/* ============================================
   Asish Kumar Nayak - Senior Data Engineer
   Professional Portfolio (Light Theme)
   ============================================ */

:root {
  /* Color System */
  --color-primary: #4f46e5;
  --color-primary-light: #4f46e5;
  --color-primary-dark: #4338ca;
  --color-secondary: #0891b2;
  --color-accent: #d97706;
  --color-bg: #f8fafc;
  --color-bg-alt: #eef2f7;
  --color-surface: rgba(15, 23, 42, 0.04);
  --color-surface-hover: rgba(15, 23, 42, 0.07);
  --color-border: rgba(15, 23, 42, 0.1);
  --color-border-hover: rgba(15, 23, 42, 0.18);
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-text-dim: #64748b;
  --color-success: #059669;
  --color-error: #dc2626;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;

  /* Layout */
  --container-max: 1200px;
  --nav-height: 72px;
  --section-padding: 96px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Effects */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, 0.14);
  --shadow-glow: 0 0 40px rgba(79, 70, 229, 0.25);
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  --gradient-text: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);

  /* Motion */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Z-index scale */
  --z-cursor: 9999;
  --z-toast: 1000;
  --z-nav: 900;
}

/* ============================================
   Reset & Base
   ============================================ */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg {
  display: inline-block;
  vertical-align: middle;
}

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

a:hover {
  color: var(--color-secondary);
}

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

input,
textarea {
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: transparent;
  border: none;
  outline: none;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-text);
}

/* Cursor glow */
.cursor-glow {
  position: fixed;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.07) 0%, transparent 60%);
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
  opacity: 0;
}

.cursor-glow.visible {
  opacity: 1;
}

/* Selection */
::selection {
  background: var(--color-primary);
  color: white;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* ============================================
   Utility Classes
   ============================================ */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section-header.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -8px;
  transform: translateX(-50%);
  width: 56px;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 16px auto 0;
}

/* ============================================
   Navigation
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-normal);
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.97);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: var(--container-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

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

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

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

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

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

.nav-link.nav-cta {
  background: var(--gradient-primary);
  color: white;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: all var(--transition-normal);
}

.nav-link.nav-cta::after {
  display: none;
}

.nav-link.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
}

.hamburger::before {
  transform: translateY(-7px);
}

.hamburger::after {
  transform: translateY(5px);
}

.nav-toggle.open .hamburger {
  background: transparent;
}

.nav-toggle.open .hamburger::before {
  transform: rotate(45deg);
}

.nav-toggle.open .hamburger::after {
  transform: rotate(-45deg);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: calc(var(--nav-height) + 48px) 0 48px;
}

.hero-background {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: float 12s ease-in-out infinite;
}

.orb-1 {
  width: 500px;
  height: 500px;
  top: -200px;
  right: -150px;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.35) 0%, transparent 70%);
}

.orb-2 {
  width: 400px;
  height: 400px;
  bottom: -150px;
  left: -100px;
  background: radial-gradient(circle, rgba(8, 145, 178, 0.3) 0%, transparent 70%);
  animation-delay: -4s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  top: 40%;
  left: 50%;
  background: radial-gradient(circle, rgba(217, 119, 6, 0.18) 0%, transparent 70%);
  animation-delay: -8s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -20px) scale(1.05);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.95);
  }
}

.particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.45;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
  width: 100%;
}

.hero-text {
  opacity: 0;
  transform: translateY(32px);
  animation: fadeUp 0.8s ease forwards;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(5, 150, 105, 0.1);
  border: 1px solid rgba(5, 150, 105, 0.3);
  color: var(--color-success);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(5, 150, 105, 0.4);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(5, 150, 105, 0);
  }
}

.hero-greeting {
  display: block;
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.hero-name {
  display: block;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 12px;
}

.hero-role {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
}

.hero-tagline {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--color-text-muted);
  max-width: 540px;
  margin-bottom: 32px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 36px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.meta-icon {
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
  background: #ffffff;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

