/* ===================================================================
   ARAVIND SURESH — PERSONAL PORTFOLIO
   Custom Theme Engine & Glassmorphism Design System
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* --- Root Variables: Midnight Theme (Default) --- */
:root {
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Midnight Palette */
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-card: rgba(18, 26, 46, 0.65);
  --bg-card-hover: rgba(28, 39, 68, 0.85);
  --bg-card-active: rgba(35, 48, 82, 0.95);
  --bg-glass: rgba(15, 23, 42, 0.75);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(99, 102, 241, 0.45);
  --border-glass: rgba(255, 255, 255, 0.12);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-primary: #6366f1;
  --accent-secondary: #a855f7;
  --accent-cyan: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --accent-subtle: rgba(99, 102, 241, 0.12);
  --glow-color: rgba(99, 102, 241, 0.25);
  
  --badge-bg: rgba(99, 102, 241, 0.14);
  --badge-text: #a5b4fc;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.2);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --nav-height: 72px;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Theme 2: Cyberpunk / Neon --- */
[data-theme="cyber"] {
  --bg-primary: #060911;
  --bg-secondary: #0b1120;
  --bg-card: rgba(14, 23, 40, 0.7);
  --bg-card-hover: rgba(20, 32, 57, 0.9);
  --bg-card-active: rgba(25, 41, 74, 0.95);
  --bg-glass: rgba(10, 17, 30, 0.85);
  --border-color: rgba(0, 245, 212, 0.12);
  --border-hover: rgba(0, 245, 212, 0.55);
  --border-glass: rgba(0, 245, 212, 0.2);

  --text-primary: #f0fdf4;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-primary: #00f5d4;
  --accent-secondary: #f72585;
  --accent-cyan: #7209b7;
  --accent-gradient: linear-gradient(135deg, #00f5d4 0%, #7209b7 60%, #f72585 100%);
  --accent-subtle: rgba(0, 245, 212, 0.12);
  --glow-color: rgba(0, 245, 212, 0.3);

  --badge-bg: rgba(0, 245, 212, 0.12);
  --badge-text: #2dd4bf;

  --shadow-glow: 0 0 32px rgba(0, 245, 212, 0.22);
}

/* --- Theme 3: Nord Frost --- */
[data-theme="nord"] {
  --bg-primary: #242933;
  --bg-secondary: #2e3440;
  --bg-card: rgba(46, 52, 64, 0.72);
  --bg-card-hover: rgba(59, 66, 82, 0.9);
  --bg-card-active: rgba(67, 76, 94, 0.95);
  --bg-glass: rgba(46, 52, 64, 0.85);
  --border-color: rgba(216, 222, 233, 0.1);
  --border-hover: rgba(136, 192, 208, 0.55);
  --border-glass: rgba(216, 222, 233, 0.18);

  --text-primary: #eceff4;
  --text-secondary: #d8dee9;
  --text-muted: #8892b0;

  --accent-primary: #88c0d0;
  --accent-secondary: #81a1c1;
  --accent-cyan: #8fbcbb;
  --accent-gradient: linear-gradient(135deg, #88c0d0 0%, #81a1c1 60%, #b48ead 100%);
  --accent-subtle: rgba(136, 192, 208, 0.14);
  --glow-color: rgba(136, 192, 208, 0.25);

  --badge-bg: rgba(136, 192, 208, 0.15);
  --badge-text: #88c0d0;

  --shadow-glow: 0 0 30px rgba(136, 192, 208, 0.2);
}

/* --- Theme 4: Minimal Light --- */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: #ffffff;
  --bg-card-active: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --border-color: rgba(226, 232, 240, 0.9);
  --border-hover: rgba(79, 70, 229, 0.45);
  --border-glass: rgba(226, 232, 240, 0.8);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --accent-primary: #4f46e5;
  --accent-secondary: #7c3aed;
  --accent-cyan: #0284c7;
  --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 60%, #db2777 100%);
  --accent-subtle: rgba(79, 70, 229, 0.08);
  --glow-color: rgba(79, 70, 229, 0.15);

  --badge-bg: rgba(79, 70, 229, 0.08);
  --badge-text: #4f46e5;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 25px rgba(79, 70, 229, 0.12);
}

/* --- Base & Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 20px);
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color 0.4s ease, color 0.3s ease;
  min-height: 100vh;
  position: relative;
}

/* Background Ambient Orbs */
.ambient-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.15;
  transition: all 0.6s ease;
}

.ambient-orb-1 {
  width: 500px;
  height: 500px;
  top: -100px;
  left: -100px;
  background: var(--accent-primary);
}

.ambient-orb-2 {
  width: 450px;
  height: 450px;
  top: 35%;
  right: -150px;
  background: var(--accent-secondary);
}

.ambient-orb-3 {
  width: 550px;
  height: 550px;
  bottom: 5%;
  left: 20%;
  background: var(--accent-cyan);
}

/* Subtle Grid Texture */
.ambient-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, var(--border-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-color) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 75%);
  opacity: 0.4;
}

/* --- Container & Layout --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

section {
  padding: 100px 0;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
}

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

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

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--border-hover);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* --- Navigation Bar --- */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  transition: var(--transition);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-badge {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  box-shadow: 0 4px 12px var(--glow-color);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

.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);
  border-radius: 2px;
  transition: width 0.3s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Theme Dropdown / Selector */
.theme-picker-wrapper {
  position: relative;
}

