sm);
    transition: color 0.3s, background 0.3s;
    position: relative;
    white-space: nowrap;
    min-width: max-content;
}

.nav__link:hover, .nav__link--active {
    color: var(--text-0);
    background: rgba(255,255,255,0.03);
}

.nav__link--active::after {
    content: '';
    position: absolute;
    bottom: 4px; left: 50%;
    transform: translateX(-50%);
    width: 14px; height: 2px;
    background: var(--cyan);
    border-radius: 1px;
}

.nav__actions { display: flex; align-items: center; gap: 0.75rem; justify-self: end; flex-shrink: 0; white-space: nowrap; }

.music-control {
    position: relative;
    display: flex;
    align-items: center;
    width: 38px;
    height: 38px;
    flex-shrink: 0;
}

.music-toggle {
    width: 38px; height: 38px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--border);
    transition: border-color 0.3s, background-color 0.3s;
    position: relative;
    overflow: hidden;
}

.music-toggle:hover {
    border-color: var(--border-hover);
    background: var(--accent-glow);
}

.music-toggle__icon {
    position: absolute;
    font-size: 0.85rem;
    color: var(--text-2);
    transition: opacity 0.3s, transform 0.3s;
}

.music-toggle__icon--on { opacity: 0; transform: scale(0.5); }
.music-toggle__icon--off { opacity: 1; transform: scale(1); }

.music-toggle.playing .music-toggle__icon--on { opacity: 1; transform: scale(1); color: var(--cyan); }
.music-toggle.playing .music-toggle__icon--off { opacity: 0; transform: scale(0.5); }

.music-control__slider {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) scaleY(0);
    transform-origin: top center;
    opacity: 0;
    padding: 10px 12px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
    margin-top: 8px;
    z-index: 100;
}

.music-control:hover .music-control__slider {
    opacity: 1;
    transform: translateX(-50%) scaleY(1);
}

.music-volume {
    -webkit-appearance: none;
    appearance: none;
    width: 100px;
    height: 4px;
    background: var(--bg-4);
    border-radius: 2px;
    outline: none;
    display: block;
}

.music-volume::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--cyan);
    cursor: none;
    box-shadow: 0 0 8px rgba(34, 211, 238, 0.4);
}

.music-volume::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--cyan);
    border: none;
    cursor: none;
    box-shadow: 0 0 8px rgba(34, 211, 238, 0.4);
}

.lang-switch {
    display: flex;
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    flex-shrink: 0;
}

.lang-switch__btn {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    width: 32px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-3);
    transition: color 0.3s, background-color 0.3s;
    letter-spacing: -0.5px;
}

.lang-switch__btn.active {
    color: var(--bg-0);
    background: var(--cyan);
}

.lang-switch__btn:not(.active):hover {
    color: var(--text-1);
    background: var(--accent-glow);
}

.theme-toggle {
    width: 38px; height: 38px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--border);
    transition: border-color 0.3s, background-color 0.3s;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    border-color: var(--border-hover);
    background: var(--accent-glow);
}

.theme-toggle__icon {
    position: absolute;
    font-size: 0.95rem;
    transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out);
}

.theme-toggle__icon--light { color: #f59e0b; opacity: 0; transform: rotate(-90deg) scale(0.5); }
.theme-toggle__icon--dark { color: var(--cyan); opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-toggle__icon--light { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-toggle__icon--dark { opacity: 0; transform: rotate(90deg) scale(0.5); }

.nav__cta {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.5rem 1.1rem;
    border-radius: var(--radius-sm);
    background: var(--gradient-cyan);
    color: white;
    transition: transform 0.3s var(--ease-out), opacity 0.3s;
    box-shadow: 0 2px 12px rgba(34,211,238,0.15);
    min-width: 100px;
    text-align: center;
    white-space: nowrap;
}

.nav__cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(34,211,238,0.25);
}

.nav__menu-btn { display: none; color: var(--text-1); }

/* ═══════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero__grid-bg {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(99,102,241,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.025) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 70% 50% at 50% 45%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 45%, black 20%, transparent 70%);
}

.hero__particles { position: absolute; inset: 0; pointer-events: none; }

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(99,102,241, var(--alpha, 0.2));
    animation: p-float var(--dur) linear var(--delay) infinite;
    will-change: transform, opacity;
}

@keyframes p-float {
    0%, 100% { transform: translate3d(0,0,0) scale(0.8); opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 0.6; }
    50% { transform: translate3d(var(--dx), var(--dy), 0) scale(1.2); }
}

.hero__content {
    position: relative; z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(var(--nav-height) + 4rem) clamp(1.5rem, 4vw, 3rem) 4rem;
    width: 100%;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background: rgba(34,211,238,0.05);
    border: 1px solid rgba(34,211,238,0.12);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--cyan);
    margin-bottom: 2.5rem;
    opacity: 0; animation: cinematic-up 1s var(--ease-expo) 0.3s forwards;
}

.hero__badge-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: #22c55e;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0.4); }
    50% { box-shadow: 0 0 0 6px rgba(34,197,94,0); }
}

.hero__title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(3rem, 7vw, 5rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -2.5px;
    margin-bottom: 1.5rem;
}

.hero__title-line {
    opacity: 0;
    animation: cinematic-up 1s var(--ease-expo) 0.4s forwards;
}

