/* ==========================================================================
   SUNIL DUTT PORTFOLIO - MAIN STYLESHEET (Pure CSS3)
   Built with CSS Custom Properties, Flexbox, CSS Grid & Media Queries
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Root Variables & Theme Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette - Light Mode */
  --bg-primary: #f8fafc;
  --bg-alt: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-header: rgba(248, 250, 252, 0.85);

  --text-main: #0f172a;
  --text-muted: #334155;
  --text-subtle: #64748b;

  --border-color: #e2e8f0;
  --border-subtle: #cbd5e1;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-border: #bfdbfe;

  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-purple: #8b5cf6;
  --accent-red: #ef4444;

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.12), 0 8px 10px -6px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.25);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark Theme Variables Override */
html.dark {
  --bg-primary: #070b14;
  --bg-alt: #0e1526;
  --bg-card: #131d33;
  --bg-card-hover: #1a2744;
  --bg-header: rgba(7, 11, 20, 0.85);

  --text-main: #f8fafc;
  --text-muted: #cbd5e1;
  --text-subtle: #94a3b8;

  --border-color: #1e2d4a;
  --border-subtle: #334668;

  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-light: #132347;
  --primary-border: #1d3973;

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 25px rgba(59, 130, 246, 0.3);
}

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

html {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  color: var(--text-main);
  background-color: var(--bg-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

ul, ol {
  list-style: none;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

/* Ambient Background Light Glow Orbs */
.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}

.glow-1 {
  top: 50px;
  left: 10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.3) 0%, transparent 70%);
}

.glow-2 {
  top: 600px;
  right: 5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, transparent 70%);
}

/* --------------------------------------------------------------------------
   3. Container & Section Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.section {
  padding: 5.5rem 0;
  position: relative;
}

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  background-color: var(--primary-light);
  border: 1px solid var(--primary-border);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.85rem;
}

.section-title {
  font-family: 'Outfit', sans-serif;
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-subtle);
  font-weight: 500;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   4. Buttons & Badges
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}

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

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.9rem 1.85rem;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.btn-full {
  width: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
}

.badge-success {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* --------------------------------------------------------------------------
   5. Announcement Bar & Header Navigation
   -------------------------------------------------------------------------- */
.announcement-bar {
  background-color: var(--bg-alt);
  border-bottom: 1px solid var(--border-color);
  padding: 0.55rem 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.announcement-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  text-align: center;
}

.announcement-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 800;
  font-size: 0.725rem;
  color: var(--accent-emerald);
  background-color: rgba(16, 185, 129, 0.12);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.status-dot {
  width: 7px;
  height: 7px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--accent-emerald);
}

.announcement-link {
  color: var(--primary);
  font-weight: 700;
}

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

.main-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-header);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-normal);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text-main);
}

.logo-icon {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: var(--radius-sm);
  background-color: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.logo-accent {
  color: var(--primary);
}

.logo-dot {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  position: relative;
  padding: 0.35rem 0;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
  border-radius: var(--radius-full);
}

.nav-count {
  font-size: 0.6875rem;
  font-weight: 800;
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-full);
}

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

.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.sun-icon { display: none; }
.moon-icon { display: block; }

html.dark .sun-icon { display: block; }
html.dark .moon-icon { display: none; }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 5px;
}

.hamburger-line {
  width: 22px;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Mobile Nav Drawer */
.mobile-menu {
  position: fixed;
  inset: 0;
  background-color: var(--bg-primary);
  z-index: 200;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: translateX(100%);
  transition: transform var(--transition-slow);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.menu-close {
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--text-main);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 2rem 0;
}

.mobile-nav-link {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

/* --------------------------------------------------------------------------
   6. Hero Section Styling
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 4.5rem 0 5.5rem 0;
  background: radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.08), transparent 70%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.inline-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--primary);
  background-color: var(--primary-light);
  border: 1px solid var(--primary-border);
  padding: 0.4rem 0.95rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
  animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(37, 99, 235, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); }
}

.hero-title {
  font-family: 'Outfit', sans-serif;
  font-size: 3.15rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.highlight-text {
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 2rem;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

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

.stat-val-group {
  display: flex;
  align-items: baseline;
}

.stat-number {
  font-family: 'Outfit', sans-serif;
  font-size: 1.95rem;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1;
}

