/* ========================================================================
   MODERN PRO - Professional IT Portfolio CSS
   Clean, Minimal & Sophisticated Design System
   Author: Tin Vo | Version: 3.0.0
   ======================================================================== */

/* ==================== CSS CUSTOM PROPERTIES ==================== */

:root {
  /* === Color System === */
  /* Primary Colors - Cyberpunk Tech */
  --color-primary: #00D9FF;
  --color-primary-rgb: 0, 217, 255;
  --color-secondary: #7B61FF;
  --color-secondary-rgb: 123, 97, 255;
  --color-accent: #FF6B9D;
  --color-accent-rgb: 255, 107, 157;
  --color-success: #00FF88;
  --color-warning: #FFB800;
  
  /* Background Colors - Deep Dark */
  --bg-primary: #0A0A0F;
  --bg-secondary: #12121A;
  --bg-tertiary: #1A1A25;
  --bg-elevated: #22222F;
  
  /* Glass Effect */
  --glass-bg: rgba(18, 18, 26, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(0, 217, 255, 0.3);
  --glass-blur: blur(20px);
  
  /* Text Colors */
  --text-primary: #FFFFFF;
  --text-secondary: #A0A0B0;
  --text-muted: #606070;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #00D9FF 0%, #7B61FF 50%, #FF6B9D 100%);
  --gradient-blue: linear-gradient(135deg, #00D9FF 0%, #0099CC 100%);
  --gradient-purple: linear-gradient(135deg, #7B61FF 0%, #5B41DF 100%);
  --gradient-pink: linear-gradient(135deg, #FF6B9D 0%, #FF4080 100%);
  --gradient-mesh: radial-gradient(at 40% 20%, rgba(0, 217, 255, 0.15) 0, transparent 50%),
                   radial-gradient(at 80% 0%, rgba(123, 97, 255, 0.12) 0, transparent 50%),
                   radial-gradient(at 0% 50%, rgba(255, 107, 157, 0.1) 0, transparent 50%),
                   radial-gradient(at 80% 50%, rgba(0, 255, 136, 0.08) 0, transparent 50%),
                   radial-gradient(at 0% 100%, rgba(123, 97, 255, 0.1) 0, transparent 50%);
  
  /* Typography */
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Font Sizes - Fluid */
  --text-display: clamp(3rem, 8vw, 5.5rem);
  --text-h1: clamp(2.25rem, 5vw, 3.5rem);
  --text-h2: clamp(1.75rem, 4vw, 2.5rem);
  --text-h3: clamp(1.375rem, 3vw, 1.75rem);
  --text-h4: clamp(1.125rem, 2vw, 1.375rem);
  --text-lg: 1.125rem;
  --text-base: 1rem;
  --text-sm: 0.875rem;
  --text-xs: 0.75rem;
  
  /* 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;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;
  
  /* Shadows & Glows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.6);
  --glow-primary: 0 0 30px rgba(0, 217, 255, 0.4);
  --glow-secondary: 0 0 30px rgba(123, 97, 255, 0.4);
  --glow-accent: 0 0 30px rgba(255, 107, 157, 0.4);
  
  /* Transitions */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --duration-fast: 150ms;
  --duration-base: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 800ms;
  
  /* Z-Index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
  --z-tooltip: 500;
}

/* ==================== RESET & BASE ==================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  cursor: none !important;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--bg-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* ==================== ADVANCED VISUAL EFFECTS ==================== */

/* Main FX Container */
.fx-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

/* Floating Particles Container */
.fx-particles {
  position: absolute;
  inset: 0;
}

.fx-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.4;
  box-shadow: 0 0 10px currentColor;
  animation: particle-float 20s infinite linear;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-primary);
  text-shadow: 0 0 10px currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fx-particle.symbol {
  width: auto;
  height: auto;
  background: none;
  box-shadow: none;
}

@keyframes particle-float {
  0% {
    transform: translate(0, 0) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translate(var(--tx, 100px), var(--ty, -500px)) rotate(360deg);
    opacity: 0;
  }
}

