/* ==========================================================================
   Base Design Tokens & CSS Custom Properties
   ========================================================================== */

:root {
  /* Color Palette - Dark Theme Default */
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-card: rgba(22, 30, 46, 0.7);
  --bg-card-hover: rgba(30, 41, 64, 0.85);
  --bg-glass: rgba(17, 24, 39, 0.65);
  
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-secondary: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --accent-gradient-glow: linear-gradient(135deg, rgba(99, 102, 241, 0.25) 0%, rgba(6, 182, 212, 0.25) 100%);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(99, 102, 241, 0.4);
  
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  
  /* Typography */
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Radii & Elevations */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 35px rgba(99, 102, 241, 0.25);
  
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-tertiary: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-glass: rgba(255, 255, 255, 0.8);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(99, 102, 241, 0.5);
  
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.18);
}

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

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
}

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

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  outline: none;
}

button {
  cursor: pointer;
}

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

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ==========================================================================
   Typography & Shared Utilities
   ========================================================================== */

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

.highlight {
  color: var(--text-primary);
  font-weight: 700;
}

.section {
  padding: 6.5rem 0;
  position: relative;
}

.bg-subtle {
  background-color: var(--bg-secondary);
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-header.flex-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-primary);
  display: inline-block;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.section-lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin-top: 1rem;
}

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

/* ==========================================================================
   Buttons & Interactive Elements
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

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

.btn-outline:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.08);
}

.btn-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-glass);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: scale(1.05);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-symbol {
  font-family: var(--font-mono);
  color: var(--accent-primary);
  font-weight: 700;
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
}

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

/* Theme Switcher Sun/Moon */
#theme-toggle svg {
  width: 20px;
  height: 20px;
}

[data-theme="dark"] .sun-icon {
  display: block;
}
[data-theme="dark"] .moon-icon {
  display: none;
}

[data-theme="light"] .sun-icon {
  display: none;
}
[data-theme="light"] .moon-icon {
  display: block;
}

/* Hamburger toggle for mobile */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
}

.hamburger-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-toggle.active .hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.mobile-toggle.active .hamburger-bar:nth-child(2) {
  opacity: 0;
}
.mobile-toggle.active .hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

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

.hero-section {
  padding: 6rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -150px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.18) 0%, rgba(6, 182, 212, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  align-items: center;
  gap: 3.5rem;
  position: relative;
  z-index: 1;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 580px;
  margin-bottom: 2rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.social-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  background: var(--bg-card);
  transition: all var(--transition-fast);
}

.social-icon svg {
  width: 18px;
  height: 18px;
}

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

.copy-email-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.copy-email-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* Hero Profile Card */
.hero-visual {
  position: relative;
}

.profile-card {
  padding: 2.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.card-glow {
  position: absolute;
  top: -50px;
  right: -50px;
  width: 180px;
  height: 180px;
  background: var(--accent-gradient-glow);
  filter: blur(40px);
  border-radius: 50%;
  pointer-events: none;
}

.avatar-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.75rem;
}

.avatar-placeholder {
  width: 88px;
  height: 88px;
  border-radius: 22px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 800;
  font-size: 2rem;
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
}

.badge-exp {
  text-align: right;
  border-left: 2px solid var(--accent-primary);
  padding-left: 0.85rem;
}

.badge-number {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-primary);
  display: block;
  line-height: 1;
}

.badge-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.card-name {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.2rem;
}

.card-role {
  font-size: 0.95rem;
  color: var(--accent-primary);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.metric-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}

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

.metric-val {
  display: block;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.metric-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.metric-divider {
  width: 1px;
  height: 32px;
  background: var(--border-color);
}

.current-focus {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

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

.focus-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--accent-gradient-glow);
  color: var(--accent-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.about-narrative p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.core-principles {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.principle-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.principle-icon {
  font-size: 1.5rem;
  background: var(--bg-tertiary);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.principle-item h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.principle-item p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.about-side-cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stat-card {
  padding: 2rem;
}

.stat-number {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.stat-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.stat-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.highlight-box {
  border-left: 4px solid var(--accent-primary);
}

.highlight-box h4 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.highlight-box p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

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

.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 6px;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}

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

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 1.25rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-primary);
  box-shadow: 0 0 0 5px var(--bg-primary);
  border: 2px solid #ffffff;
}

.timeline-content {
  padding: 1.85rem;
  border-radius: var(--radius-md);
}

.timeline-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

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

.company-name {
  font-size: 0.95rem;
  color: var(--accent-primary);
  font-weight: 600;
  display: block;
}

.timeline-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.3rem 0.75rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.timeline-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

/* ==========================================================================
   Projects Section
   ========================================================================== */

.filter-controls {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  background: var(--bg-card);
  transition: all var(--transition-fast);
}

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

.filter-btn.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base), opacity var(--transition-fast);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-lg);
}

.project-card.hidden {
  display: none;
}

.project-preview {
  height: 190px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.preview-grad-1 { background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%); }
.preview-grad-2 { background: linear-gradient(135deg, #111827 0%, #1f2937 100%); }
.preview-grad-3 { background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%); }
.preview-grad-4 { background: linear-gradient(135deg, #064e3b 0%, #065f46 100%); }

.preview-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.preview-mockup {
  width: 70%;
  height: 70px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed rgba(255, 255, 255, 0.2);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1rem;
  gap: 8px;
}

.mockup-bar {
  height: 8px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  width: 100%;
}

.mockup-bar.short {
  width: 60%;
}

.code-snippet {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-secondary);
}

