/* =============================================
   HAYL AL-KHADHAMI — WORLD-CLASS PORTFOLIO
   Premium Design System v2.0
   ============================================= */

/* ===== CSS RESET ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 80px
}

body {
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale
}

img {
  max-width: 100%;
  height: auto;
  display: block
}

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

ul,
ol {
  list-style: none
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit
}

input,
textarea {
  font: inherit;
  border: none;
  outline: none;
  background: none
}

/* ===== THEME TOKENS ===== */
:root {
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  /* Transition */
  --ease: cubic-bezier(.4, 0, .2, 1);
  --duration: 0.3s;
  --duration-slow: 0.6s;
  /* Font */
  --font-main: 'Inter', 'Cairo', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  /* Container */
  --container: 1200px;
  /* Navbar */
  --nav-h: 72px;
}

/* ----- DARK THEME (default) ----- */
[data-theme="dark"] {
  --bg-primary: #0a0f1c;
  --bg-secondary: #111827;
  --bg-tertiary: #1a2236;
  --bg-card: rgba(17, 24, 39, .65);
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #10b981;
  --accent-2: #06d6a0;
  --accent-glow: rgba(16, 185, 129, .25);
  --gradient: linear-gradient(135deg, #10b981, #06b6d4);
  --gradient-2: linear-gradient(135deg, #6366f1, #8b5cf6);
  --border: rgba(148, 163, 184, .12);
  --border-hover: rgba(16, 185, 129, .3);
  --glass-bg: rgba(17, 24, 39, .55);
  --glass-border: rgba(148, 163, 184, .08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, .4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, .35);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, .45);
  --nav-bg: rgba(10, 15, 28, .85);
  --nav-border: rgba(148, 163, 184, .08);
  --skill-track: rgba(148, 163, 184, .1);
  --input-bg: rgba(26, 34, 54, .8);
  --scrollbar-track: #111827;
  --scrollbar-thumb: #1e293b;
  color-scheme: dark;
}

/* ----- LIGHT THEME ----- */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, .75);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #059669;
  --accent-2: #0d9488;
  --accent-glow: rgba(5, 150, 105, .2);
  --gradient: linear-gradient(135deg, #059669, #0891b2);
  --gradient-2: linear-gradient(135deg, #4f46e5, #7c3aed);
  --border: rgba(15, 23, 42, .08);
  --border-hover: rgba(5, 150, 105, .3);
  --glass-bg: rgba(255, 255, 255, .6);
  --glass-border: rgba(15, 23, 42, .06);
  --glass-shadow: 0 8px 32px rgba(15, 23, 42, .08);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, .08);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, .12);
  --nav-bg: rgba(248, 250, 252, .9);
  --nav-border: rgba(15, 23, 42, .06);
  --skill-track: rgba(15, 23, 42, .06);
  --input-bg: rgba(241, 245, 249, .9);
  --scrollbar-track: #f1f5f9;
  --scrollbar-thumb: #cbd5e1;
  color-scheme: light;
}

/* ===== BASE STYLES ===== */
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: background var(--duration) var(--ease), color var(--duration) var(--ease);
}

[dir="rtl"] body {
  font-family: 'Cairo', 'Inter', system-ui, sans-serif
}

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

::-webkit-scrollbar {
  width: 8px
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track)
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-full)
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-lg)
}

/* ===== CUSTOM CURSOR (desktop) ===== */
@media(hover:hover)and (pointer:fine) {
  .cursor-dot {
    position: fixed;
    top: 0;
    left: 0;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transition: transform .15s var(--ease);
    mix-blend-mode: difference
  }

  .cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    width: 36px;
    height: 36px;
    border: 2px solid var(--accent);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transition: transform .2s var(--ease), width .2s, height .2s;
    opacity: .5
  }
}

@media(hover:none) {

  .cursor-dot,
  .cursor-ring {
    display: none
  }
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10001;
  transition: opacity .5s var(--ease), visibility .5s
}

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

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

.loader-rings {
  position: relative;
  width: 60px;
  height: 60px;
}

.loader-ring {
  border-radius: 50%;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  position: absolute;
  top: 50%;
  left: 50%;
}

.loader-ring:nth-child(1) {
  width: 60px;
  height: 60px;
  margin-top: -30px;
  margin-left: -30px;
  animation: spin 1s linear infinite;
}

