/* --- DESIGN SYSTEM & CSS VARIABLES --- */
:root {
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Theme variables default (DARK MODE) */
  --bg-primary: #080710;
  --bg-secondary: #0f0e1c;
  --bg-card: rgba(20, 18, 38, 0.45);
  --bg-card-hover: rgba(28, 25, 53, 0.65);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(139, 92, 246, 0.3);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-primary: #8b5cf6; /* Violet */
  --accent-primary-rgb: 139, 92, 246;
  --accent-secondary: #06b6d4; /* Cyan */
  --accent-secondary-rgb: 6, 182, 212;
  --accent-tertiary: #10b981; /* Emerald */
  --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);
  
  --shadow-primary: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --shadow-card: 0 4px 20px 0 rgba(0, 0, 0, 0.2);
  --glow-primary: 0 0 20px rgba(139, 92, 246, 0.15);
  --glow-secondary: 0 0 20px rgba(6, 182, 212, 0.15);
  
  --glass-blur: blur(12px);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  
  --navbar-height: 80px;
}

/* Light Mode Variables Override */
/* Light Mode Variables Override - Premium Redesign */
[data-theme="light"] {
  --bg-primary: #fcfdff;
  --bg-secondary: #f4f6fc;
  --bg-card: rgba(255, 255, 255, 0.45);
  --bg-card-hover: rgba(255, 255, 255, 0.75);
  --border-color: rgba(124, 58, 237, 0.06);
  --border-color-hover: rgba(124, 58, 237, 0.25);
  
  --text-primary: #0a0f1d;
  --text-secondary: #2c354d;
  --text-muted: #4b5563; /* Darkened from #64748b to meet WCAG AA 4.5:1 on white */
  
  --accent-primary: #7c3aed; /* Vibrant Violet */
  --accent-primary-rgb: 124, 58, 237;
  --accent-secondary: #06b6d4; /* Vibrant Cyan */
  --accent-secondary-rgb: 6, 182, 212;
  --accent-tertiary: #10b981; /* Vibrant Emerald */
  --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
  
  --shadow-primary: 0 20px 40px -15px rgba(124, 58, 237, 0.12);
  --shadow-card: 0 10px 30px -10px rgba(10, 15, 29, 0.05);
  --glow-primary: 0 0 25px rgba(124, 58, 237, 0.12);
  --glow-secondary: 0 0 25px rgba(6, 182, 212, 0.12);
}

/* Light mode dot grid backdrop */
[data-theme="light"] body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: radial-gradient(rgba(124, 58, 237, 0.04) 1.5px, transparent 1.5px);
  background-size: 24px 24px;
  z-index: -2;
  pointer-events: none;
}

[data-theme="light"] .glass-card {
  background: var(--bg-card) !important;
  border: 1px solid rgba(255, 255, 255, 0.7) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
}

[data-theme="light"] .glass-card:hover {
  background: var(--bg-card-hover) !important;
  border-color: var(--border-color-hover) !important;
  box-shadow: var(--shadow-primary), var(--glow-primary) !important;
}

[data-theme="light"] .floating-card {
  background: rgba(255, 255, 255, 0.8) !important;
  border: 1px solid rgba(255, 255, 255, 0.9) !important;
  box-shadow: 0 10px 30px rgba(124, 58, 237, 0.06) !important;
}

[data-theme="light"] .btn-secondary {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(124, 58, 237, 0.15);
  color: #7c3aed;
}

[data-theme="light"] .btn-secondary:hover {
  background: #7c3aed;
  color: #ffffff;
  border-color: #7c3aed;
}

[data-theme="light"] .social-icon {
  background: rgba(255, 255, 255, 0.6);
  border-color: rgba(124, 58, 237, 0.1);
}

[data-theme="light"] .social-icon:hover {
  background: #7c3aed;
  border-color: #7c3aed;
  color: #ffffff;
}

[data-theme="light"] .hero-glow-1, [data-theme="light"] .hero-glow-2 {
  opacity: 0.25;
  filter: blur(140px);
}

/* --- RESET & BASIC STYLES --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  outline: none;
}

/* Keyboard focus-visible outline for accessibility */
*:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Scrollbar customization */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color-hover);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

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

ul {
  list-style: none;
}

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

input, textarea, button {
  font-family: var(--font-body);
  background: none;
  border: none;
}