.stat-plus {
  color: var(--primary);
  font-weight: 900;
  font-size: 1.25rem;
  margin-left: 1px;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-subtle);
  margin-top: 0.25rem;
}

.stat-divider {
  width: 1px;
  height: 2.25rem;
  background-color: var(--border-color);
}

/* Hero Right Column: Designer Profile & Code Card */
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.profile-preview-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.profile-preview-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.profile-card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.profile-avatar-circle {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #ffffff;
  font-weight: 900;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.online-indicator {
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 11px;
  height: 11px;
  background-color: var(--accent-emerald);
  border: 2px solid var(--bg-card);
  border-radius: 50%;
}

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

.profile-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.profile-role {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
}

.profile-location {
  font-size: 0.725rem;
  color: var(--text-subtle);
  margin-top: 0.15rem;
}

/* Visual Terminal Card */
.visual-card {
  background-color: #0c1220;
  border: 1px solid #1e2d4a;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  color: #f8fafc;
}

.visual-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background-color: #060912;
  border-bottom: 1px solid #1e2d4a;
}

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

.control {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

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

.window-title {
  font-size: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
  color: #64748b;
}

.code-lang-tag {
  font-size: 0.65rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: #38bdf8;
  background-color: rgba(56, 189, 248, 0.1);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.visual-card-body {
  padding: 1.5rem;
}

.code-preview {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.825rem;
  line-height: 1.8;
  color: #cbd5e1;
  margin-bottom: 1.5rem;
}

.code-keyword { color: #38bdf8; font-weight: bold; }
.code-variable { color: #f472b6; }
.code-property { color: #818cf8; }
.code-string { color: #34d399; }
.code-number { color: #fbbf24; }
.code-comment { color: #64748b; font-style: italic; }
.indent { padding-left: 1.25rem; }

.card-features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
  padding-top: 1rem;
  border-top: 1px solid #1e2d4a;
}

.feature-chip {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: #38bdf8;
  background-color: rgba(56, 189, 248, 0.1);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.chip-icon {
  font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   7. About Grid
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.about-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2.25rem 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  transition: all var(--transition-normal);
}

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

.about-icon-wrapper {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-icon-wrapper.blue {
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

.about-icon-wrapper.emerald {
  background-color: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.about-icon-wrapper.purple {
  background-color: rgba(139, 92, 246, 0.12);
  color: var(--accent-purple);
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.about-icon-wrapper.amber {
  background-color: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.about-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
  color: var(--text-main);
}

.about-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.card-tag-pill {
  font-size: 0.725rem;
  font-weight: 800;
  color: var(--text-subtle);
  background-color: var(--bg-card-hover);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  width: fit-content;
}

/* --------------------------------------------------------------------------
   8. Skills Section
   -------------------------------------------------------------------------- */
.skill-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.skill-tab {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.skill-tab.active, .skill-tab:hover {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
}

.skill-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.35rem 1.6rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

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

.skill-card-top {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
}

.skill-badge-icon {
  font-size: 1.25rem;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  background-color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--primary-border);
}

.skill-header {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  font-weight: 700;
}

.skill-name {
  color: var(--text-main);
}

.skill-percent {
  color: var(--primary);
  font-weight: 800;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #8b5cf6);
  border-radius: var(--radius-full);
  transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --------------------------------------------------------------------------
   9. Projects Showcase Section (17 Items)
   -------------------------------------------------------------------------- */
.project-toolbar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 850px) {
  .project-toolbar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.project-categories {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.project-cat-btn {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.project-cat-btn.active, .project-cat-btn:hover {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
}

.search-box {
  position: relative;
  min-width: 290px;
}

.search-box svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-subtle);
}

.search-box input {
  width: 100%;
  padding: 0.7rem 1rem 0.7rem 2.6rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Stacked Projects Cards List */
.projects-stack-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.project-row-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  transition: all var(--transition-normal);
}

@media (min-width: 1024px) {
  .project-row-card {
    flex-direction: row;
    align-items: center;
  }
}

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

.project-badge-num {
  position: absolute;
  top: 1rem;
  left: 1rem;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #ffffff;
  font-weight: 900;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.35);
}

.project-preview-mockup {
  width: 100%;
  height: 180px;
  background-color: #0b1120;
  border: 1px solid #1e2e4a;
  border-radius: var(--radius-lg);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex-shrink: 0;
}

@media (min-width: 1024px) {
  .project-preview-mockup {
    width: 290px;
    height: 175px;
  }
}