.hero__title-line--accent {
    display: inline;
}

.hero__title-word {
    display: inline-block;
    background: var(--gradient-cyan);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: transform 0.3s var(--ease-out), filter 0.3s;
}

.hero__title-word--out {
    transform: translateY(8px);
    filter: blur(4px) opacity(0);
}

.hero__subtitle {
    font-size: clamp(0.95rem, 1.6vw, 1.1rem);
    color: var(--text-2);
    max-width: 550px;
    line-height: 1.75;
    margin-bottom: 3rem;
    opacity: 0; animation: cinematic-up 1s var(--ease-expo) 0.85s forwards;
}

.hero__metrics {
    display: flex;
    gap: 3rem;
    margin-bottom: 3rem;
    opacity: 0; animation: cinematic-up 1s var(--ease-expo) 1s forwards;
}

.hero__metric {
    padding-left: 1rem;
    border-left: 2px solid;
    border-image: var(--gradient-cyan) 1;
}

.hero__metric-value {
    display: block;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-0);
    letter-spacing: -1px;
}

.hero__metric-label {
    font-size: 0.72rem;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.hero__socials {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    opacity: 0; animation: cinematic-up 1s var(--ease-expo) 1.1s forwards;
}

.hero__socials a {
    width: 42px; height: 42px;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    color: var(--text-2);
    font-size: 1.1rem;
    transition: transform 0.35s var(--ease-out), color 0.3s, border-color 0.3s, background-color 0.3s;
}

.hero__socials a:hover {
    color: var(--cyan);
    border-color: var(--cyan);
    background: var(--cyan-glow);
    transform: translateY(-3px);
}

.hero__scroll-indicator {
    display: flex; align-items: center; gap: 1rem;
    opacity: 0; animation: cinematic-up 1s var(--ease-expo) 1.3s forwards;
}

.hero__scroll-indicator span {
    font-size: 0.7rem;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.hero__scroll-line {
    width: 40px; height: 1px;
    background: var(--text-3);
    position: relative; overflow: hidden;
}

.hero__scroll-line::after {
    content: '';
    position: absolute; left: -100%; top: 0;
    width: 100%; height: 100%;
    background: var(--cyan);
    animation: scroll-line 2.5s ease-in-out infinite;
}

@keyframes scroll-line { 0% { left: -100%; } 100% { left: 100%; } }

.hero__visual {
    position: absolute;
    top: 0; right: 0;
    width: 55%; height: 100%;
    pointer-events: none;
    opacity: 0.35;
}

#heroCanvas { width: 100%; height: 100%; }

@keyframes cinematic-up {
    from { opacity: 0; transform: translate3d(0, 40px, 0); filter: blur(4px); }
    to { opacity: 1; transform: translate3d(0, 0, 0); filter: blur(0); }
}

/* ═══════════════════════════════════════════════════════
   SECTION HEADERS
   ═══════════════════════════════════════════════════════ */

.section-header { margin-bottom: 4rem; }

.section-header__tag {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--cyan);
    letter-spacing: 1.5px;
    margin-bottom: 1rem;
    padding: 0.3rem 0.8rem;
    background: var(--cyan-glow);
    border: 1px solid rgba(34,211,238,0.1);
    border-radius: 100px;
}

.section-header__title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -1.5px;
    color: var(--text-0);
}

.section-header__title em {
    font-style: normal;
    background: var(--gradient-cyan);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ═══════════════════════════════════════════════════════
   ABOUT
   ═══════════════════════════════════════════════════════ */

.about { padding: 8rem 0; }

.about__layout {
    display: grid;
    grid-template-columns: auto 1.2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.photo-stack {
    position: relative;
    width: 260px;
    height: 340px;
    perspective: 1000px;
    align-self: center;
    transform: translateY(var(--parallax, 0));
}

.photo-stack__card {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 0 1px var(--border);
    transition: transform 0.7s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.6s var(--ease-out);
    transform-origin: center bottom;
    will-change: transform, opacity;
}

.photo-stack__card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

.photo-stack__card--departing {
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.about__lead {
    font-size: 1.2rem;
    color: var(--text-0);
    font-weight: 450;
    margin-bottom: 1.5rem;
    line-height: 1.65;
}

.about__narrative p {
    color: var(--text-2);
    margin-bottom: 1rem;
    font-size: 0.92rem;
}

.about__narrative strong { color: var(--text-0); font-weight: 500; }
.about__stats { display: flex; flex-direction: column; gap: 1rem; }

.stat-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.4rem 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.7s var(--ease-expo), transform 0.7s var(--ease-expo);
}

.stat-card.visible { opacity: 1; transform: translateX(0); }
.stat-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-glow); }

.stat-card__icon {
    width: 46px; height: 46px;
    display: flex; align-items: center; justify-content: center;
    background: var(--cyan-glow);
    border: 1px solid rgba(34,211,238,0.1);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.stat-card__icon i { font-size: 1.1rem; color: var(--cyan); }
.stat-card__content h4 { font-size: 0.92rem; font-weight: 600; color: var(--text-0); }
.stat-card__content p { font-size: 0.82rem; color: var(--text-2); }
.stat-card__meta { font-size: 0.72rem; color: var(--text-3); font-family: 'JetBrains Mono', monospace; }

