/* ==========================================================================
   Md. Enamul Haque — Portfolio Styles
   Dark (default) + Light theme · Blue-violet gradient accent
   ========================================================================== */

/* --------------------------------------------------------------------------
   Custom Properties — Dark (default)
   -------------------------------------------------------------------------- */
:root,
[data-theme="dark"] {
  color-scheme: dark;

  --bg-primary: #0b0d12;
  --bg-secondary: #111520;
  --bg-elevated: #161b28;
  --bg-card: #1a2030;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);

  --text-primary: #f0f2f8;
  --text-secondary: #9aa3b8;
  --text-muted: #6b7589;

  --accent-start: #6366f1;
  --accent-end: #8b5cf6;
  --accent-glow: rgba(99, 102, 241, 0.35);

  --gradient: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  --gradient-text: linear-gradient(135deg, #818cf8, #a78bfa, #c084fc);

  --success: #34d399;
  --success-soft: rgba(52, 211, 153, 0.12);
  --header-bg: rgba(11, 13, 18, 0.85);
  --nav-mobile-bg: rgba(11, 13, 18, 0.97);
  --media-bg: #12151f;
  --icon-shadow: rgba(255, 255, 255, 0.1);
  --selection-bg: rgba(99, 102, 241, 0.4);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --nav-height: 72px;
  --section-padding: clamp(4rem, 8vw, 7rem);
  --container: min(1120px, 92vw);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px var(--accent-glow);

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --------------------------------------------------------------------------
   Custom Properties — Light
   -------------------------------------------------------------------------- */
[data-theme="light"] {
  color-scheme: light;

  --bg-primary: #f4f6fb;
  --bg-secondary: #eef1f8;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --border: rgba(15, 23, 42, 0.1);
  --border-hover: rgba(15, 23, 42, 0.18);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --accent-start: #4f46e5;
  --accent-end: #7c3aed;
  --accent-glow: rgba(79, 70, 229, 0.22);

  --gradient: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  --gradient-text: linear-gradient(135deg, #4f46e5, #7c3aed, #9333ea);

  --success: #059669;
  --success-soft: rgba(5, 150, 105, 0.1);
  --header-bg: rgba(244, 246, 251, 0.88);
  --nav-mobile-bg: rgba(255, 255, 255, 0.98);
  --media-bg: #e8ecf5;
  --icon-shadow: rgba(15, 23, 42, 0.08);
  --selection-bg: rgba(79, 70, 229, 0.25);

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.1);
  --shadow-glow: 0 0 36px var(--accent-glow);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

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

ul {
  list-style: none;
}

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

::selection {
  background: var(--selection-bg);
  color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   Utilities
   -------------------------------------------------------------------------- */
.container {
  width: var(--container);
  margin-inline: auto;
}

.section {
  padding-block: var(--section-padding);
}

.section-header {
  margin-bottom: 3rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-start);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

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

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

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

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

.btn-primary:hover {
  box-shadow: 0 6px 28px var(--accent-glow);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1.5px solid var(--border-hover);
  color: var(--text-primary);
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--accent-start);
  background: rgba(99, 102, 241, 0.08);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

/* --------------------------------------------------------------------------
   Header / Navigation
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}

.header.scrolled {
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

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

.nav-logo {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-logo span {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  transition: color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.5rem;
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.theme-toggle .icon-moon {
  fill: currentColor;
  stroke: none;
}

.theme-toggle .icon-sun {
  fill: none;
}

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

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon,
:root:not([data-theme]) .theme-toggle .icon-moon {
  display: block;
}

.nav-link {
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

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

.nav-link.active {
  background: rgba(99, 102, 241, 0.12);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.nav-toggle:hover {
  background: var(--bg-elevated);
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--success);
  background: var(--success-soft);
  border: 1px solid rgba(52, 211, 153, 0.25);
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-greeting {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: var(--accent-start);
  margin-bottom: 0.75rem;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.hero-role {
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.hero-role .tech {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: var(--accent-start);
}

.hero-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 480px;
}

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

.hero-stats {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.stat {
  text-align: left;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.hero-image-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 2.25rem 1.5rem 0;
}

.hero-image-ring {
  position: relative;
  width: clamp(260px, 30vw, 340px);
  height: clamp(260px, 30vw, 340px);
  aspect-ratio: 1 / 1;
  flex-shrink: 0;
  border-radius: 50%;
  padding: 5px;
  background: var(--gradient);
  box-shadow: var(--shadow-glow);
  animation: hero-glow 4s ease-in-out infinite;
  overflow: visible;
}

.hero-image-ring::before {
  content: '';
  position: absolute;
  inset: -18px;
  border-radius: 50%;
  border: 1px dashed rgba(129, 140, 248, 0.35);
  animation: ring-spin 18s linear infinite;
}

.hero-image-ring::after {
  content: '';
  position: absolute;
  inset: -34px;
  border-radius: 50%;
  border: 1px solid rgba(99, 102, 241, 0.12);
  animation: ring-spin-reverse 28s linear infinite;
}

.hero-orbit {
  position: absolute;
  inset: -26px;
  border-radius: 50%;
  animation: ring-spin 12s linear infinite;
  pointer-events: none;
  z-index: 2;
}