.theme-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

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

.theme-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 190px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 4px;
  z-index: 102;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.theme-dropdown.show {
  display: flex;
  animation: fadeInDown 0.2s ease-out forwards;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.theme-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: var(--transition);
}

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

.theme-option.active {
  background: var(--accent-subtle);
  color: var(--accent-primary);
  font-weight: 600;
}

.theme-color-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.dot-midnight { background: #6366f1; }
.dot-cyber { background: #00f5d4; }
.dot-nord { background: #88c0d0; }
.dot-light { background: #f8fafc; border: 1px solid #cbd5e1; }

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 6px;
}

/* --- Hero Section --- */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) + 40px);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  width: fit-content;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  position: relative;
}

.status-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: #10b981;
  opacity: 0.5;
  animation: pulseDot 2s infinite ease-out;
}

@keyframes pulseDot {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(2.4); opacity: 0; }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 560px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--glow-color);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--glow-color);
  color: #ffffff;
}

.btn-secondary {
  background: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.btn-icon:hover {
  color: var(--accent-primary);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 6px;
}

.hero-socials span {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Glassmorphic Interactive Terminal / Tech Window */
.terminal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  overflow: hidden;
  transition: var(--transition);
}

.terminal-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.terminal-header {
  background: rgba(0, 0, 0, 0.2);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.terminal-dots {
  display: flex;
  gap: 7px;
}

.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.terminal-body {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
}

.terminal-line {
  margin-bottom: 8px;
}

.terminal-prompt {
  color: var(--accent-primary);
  margin-right: 8px;
}

.terminal-cmd {
  color: var(--text-primary);
}

.terminal-output {
  color: var(--text-secondary);
  padding-left: 18px;
  margin-bottom: 14px;
}

.terminal-key {
  color: var(--accent-secondary);
}

.terminal-val {
  color: var(--accent-cyan);
}

.cursor-blink {
  display: inline-block;
  width: 8px;
  height: 15px;
  background: var(--accent-primary);
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

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

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
  font-size: 1.05rem;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.feature-card {
  display: flex;
  gap: 20px;
  padding: 22px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
}

.feature-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateX(6px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--badge-bg);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.feature-info h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.feature-info p {
  font-size: 0.92rem;
  line-height: 1.5;
}

/* Stats Counter Row */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 60px;
  padding: 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  font-family: var(--font-mono);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 6px;
}

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

/* --- Projects Section --- */
.project-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.filter-btn.active {
  background: var(--accent-gradient);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--glow-color);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 30px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.project-preview {
  height: 200px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-banner-decor {
  font-family: var(--font-mono);
  font-size: 3.5rem;
  font-weight: 800;
  opacity: 0.15;
  color: var(--text-primary);
  user-select: none;
}

.project-badge-top {
  position: absolute;
  top: 16px;
  left: 16px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--accent-primary);
  backdrop-filter: blur(8px);
}

.project-body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.project-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.project-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.project-links {
  display: flex;
  align-items: center;
  gap: 16px;
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
}

.project-link-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.project-link-item:hover {
  color: var(--accent-primary);
}

/* --- Experience & Education Section --- */
.timeline-container {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 36px;
}

.timeline-container::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 11px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

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

.timeline-dot {
  position: absolute;
  left: -36px;
  top: 6px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-primary);
  box-shadow: 0 0 12px var(--glow-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: var(--transition);
}

.timeline-card:hover {
  border-color: var(--border-hover);
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
}

.timeline-header-wrap {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 10px;
}

.timeline-role {
  font-size: 1.25rem;
  font-weight: 700;
}

.timeline-company {
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 1rem;
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--border-color);
}

.timeline-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 14px;
}

.timeline-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline-bullets li {
  font-size: 0.92rem;
  color: var(--text-secondary);
  position: relative;
  padding-left: 20px;
}

.timeline-bullets li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
}

/* --- Skills Section --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 26px;
}

.skill-category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: var(--transition);
}

.skill-category-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}

.skill-cat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--badge-bg);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.skill-category-header h3 {
  font-size: 1.15rem;
}

.skills-pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
}

.skill-pill:hover {
  background: var(--accent-subtle);
  border-color: var(--border-hover);
  color: var(--accent-primary);
  transform: translateY(-2px);
}

.skill-pill i {
  color: var(--accent-primary);
  font-size: 1rem;
}

/* --- Contact Section --- */
.contact-card-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 50px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

.contact-left h3 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.contact-left p {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 30px;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.contact-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--badge-bg);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

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

.contact-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--glow-color);
}

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

/* Copy Email Toast */
.toast-msg {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
  box-shadow: var(--shadow-lg);
  padding: 14px 22px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.toast-msg.show {
  transform: translateY(0);
  opacity: 1;
}

/* --- Footer --- */
footer {
  border-top: 1px solid var(--border-color);
  padding: 50px 0 30px;
  background: var(--bg-secondary);
  position: relative;
  z-index: 1;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 30px;
}

.footer-social-links {
  display: flex;
  gap: 14px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-weight: 600;
}

.back-to-top:hover {
  color: var(--accent-primary);
}

/* --- Responsive Media Queries --- */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .contact-card-box {
    grid-template-columns: 1fr;
    padding: 30px;
  }

  .stats-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-glass);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    transform: translateY(-150%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.mobile-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-menu-btn {
    display: block;
  }

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

  .stats-strip {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 20px;
  }

  .hero-cta-group {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .footer-top, .footer-bottom {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}