.loader-ring:nth-child(2) {
  width: 45px;
  height: 45px;
  margin-top: -22.5px;
  margin-left: -22.5px;
  animation: spin .8s linear infinite reverse;
}

.loader-ring:nth-child(3) {
  width: 30px;
  height: 30px;
  margin-top: -15px;
  margin-left: -15px;
  animation: spin .6s linear infinite;
}

.loader-text {
  font-size: .875rem;
  color: var(--text-secondary);
  letter-spacing: 2px;
  text-transform: uppercase;
}

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

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 1000;
  transition: all var(--duration) var(--ease);
  background: transparent
}

.navbar.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--nav-border);
  box-shadow: var(--shadow-sm)
}

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

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

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  overflow: hidden
}

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

.logo-text {
  font-weight: 700;
  font-size: 1.125rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text
}

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

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--duration) var(--ease);
  position: relative
}

.nav-link i {
  font-size: .75rem
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent)
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  inset-inline-start: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: var(--gradient);
  border-radius: var(--radius-full)
}

[dir="rtl"] .nav-link.active::after {
  transform: translateX(50%)
}

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

.theme-toggle,
.lang-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--duration) var(--ease);
  font-size: .875rem
}

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

.lang-toggle {
  font-weight: 700;
  font-size: .8rem;
  border: 1px solid var(--border)
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0
}

.hamburger span {
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration) var(--ease)
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px)
}

.hamburger.active span:nth-child(2) {
  opacity: 0
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px)
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-h)
}

.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 0
}

.hero-gradient {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: radial-gradient(ellipse at 30% 50%, var(--accent-glow), transparent 60%), radial-gradient(ellipse at 70% 80%, rgba(99, 102, 241, .12), transparent 50%)
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center
}

.greeting {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm)
}

.wave {
  display: inline-block;
  animation: wave 2.5s infinite;
  transform-origin: 70% 70%
}

@keyframes wave {

  0%,
  60%,
  100% {
    transform: rotate(0)
  }

  10%,
  30% {
    transform: rotate(14deg)
  }

  20% {
    transform: rotate(-8deg)
  }

  40% {
    transform: rotate(-4deg)
  }

  50% {
    transform: rotate(10deg)
  }
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-md)
}

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

.typing-container {
  margin-bottom: var(--space-lg)
}

.subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center
}

.cursor-blink {
  animation: blink 1s infinite;
  margin-inline-start: 2px;
  color: var(--accent)
}

@keyframes blink {

  0%,
  100% {
    opacity: 1
  }

  50% {
    opacity: 0
  }
}

.hero-description {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: var(--space-xl);
  line-height: 1.8
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl)
}

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

.social-link {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--duration) var(--ease);
  font-size: 1.125rem
}

.social-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-3px)
}

/* Hero Image */
.hero-image {
  position: relative;
  display: flex;
  justify-content: center
}

.image-container {
  position: relative;
  width: 360px;
  height: 420px
}

.image-glow {
  position: absolute;
  inset: -20px;
  border-radius: var(--radius-xl);
  background: var(--gradient);
  opacity: .15;
  filter: blur(40px);
  animation: pulse-glow 4s ease-in-out infinite alternate
}

@keyframes pulse-glow {
  0% {
    opacity: .1;
    transform: scale(.95)
  }

  100% {
    opacity: .2;
    transform: scale(1.05)
  }
}

.image-frame {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 2px solid var(--border-hover)
}

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

.floating-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  white-space: nowrap
}

.floating-badge i {
  color: var(--accent);
  font-size: .875rem
}

.badge-1 {
  top: 10%;
  left: -20%;
  animation: float-badge 6s ease-in-out infinite
}

.badge-2 {
  top: 35%;
  right: -15%;
  animation: float-badge 5s ease-in-out 1s infinite
}

.badge-3 {
  bottom: 25%;
  left: -25%;
  animation: float-badge 7s ease-in-out .5s infinite
}

.badge-4 {
  bottom: 5%;
  right: -10%;
  animation: float-badge 5.5s ease-in-out 1.5s infinite
}

@keyframes float-badge {

  0%,
  100% {
    transform: translateY(0)
  }

  50% {
    transform: translateY(-12px)
  }
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  animation: fade-bounce 2s infinite
}