/* ═══════════════════════════════════════════════════════
   TIMELINE
   ═══════════════════════════════════════════════════════ */

.journey { padding: 8rem 0; background: var(--bg-1); }

.timeline { position: relative; padding: 2rem 0; }

.timeline__line {
    position: absolute;
    left: 50%; top: 0; bottom: 0;
    width: 2px;
    background: var(--border);
    transform: translateX(-50%);
}

.timeline__progress {
    position: absolute; top: 0; left: 0;
    width: 100%; height: 0%;
    background: var(--gradient-cyan);
    border-radius: 1px;
}

.timeline__items { position: relative; }

.timeline__item {
    display: flex;
    justify-content: flex-end;
    padding: 0 0 4rem;
    width: 50%;
    padding-right: 3rem;
    position: relative;
    opacity: 0;
    transform: translateY(30px) scale(0.97);
    transition: opacity 0.8s var(--ease-expo), transform 0.8s var(--ease-expo);
}

.timeline__item.visible { opacity: 1; transform: translateY(0) scale(1); }

.timeline__item:nth-child(even) {
    justify-content: flex-start;
    margin-left: 50%;
    padding-right: 0;
    padding-left: 3rem;
}

.timeline__dot {
    position: absolute;
    right: -7px; top: 1.5rem;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--bg-1);
    border: 2px solid var(--text-3);
    transition: border-color 0.5s var(--ease-out);
    z-index: 2;
}

.timeline__item:nth-child(even) .timeline__dot { right: auto; left: -7px; }

.timeline__item.visible .timeline__dot {
    border-color: var(--cyan);
    background: var(--cyan);
    box-shadow: 0 0 16px rgba(34,211,238,0.5);
}

.timeline__card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
    transition: border-color 0.4s;
    width: 100%;
}

.timeline__card:hover { border-color: var(--border-hover); }

.timeline__date { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; color: var(--cyan); }
.timeline__card h3 { font-family: 'Space Grotesk', sans-serif; font-size: 1.05rem; font-weight: 600; color: var(--text-0); margin: 0.5rem 0; }
.timeline__card p { font-size: 0.85rem; color: var(--text-2); line-height: 1.6; }

.timeline__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
.timeline__tags span {
    font-size: 0.68rem;
    padding: 0.2rem 0.55rem;
    background: var(--cyan-glow);
    border: 1px solid rgba(34,211,238,0.08);
    border-radius: 100px;
    color: var(--cyan);
    font-weight: 500;
}

/* ═══════════════════════════════════════════════════════
   CASE STUDIES
   ═══════════════════════════════════════════════════════ */

.projects { padding: 8rem 0; }
.cases { display: flex; flex-direction: column; gap: 7rem; }

.case {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 3.5rem;
    align-items: center;
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.9s var(--ease-expo), transform 0.9s var(--ease-expo);
}

.case.visible { opacity: 1; transform: translateY(0); }
.case--reversed { grid-template-columns: 1.1fr 1fr; }
.case--reversed .case__visual { order: 2; }
.case--reversed .case__content { order: 1; }

.case__visual {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    transition: transform 0.15s linear;
}

/* Chart bars */
.case__chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 1.5rem;
    height: 100%; width: 100%;
    padding: 1rem;
}

.chart-bar {
    flex: 1;
    height: 0%;
    background: var(--gradient-cyan);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    position: relative;
    transition: height 1.2s var(--ease-expo);
    transition-delay: var(--delay);
    min-width: 40px;
}

.case.visible .chart-bar { height: var(--height); }

.chart-bar::after {
    content: attr(data-value);
    position: absolute; top: -28px; left: 50%;
    transform: translateX(-50%);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem; color: var(--cyan);
    opacity: 0; transition: opacity 0.5s 0.8s;
}

.case.visible .chart-bar::after { opacity: 1; }

.chart-bar::before {
    content: attr(data-label);
    position: absolute; bottom: -24px; left: 50%;
    transform: translateX(-50%);
    font-size: 0.65rem; color: var(--text-3); white-space: nowrap;
}

/* Donut */
.case__donut { position: relative; width: 200px; height: 200px; }
.donut-svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.donut-segment { transition: stroke-dashoffset 1.8s var(--ease-expo); }
.donut-center { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); text-align: center; }
.donut-value { display: block; font-family: 'Space Grotesk',sans-serif; font-size: 1.5rem; font-weight: 700; color: var(--text-0); }
.donut-label { font-size: 0.72rem; color: var(--text-3); }

/* Line chart */
.case__line-chart { width: 100%; height: 100%; display: flex; flex-direction: column; }
.line-svg { flex: 1; width: 100%; }
.line-chart__grid { stroke: var(--border); stroke-width: 0.5; stroke-dasharray: 4 4; }
.line-chart__line {
    fill: none; stroke: var(--cyan); stroke-width: 2.5;
    stroke-linecap: round; stroke-linejoin: round;
    stroke-dasharray: 600; stroke-dashoffset: 600;
    transition: stroke-dashoffset 2.2s var(--ease-expo);
}
.line-chart__line--secondary { stroke: var(--accent-3); stroke-width: 1.5; opacity: 0.5; }
.case.visible .line-chart__line { stroke-dashoffset: 0; }
.line-chart__labels { display: flex; justify-content: space-between; padding-top: 0.75rem; }
.line-chart__labels span { font-size: 0.68rem; color: var(--text-3); }

