/* ═══════════════════════════════════════════════════════════════
   PORTFOLIO — Award-Winning Premium Stylesheet
   ═══════════════════════════════════════════════════════════════ */

/* ─── CSS CUSTOM PROPERTIES ─────────────────────────────────── */
:root {
  /* Colors (overridden dynamically from config.js) */
  --primary: #6366F1;
  --secondary: #8B5CF6;
  --accent: #EC4899;
  --bg-primary: #0B0D17;
  --bg-secondary: #111427;
  --bg-card: rgba(17, 20, 39, 0.7);
  --text-primary: #E2E8F0;
  --text-secondary: #94A3B8;
  --text-muted: #475569;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.4s;
  --duration-slow: 0.8s;

  /* Layout */
  --max-width: 1200px;
  --navbar-height: 72px;
}

/* ─── Light Theme Override ──────────────────────────────────── */
[data-theme="light"] {
  --bg-primary: #F8FAFC;
  --bg-secondary: #F1F5F9;
  --bg-card: rgba(255, 255, 255, 0.8);
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(0, 0, 0, 0.06);
}

/* ─── RESET & BASE ──────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  cursor: default;
  transition: background-color var(--duration-slow) var(--ease-out),
              color var(--duration-slow) var(--ease-out);
}

/* Hide default cursor when custom cursor is active */
body.custom-cursor, body.custom-cursor * {
  cursor: none !important;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--duration-fast) var(--ease-out);
}

ul, ol { list-style: none; }

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

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
  color: inherit;
}

button { cursor: pointer; }

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

/* ─── UTILITY CLASSES ───────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* ─── PRELOADER ─────────────────────────────────────────────── */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

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

.preloader__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.preloader__ring {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 3px solid var(--glass-border);
  border-top-color: var(--primary);
  animation: preloaderSpin 0.8s linear infinite;
}

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

.preloader__text {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* ─── CUSTOM CURSOR ─────────────────────────────────────────── */
.cursor {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999;
  pointer-events: none;
  mix-blend-mode: difference;
}

body.custom-cursor .cursor {
  display: block;
}

.cursor__dot {
  position: absolute;
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s, opacity 0.3s;
}

.cursor__ring {
  position: absolute;
  width: 36px;
  height: 36px;
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width var(--duration-normal) var(--ease-out),
              height var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}

.cursor.hovering .cursor__ring {
  width: 56px;
  height: 56px;
  border-color: var(--primary);
}

.cursor.hovering .cursor__dot {
  width: 4px;
  height: 4px;
  opacity: 0.5;
}

/* ─── SCROLL PROGRESS ───────────────────────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 9998;
  transition: width 0.1s linear;
}

/* ─── NAVBAR ────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-height);
  transition: all var(--duration-normal) var(--ease-out);
}

.navbar.scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid var(--glass-border);
}

.navbar__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.navbar__link {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--space-sm);
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}

.navbar__link:hover, .navbar__link.active {
  color: var(--text-primary);
}

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

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.theme-toggle:hover {
  color: var(--text-primary);
  background: var(--glass-bg);
}

.theme-toggle__icon {
  width: 18px;
  height: 18px;
}

.theme-toggle__icon--sun { display: none; }

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

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: 50%;
  transition: background var(--duration-fast) var(--ease-out);
}

.navbar__hamburger:hover {
  background: var(--glass-bg);
}

.navbar__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
  transform-origin: center;
}

.navbar__hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.navbar__hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-slow) var(--ease-out);
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.mobile-menu__nav a {
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  font-weight: 700;
  color: var(--text-secondary);
  transition: all var(--duration-normal) var(--ease-out);
  transform: translateY(20px);
  opacity: 0;
}

.mobile-menu.active .mobile-menu__nav a {
  transform: translateY(0);
  opacity: 1;
}

.mobile-menu__nav a:hover {
  color: var(--primary);
}

/* ─── BUTTONS ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 60px;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--duration-normal) var(--ease-out);
}

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

.btn--primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 4px 24px rgba(99, 102, 241, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.5);
  transform: translateY(-2px);
}

.btn--ghost {
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
}

.btn--ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(99, 102, 241, 0.08);
}