/* Skip-to-content link for screen readers / keyboard users */
.skip-link {
  position: absolute;
  top: -999px;
  left: 0;
  background: var(--accent-primary);
  color: #fff;
  padding: 12px 20px;
  border-radius: 0 0 8px 0;
  font-weight: 700;
  z-index: 99999;
  text-decoration: none;
}
.skip-link:focus {
  top: 0;
}

/* --- REUSABLE UTILITIES & GLASSMORPHISM --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-normal), border-color var(--transition-normal), background var(--transition-normal), box-shadow var(--transition-normal);
}

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

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-primary {
  color: #ffffff;
  background: var(--accent-gradient);
  box-shadow: var(--glow-primary);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition-normal);
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.4);
  transform: scale(1.03);
}

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

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

.btn-secondary:hover {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  box-shadow: var(--glow-primary);
  transform: translateY(-2px);
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
  position: relative;
}

.section-title h2 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-title p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--accent-gradient);
  margin: 16px auto 0;
  border-radius: 10px;
}

/* Scroll Animation classes (Used by script.js) */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.js-enabled .reveal {
  opacity: 0;
  transform: translateY(30px);
}

.js-enabled .reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* --- HEADER & NAVIGATION --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  z-index: 1000;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
}

.header.scrolled {
  height: 70px;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.5px;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-primary);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s infinite;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
  font-size: 0.95rem;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: width var(--transition-normal);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Theme Switcher Button */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1.1rem;
}

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

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  padding: 4px;
}

.lang-btn {
  padding: 4px 12px;
  border-radius: 20px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
}

.lang-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: var(--glow-primary);
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-primary);
  cursor: pointer;
}

/* --- HERO SECTION --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--navbar-height) + 20px);
  position: relative;
  overflow: hidden;
}

/* Glow highlights in background */
.hero-glow-1, .hero-glow-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  pointer-events: none;
  z-index: -1;
}

.hero-glow-1 {
  background: var(--accent-primary);
  top: 10%;
  right: -5%;
}

.hero-glow-2 {
  background: var(--accent-secondary);
  bottom: 10%;
  left: -5%;
}

.hero-wrapper {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 40px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-subtitle {
  font-family: var(--font-heading);
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-typewriter-container {
  height: 45px;
  margin-bottom: 24px;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.typewriter-text {
  color: var(--text-primary);
  border-right: 2px solid var(--accent-secondary);
  padding-right: 4px;
  animation: blink 0.75s step-end infinite;
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Modern Dynamic Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.visual-backdrop {
  position: absolute;
  width: 320px;
  height: 320px;
  background: var(--accent-gradient);
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  filter: blur(40px);
  opacity: 0.2;
  animation: morphing 15s infinite alternate;
}

.visual-image-wrapper {
  width: 340px;
  height: 340px;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  border: 2px solid var(--border-color);
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  box-shadow: var(--shadow-primary);
  animation: morphing 10s infinite alternate;
}

/* We will place a highly stylized vector/code structure inside it or a glowing digital user icon */
.visual-code-art {
  font-family: monospace;
  color: var(--accent-secondary);
  font-size: 0.8rem;
  text-align: left;
  opacity: 0.15;
  position: absolute;
  top: 10%;
  left: 10%;
  right: 10%;
  bottom: 10%;
  pointer-events: none;
  white-space: pre-wrap;
  line-height: 1.3;
}

.visual-avatar {
  font-size: 7.5rem;
  filter: drop-shadow(0px 0px 20px rgba(139, 92, 246, 0.4));
  z-index: 2;
  transition: transform var(--transition-normal);
}

.visual-image-wrapper:hover .visual-avatar {
  transform: scale(1.1) rotate(5deg);
}

/* Floating stats cards near Hero image */
.floating-card {
  position: absolute;
  padding: 12px 18px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 3;
}

.floating-card-1 {
  top: 10%;
  left: -20px;
  animation: float-slow 4s ease-in-out infinite alternate;
}

.floating-card-2 {
  bottom: 10%;
  right: -20px;
  animation: float-slow 5s ease-in-out infinite alternate-reverse;
}

.floating-card i {
  font-size: 1.5rem;
  color: var(--accent-primary);
}

.floating-card .text {
  display: flex;
  flex-direction: column;
}

.floating-card .num {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
}

.floating-card .label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
}

/* --- STATS SECTION --- */
.stats {
  padding: 60px 0;
  position: relative;
  z-index: 10;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  padding: 30px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(var(--accent-primary-rgb), 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-primary);
  margin-bottom: 16px;
  transition: all var(--transition-fast);
}