/* Case content */
.case__meta { display: flex; gap: 1rem; align-items: center; margin-bottom: 0.75rem; }
.case__category {
    font-size: 0.72rem; font-weight: 500; color: var(--cyan);
    padding: 0.25rem 0.7rem;
    background: var(--cyan-glow);
    border-radius: 100px;
    border: 1px solid rgba(34,211,238,0.1);
}
.case__year { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; color: var(--text-3); }
.case__title { font-family: 'Space Grotesk', sans-serif; font-size: 1.5rem; font-weight: 700; color: var(--text-0); margin-bottom: 1.25rem; letter-spacing: -0.5px; }
.case__description p { font-size: 0.88rem; color: var(--text-2); margin-bottom: 0.7rem; line-height: 1.7; }
.case__description strong { color: var(--text-0); font-weight: 500; }
.case__stack { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 1.5rem 0; }
.case__stack span {
    font-size: 0.7rem; padding: 0.28rem 0.65rem;
    background: var(--bg-3); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-2);
}
.case__link {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-size: 0.85rem; font-weight: 500; color: var(--cyan);
    transition: gap 0.3s var(--ease-out), color 0.3s;
}
.case__link:hover { gap: 0.8rem; color: var(--accent-3); }

/* ═══════════════════════════════════════════════════════
   SKILLS
   ═══════════════════════════════════════════════════════ */

.skills { padding: 8rem 0; background: var(--bg-1); }

.skills__radar {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 4rem;
    align-items: center;
}

.skills__chart { display: flex; justify-content: center; }
#skillsRadar { max-width: 350px; }

.skills__list { display: flex; flex-direction: column; gap: 2.5rem; }
.skill-group__title {
    display: flex; align-items: center; gap: 0.6rem;
    font-size: 0.88rem; font-weight: 600; color: var(--text-0);
    margin-bottom: 1.2rem;
}
.skill-group__indicator { width: 10px; height: 10px; border-radius: 3px; background: var(--color); }
.skill-group__items { display: flex; flex-direction: column; gap: 0.85rem; }

.skill-item { display: flex; align-items: center; gap: 1rem; }
.skill-item__name { font-size: 0.8rem; color: var(--text-2); min-width: 110px; font-weight: 450; }
.skill-item__bar { flex: 1; height: 5px; background: var(--bg-3); border-radius: 3px; overflow: hidden; }
.skill-item__fill {
    height: 100%; width: 0%; border-radius: 3px;
    background: var(--gradient-cyan);
    transition: width 1.4s var(--ease-expo);
}
.skill-item__fill.visible { width: calc(var(--target-width) * 1%); }

/* ═══════════════════════════════════════════════════════
   BLOG
   ═══════════════════════════════════════════════════════ */

.blog { padding: 8rem 0; }

.blog__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 1.5rem;
}

.blog-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex; flex-direction: column;
    position: relative;
    opacity: 0;
    transform: translateY(30px) scale(0.96);
    transition: opacity 0.8s var(--ease-expo), transform 0.8s var(--ease-expo), border-color 0.4s;
}

.blog-card.visible { opacity: 1; transform: translateY(0) scale(1); }
.blog-card:hover { border-color: var(--border-hover); box-shadow: 0 12px 40px rgba(0,0,0,0.2); transform: translateY(-4px) scale(1); }
.blog-card--featured { grid-row: span 2; }

.blog-card__image { position: relative; overflow: hidden; }
.blog-card--featured .blog-card__image { height: 220px; }

.blog-card__placeholder {
    width: 100%; height: 140px;
    background: linear-gradient(135deg, rgba(34,211,238,0.05), rgba(99,102,241,0.05));
    display: flex; align-items: center; justify-content: center;
    border-bottom: 1px solid var(--border);
}
.blog-card--featured .blog-card__placeholder { height: 100%; }
.blog-card__placeholder i { font-size: 2.5rem; color: var(--cyan); opacity: 0.5; }

.blog-card__content { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.blog-card__meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; }
.blog-card__tag { font-size: 0.68rem; font-weight: 500; color: var(--cyan); padding: 0.2rem 0.6rem; background: var(--cyan-glow); border-radius: 100px; }
.blog-card__date { font-size: 0.7rem; color: var(--text-3); font-family: 'JetBrains Mono', monospace; }
.blog-card h3 { font-family: 'Space Grotesk', sans-serif; font-size: 1rem; font-weight: 600; color: var(--text-0); margin-bottom: 0.5rem; line-height: 1.4; }
.blog-card--featured h3 { font-size: 1.25rem; }
.blog-card p { font-size: 0.82rem; color: var(--text-2); line-height: 1.6; flex: 1; }

.blog-card__link {
    display: inline-flex; align-items: center; gap: 0.4rem;
    margin-top: 1rem; font-size: 0.8rem; font-weight: 500;
    color: var(--cyan); padding: 0;
    transition: gap 0.3s var(--ease-out);
}
.blog-card__link:hover { gap: 0.7rem; }