.hero-orbit-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #a5b4fc;
  box-shadow: 0 0 12px rgba(129, 140, 248, 0.8);
}

.hero-orbit-dot:nth-child(1) {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}

.hero-orbit-dot:nth-child(2) {
  right: 6%;
  bottom: 28%;
  width: 6px;
  height: 6px;
  background: #818cf8;
  opacity: 0.85;
}

.hero-orbit-dot:nth-child(3) {
  left: 10%;
  bottom: 18%;
  width: 5px;
  height: 5px;
  background: #c4b5fd;
  opacity: 0.7;
}

@keyframes ring-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes ring-spin-reverse {
  from { transform: rotate(360deg); }
  to { transform: rotate(0deg); }
}

@keyframes hero-glow {
  0%, 100% {
    box-shadow: 0 0 28px rgba(99, 102, 241, 0.28);
  }
  50% {
    box-shadow: 0 0 42px rgba(139, 92, 246, 0.42);
  }
}

.hero-image {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center 18%;
  border-radius: 50%;
  border: 4px solid var(--bg-primary);
}

.hero-social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.75rem;
  justify-content: center;
  position: relative;
  z-index: 2;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: color var(--transition), border-color var(--transition), transform var(--transition), background var(--transition);
}

.social-link:hover {
  color: var(--text-primary);
  border-color: var(--accent-start);
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-3px);
}

.social-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* --------------------------------------------------------------------------
   About
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.about-card {
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition);
}

.about-card:hover {
  border-color: var(--border-hover);
}

.about-card-label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.375rem;
}

.about-card-value {
  font-size: 0.9375rem;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Timeline (Experience)
   -------------------------------------------------------------------------- */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-start), var(--accent-end), transparent);
  border-radius: 2px;
}

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

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

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 8px;
  width: 12px;
  height: 12px;
  margin-left: -5px;
  background: var(--gradient);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-glow);
}

.timeline-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-bottom: 0.5rem;
}

.timeline-role {
  font-size: 1.125rem;
  font-weight: 700;
}

.timeline-company {
  font-size: 0.9375rem;
  color: var(--accent-start);
  font-weight: 600;
}

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.timeline-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  color: #a5b4fc;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.timeline-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.timeline-bullets {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.timeline-bullets li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.timeline-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-start);
  font-size: 0.75rem;
}

/* --------------------------------------------------------------------------
   Projects
   -------------------------------------------------------------------------- */
.project-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: 0.5rem 1.125rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

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

.filter-btn.active {
  color: #fff;
  background: var(--gradient);
  border-color: transparent;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.project-card.filter-in {
  animation: projectCardIn 0.4s ease both;
}

@keyframes projectCardIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.project-card:hover {
  transform: translateY(-3px);
  border-color: rgba(99, 102, 241, 0.35);
  box-shadow: var(--shadow-md);
}

.project-card.featured {
  border-color: rgba(99, 102, 241, 0.3);
  background: linear-gradient(160deg, var(--bg-card) 0%, rgba(99, 102, 241, 0.05) 100%);
}

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

.project-media {
  position: relative;
  height: 152px;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.12), transparent 70%), var(--media-bg);
}

.project-media--telecom {
  background: radial-gradient(ellipse at 50% 0%, rgba(239, 68, 68, 0.15), transparent 70%), var(--media-bg);
}

.project-media--spiritual {
  background: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.18), transparent 70%), var(--media-bg);
}

.project-media--ecommerce {
  background: radial-gradient(ellipse at 50% 0%, rgba(236, 72, 153, 0.15), transparent 70%), var(--media-bg);
}

.project-media--utilities {
  background: radial-gradient(ellipse at 50% 0%, rgba(34, 197, 94, 0.12), transparent 70%), var(--media-bg);
}

.project-media--lifestyle {
  background: radial-gradient(ellipse at 50% 0%, rgba(251, 191, 36, 0.12), transparent 70%), var(--media-bg);
}

.project-media--healthcare {
  background: radial-gradient(ellipse at 50% 0%, rgba(20, 184, 166, 0.12), transparent 70%), var(--media-bg);
}

.project-media--more {
  background: radial-gradient(ellipse at 50% 0%, rgba(107, 114, 128, 0.15), transparent 70%), var(--media-bg);
}

.project-media-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 1rem 1.25rem 0.75rem;
}

.project-media--icon .project-media-frame img {
  width: 88px;
  height: 88px;
  max-width: 88px;
  max-height: 88px;
  object-fit: cover;
  border-radius: 20px;
  box-shadow:
    0 0 0 1px var(--icon-shadow),
    0 16px 32px rgba(0, 0, 0, 0.25);
  transition: transform 0.4s ease;
}

.project-card:hover .project-media-frame img {
  transform: translateY(-3px) scale(1.02);
}

.project-media-frame--empty {
  opacity: 1;
}

.project-media-art {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-muted);
}

.project-media-art svg {
  width: 52px;
  height: 52px;
}

.project-media-art--private {
  color: rgba(167, 139, 250, 0.45);
}

.project-media-art--private span {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(167, 139, 250, 0.55);
}