.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #1e2e4a;
  padding-bottom: 0.5rem;
}

.mockup-url {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: #64748b;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 160px;
}

.mockup-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  flex: 1;
}

.project-info-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-tags-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.project-cat-tag {
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  background-color: var(--primary-light);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary-border);
}

.project-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.project-desc {
  font-size: 0.885rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tech-pill {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-subtle);
  background-color: var(--bg-card-hover);
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
}

.project-actions-col {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-width: 160px;
}

@media (min-width: 640px) and (max-width: 1023px) {
  .project-actions-col {
    flex-direction: row;
  }
}

/* --------------------------------------------------------------------------
   10. Timeline Section
   -------------------------------------------------------------------------- */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
  position: relative;
  max-width: 840px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 1.25rem;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--border-color));
}

.timeline-item {
  position: relative;
  padding-left: 3.75rem;
}

.timeline-badge {
  position: absolute;
  left: 0;
  top: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #ffffff;
  font-weight: 900;
  font-size: 0.8125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 4px var(--bg-primary), 0 4px 10px rgba(37, 99, 235, 0.3);
}

.timeline-content {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.timeline-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.timeline-date {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.company-badge {
  font-size: 0.6875rem;
  font-weight: 800;
  color: var(--accent-emerald);
  background-color: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
}

.timeline-role {
  font-family: 'Outfit', sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.timeline-company {
  font-size: 0.875rem;
  color: var(--text-subtle);
  font-weight: 600;
  margin-bottom: 0.85rem;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.timeline-highlights {
  margin-top: 1rem;
  padding-left: 1.1rem;
  list-style-type: disc;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   11. Testimonials
   -------------------------------------------------------------------------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.5rem;
}

.testimonial-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2.25rem;
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.stars {
  color: var(--accent-amber);
  font-size: 1.15rem;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 0.9375rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.65;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.author-avatar {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-border));
  color: var(--primary);
  font-weight: 800;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--primary-border);
}

.author-name {
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--text-main);
}

.author-title {
  font-size: 0.75rem;
  color: var(--text-subtle);
}

/* --------------------------------------------------------------------------
   12. Contact & Form
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

.contact-info {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 2rem;
  box-shadow: var(--shadow-sm);
}

.contact-info-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.contact-info-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-icon {
  width: 2.85rem;
  height: 2.85rem;
  border-radius: var(--radius-md);
  background-color: var(--primary-light);
  border: 1px solid var(--primary-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-label {
  display: block;
  font-size: 0.725rem;
  font-weight: 800;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-value {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-main);
}

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

.contact-availability {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent-emerald);
  padding: 0.9rem 1.1rem;
  background-color: rgba(16, 185, 129, 0.1);
  border-radius: var(--radius-md);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.status-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-emerald);
  flex-shrink: 0;
}

.contact-form-wrapper {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-main);
}

.required {
  color: var(--accent-red);
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-error {
  display: none;
  font-size: 0.75rem;
  color: var(--accent-red);
  font-weight: 600;
}

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

.form-group.has-error .form-error {
  display: block;
}

.form-status {
  display: none;
  padding: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 700;
  text-align: center;
}

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

/* --------------------------------------------------------------------------
   13. Footer
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--bg-alt);
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 0;
  font-size: 0.875rem;
  color: var(--text-subtle);
}

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

.footer-copy {
  margin-top: 0.35rem;
  font-size: 0.8125rem;
  color: var(--text-subtle);
}

.back-to-top {
  font-weight: 800;
  font-size: 0.8125rem;
  color: var(--primary);
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-md);
  background-color: var(--primary-light);
  border: 1px solid var(--primary-border);
  transition: all var(--transition-fast);
}

.back-to-top:hover {
  background-color: var(--primary);
  color: #ffffff;
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   14. Modal Popup
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background-color: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 720px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2.25rem;
  position: relative;
  box-shadow: var(--shadow-xl);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--bg-card-hover);
  border: 1px solid var(--border-color);
  font-size: 1.5rem;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  cursor: pointer;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--accent-red);
  color: #ffffff;
  border-color: var(--accent-red);
}

/* --------------------------------------------------------------------------
   15. Responsive Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .desktop-nav, .desktop-only {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 1.25rem;
  }

  .stat-divider {
    display: none;
  }

  .contact-form-wrapper, .contact-info {
    padding: 1.75rem;
  }
}