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

.wheel {
  width: 3px;
  height: 8px;
  background: var(--accent);
  border-radius: var(--radius-full);
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-wheel 1.5s infinite
}

@keyframes scroll-wheel {
  0% {
    opacity: 1;
    transform: translateX(-50%) translateY(0)
  }

  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(12px)
  }
}

@keyframes fade-bounce {

  0%,
  100% {
    opacity: .6;
    transform: translateX(-50%) translateY(0)
  }

  50% {
    opacity: 1;
    transform: translateX(-50%) translateY(8px)
  }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .9rem;
  transition: all var(--duration) var(--ease);
  position: relative;
  overflow: hidden
}

.btn i {
  font-size: .8rem;
  transition: transform var(--duration) var(--ease)
}

.btn:hover i {
  transform: translateX(3px)
}

[dir="rtl"] .btn:hover i {
  transform: translateX(-3px)
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 16px var(--accent-glow)
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow)
}

.btn-outline {
  border: 1px solid var(--border);
  color: var(--text-primary)
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow)
}

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

/* ===== SECTIONS ===== */
.section {
  padding: var(--space-4xl) 0
}

.section:nth-child(even) {
  background: var(--bg-secondary)
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl)
}

.section-tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  background: var(--accent-glow);
  color: var(--accent);
  margin-bottom: var(--space-md)
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: var(--space-md)
}

.title-line {
  width: 60px;
  height: 3px;
  background: var(--gradient);
  border-radius: var(--radius-full);
  margin: 0 auto
}

/* ===== GLASS CARD ===== */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  transition: all var(--duration) var(--ease)
}

.glass-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px)
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-3xl);
  align-items: start
}

.about-text .lead {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-md)
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md)
}

.about-text strong {
  color: var(--accent)
}

.about-facts {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-xl)
}

.fact-item {
  display: flex;
  align-items: center;
  gap: var(--space-md)
}

.fact-item i {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0
}

.fact-item strong {
  display: block;
  font-size: .85rem;
  color: var(--text-primary)
}

.fact-item span {
  font-size: .85rem;
  color: var(--text-secondary)
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg)
}

.stat-card {
  padding: var(--space-xl);
  text-align: center
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-glow);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 1.25rem
}

.stat-number {
  font-size: 2.25rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text
}

.stat-label {
  font-size: .8rem;
  color: var(--text-secondary);
  margin-top: var(--space-xs)
}

/* ===== EXPERIENCE / TIMELINE ===== */
.sub-heading {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: var(--space-xl);
  padding-inline-start: var(--space-md);
  border-inline-start: 3px solid var(--accent)
}

.timeline {
  position: relative;
  padding-inline-start: var(--space-xl);
  margin-bottom: var(--space-3xl)
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  inset-inline-start: 0;
  width: 2px;
  background: var(--border)
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-xl)
}

.timeline-marker {
  position: absolute;
  inset-inline-start: calc(-1 * var(--space-xl) - 1px);
  top: var(--space-lg);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transform: translateX(-50%)
}

[dir="rtl"] .timeline-marker {
  transform: translateX(50%)
}

.timeline-marker i {
  font-size: .7rem;
  color: var(--accent)
}

.timeline-content {
  padding: var(--space-xl);
  margin-inline-start: var(--space-lg)
}

.timeline-date {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: .8rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: var(--space-sm)
}

.timeline-content h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-xs)
}

.timeline-location {
  font-size: .85rem;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs)
}

.timeline-content p:not(.timeline-location) {
  font-size: .9rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md)
}

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

.timeline-tags span {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: .7rem;
  font-weight: 600;
  background: var(--accent-glow);
  color: var(--accent)
}

/* Awards Grid */
.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-lg)
}

.award-card {
  padding: var(--space-xl);
  text-align: center;
  position: relative
}

.award-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-glow);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 1.125rem
}

.award-card h4 {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: var(--space-xs)
}

.award-card p {
  font-size: .8rem;
  color: var(--text-secondary)
}

.award-year {
  position: absolute;
  top: var(--space-md);
  inset-inline-end: var(--space-md);
  font-size: .7rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 2px 8px;
  border-radius: var(--radius-full)
}