.btn--full {
  width: 100%;
  justify-content: center;
}

/* ─── SECTION BASE ──────────────────────────────────────────── */
.section {
  padding: var(--space-5xl) 0;
  position: relative;
}

.section__header {
  margin-bottom: var(--space-4xl);
  text-align: center;
}

.section__label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--space-md);
}

.section__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── HERO ──────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.4;
}

.hero__container {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  max-width: 800px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 60px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  backdrop-filter: blur(10px);
  opacity: 0;
  transform: translateY(20px);
}

.hero__title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(30px);
}

.hero__title .name-gradient {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__roles {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2em;
  opacity: 0;
  transform: translateY(20px);
}

.hero__role-text {
  color: var(--primary);
  font-weight: 600;
}

.hero__role-cursor {
  color: var(--primary);
  animation: blink 0.8s step-end infinite;
  font-weight: 300;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero__tagline {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.8;
  opacity: 0;
  transform: translateY(20px);
}

.hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
}

.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeInUp 1s var(--ease-out) 2s forwards;
}

.hero__scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}

.hero__scroll-wheel {
  width: 3px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 3px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollWheel 1.5s ease-in-out infinite;
}

@keyframes scrollWheel {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  100% { transform: translateX(-50%) translateY(12px); opacity: 0; }
}

@keyframes fadeInUp {
  to { opacity: 0.6; }
}

/* ─── ABOUT ─────────────────────────────────────────────────── */
.about__grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-4xl);
  align-items: start;
}

.about__avatar-wrapper {
  position: relative;
}

.about__avatar {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  font-weight: 900;
  color: #fff;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.about__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about__avatar-glow {
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  opacity: 0.15;
  filter: blur(40px);
  z-index: 0;
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.about__content p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.85;
}

.about__content .btn {
  align-self: flex-start;
  margin-top: var(--space-md);
}

/* ─── SKILLS ────────────────────────────────────────────────── */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.skill-card {
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: all var(--duration-normal) var(--ease-out);
  backdrop-filter: blur(10px);
}

.skill-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 8px 40px rgba(99, 102, 241, 0.12);
}

.skill-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.skill-card__name {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  font-size: 0.95rem;
}

.skill-card__icon {
  font-size: 1.2rem;
}

.skill-card__level {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
}

.skill-card__bar {
  width: 100%;
  height: 6px;
  background: var(--glass-bg);
  border-radius: 3px;
  overflow: hidden;
}

.skill-card__fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 3px;
  transition: width 1.2s var(--ease-out);
}

/* ─── PROJECTS ──────────────────────────────────────────────── */
.projects__filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 60px;
  background: var(--glass-bg);
  transition: all var(--duration-fast) var(--ease-out);
}

.filter-btn:hover, .filter-btn.active {
  color: #fff;
  border-color: var(--primary);
  background: var(--primary);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3),
              0 0 60px rgba(99, 102, 241, 0.1);
}

.project-card__image {
  height: 220px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  position: relative;
  overflow: hidden;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.project-card:hover .project-card__image img {
  transform: scale(1.05);
}

/* Auto-generated gradient pattern for cards without images */
.project-card__pattern {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  opacity: 0.3;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.project-card:hover .project-card__pattern {
  opacity: 0.5;
}

.project-card__featured {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: 4px 12px;
  background: var(--primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 60px;
}

.project-card__body {
  padding: var(--space-xl);
}

.project-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.project-card__description {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.project-card__tech span {
  padding: 4px 10px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.project-card__links {
  display: flex;
  gap: var(--space-md);
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  transition: gap var(--duration-fast) var(--ease-out);
}

.project-card__link:hover {
  gap: 10px;
}

.project-card__link svg {
  width: 16px;
  height: 16px;
}

/* ─── PROJECT MODAL ─────────────────────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
}

.modal__content {
  position: relative;
  width: 90%;
  max-width: 640px;
  max-height: 85vh;
  overflow-y: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: var(--space-2xl);
  transform: translateY(20px) scale(0.95);
  transition: transform var(--duration-normal) var(--ease-out);
}

.modal.active .modal__content {
  transform: translateY(0) scale(1);
}

.modal__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.modal__close:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}