/* ═══════════════════════════════════════════════════════
   RESUME
   ═══════════════════════════════════════════════════════ */

.resume { padding: 8rem 0; background: var(--bg-1); }

.resume__layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.resume__preview { perspective: 1000px; }

.resume__paper {
    background: linear-gradient(145deg, var(--bg-3), var(--bg-2));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transform: rotateY(-3deg) rotateX(2deg);
    transition: transform 0.6s var(--ease-expo);
    box-shadow: 0 30px 80px rgba(0,0,0,0.4);
}

.resume__paper:hover { transform: rotateY(0) rotateX(0); }

.resume__paper-header { margin-bottom: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.resume__paper-header h3 { font-family: 'Space Grotesk', sans-serif; font-size: 1.5rem; font-weight: 700; color: var(--text-0); }
.resume__paper-header p { color: var(--text-2); font-size: 0.85rem; }

.resume__paper-section { margin-bottom: 1.5rem; }
.resume__paper-section h4 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 1.2px; color: var(--cyan); margin-bottom: 1rem; }
.resume__entry { margin-bottom: 1rem; padding-left: 1rem; border-left: 2px solid var(--border); }
.resume__entry-title { font-size: 0.88rem; font-weight: 600; color: var(--text-0); }
.resume__entry-date { font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; color: var(--text-3); float: right; }
.resume__entry p { font-size: 0.8rem; color: var(--text-2); }
.resume__badges { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.resume__badge {
    font-size: 0.7rem; padding: 0.3rem 0.7rem;
    background: var(--cyan-glow); border: 1px solid rgba(34,211,238,0.1);
    border-radius: 100px; color: var(--cyan); font-weight: 500;
}

.resume__download { text-align: center; }
.resume__stats { display: flex; justify-content: center; gap: 2.5rem; margin-bottom: 2.5rem; }
.resume__stat { text-align: center; }
.resume__stat-number { display: block; font-family: 'Space Grotesk', sans-serif; font-size: 2.5rem; font-weight: 700; color: var(--text-0); letter-spacing: -1px; }
.resume__stat-label { font-size: 0.72rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.8px; }

.resume__btn {
    display: inline-flex; align-items: center; gap: 0.75rem;
    padding: 1rem 2.5rem;
    background: var(--gradient-cyan);
    color: white; border-radius: var(--radius-md);
    font-weight: 500; font-size: 0.92rem;
    transition: transform 0.4s var(--ease-out), opacity 0.3s;
    box-shadow: 0 4px 20px rgba(34,211,238,0.2);
}

.resume__btn:hover { transform: translateY(-3px); box-shadow: 0 10px 35px rgba(34,211,238,0.3); }
.resume__note { margin-top: 1rem; font-size: 0.72rem; color: var(--text-3); }

/* ═══════════════════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════════════════ */

.contact { padding: 8rem 0; }

.contact__layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact__text { font-size: 1rem; color: var(--text-2); line-height: 1.7; margin-bottom: 2.5rem; }
.contact__channels { display: flex; flex-direction: column; gap: 0.7rem; }

.contact__channel {
    display: flex; align-items: center; gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    position: relative; overflow: hidden;
    transition: transform 0.4s var(--ease-out), border-color 0.3s;
}

.contact__channel:hover {
    border-color: var(--border-hover);
    transform: translateX(4px);
    box-shadow: var(--shadow-glow);
}

.contact__channel-icon {
    width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    background: var(--cyan-glow);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.contact__channel-icon i { color: var(--cyan); font-size: 0.95rem; }
.contact__channel-info { flex: 1; }
.contact__channel-label { display: block; font-size: 0.68rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.5px; }
.contact__channel-value { font-size: 0.85rem; color: var(--text-0); font-weight: 450; }
.contact__channel-arrow { color: var(--text-3); font-size: 0.75rem; transition: transform 0.3s, color 0.3s; }
.contact__channel:hover .contact__channel-arrow { transform: translateX(4px); color: var(--cyan); }

/* Form */
.contact__form { display: flex; flex-direction: column; gap: 1.5rem; }

.form-group { position: relative; }
.form-group input, .form-group textarea {
    width: 100%;
    padding: 1.1rem 1rem 0.6rem;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-0);
    font-size: 0.88rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
    resize: vertical;
}

.form-group input:focus, .form-group textarea:focus { border-color: var(--cyan); }

.form-group label {
    position: absolute; left: 1rem; top: 50%; transform: translateY(-50%);
    font-size: 0.85rem; color: var(--text-3);
    pointer-events: none;
    transition: transform 0.3s var(--ease-out), color 0.3s;
}

.form-group textarea ~ label { top: 1.1rem; transform: none; }

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: 0.4rem; transform: none;
    font-size: 0.65rem; color: var(--cyan);
}

.contact__submit {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
    padding: 1rem 2rem;
    background: var(--gradient-cyan);
    color: white; border-radius: var(--radius-md);
    font-weight: 500; font-size: 0.88rem;
    transition: transform 0.4s var(--ease-out), opacity 0.3s;
    box-shadow: 0 4px 20px rgba(34,211,238,0.2);
    align-self: flex-start;
}

.contact__submit:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(34,211,238,0.3); }