.stat-item:hover .stat-icon {
  background: var(--accent-primary);
  color: #ffffff;
  transform: scale(1.1);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 4px;
  line-height: 1.1;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

/* --- ABOUT SECTION --- */
.about {
  padding: 100px 0;
}

.about-wrapper {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 50px;
  align-items: center;
}

.about-graphics {
  position: relative;
  display: flex;
  justify-content: center;
}

.about-experience-badge {
  position: absolute;
  bottom: -25px;
  right: -10px;
  padding: 12px 18px;
  border-radius: 12px;
  text-align: center;
  z-index: 3;
}

.about-experience-badge .years {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-secondary);
  line-height: 1.1;
  margin-bottom: 2px;
}

.about-experience-badge .text {
  font-size: 0.65rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.about-card {
  width: 100%;
  max-width: 380px;
  padding: 40px 30px;
  text-align: center;
}

.about-photo-wrapper {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  margin: 0 auto 24px;
  border: 3px solid var(--accent-primary);
  overflow: hidden;
  background: var(--bg-secondary);
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: var(--glow-primary);
}

.about-photo-placeholder {
  font-size: 4.5rem;
  color: var(--accent-primary);
}

.about-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.about-role {
  color: var(--accent-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.social-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-icon:hover {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  transform: translateY(-3px);
  box-shadow: var(--glow-primary);
}

.about-info {
  display: flex;
  flex-direction: column;
}

.about-bio {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 28px;
  line-height: 1.7;
}

.about-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 24px;
  margin-bottom: 36px;
}

.detail-item {
  display: flex;
  flex-direction: column;
}

.detail-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

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

/* --- SKILLS SECTION --- */
.skills {
  padding: 100px 0;
  background-color: var(--bg-secondary);
  position: relative;
}

.skills::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: var(--accent-primary);
  border-radius: 50%;
  filter: blur(150px);
  opacity: 0.05;
  top: 10%;
  left: 5%;
}

.skills-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
  align-items: flex-start;
}

.skills-intro h3 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.skills-intro p {
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.7;
}

.skills-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 28px;
}

.skills-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skills-card i {
  font-size: 2rem;
  color: var(--accent-primary);
}

.skills-card h4 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
}

.skills-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.skill-progress-bar {
  display: flex;
  flex-direction: column;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-weight: 600;
}

.skill-name {
  display: flex;
  align-items: center;
  gap: 8px;
}

.skill-name i {
  color: var(--accent-secondary);
}

.skill-track {
  height: 8px;
  background: var(--bg-primary);
  border-radius: 50px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.skill-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 50px;
  width: 0; /* Animated dynamically with JS */
  transition: width 1.5s cubic-bezier(0.1, 0.8, 0.3, 1);
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.4);
}

/* --- PROJECTS SECTION --- */
.projects {
  padding: 100px 0;
}

.projects-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  border-radius: 50px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  box-shadow: var(--glow-primary);
  transform: translateY(-2px);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
}

.project-img-wrapper {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  background-color: var(--bg-secondary);
}

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

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

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(8, 7, 16, 0.85);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

.project-link {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--accent-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.project-link:hover {
  transform: scale(1.1);
  background: var(--accent-secondary);
  box-shadow: var(--glow-secondary);
}

.project-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.tech-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  background: rgba(var(--accent-secondary-rgb), 0.1);
  color: var(--accent-secondary);
  border-radius: 4px;
}

.project-card:hover .tech-tag {
  background: rgba(var(--accent-primary-rgb), 0.1);
  color: var(--accent-primary);
}

.project-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  transition: color var(--transition-fast);
}

.project-card:hover .project-title {
  color: var(--accent-primary);
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* --- EXPERIENCE & EDUCATION --- */
.timeline-section {
  padding: 100px 0;
  background: var(--bg-secondary);
  position: relative;
}

.timeline-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.timeline-column h3 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 36px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.timeline-column h3 i {
  color: var(--accent-primary);
}

.timeline-list {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--border-color);
}

.timeline-item {
  position: relative;
  padding-bottom: 36px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -27px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 3px solid var(--accent-primary);
  box-shadow: var(--glow-primary);
  transition: all var(--transition-fast);
}

.timeline-item:hover .timeline-dot {
  background: var(--accent-secondary);
  border-color: var(--accent-secondary);
  box-shadow: var(--glow-secondary);
}