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

.btn-ghost {
  color: var(--color-text-muted);
}

.btn-ghost:hover {
  color: var(--color-text);
}

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

.btn .btn-loading {
  display: none;
  align-items: center;
  gap: 8px;
}

.btn.loading .btn-text {
  display: none;
}

.btn.loading .btn-loading {
  display: inline-flex;
}

.spinner {
  animation: spin 0.8s linear infinite;
}

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

/* Hero Stats */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 640px;
}

.stat {
  padding: 20px 16px;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.stat:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
}

.stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Hero Code Window */
.hero-visual {
  position: relative;
  opacity: 0;
  transform: translateX(32px);
  animation: fadeInRight 0.8s ease 0.2s forwards;
}

@keyframes fadeInRight {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.code-window {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: perspective(1000px) rotateY(-8deg) rotateX(4deg);
  transition: transform var(--transition-normal);
  position: relative;
}

.code-window::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.04) 0%, transparent 50%, rgba(8, 145, 178, 0.04) 100%);
  pointer-events: none;
}

.code-window:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.window-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(15, 23, 42, 0.04);
  border-bottom: 1px solid var(--color-border);
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.window-dots span:nth-child(1) {
  background: #f87171;
}

.window-dots span:nth-child(2) {
  background: #fbbf24;
}

.window-dots span:nth-child(3) {
  background: #34d399;
}

.window-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.code-content {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  overflow-x: auto;
  color: #1e293b;
}

.code-content .keyword {
  color: #7c3aed;
}

.code-content .function {
  color: #b45309;
}

.code-content .function-name {
  color: #2563eb;
}

.code-content .string {
  color: #059669;
}

.code-content .comment {
  color: #94a3b8;
  font-style: italic;
}

/* Hero scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-text-dim);
  animation: bounce 2s ease-in-out infinite;
}

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

/* ============================================
   Snapshot Band (recruiter scan)
   ============================================ */

.snapshot {
  background: var(--gradient-primary);
  padding: 28px 0;
  position: relative;
  z-index: 1;
}

.snapshot-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 18px;
}

.snapshot-item {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
  padding: 14px 10px;
  text-align: center;
  backdrop-filter: blur(4px);
  transition: all var(--transition-normal);
}

.snapshot-item:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.snapshot-value {
  display: block;
  font-size: 1.7rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.1;
}

.snapshot-label {
  display: block;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.9);
  margin-top: 2px;
}

.achievement-strip {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.strip-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-right: 6px;
}

.achievement-chip {
  background: #ffffff;
  border-radius: var(--radius-full);
  padding: 7px 16px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  box-shadow: var(--shadow-sm);
}

.achievement-chip strong {
  color: var(--color-primary);
  font-weight: 700;
}

@media (max-width: 768px) {
  .snapshot-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .snapshot-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   About Section
   ============================================ */

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: start;
}

.about-content {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.about-content.visible {
  opacity: 1;
  transform: translateY(0);
}

.about-text {
  color: var(--color-text-muted);
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.about-text.lead {
  font-size: 1.2rem;
  color: var(--color-text);
}

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

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}

.highlight {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.highlight:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-hover);
  transform: translateY(-2px);
}

.highlight-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.highlight strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.highlight span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.about-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease 0.15s, transform 0.6s ease 0.15s;
}

.about-sidebar.visible {
  opacity: 1;
  transform: translateY(0);
}

.profile-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.profile-avatar {
  width: 96px;
  height: 96px;
  margin: 0 auto 16px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: white;
  box-shadow: var(--shadow-glow);
}

.profile-card h3 {
  font-size: 1.25rem;
  margin-bottom: 4px;
}

.profile-title {
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 8px;
}

.profile-location {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.profile-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}

.profile-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  transition: all var(--transition-fast);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.profile-link:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
  border-color: var(--color-primary);
}

.tech-stack-preview {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.tech-stack-preview h4 {
  font-size: 1rem;
  margin-bottom: 16px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  padding: 6px 12px;
  border-radius: var(--radius-full);
  background: rgba(79, 70, 229, 0.08);
  border: 1px solid rgba(79, 70, 229, 0.25);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 500;
  font-family: var(--font-mono);
}

/* ============================================
   Experience / Timeline
   ============================================ */

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--color-primary), var(--color-secondary), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

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

.timeline-item:nth-child(odd) .timeline-card {
  margin-right: calc(50% + 32px);
}

.timeline-item:nth-child(even) .timeline-card {
  margin-left: calc(50% + 32px);
}