/* Removed grid effect */

/* Removed scan lines effect */
.fx-scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.05) 0px,
    rgba(0, 0, 0, 0.05) 1px,
    transparent 1px,
    transparent 2px
  );
  animation: scanlines-move 8s linear infinite;
  opacity: 0.3;
}

@keyframes scanlines-move {
  0% { transform: translateY(0); }
  100% { transform: translateY(4px); }
}

/* 5. Noise Texture */
.fx-noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.05'/%3E%3C/svg%3E");
  opacity: 0.15;
  animation: noise-anim 0.2s infinite;
  mix-blend-mode: overlay;
}

@keyframes noise-anim {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-5%, -5%); }
  20% { transform: translate(-10%, 5%); }
  30% { transform: translate(5%, -10%); }
  40% { transform: translate(-5%, 15%); }
  50% { transform: translate(-10%, 5%); }
  60% { transform: translate(15%, 0); }
  70% { transform: translate(0, 10%); }
  80% { transform: translate(-15%, 0); }
  90% { transform: translate(10%, 5%); }
}

/* Disable particles on mobile for performance */
@media (max-width: 768px) {
  .fx-particles {
    opacity: 0.5;
  }
  
  .fx-particle {
    animation-duration: 30s;
  }
}

/* Animated Background Mesh */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: var(--gradient-mesh);
  z-index: -2;
  opacity: 0.8;
  animation: meshFloat 25s ease-in-out infinite alternate;
}

@keyframes meshFloat {
  0% { transform: scale(1) translate(0, 0); }
  50% { transform: scale(1.1) translate(-2%, 2%); }
  100% { transform: scale(1) translate(2%, -2%); }
}

/* Grid Pattern Overlay */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: -1;
  pointer-events: none;
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

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

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-smooth);
}

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

/* Selection */
::selection {
  background: rgba(0, 217, 255, 0.3);
  color: var(--text-primary);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-full);
}

/* ==================== CUSTOM CURSOR ==================== */

.cursor {
  position: fixed;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.15s var(--ease-smooth),
              width 0.3s var(--ease-bounce),
              height 0.3s var(--ease-bounce),
              border-color 0.3s var(--ease-smooth);
  transform: translate(-50%, -50%);
  mix-blend-mode: difference;
}

.cursor::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: transform 0.2s var(--ease-smooth);
}

.cursor.hovering {
  width: 50px;
  height: 50px;
  border-color: var(--color-accent);
  background: rgba(255, 107, 157, 0.1);
}

.cursor.hovering::after {
  transform: translate(-50%, -50%) scale(2);
}

/* ==================== INTRO SCREEN ==================== */

.intro-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

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

.intro-content {
  text-align: center;
  animation: intro-fade-in 1.5s ease;
}

@keyframes intro-fade-in {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.intro-title {
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 800;
  font-family: var(--font-display);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
  letter-spacing: 0.1em;
}

.intro-accent {
  color: var(--color-accent);
  -webkit-text-fill-color: var(--color-accent);
}

.intro-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-3xl);
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.intro-click {
  position: relative;
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  transition: all 0.3s ease;
}

.intro-screen:hover .intro-click {
  border-color: var(--color-accent);
  background: rgba(255, 107, 157, 0.1);
  transform: scale(1.05);
}

.intro-click-text {
  font-size: var(--text-lg);
  color: var(--text-primary);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  position: relative;
  z-index: 1;
}

.intro-click-ripple {
  position: absolute;
  inset: -4px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  animation: ripple 2s ease-out infinite;
}

@keyframes ripple {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}

/* ==================== NAVIGATION ==================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-md) 0;
  transition: all var(--duration-base) var(--ease-smooth);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-sm) 0;
}

.navbar__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.navbar__logo-text {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  position: relative;
}

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

.navbar__logo-text::after {
  content: "_";
  animation: blink 1s step-end infinite;
  color: var(--color-primary);
}