.timeline-card {
  padding: 24px;
  position: relative;
}

.timeline-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.timeline-date {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.timeline-org {
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 3px 8px;
  border-radius: 4px;
  color: var(--text-secondary);
}

.timeline-role {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.timeline-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* --- CONTACT SECTION --- */
.contact {
  padding: 100px 0;
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  width: 350px;
  height: 350px;
  background: var(--accent-secondary);
  border-radius: 50%;
  filter: blur(150px);
  opacity: 0.05;
  bottom: 5%;
  right: 5%;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 50px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-card {
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(var(--accent-primary-rgb), 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--accent-primary);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.contact-card:hover .contact-icon {
  background: var(--accent-primary);
  color: #ffffff;
}

.contact-details h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-details p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.contact-form-container {
  padding: 40px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  position: relative;
  width: 100%;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.15);
}

.form-label {
  position: absolute;
  left: 16px;
  top: 14px;
  color: var(--text-muted);
  pointer-events: none;
  transition: transform var(--transition-fast), font-size var(--transition-fast), color var(--transition-fast);
  font-size: 0.95rem;
}

/* Floating labels effect */
.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  transform: translateY(-24px) scale(0.85);
  left: 8px;
  color: var(--accent-primary);
  font-weight: 600;
  background-color: var(--bg-card);
  padding: 0 6px;
  border-radius: 4px;
}

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

.form-status {
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 0.9rem;
  display: none;
  font-weight: 600;
  animation: fadeIn var(--transition-normal);
}

.form-status.success {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
  display: block;
}

.form-status.error {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
  display: block;
}

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

/* --- FOOTER --- */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  background: var(--bg-primary);
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-emoji {
  display: inline-block;
  animation: typeBounce 2s infinite ease-in-out;
}

@keyframes typeBounce {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-4px) scale(1.05); }
}

/* --- ANIMATIONS & KEYFRAMES --- */
@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.7);
  }
  70% {
    transform: scale(1.1);
    box-shadow: 0 0 0 10px rgba(139, 92, 246, 0);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(139, 92, 246, 0);
  }
}

@keyframes blink {
  from, to { border-color: transparent }
  50% { border-color: var(--accent-secondary); }
}

@keyframes morphing {
  0% {
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  }
  25% {
    border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%;
  }
  50% {
    border-radius: 50% 50% 33% 67% / 55% 27% 73% 45%;
  }
  75% {
    border-radius: 33% 67% 58% 42% / 63% 68% 32% 37%;
  }
  100% {
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  }
}

@keyframes float-slow {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  100% {
    transform: translateY(-12px) rotate(2deg);
  }
}

@keyframes heartbeat {
  0% { transform: scale(1); }
  30% { transform: scale(1.2); }
  60% { transform: scale(1); }
  80% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.mobile-drawer-controls {
  display: none !important;
}

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 1024px) {
  html {
    font-size: 15px;
  }
  
  .nav-menu {
    gap: 16px;
  }
  
  .nav-container {
    padding: 0 16px;
  }
  
  .hero-title {
    font-size: 3.2rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-wrapper, .skills-wrapper, .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .about-graphics {
    order: 2;
  }
  
  .about-card {
    max-width: 100%;
  }
  
  .skills-intro {
    text-align: center;
  }
  
  .skills-cards {
    margin-top: 20px;
  }
  
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .timeline-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
    z-index: 1001;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(15, 14, 28, 0.8);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-left: 1px solid var(--border-color);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px 40px 40px;
    gap: 24px;
    transition: right var(--transition-normal);
    z-index: 999;
    box-shadow: var(--shadow-primary);
    display: flex;
  }
  
  .nav-menu.active {
    right: 0;
  }

  /* Display drawer controls inside mobile drawer */
  .mobile-drawer-controls {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-top: auto; /* Push to bottom of the drawer */
    width: 100%;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
  }

  .mobile-drawer-controls .lang-switcher {
    flex-grow: 1;
    justify-content: space-around;
  }

  .mobile-drawer-controls .theme-toggle {
    flex-shrink: 0;
  }

  /* Hide desktop header controls in mobile view to keep header clean */
  .nav-controls .lang-switcher,
  .nav-controls .theme-toggle {
    display: none;
  }
  