.project-info {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
}

.project-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
}

.project-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 1.1rem;
}

.link-btn {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.link-btn:hover {
  text-decoration: underline;
}

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

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
}

.skill-category-card {
  padding: 2rem;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.cat-icon {
  font-size: 1.5rem;
}

.cat-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.skill-pill {
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

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

/* ==========================================================================
   Contact Section & Form
   ========================================================================== */

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 3rem;
  align-items: start;
}

.contact-card {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.contact-icon {
  font-size: 1.5rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

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

.contact-val {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-val:hover {
  color: var(--accent-primary);
}

.direct-copy-box {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.direct-copy-box p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.85rem;
}

.w-full {
  width: 100%;
}

.contact-form {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.form-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

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

.form-input {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.1rem;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

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

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

.footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
  background: var(--bg-secondary);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-left p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.footer-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: all var(--transition-fast);
}

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

.arrow-up-icon {
  width: 16px;
  height: 16px;
}

/* ==========================================================================
   HTML5 <dialog> Modal Styles
   ========================================================================== */

.project-modal {
  margin: auto;
  border: none;
  background: transparent;
  padding: 1.5rem;
  max-width: 650px;
  width: 90%;
  outline: none;
}

.project-modal::backdrop {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-box {
  position: relative;
  padding: 2.5rem;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-close-btn {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  font-size: 1.75rem;
  line-height: 1;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.modal-header-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-primary);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  display: block;
}

.modal-title {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.modal-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.modal-highlights {
  margin-bottom: 2rem;
}

.modal-highlights h4 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.modal-highlights ul {
  padding-left: 1.25rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.modal-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

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

.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--accent-primary);
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-weight: 600;
  font-size: 0.95rem;
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ==========================================================================
   Nap Station & Timer Component
   ========================================================================== */

.nap-station-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.nap-presets-container {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}

.nap-presets-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.nap-panel-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.nap-badge-sub {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--accent-secondary);
  background: var(--bg-tertiary);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
}

.nap-preset-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.nap-preset-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.15rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-base);
  width: 100%;
}

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

.nap-preset-card.active {
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.22);
}

.preset-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 62px;
  padding: 0.35rem 0.5rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.preset-icon {
  font-size: 1.35rem;
  line-height: 1.2;
}

.preset-duration {
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent-secondary);
}

.preset-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.preset-info p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.nap-preset-card.demo-preset {
  border-style: dashed;
}

.custom-duration-wrapper {
  margin-top: 1.25rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--border-color);
}

.custom-duration-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.65rem;
}

.custom-nap-val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent-primary);
}

.nap-slider {
  width: 100%;
  accent-color: var(--accent-primary);
  height: 6px;
  border-radius: 3px;
  background: var(--bg-tertiary);
  cursor: pointer;
  outline: none;
}

.nap-timer-display-card {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.timer-top-status {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.nap-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.ambient-sound-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.ambient-sound-btn:hover {
  border-color: var(--accent-secondary);
  color: var(--text-primary);
}

.ambient-sound-btn.active {
  border-color: var(--accent-secondary);
  color: var(--text-primary);
  background: rgba(6, 182, 212, 0.15);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.25);
}

.timer-dial-container {
  position: relative;
  width: 260px;
  height: 260px;
  margin: 0.5rem auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timer-dial-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.timer-dial-bg {
  fill: none;
  stroke: var(--bg-tertiary);
  stroke-width: 12;
}

.timer-dial-progress {
  fill: none;
  stroke: url(#napGradient);
  stroke-width: 12;
  stroke-linecap: round;
  stroke-dasharray: 691.15;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.85s linear;
}

.timer-dial-content {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.timer-emoji {
  font-size: 2.5rem;
  line-height: 1;
  margin-bottom: 0.25rem;
  transition: transform var(--transition-base);
}

.timer-dial-container.sleeping .timer-emoji {
  animation: gentleBreathe 3s ease-in-out infinite;
}

@keyframes gentleBreathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

.timer-clock {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.1;
}

.timer-subtext {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 0.25rem;
}

.timer-completed-overlay {
  position: absolute;
  inset: 0;
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transform: scale(0.85);
  transition: all var(--transition-smooth);
  z-index: 10;
  border: 2px solid var(--accent-secondary);
}

.timer-completed-overlay.show {
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
}

.completed-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.35rem;
}

.completed-emoji {
  font-size: 2rem;
  animation: gentleBounce 1.5s infinite ease-in-out;
}

@keyframes gentleBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.completed-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.completed-desc {
  font-size: 0.76rem;
  color: var(--text-secondary);
  max-width: 190px;
  line-height: 1.3;
}

.completed-actions {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  width: 100%;
  margin-top: 0.4rem;
}

.snooze-tally {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--accent-secondary);
  margin-top: 0.25rem;
}

.timer-controls {
  display: flex;
  gap: 1rem;
  justify-content: center;
  width: 100%;
  margin-bottom: 1.25rem;
}

.nap-live-quote {
  font-style: italic;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 0.75rem 1rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  width: 100%;
  line-height: 1.4;
}

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

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
  }

  .nap-station-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 4.5rem 0;
  }

  .hide-mobile {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    transition: transform var(--transition-base);
    z-index: 99;
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .timeline {
    padding-left: 1.5rem;
  }

  .timeline-dot {
    left: -1.5rem;
  }

  .toast {
    left: 1.5rem;
    right: 1.5rem;
    bottom: 1.5rem;
    text-align: center;
  }
}