/* ═══════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════ */

.footer { padding: 3rem 0; border-top: 1px solid var(--border); }
.footer__inner { display: flex; align-items: center; justify-content: space-between; }
.footer__logo { font-family: 'JetBrains Mono', monospace; font-size: 1rem; color: var(--cyan); }
.footer__brand p { font-size: 0.78rem; color: var(--text-3); margin-top: 0.2rem; }
.footer__links { display: flex; gap: 2rem; }
.footer__links a { font-size: 0.8rem; color: var(--text-3); transition: color 0.3s; }
.footer__links a:hover { color: var(--text-0); }
.footer__copy p { font-size: 0.72rem; color: var(--text-3); }

/* ═══════════════════════════════════════════════════════
   ARTICLE MODAL
   ═══════════════════════════════════════════════════════ */

.article-modal {
    position: fixed; inset: 0; z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden;
    transition: opacity 0.5s var(--ease-smooth), visibility 0s 0.5s;
}

.article-modal.active { opacity: 1; visibility: visible; transition: opacity 0.5s var(--ease-smooth), visibility 0s; }

.article-modal__backdrop {
    position: absolute; inset: 0;
    background: rgba(0,0,0,0.88);
    backdrop-filter: blur(12px);
}

.article-modal__container {
    position: relative;
    width: 90%; max-width: 800px; max-height: 85vh;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow-y: auto;
    box-shadow: 0 40px 100px rgba(0,0,0,0.5), var(--shadow-glow);
    transform: translateY(40px) scale(0.92);
    transition: transform 0.6s var(--ease-expo);
    scrollbar-width: thin;
    scrollbar-color: var(--bg-4) transparent;
}

.article-modal.active .article-modal__container { transform: translateY(0) scale(1); }

.article-modal__close {
    position: sticky; top: 1.5rem; float: right;
    margin: 1.5rem 1.5rem 0 0;
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    background: var(--bg-3);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-2); font-size: 1rem; z-index: 10;
    transition: transform 0.3s var(--ease-out), background-color 0.3s, color 0.3s;
}

.article-modal__close:hover { background: var(--accent-1); color: white; transform: rotate(90deg); }

.article { padding: 3rem; }
.article__header { margin-bottom: 2.5rem; padding-bottom: 2rem; border-bottom: 1px solid var(--border); }
.article__tag { display: inline-block; font-size: 0.7rem; font-weight: 500; color: var(--cyan); padding: 0.25rem 0.7rem; background: var(--cyan-glow); border-radius: 100px; border: 1px solid rgba(34,211,238,0.1); margin-bottom: 1rem; }
.article__header h1 { font-family: 'Space Grotesk', sans-serif; font-size: clamp(1.4rem,3vw,1.9rem); font-weight: 700; color: var(--text-0); letter-spacing: -0.5px; line-height: 1.3; margin-bottom: 0.75rem; }
.article__meta { font-size: 0.8rem; color: var(--text-3); }
.article__body h2 { font-family: 'Space Grotesk', sans-serif; font-size: 1.2rem; font-weight: 600; color: var(--text-0); margin: 2.5rem 0 1rem; }
.article__body h2:first-child { margin-top: 0; }
.article__body p { font-size: 0.9rem; color: var(--text-2); line-height: 1.8; margin-bottom: 1rem; }
.article__body ul, .article__body ol { list-style: none; padding: 0; margin: 1rem 0 1.5rem; }
.article__body li { font-size: 0.88rem; color: var(--text-2); padding: 0.5rem 0 0.5rem 1.5rem; position: relative; line-height: 1.7; }
.article__body ul li::before { content: ''; position: absolute; left: 0; top: 1rem; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); }
.article__body ol { counter-reset: step; }
.article__body ol li { counter-increment: step; }
.article__body ol li::before { content: counter(step); position: absolute; left: 0; top: 0.5rem; width: 18px; height: 18px; display: flex; align-items: center; justify-content: center; font-size: 0.65rem; font-weight: 600; color: var(--cyan); background: var(--cyan-glow); border-radius: 50%; }
.article__body strong { color: var(--text-0); font-weight: 500; }

.article__metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin: 2rem 0; }
.article__metric { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1.2rem; text-align: center; }
.article__metric strong { display: block; font-family: 'Space Grotesk', sans-serif; font-size: 1.4rem; font-weight: 700; color: var(--text-0); margin-bottom: 0.2rem; }
.article__metric span { font-size: 0.68rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.5px; }

.article__cta { margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.article__cta .btn-primary {
    display: inline-flex; align-items: center; gap: 0.6rem;
    padding: 0.85rem 1.75rem;
    background: var(--gradient-cyan);
    color: white; border-radius: var(--radius-md);
    font-weight: 500; font-size: 0.85rem;
    transition: transform 0.4s var(--ease-out), opacity 0.3s;
    box-shadow: 0 4px 20px rgba(34,211,238,0.2);
}
.article__cta .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(34,211,238,0.3); }

/* ═══════════════════════════════════════════════════════
   BACK TO TOP & PROGRESS
   ═══════════════════════════════════════════════════════ */

.page-progress {
    position: fixed; top: 0; left: 0;
    height: 2px; width: 0%;
    background: var(--gradient-cyan);
    z-index: 10001;
    will-change: width;
}