/* ===== SKILLS ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl)
}

.skill-category {
  padding: var(--space-xl)
}

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl)
}

.skill-cat-header i {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent-glow);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem
}

.skill-cat-header h3 {
  font-size: 1.1rem;
  font-weight: 700
}

.skill-bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-md)
}

.skill-bar {
  position: relative
}

.skill-name {
  display: flex;
  justify-content: space-between;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs)
}

.bar-track {
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--skill-track);
  overflow: hidden
}

.bar-fill {
  height: 100%;
  width: 0;
  border-radius: var(--radius-full);
  background: var(--gradient);
  transition: width 1.5s var(--ease)
}

.skill-bar.animated .bar-fill {
  width: var(--percent)
}

/* ===== PROJECTS ===== */
.project-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl)
}

.filter-btn {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: all var(--duration) var(--ease)
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-xl)
}

.project-card {
  overflow: hidden;
  transition: all var(--duration) var(--ease)
}

.project-card.hidden {
  display: none
}

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--bg-tertiary)
}

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

.project-card:hover .project-image img {
  transform: scale(1.08)
}

.project-image.no-image {
  display: flex;
  align-items: center;
  justify-content: center
}

.project-placeholder-icon {
  font-size: 3rem;
  color: var(--text-muted)
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--duration) var(--ease)
}

.project-card:hover .project-overlay {
  opacity: 1
}

.project-zoom {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  transform: scale(.5);
  transition: transform var(--duration) var(--ease)
}

.project-card:hover .project-zoom {
  transform: scale(1)
}

.project-info {
  padding: var(--space-lg)
}

.project-date {
  font-size: .75rem;
  color: var(--accent);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm)
}

.project-info h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.4
}

.project-info p {
  font-size: .85rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.6
}

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

.project-tags span {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: .7rem;
  font-weight: 600;
  background: var(--accent-glow);
  color: var(--accent)
}

/* ===== PUBLICATIONS ===== */
.publications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
  gap: var(--space-xl)
}

.pub-card {
  padding: var(--space-xl)
}

.pub-type {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: .75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-md)
}

.pub-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.5
}

.pub-authors {
  font-size: .85rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: var(--space-xs)
}

.pub-venue {
  font-size: .8rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md)
}

.pub-abstract {
  font-size: .85rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.7
}

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

.pub-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--accent);
  transition: all var(--duration) var(--ease)
}

.pub-link:hover {
  background: var(--accent);
  color: #fff
}

.pub-status {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border)
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start
}

.contact-intro {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.8
}

.info-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl)
}

.info-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg)
}

.info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent-glow);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  flex-shrink: 0
}

.info-card h4 {
  font-size: .85rem;
  font-weight: 700;
  margin-bottom: 2px
}

.info-card a,
.info-card p {
  font-size: .85rem;
  color: var(--text-secondary)
}

.info-card a:hover {
  color: var(--accent)
}

.quote {
  padding: var(--space-xl);
  position: relative
}

.quote i {
  color: var(--accent);
  font-size: 1.25rem;
  margin-bottom: var(--space-md)
}

.quote p {
  font-size: .95rem;
  color: var(--text-primary);
  font-style: italic;
  margin-bottom: var(--space-sm);
  line-height: 1.7
}

.quote footer {
  font-size: .8rem;
  color: var(--text-muted)
}

/* Form */
.contact-form {
  padding: var(--space-xl)
}

.form-group {
  margin-bottom: var(--space-lg)
}

.form-group label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 1px
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: .9rem;
  transition: all var(--duration) var(--ease)
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow)
}

.form-group textarea {
  resize: vertical;
  min-height: 120px
}

.form-success {
  text-align: center;
  padding: var(--space-xl)
}

.form-success h3 {
  color: var(--accent);
  margin-bottom: var(--space-md)
}

/* ===== FOOTER ===== */
.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--border);
  background: var(--bg-secondary)
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: var(--space-xl);
  align-items: start;
  margin-bottom: var(--space-xl)
}

.footer-brand h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-xs)
}

.footer-brand p {
  font-size: .85rem;
  color: var(--text-secondary)
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md)
}

.footer-nav a {
  font-size: .85rem;
  color: var(--text-secondary);
  transition: color var(--duration)
}