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

.navbar__menu {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
}

.navbar__link {
  position: relative;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-sm) 0;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.navbar__link::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--duration-base) var(--ease-smooth);
}

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

.navbar__link:hover::before,
.navbar__link.active::before {
  width: 100%;
}

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

.navbar__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 32px;
  height: 32px;
  padding: 4px;
}

.navbar__toggle-icon {
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--duration-base) var(--ease-smooth);
  transform-origin: center;
}

.navbar__toggle.active .navbar__toggle-icon:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.navbar__toggle.active .navbar__toggle-icon:nth-child(2) {
  opacity: 0;
}

.navbar__toggle.active .navbar__toggle-icon:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu */
@media (max-width: 768px) {
  .navbar__toggle {
    display: flex;
  }
  
  .navbar__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: var(--bg-primary);
    gap: var(--space-2xl);
    transition: right var(--duration-slow) var(--ease-smooth);
  }
  
  .navbar__menu.active {
    right: 0;
  }
  
  .navbar__link {
    font-size: var(--text-h3);
  }
}

/* ==================== SCROLL PROGRESS ==================== */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: calc(var(--z-sticky) + 1);
  background: rgba(255, 255, 255, 0.05);
}

.scroll-progress__bar {
  height: 100%;
  width: 0%;
  background: var(--gradient-primary);
  transition: width 0.1s ease-out;
  box-shadow: 0 0 10px var(--color-primary);
}

/* ==================== SECTION INDICATORS ==================== */

.section-indicators {
  position: fixed;
  right: var(--space-xl);
  top: 50%;
  transform: translateY(-50%);
  z-index: var(--z-fixed);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.section-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-smooth);
  position: relative;
}

.section-indicator::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid transparent;
  transition: all var(--duration-base) var(--ease-smooth);
}

.section-indicator:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.2);
}

.section-indicator.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: var(--glow-primary);
}

.section-indicator.active::before {
  border-color: rgba(0, 217, 255, 0.3);
  animation: pulse-ring 2s ease-out infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

/* ==================== HERO SECTION ==================== */

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

.hero__video-container {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  filter: saturate(0.8);
}

.hero__video-overlay {
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(180deg, rgba(10, 10, 15, 0.2) 0%, rgba(10, 10, 15, 0.6) 100%),
    radial-gradient(ellipse at center, transparent 40%, rgba(10, 10, 15, 0.7) 100%);
}

.hero__content {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-xl);
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero__greeting {
  margin-bottom: var(--space-md);
}

.hero__greeting-text {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: var(--space-sm) var(--space-lg);
  background: rgba(0, 217, 255, 0.1);
  border: 1px solid rgba(0, 217, 255, 0.3);
  border-radius: var(--radius-full);
}

.hero__greeting-text::before {
  content: "//";
  color: var(--color-secondary);
}

.hero__title {
  font-size: var(--text-display);
  font-weight: 800;
  margin-bottom: var(--space-lg);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.hero__title-text {
  display: inline-block;
  background: linear-gradient(135deg, 
    var(--text-primary) 0%, 
    var(--color-primary) 25%, 
    var(--color-secondary) 50%, 
    var(--color-accent) 75%, 
    var(--text-primary) 100%);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientFlow 8s ease infinite;
  position: relative;
}

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

.hero__title-text::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  opacity: 0.5;
}

.hero__tagline {
  font-size: var(--text-h3);
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero__tagline-prefix {
  color: var(--text-muted);
}

.hero__tagline-dynamic {
  color: var(--color-primary);
  font-weight: 600;
  position: relative;
}

.hero__tagline-dynamic::after {
  content: "|";
  animation: cursorBlink 1s step-end infinite;
  color: var(--color-primary);
  margin-left: 2px;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero__description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.8;
}

.hero__cta {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  z-index: 1;
  transition: all var(--duration-base) var(--ease-smooth);
}

.btn i {
  transition: transform var(--duration-base) var(--ease-smooth);
}

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

.btn--primary {
  background: var(--gradient-primary);
  color: var(--bg-primary);
  border: none;
}