.back-to-top {
    position: fixed; bottom: 2rem; right: 5rem;
    width: 44px; height: 44px;
    border-radius: 50%;
    background: var(--bg-3);
    border: 1px solid var(--border);
    color: var(--text-2); font-size: 0.9rem;
    display: flex; align-items: center; justify-content: center;
    z-index: 900;
    opacity: 0; transform: translateY(20px) scale(0.8);
    pointer-events: none;
    transition: opacity 0.4s var(--ease-expo), transform 0.4s var(--ease-expo), background 0.3s, border-color 0.3s;
}

.back-to-top.visible { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.back-to-top:hover { background: var(--cyan); color: white; border-color: var(--cyan); transform: translateY(-3px) scale(1.05); box-shadow: 0 8px 25px rgba(34,211,238,0.3); }

/* ═══════════════════════════════════════════════════════
   PERFORMANCE
   ═══════════════════════════════════════════════════════ */

.particle { will-change: transform; }
section { contain: layout style; }

/* Theme transition */
body.theme-transitioning,
body.theme-transitioning section,
body.theme-transitioning .nav,
body.theme-transitioning .stat-card,
body.theme-transitioning .timeline__card,
body.theme-transitioning .blog-card,
body.theme-transitioning .contact__channel,
body.theme-transitioning .resume__paper {
    transition: background-color 0.4s, border-color 0.4s, color 0.4s !important;
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
    .hero__visual { width: 40%; opacity: 0.2; }
    .about__layout { grid-template-columns: 1fr; gap: 2rem; }
    .photo-stack { width: 200px; height: 260px; margin: 0 auto 2rem; }
    .skills__radar { grid-template-columns: 1fr; }
    .resume__layout { grid-template-columns: 1fr; gap: 3rem; }
    .blog__grid { grid-template-columns: 1fr 1fr; }
    .blog-card--featured { grid-row: auto; }
}

@media (max-width: 768px) {
    .nav__links { display: none; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(5,5,8,0.97); backdrop-filter: blur(20px); flex-direction: column; padding: 1.5rem 2rem; border-bottom: 1px solid var(--border); }
    .nav__links.active { display: flex; }
    .nav__menu-btn { display: block; }
    .nav__cta { display: none; }

    .hero__visual { display: none; }
    .hero__title { font-size: clamp(2.2rem,9vw,3.2rem); letter-spacing: -1.5px; }
    .hero__metrics { flex-direction: column; gap: 1.5rem; }

    .timeline__line { left: 1rem; }
    .timeline__item, .timeline__item:nth-child(even) { width: 100%; margin-left: 0; padding-left: 3rem; padding-right: 0; justify-content: flex-start; }
    .timeline__dot, .timeline__item:nth-child(even) .timeline__dot { left: 5px; right: auto; }

    .case { grid-template-columns: 1fr; gap: 2rem; }
    .case--reversed { grid-template-columns: 1fr; }
    .case--reversed .case__visual, .case--reversed .case__content { order: unset; }
    .case__visual { aspect-ratio: 16/10; }

    .contact__layout { grid-template-columns: 1fr; gap: 3rem; }
    .blog__grid { grid-template-columns: 1fr; }
    .footer__inner { flex-direction: column; gap: 1.5rem; text-align: center; }

    .article-modal__container { width: 95%; max-height: 92vh; }
    .article { padding: 2rem 1.5rem; }
    .article__metrics { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .hero__title { letter-spacing: -1px; }
    .article__header h1 { font-size: 1.2rem; }
}

/* ═══════════════════════════════════════════════════════
   CUSTOM CURSOR
   ═══════════════════════════════════════════════════════ */

.cursor {
    position: fixed;
    top: 0; left: 0;
    pointer-events: none;
    z-index: 99999;
    mix-blend-mode: difference;
}

.cursor__dot {
    width: 6px; height: 6px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: -3px; left: -3px;
    transition: transform 0.1s, opacity 0.2s;
}

.cursor__ring {
    width: 36px; height: 36px;
    border: 1.5px solid rgba(255,255,255,0.5);
    border-radius: 50%;
    position: absolute;
    top: -18px; left: -18px;
    transition: transform 0.2s var(--ease-out), border-color 0.2s, background-color 0.2s;
    will-change: transform;
}

.cursor--hover .cursor__ring {
    transform: scale(1.55);
    border-color: var(--cyan);
    background: rgba(34,211,238,0.08);
}

.cursor--click .cursor__dot {
    transform: scale(3);
    opacity: 0.5;
}

.cursor--click .cursor__ring {
    transform: scale(0.8);
}

.cursor__label {
    position: absolute;
    top: 28px; left: 50%;
    transform: translateX(-50%);
    font-size: 0.6rem;
    font-weight: 600;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s;
}

.cursor--labeled .cursor__label {
    opacity: 1;
}

@media (max-width: 768px) {
    .cursor, .cursor-glow, .cursor-trail-canvas { display: none; }
    html, body, a, button, input, textarea, select { cursor: auto; }
}

@media (pointer: coarse) {
    .cursor, .cursor-glow, .cursor-trail-canvas { display: none; }
    html, body, a, button, input, textarea, select { cursor: auto; }
}

/* ═══════════════════════════════════════════════════════
   RIPPLE EFFECT
   ═══════════════════════════════════════════════════════ */