.project-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.25rem 1.35rem 1.35rem;
}

.project-stat {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--success);
  margin-bottom: 0.35rem;
}

.project-role {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

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

.project-name {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.3;
}

.project-badge {
  flex-shrink: 0;
  padding: 0.25rem 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-start);
  background: rgba(99, 102, 241, 0.12);
  border-radius: var(--radius-full);
}

.project-badge.featured-badge {
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.12);
}

.project-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  flex: 1;
  margin-bottom: 1rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 3.9rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1.25rem;
}

.project-tag {
  padding: 0.2rem 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-top: auto;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.project-link span {
  line-height: 1;
}

.project-link svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
  flex-shrink: 0;
}

.project-link .link-external {
  width: 11px;
  height: 11px;
  fill: none;
  opacity: 0.5;
  margin-left: 0.1rem;
}

.project-link:hover {
  color: var(--text-primary);
  border-color: var(--accent-start);
  background: rgba(99, 102, 241, 0.1);
}

.project-link:hover .link-external {
  opacity: 1;
}

.store-groups {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: auto;
}

.store-group-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.375rem;
}

/* --------------------------------------------------------------------------
   Skills
   -------------------------------------------------------------------------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.875rem;
}

.skill-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.skill-chip:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.12);
}

/* --------------------------------------------------------------------------
   Education
   -------------------------------------------------------------------------- */
.education-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.education-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition);
}

.education-item:hover {
  border-color: var(--border-hover);
}

.education-degree {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.education-school {
  font-size: 0.9375rem;
  color: var(--accent-start);
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.education-detail {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.education-date {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: right;
  white-space: nowrap;
}

.education-gpa {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* --------------------------------------------------------------------------
   Awards & Publications
   -------------------------------------------------------------------------- */
.awards-list,
.publications-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.award-item,
.publication-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition);
}

.award-item:hover,
.publication-item:hover {
  border-color: var(--border-hover);
}

.award-icon,
.publication-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.12);
  border-radius: var(--radius-sm);
  color: var(--accent-start);
  font-size: 1rem;
}

.award-text,
.publication-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.publication-text a {
  color: var(--accent-start);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.publication-text a:hover {
  color: #a78bfa;
}

/* --------------------------------------------------------------------------
   Contact
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 1.5rem;
  align-items: stretch;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  height: 100%;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
  padding: 1.15rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}

a.contact-item:hover {
  border-color: rgba(99, 102, 241, 0.4);
  background: rgba(99, 102, 241, 0.04);
  transform: translateY(-1px);
}

a.contact-item:hover .contact-item-value {
  color: var(--accent-start);
}

.contact-item-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.12);
  border-radius: var(--radius-sm);
  color: var(--accent-start);
}

.contact-item-icon svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
}

.contact-item-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.contact-item-value {
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  word-break: break-word;
  transition: color var(--transition);
}

.contact-cta {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.75rem;
  height: 100%;
  min-height: 100%;
  padding: 2rem 2.25rem;
  background:
    radial-gradient(ellipse 90% 70% at 100% 0%, rgba(99, 102, 241, 0.16), transparent 55%),
    linear-gradient(165deg, var(--bg-card) 0%, rgba(99, 102, 241, 0.05) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.contact-cta p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 34ch;
}

.contact-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.contact-social {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.contact-social .social-link {
  width: 44px;
  height: 44px;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer span {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
    order: 2;
  }

  .hero-image-wrap {
    order: 1;
  }

  .hero-desc {
    max-width: 100%;
    margin-inline: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

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

  .contact-cta {
    min-height: auto;
  }

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

  .education-date {
    text-align: left;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-controls {
    margin-left: auto;
  }

  .nav-links {
    margin-left: 0;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: var(--nav-mobile-bg);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    padding: 0.875rem 1rem;
    font-size: 1rem;
  }

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

  .timeline-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    gap: 1.5rem;
  }

  .stat-value {
    font-size: 1.625rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .project-filters {
    gap: 0.375rem;
  }

  .filter-btn {
    padding: 0.4rem 0.875rem;
    font-size: 0.75rem;
  }
}

/* --------------------------------------------------------------------------
   Reduced Motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero-badge::before {
    animation: none;
  }

  .hero-image-ring,
  .hero-image-ring::before,
  .hero-image-ring::after,
  .hero-orbit {
    animation: none;
  }

  .project-card.filter-in {
    animation: none;
  }
}


/* QA improvements */
.filter-btn:focus-visible,
.nav-link:focus-visible,
.btn:focus-visible,
.project-link:focus-visible,
.social-link:focus-visible,
.contact-item:focus-visible {
  outline: 2px solid var(--accent-start);
  outline-offset: 3px;
}

body.nav-open {
  overflow: hidden;
}

.project-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: auto;
  padding-top: 0.75rem;
}

.projects-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
}

.projects-empty.hidden {
  display: none;
}

.skills-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.skill-group {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.skill-group-title {
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.footer-brand {
  font-size: 1.125rem;
  font-weight: 700;
}

.footer-brand span {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  width: 100%;
  text-align: center;
}