.btn--primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
  opacity: 0;
  transition: opacity var(--duration-base);
  z-index: -1;
}

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

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

.btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
}

.btn--secondary:hover {
  border-color: var(--color-primary);
  background: rgba(0, 217, 255, 0.1);
  box-shadow: var(--glow-primary);
  transform: translateY(-3px);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--glass-border);
}

.btn--outline:hover {
  border-color: var(--color-secondary);
  background: rgba(123, 97, 255, 0.1);
  box-shadow: var(--glow-secondary);
}

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

/* Scroll Indicator */
.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-3xl);
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.scroll-indicator__mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator__wheel {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0% { transform: translateX(-50%) translateY(0); opacity: 1; }
  100% { transform: translateX(-50%) translateY(16px); opacity: 0; }
}

/* Hero Particles */
.hero__particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 1;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.5;
  box-shadow: 0 0 10px currentColor;
}

.particle:nth-child(1) {
  left: 10%;
  top: 20%;
  background: var(--color-primary);
  animation: float-particle 15s linear infinite;
}

.particle:nth-child(2) {
  left: 70%;
  top: 30%;
  background: var(--color-accent);
  animation: float-particle 20s linear infinite reverse;
}

.particle:nth-child(3) {
  left: 25%;
  top: 60%;
  background: var(--color-secondary);
  animation: float-particle 18s linear infinite;
}

.particle:nth-child(4) {
  left: 85%;
  top: 70%;
  background: var(--color-success);
  animation: float-particle 22s linear infinite reverse;
}

.particle:nth-child(5) {
  left: 50%;
  top: 40%;
  background: var(--color-primary);
  animation: float-particle 25s linear infinite;
}

@keyframes float-particle {
  0% {
    transform: translate(0, 0) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translate(100px, -200px) rotate(360deg);
    opacity: 0;
  }
}

/* ==================== SECTION COMMON ==================== */

.section {
  position: relative;
  min-height: 100vh;
  padding: var(--space-4xl) var(--space-xl);
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* Video Background for All Sections */
.section__video-container {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.section__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  filter: saturate(0.7);
}

.section__video-overlay {
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(180deg, rgba(10, 10, 15, 0.7) 0%, rgba(10, 10, 15, 0.85) 100%),
    radial-gradient(ellipse at center, transparent 20%, rgba(10, 10, 15, 0.9) 80%);
}

.section__container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

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

.section__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-lg);
  background: rgba(0, 217, 255, 0.1);
  border: 1px solid rgba(0, 217, 255, 0.2);
  border-radius: var(--radius-full);
}

.section__title {
  font-size: var(--text-h1);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}

.section__divider {
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  margin: 0 auto;
}

/* ==================== ABOUT SECTION ==================== */

.section--about {
  background: linear-gradient(180deg, transparent 0%, rgba(18, 18, 26, 0.5) 50%, transparent 100%);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-3xl);
  align-items: start;
}

.about__image-wrapper {
  position: relative;
}

.about__image-container {
  position: relative;
  max-width: 350px;
  margin: 0 auto;
}

.about__image-holographic {
  position: absolute;
  inset: -4px;
  border-radius: var(--radius-xl);
  padding: 4px;
  background: conic-gradient(
    from 0deg,
    #00D9FF 0deg,
    #7B61FF 72deg,
    #FF6B9D 144deg,
    #00FF88 216deg,
    #00D9FF 288deg,
    #7B61FF 360deg
  );
  z-index: 1;
  animation: holographic-spin 3s linear infinite;
  filter: blur(1px);
}

@keyframes holographic-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.about__image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-xl);
  position: relative;
  z-index: 3;
  transition: all 0.3s ease;
}

.about__image-container:hover .about__image {
  animation: glitch 0.3s ease-in-out;
}