.timeline-dot {
  position: absolute;
  top: 32px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gradient-primary);
  border: 3px solid var(--color-bg-alt);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.2);
  z-index: 1;
}

.timeline-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 26px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.timeline-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.timeline-period {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-secondary);
  background: rgba(8, 145, 178, 0.08);
  border: 1px solid rgba(8, 145, 178, 0.25);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

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

.timeline-company h3 {
  font-size: 1.2rem;
}

.timeline-company .company {
  color: var(--color-primary);
  font-weight: 500;
}

.timeline-location {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-bottom: 16px;
}

.timeline-bullets {
  list-style: none;
  padding: 0;
}

.timeline-bullets li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

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

.timeline-bullets li strong {
  color: var(--color-text);
}

.timeline-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

/* ============================================
   Skills Section
   ============================================ */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.skill-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.skill-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.skill-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.skill-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.skill-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(79, 70, 229, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.skill-card h3 {
  font-size: 1.05rem;
}

.skill-subtitle {
  font-size: 0.82rem;
  color: var(--color-text-dim);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ============================================
   Education Section
   ============================================ */

.education-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 1000px;
  margin: 0 auto;
}

.education-card {
  display: flex;
  gap: 20px;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.education-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.education-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.education-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.education-content h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.education-school {
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 4px;
}

.education-period {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-secondary);
  margin-bottom: 12px;
}

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

/* ============================================
   Certifications Section
   ============================================ */

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.certification-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.certification-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.certification-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.certification-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.certification-name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  min-height: 44px;
}

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

/* ============================================
   Contact Section
   ============================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-info h3 {
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.contact-info > p {
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

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

.contact-method {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: #ffffff;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.contact-method:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-hover);
  transform: translateX(4px);
  color: var(--color-text);
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(79, 70, 229, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-method strong {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.contact-method span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Contact Form */
.contact-form {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.required {
  color: var(--color-error);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
  background: #ffffff;
}

.form-group input.invalid,
.form-group textarea.invalid {
  border-color: var(--color-error);
}

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

.form-note {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  min-height: 24px;
}

/* ============================================
   Toast Notification
   ============================================ */

.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: var(--z-toast);
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
}

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

.toast-content {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toast-icon {
  display: none;
}

.toast.success .toast-icon.success {
  display: block;
  color: var(--color-success);
}

.toast.error .toast-icon.error {
  display: block;
  color: var(--color-error);
}

.toast-message {
  font-size: 0.95rem;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
}

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

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

.footer-links {
  display: flex;
  gap: 16px;
}

.footer-links a {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: #ffffff;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--transition-normal);
}

.footer-links a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* ============================================
   Reveal Animations
   ============================================ */

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-visual {
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
  }

  .code-window {
    transform: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .profile-card,
  .tech-stack-preview {
    flex: 1;
    min-width: 280px;
  }

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

@media (max-width: 768px) {
  :root {
    --section-padding: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    padding: 16px 24px 24px;
    transform: translateY(-16px);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
    border-bottom: 1px solid var(--color-border);
  }

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

  .nav-links li {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-link.nav-cta {
    border: none;
    margin-top: 16px;
    text-align: center;
  }

  .hero {
    padding-top: calc(var(--nav-height) + 32px);
  }

  .hero-meta {
    flex-direction: column;
    gap: 12px;
  }

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

  .hero-actions {
    flex-direction: column;
  }

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

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

  .timeline::before {
    left: 8px;
  }

  .timeline-item:nth-child(odd) .timeline-card,
  .timeline-item:nth-child(even) .timeline-card {
    margin: 0 0 0 40px;
  }

  .timeline-dot {
    left: 8px;
    transform: translateX(-50%);
  }

  .timeline-card {
    padding: 20px;
  }

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

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

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }

  .stat-value {
    font-size: 1.6rem;
  }

  .timeline-item:nth-child(odd) .timeline-card,
  .timeline-item:nth-child(even) .timeline-card {
    margin-left: 32px;
  }

  .code-content {
    font-size: 0.7rem;
    padding: 16px;
  }
}

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

  html {
    scroll-behavior: auto;
  }

  .cursor-glow {
    display: none;
  }
}