.footer-nav a:hover {
  color: var(--accent)
}

.footer-social {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm)
}

[dir="rtl"] .footer-social {
  justify-content: flex-start
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: .9rem;
  transition: all var(--duration)
}

.footer-social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-glow)
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
  font-size: .8rem;
  color: var(--text-muted)
}

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  inset-inline-end: var(--space-xl);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--duration) var(--ease);
  z-index: 999;
  box-shadow: 0 4px 16px var(--accent-glow)
}

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

.back-to-top:hover {
  transform: translateY(-4px)
}

/* ===== LIGHTBOX ===== */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .9);
  z-index: 10002;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration) var(--ease)
}

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

.lightbox-close {
  position: absolute;
  top: var(--space-xl);
  inset-inline-end: var(--space-xl);
  color: #fff;
  font-size: 2rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--duration)
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, .1)
}

.lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-md);
  object-fit: contain;
  transform: scale(.8);
  transition: transform var(--duration) var(--ease)
}

.lightbox.active .lightbox-img {
  transform: scale(1)
}

/* ===== REVEAL ANIMATIONS ===== */
.reveal-up,
.reveal-left {
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease), transform var(--duration-slow) var(--ease)
}

.reveal-up {
  transform: translateY(30px)
}

.reveal-left {
  transform: translateX(30px)
}

[dir="rtl"] .reveal-left {
  transform: translateX(-30px)
}

.reveal-up.revealed,
.reveal-left.revealed {
  opacity: 1;
  transform: translate(0)
}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center
  }

  .hero-text {
    order: 1
  }

  .hero-image {
    order: 0;
    margin-bottom: var(--space-xl)
  }

  .image-container {
    width: 280px;
    height: 340px
  }

  .hero-description {
    margin-inline: auto
  }

  .hero-buttons {
    justify-content: center
  }

  .hero-social {
    justify-content: center
  }

  .about-grid {
    grid-template-columns: 1fr
  }

  .skills-grid {
    grid-template-columns: 1fr
  }

  .contact-grid {
    grid-template-columns: 1fr
  }

  .publications-grid {
    grid-template-columns: 1fr
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-lg)
  }

  .footer-social {
    justify-content: center
  }

  .floating-badge {
    display: none
  }
}

@media(max-width:768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    inset-inline-end: -100%;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: calc(var(--nav-h) + var(--space-xl)) var(--space-xl) var(--space-xl);
    transition: inset-inline-end var(--duration) var(--ease);
    box-shadow: var(--shadow-lg);
    z-index: 999
  }

  .nav-menu.active {
    inset-inline-end: 0
  }

  .nav-link {
    width: 100%;
    padding: var(--space-md)
  }

  .nav-link.active::after {
    display: none
  }

  .hamburger {
    display: flex
  }

  .hero-content {
    padding: var(--space-xl) var(--space-lg)
  }

  .hero-title {
    font-size: clamp(1.75rem, 6vw, 2.5rem)
  }

  .about-stats {
    grid-template-columns: 1fr 1fr
  }

  .awards-grid {
    grid-template-columns: 1fr 1fr
  }

  .projects-grid {
    grid-template-columns: 1fr
  }

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

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

  .hero-content {
    padding: var(--space-lg) var(--space-md)
  }

  .image-container {
    width: 220px;
    height: 270px
  }

  .about-stats {
    grid-template-columns: 1fr
  }

  .awards-grid {
    grid-template-columns: 1fr
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%
  }

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

/* ===== PRINT ===== */
@media print {

  .navbar,
  .loading-screen,
  .hero-canvas,
  .hero-gradient,
  .scroll-indicator,
  .back-to-top,
  .lightbox,
  .cursor-dot,
  .cursor-ring,
  .theme-toggle,
  .lang-toggle,
  .hamburger,
  .contact-form-wrapper {
    display: none !important
  }

  body {
    color: #000;
    background: #fff
  }

  .glass-card {
    background: #fff;
    border: 1px solid #ddd;
    box-shadow: none;
    backdrop-filter: none
  }

  .section {
    padding: 24px 0;
    page-break-inside: avoid
  }

  .hero {
    min-height: auto;
    padding: 48px 0
  }

  .gradient-text {
    -webkit-text-fill-color: #059669;
    color: #059669
  }
}