@keyframes glitch {
  0% {
    transform: translate(0);
    filter: hue-rotate(0deg);
  }
  20% {
    transform: translate(-2px, 2px);
    filter: hue-rotate(90deg) brightness(1.2);
  }
  40% {
    transform: translate(-2px, -2px);
    filter: hue-rotate(180deg) brightness(0.8);
  }
  60% {
    transform: translate(2px, 2px);
    filter: hue-rotate(270deg) brightness(1.3);
  }
  80% {
    transform: translate(2px, -2px);
    filter: hue-rotate(45deg) brightness(0.9);
  }
  100% {
    transform: translate(0);
    filter: hue-rotate(0deg);
  }
}

.about__image-border {
  position: absolute;
  inset: -8px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  z-index: 1;
  opacity: 0.6;
  animation: border-pulse 3s ease-in-out infinite;
}

@keyframes border-pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.02); }
}

.about__image-glow {
  position: absolute;
  inset: -30px;
  background: radial-gradient(circle, rgba(0, 217, 255, 0.3) 0%, transparent 70%);
  z-index: 0;
  animation: glow-pulse 4s ease-in-out infinite alternate;
}

@keyframes glow-pulse {
  0% { opacity: 0.3; transform: scale(0.95); }
  100% { opacity: 0.6; transform: scale(1.05); }
}

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

.about__bio-title {
  font-size: var(--text-h3);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.about__bio-text {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

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

/* Stats */
.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.stat-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all var(--duration-base) var(--ease-smooth);
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--duration-base) var(--ease-smooth);
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: var(--glow-primary);
}

.stat-card:hover::before {
  transform: scaleX(1);
}

.stat-card__value {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-xs);
}

.stat-card__value::after {
  content: "+";
  font-size: 0.6em;
}

.stat-card__label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Skills */
.about__skills {
  margin-top: var(--space-lg);
}

.about__skills-title {
  font-size: var(--text-h4);
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.skill-category {
  margin-bottom: var(--space-lg);
  padding: var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-base) var(--ease-smooth);
}

.skill-category:hover {
  border-color: rgba(0, 217, 255, 0.3);
}

.skill-category__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.skill-category__header i {
  color: var(--color-primary);
  font-size: 1.2em;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  transition: all var(--duration-base) var(--ease-smooth);
}

.skill-tag:hover {
  color: var(--text-primary);
  border-color: var(--color-primary);
  background: rgba(0, 217, 255, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 217, 255, 0.2);
}

/* ==================== SKILLS & EXPERTISE SECTION ==================== */

.section--projects {
  background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 15, 0.8) 50%, transparent 100%);
}

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

/* Skill Card Icon Style */
.skill-card__icon {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(123, 97, 255, 0.1) 100%);
  position: relative;
  overflow: hidden;
}

.skill-card__icon::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--duration-base);
}

.skill-card__icon i {
  color: var(--color-primary);
  position: relative;
  z-index: 1;
  transition: all var(--duration-base) var(--ease-smooth);
}

.project-card:hover .skill-card__icon::before {
  opacity: 0.1;
}

.project-card:hover .skill-card__icon i {
  transform: scale(1.1) translateY(-5px);
  filter: drop-shadow(0 0 20px var(--color-primary));
}

.project-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--duration-slow) var(--ease-smooth);
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  z-index: 0;
  transition: opacity var(--duration-base);
}

.project-card:hover {
  transform: translateY(-10px) scale(1.02);
  border-color: transparent;
  box-shadow: var(--glow-primary), var(--shadow-xl);
}

.project-card:hover::before {
  opacity: 0.05;
}

.project-card__image-wrapper {
  position: relative;
  height: 220px;
  overflow: hidden;
}

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

.project-card:hover .project-card__image {
  transform: scale(1.1);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 15, 0.9) 100%);
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: var(--space-lg);
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-smooth);
}

.project-card:hover .project-card__overlay {
  opacity: 1;
}

.project-card__link {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: 50%;
  color: var(--bg-primary);
  font-size: 1.2rem;
  transition: transform var(--duration-base) var(--ease-bounce);
}