.ripple-container {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(34, 211, 238, 0.15);
    transform: scale(0);
    animation: ripple-expand 0.6s ease-out forwards;
    pointer-events: none;
}

@keyframes ripple-expand {
    to { transform: scale(4); opacity: 0; }
}

/* ═══════════════════════════════════════════════════════
   TEXT SCRAMBLE / REVEAL
   ═══════════════════════════════════════════════════════ */

.text-scramble {
    display: inline-block;
    transition: color 0.2s;
}

.word-reveal span {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%);
    transition: opacity 0.5s var(--ease-expo), transform 0.5s var(--ease-expo);
}

.word-reveal.visible span {
    opacity: 1;
    transform: translateY(0);
}

/* ═══════════════════════════════════════════════════════
   TOOLTIP
   ═══════════════════════════════════════════════════════ */

[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    padding: 0.4rem 0.75rem;
    background: var(--bg-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.68rem;
    color: var(--text-0);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s, transform 0.25s var(--ease-out);
    z-index: 100;
}

[data-tooltip]:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ═══════════════════════════════════════════════════════
   DRAG SCROLL (horizontal scroll hint)
   ═══════════════════════════════════════════════════════ */

.drag-scroll {
    cursor: grab;
    user-select: none;
}

.drag-scroll:active {
    cursor: grabbing;
}

.drag-scroll::-webkit-scrollbar { height: 4px; }
.drag-scroll::-webkit-scrollbar-track { background: transparent; }
.drag-scroll::-webkit-scrollbar-thumb { background: var(--bg-4); border-radius: 2px; }

/* ═══════════════════════════════════════════════════════
   HOVER LIFT (universal utility)
   ═══════════════════════════════════════════════════════ */

.hover-lift {
    transition: transform 0.4s var(--ease-expo);
}

.hover-lift:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}

/* ═══════════════════════════════════════════════════════
   KEYBOARD NAV FOCUS RING
   ═══════════════════════════════════════════════════════ */

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

/* ═══════════════════════════════════════════════════════
   STACKED SKILL TAGS (interactive)
   ═══════════════════════════════════════════════════════ */

.skill-item:hover .skill-item__fill {
    filter: brightness(1.4) drop-shadow(0 0 6px rgba(34,211,238,0.3));
}

.skill-item__bar {
    cursor: pointer;
    transition: transform 0.2s var(--ease-out);
}

.skill-item:hover .skill-item__bar {
    transform: scaleY(1.6);
}

/* ═══════════════════════════════════════════════════════
   FLOATING ACTION MENU (FAB)
   ═══════════════════════════════════════════════════════ */

.fab-menu {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 901;
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: 0.75rem;
}

.fab-menu__btn {
    width: 44px; height: 44px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem;
    border: 1px solid var(--border);
    transition: transform 0.35s var(--ease-expo), opacity 0.35s var(--ease-expo);
    opacity: 0;
    transform: scale(0.3) translateY(20px);
    pointer-events: none;
}

.fab-menu.open .fab-menu__btn {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: auto;
}

.fab-menu.open .fab-menu__btn:nth-child(1) { transition-delay: 0s; }
.fab-menu.open .fab-menu__btn:nth-child(2) { transition-delay: 0.04s; }
.fab-menu.open .fab-menu__btn:nth-child(3) { transition-delay: 0.08s; }
.fab-menu.open .fab-menu__btn:nth-child(4) { transition-delay: 0.12s; }
.fab-menu.open .fab-menu__btn:nth-child(5) { transition-delay: 0.16s; }

.fab-menu__btn:hover {
    background: var(--cyan);
    color: white;
    border-color: var(--cyan);
    transform: scale(1.1) translateY(0);
    box-shadow: 0 6px 20px rgba(34,211,238,0.3);
}

.fab-menu__trigger {
    width: 50px; height: 50px;
    border-radius: 50%;
    background: var(--gradient-cyan);
    color: white;
    font-size: 1.2rem;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 6px 25px rgba(34,211,238,0.25);
    transition: transform 0.3s var(--ease-out);
    border: none;
}

.fab-menu__trigger:hover {
    transform: scale(1.08);
    box-shadow: 0 10px 35px rgba(34,211,238,0.35);
}

.fab-menu.open .fab-menu__trigger {
    transform: rotate(45deg);
    background: var(--bg-3);
    border: 1px solid var(--border);
    box-shadow: none;
}

/* ═══════════════════════════════════════════════════════
   TOAST NOTIFICATION
   ═══════════════════════════════════════════════════════ */

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 0.8rem 1.5rem;
    background: var(--bg-3);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--text-0);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    z-index: 10002;
    opacity: 0;
    transition: opacity 0.5s var(--ease-expo), transform 0.5s var(--ease-expo);
    backdrop-filter: blur(12px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast__icon {
    color: var(--cyan);
}

/* ═══════════════════════════════════════════════════════
   COUNT-UP ON HOVER (metrics)
   ═══════════════════════════════════════════════════════ */

.hero__metric {
    cursor: default;
    transition: transform 0.3s var(--ease-out);
}

.hero__metric:hover {
    transform: translateX(4px);
}

.hero__metric:hover .hero__metric-value {
    color: var(--cyan);
    transition: color 0.2s;
}