.modal__title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--space-md);
  padding-right: var(--space-2xl);
}

.modal__description {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.modal__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.modal__tech span {
  padding: 6px 14px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 500;
}

.modal__links {
  display: flex;
  gap: var(--space-md);
}

/* ─── TIMELINE ──────────────────────────────────────────────── */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: var(--space-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, var(--primary), var(--secondary), transparent);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-3xl);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: calc(-1 * var(--space-2xl) - 5px);
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--primary);
  border-radius: 50%;
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 3px var(--primary);
}

.timeline__content {
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: all var(--duration-normal) var(--ease-out);
  backdrop-filter: blur(10px);
}

.timeline__content:hover {
  border-color: var(--primary);
  transform: translateX(4px);
}

.timeline__role {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.timeline__company {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
}

.timeline__period {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.timeline__description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.timeline__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.timeline__tech span {
  padding: 3px 10px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* ─── CONTACT ───────────────────────────────────────────────── */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-4xl);
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact__info-text {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
}

.contact__email-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  transition: gap var(--duration-fast) var(--ease-out);
}

.contact__email-link:hover {
  gap: var(--space-md);
}

.contact__social-list {
  display: flex;
  gap: var(--space-md);
}

.contact__social-item {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.contact__social-item:hover {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
  transform: translateY(-3px);
}

/* Contact Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.form-group {
  position: relative;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: var(--space-lg) 0 var(--space-sm);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: transparent;
  border-bottom: 1px solid var(--glass-border);
  transition: border-color var(--duration-fast) var(--ease-out);
  resize: none;
}

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

.form-group label {
  position: absolute;
  top: var(--space-lg);
  left: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  pointer-events: none;
  transition: all var(--duration-fast) var(--ease-out);
}

.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;
  font-size: 0.72rem;
  color: var(--primary);
  font-weight: 600;
}

/* Invisible placeholder trick for :not(:placeholder-shown) */
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: transparent;
}

.form-group__line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width var(--duration-normal) var(--ease-out);
}

.form-group input:focus ~ .form-group__line,
.form-group textarea:focus ~ .form-group__line {
  width: 100%;
}

.form-status {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--space-sm);
  font-size: 0.88rem;
  font-weight: 500;
  text-align: center;
}

.form-status.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #10B981;
}

.form-status.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #EF4444;
}

/* ─── FOOTER ────────────────────────────────────────────────── */
.footer {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--glass-border);
}

.footer__grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer__brand-name {
  font-weight: 800;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer__brand-tagline {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer__social {
  display: flex;
  gap: var(--space-md);
}

.footer__social a {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: color var(--duration-fast) var(--ease-out);
}

.footer__social a:hover {
  color: var(--primary);
}

.footer__bottom {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--glass-border);
}

/* ─── BACK TO TOP ───────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  color: var(--text-secondary);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--duration-normal) var(--ease-out);
  backdrop-filter: blur(10px);
}

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

.back-to-top:hover {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ─── REVEAL ANIMATION HELPERS ──────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all var(--duration-slow) var(--ease-out);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: all var(--duration-slow) var(--ease-out);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ─── RESPONSIVE ────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .about__grid {
    grid-template-columns: 220px 1fr;
    gap: var(--space-2xl);
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .projects__grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --navbar-height: 64px;
  }

  .navbar__menu { display: none; }
  .navbar__hamburger { display: flex; }

  .about__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about__avatar-wrapper {
    max-width: 200px;
    margin: 0 auto;
  }

  .about__content .btn {
    align-self: center;
  }

  .skills__grid {
    grid-template-columns: 1fr;
  }

  .projects__grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: var(--space-3xl) 0;
  }

  .footer__grid {
    flex-direction: column;
    gap: var(--space-lg);
    text-align: center;
  }

  .hero__scroll-indicator {
    display: none;
  }

  .btn {
    padding: 12px 24px;
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .hero__container {
    padding: var(--space-xl) var(--space-md);
  }

  .modal__content {
    width: 95%;
    padding: var(--space-xl);
  }

  .timeline {
    padding-left: var(--space-xl);
  }
}

/* ─── SCROLLBAR ─────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}