.project-card__link:hover {
  transform: scale(1.2);
}

.project-card__content {
  padding: var(--space-lg);
  position: relative;
  z-index: 1;
}

.project-card__title {
  font-size: var(--text-h4);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.project-card__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

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

.tech-tag {
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  background: rgba(0, 217, 255, 0.1);
  border: 1px solid rgba(0, 217, 255, 0.2);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}

.tech-tag:hover {
  background: rgba(0, 217, 255, 0.2);
  border-color: var(--color-primary);
}

.projects__cta {
  text-align: center;
  margin-top: var(--space-3xl);
}

/* ==================== CONTACT SECTION ==================== */

.section--contact {
  position: relative;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact__info-title {
  font-size: var(--text-h3);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.contact__info-text {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

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

.contact__method {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-base) var(--ease-smooth);
}

.contact__method:hover {
  border-color: var(--color-primary);
  transform: translateX(8px);
}

.contact__method-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  color: var(--bg-primary);
  font-size: 1.2rem;
}

.contact__method-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 2px;
}

.contact__method-value {
  font-size: var(--text-base);
  color: var(--text-primary);
}

.contact__method-value:hover {
  color: var(--color-primary);
}

/* Social Links */
.contact__social-title {
  font-size: var(--text-h4);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

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

.social-link {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 1.4rem;
  position: relative;
  overflow: hidden;
  transition: all var(--duration-base) var(--ease-smooth);
}

.social-link::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--duration-base);
  z-index: 0;
}

.social-link:nth-child(1)::before { background: var(--gradient-primary); }
.social-link:nth-child(2)::before { background: linear-gradient(135deg, #5865F2, #7289DA); }
.social-link:nth-child(3)::before { background: linear-gradient(135deg, #1DA1F2, #14171A); }
.social-link:nth-child(4)::before { background: linear-gradient(135deg, #0077B5, #00A0DC); }

.social-link:hover {
  transform: translateY(-5px);
  border-color: transparent;
  color: var(--text-primary);
}

.social-link:hover::before {
  opacity: 1;
}

.social-link i {
  position: relative;
  z-index: 1;
}

/* Contact Form */
.contact__form-wrapper {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  transition: all var(--duration-base) var(--ease-smooth);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(0, 217, 255, 0.05);
  box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

/* ==================== FOOTER ==================== */

.footer {
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  border-top: 1px solid var(--glass-border);
  margin-top: var(--space-3xl);
}

.footer__content {
  max-width: 600px;
  margin: 0 auto;
}

.footer__text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.footer__text i {
  color: var(--color-accent);
}

.footer__text--small {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ==================== BACK TO TOP ==================== */

.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 52px;
  height: 52px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  color: var(--bg-primary);
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--duration-base) var(--ease-smooth);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
}

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

.back-to-top:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: var(--glow-primary), var(--shadow-xl);
}

/* ==================== MUSIC PLAYER ==================== */

.music-player {
  position: fixed;
  bottom: var(--space-xl);
  left: var(--space-xl);
  z-index: var(--z-fixed);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  width: 70px;
  transition: all var(--duration-slow) var(--ease-smooth);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.music-player.expanded {
  width: 300px;
}

.music-player__container {
  padding: var(--space-md);
}

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

.music-player__toggle {
  width: 42px;
  height: 42px;
  min-width: 42px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  color: var(--bg-primary);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-base) var(--ease-smooth);
  box-shadow: var(--glow-primary);
}

.music-player__toggle:hover {
  transform: scale(1.1);
}

.music-player__title {
  flex: 1;
  opacity: 0;
  overflow: hidden;
  white-space: nowrap;
  transition: opacity var(--duration-base);
}

.music-player.expanded .music-player__title {
  opacity: 1;
}

.music-player__title-text {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.music-player__visualizer {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 20px;
}

.visualizer-bar {
  width: 3px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
  animation: visualize 0.5s ease-in-out infinite alternate;
}