  .hero-wrapper {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 60px;
  }
  
  .hero-content {
    align-items: center;
  }
  
  .hero-title {
    font-size: 2.8rem;
  }
  
  .hero-typewriter-container {
    font-size: 1.4rem;
  }
  
  .hero-btns {
    justify-content: center;
  }
  
  .hero-visual {
    margin-top: 20px;
  }
  
  .floating-card-1 {
    left: 10px;
  }
  
  .floating-card-2 {
    right: 10px;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-form-container {
    padding: 30px 20px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.2rem;
  }
  
  .visual-image-wrapper {
    width: 270px !important;
    height: 270px !important;
  }
  
  .visual-backdrop {
    width: 250px !important;
    height: 250px !important;
  }
  
  .visual-avatar {
    font-size: 5.5rem !important;
  }
  
  .floating-card {
    padding: 8px 12px !important;
    gap: 8px !important;
  }
  
  .floating-card-1 {
    top: 5% !important;
    left: -10px !important;
  }
  
  .floating-card-2 {
    bottom: 5% !important;
    right: -10px !important;
  }
  
  .floating-card i {
    font-size: 1.2rem !important;
  }
  
  .floating-card .num {
    font-size: 0.95rem !important;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .about-details {
    grid-template-columns: 1fr;
  }
  
  .skills-cards {
    grid-template-columns: 1fr;
  }
  
  .timeline-meta {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* --- COMMENTS UI SYSTEM --- */

.comments-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(var(--accent-primary-rgb), 0.08);
  border: 1px solid rgba(var(--accent-primary-rgb), 0.15);
  color: var(--accent-primary);
  padding: 8px 16px;
  border-radius: 30px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  margin-top: 16px;
  transition: all var(--transition-fast);
  width: fit-content;
}

.comments-toggle-btn:hover {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: var(--glow-primary);
  transform: translateY(-2px);
}

.project-comments-area {
  margin-top: 20px;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
  display: none; /* Controlled by JS */
  flex-direction: column;
  gap: 16px;
  animation: fadeIn var(--transition-normal);
}

.comment-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 250px;
  overflow-y: auto;
  padding-right: 4px;
}

/* Custom scrollbar for comments list */
.comment-list::-webkit-scrollbar {
  width: 5px;
}
.comment-list::-webkit-scrollbar-track {
  background: transparent;
}
.comment-list::-webkit-scrollbar-thumb {
  background: var(--border-color-hover);
  border-radius: 10px;
}

.comment-bubble {
  background: rgba(var(--accent-primary-rgb), 0.03);
  border: 1px solid var(--border-color);
  padding: 12px 16px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: all var(--transition-fast);
}

.comment-bubble:hover {
  border-color: var(--border-color-hover);
  background: rgba(var(--accent-primary-rgb), 0.05);
}

.comment-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.comment-author {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.comment-date {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.comment-text {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.4;
  word-break: break-word;
}

.comment-form-compact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.comment-form-compact .form-row {
  display: flex;
  gap: 10px;
}

.comment-input-compact {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.8rem;
  transition: all var(--transition-fast);
}

.comment-input-compact:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 8px rgba(var(--accent-primary-rgb), 0.15);
}

textarea.comment-input-compact {
  min-height: 60px;
  resize: vertical;
}

.comment-submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--accent-gradient);
  color: #ffffff;
  padding: 8px 16px;
  border-radius: 8px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.comment-submit-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--glow-primary);
}

.comment-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.no-comments-msg {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 16px 0;
}

/* --- FUTURISTIC PRELOADER --- */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  z-index: 99999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.6s;
}

.preloader-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.preloader-logo {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  animation: pulseSlow 2s infinite;
}

.preloader-spinner-wrapper {
  position: relative;
  width: 80px;
  height: 80px;
}

.preloader-spinner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 3px solid rgba(var(--accent-primary-rgb), 0.08);
  border-top-color: var(--accent-primary);
  border-right-color: var(--accent-secondary);
  animation: spin 1.2s cubic-bezier(0.5, 0.1, 0.4, 0.9) infinite;
}

.preloader-spinner-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(var(--accent-primary-rgb), 0.25);
  animation: pulseSlow 1.5s infinite alternate;
  pointer-events: none;
}

.preloader-text {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-secondary);
}

@keyframes pulseSlow {
  0% { transform: scale(0.98); opacity: 0.8; }
  100% { transform: scale(1.02); opacity: 1; }
}

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

/* Hide scrollbar during preloader */
body.loading {
  overflow: hidden !important;
}