.visualizer-bar:nth-child(1) { animation-delay: 0s; }
.visualizer-bar:nth-child(2) { animation-delay: 0.1s; }
.visualizer-bar:nth-child(3) { animation-delay: 0.2s; }
.visualizer-bar:nth-child(4) { animation-delay: 0.15s; }

@keyframes visualize {
  0% { height: 4px; }
  100% { height: 16px; }
}

.music-player__content {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: all var(--duration-slow) var(--ease-smooth);
}

.music-player.expanded .music-player__content {
  max-height: 300px;
  opacity: 1;
  margin-top: var(--space-md);
}

.music-player__info {
  text-align: center;
  margin-bottom: var(--space-md);
}

.music-player__track {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.music-player__artist {
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

.music-player__progress {
  margin-bottom: var(--space-md);
}

.music-player__progress-bar {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  cursor: pointer;
  overflow: hidden;
}

.music-player__progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  width: 0%;
  transition: width 0.1s linear;
}

.music-player__time {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.music-player__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.music-player__btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  color: var(--text-secondary);
  transition: all var(--duration-fast);
}

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

.music-player__btn--play {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border: none;
  color: var(--bg-primary);
}

.music-player__btn--play:hover {
  transform: scale(1.1);
  box-shadow: var(--glow-primary);
}

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

.music-player__btn--small {
  width: 28px;
  height: 28px;
  font-size: 0.8rem;
}

.music-player__volume-slider {
  flex: 1;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  cursor: none !important;
}

.music-player__volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: none !important;
  box-shadow: 0 0 8px var(--color-primary);
}

.music-player__volume-slider::-moz-range-thumb {
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: none !important;
  box-shadow: 0 0 8px var(--color-primary);
  border: none;
}

.music-player__volume-value {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  min-width: 35px;
}

/* ==================== ANIMATIONS ==================== */

/* Fade In Up */
[data-animate="fade-up"] {
  opacity: 0;
  transform: translateY(40px);
  transition: all var(--duration-slower) var(--ease-smooth);
}

[data-animate="fade-up"].animate {
  opacity: 1;
  transform: translateY(0);
}

/* Fade In Left */
[data-animate="fade-left"] {
  opacity: 0;
  transform: translateX(40px);
  transition: all var(--duration-slower) var(--ease-smooth);
}

[data-animate="fade-left"].animate {
  opacity: 1;
  transform: translateX(0);
}

/* Fade In Right */
[data-animate="fade-right"] {
  opacity: 0;
  transform: translateX(-40px);
  transition: all var(--duration-slower) var(--ease-smooth);
}

[data-animate="fade-right"].animate {
  opacity: 1;
  transform: translateX(0);
}

/* Scale Up */
[data-animate="scale-up"] {
  opacity: 0;
  transform: scale(0.9);
  transition: all var(--duration-slower) var(--ease-smooth);
}

[data-animate="scale-up"].animate {
  opacity: 1;
  transform: scale(1);
}

/* ==================== RESPONSIVE ==================== */

@media (max-width: 1024px) {
  .section-indicators {
    right: var(--space-md);
  }
  
  .about__grid {
    grid-template-columns: 1fr 1.3fr;
    gap: var(--space-xl);
  }
  
  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-3xl) var(--space-md);
  }
  
  .section-indicators {
    display: none;
  }
  
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  
  .about__image-container {
    max-width: 280px;
  }
  
  .about__stats {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .hero__cta {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
  
  .projects__grid {
    grid-template-columns: 1fr;
  }
  
  .contact__grid {
    gap: var(--space-xl);
  }
  
  .music-player {
    left: var(--space-md);
    bottom: var(--space-md);
  }
  
  .music-player.expanded {
    width: calc(100vw - var(--space-xl));
    max-width: 300px;
  }
  
  .back-to-top {
    right: var(--space-md);
    bottom: var(--space-md);
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .about__stats {
    grid-template-columns: 1fr;
  }
  
  .social-links {
    justify-content: center;
  }
  
  .contact__form-wrapper {
    padding: var(--space-lg);
  }
}

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

/* Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ==================== END OF MODERN PRO CSS ==================== */