/* ============================================
   PORTFOLIO WEBSITE — STYLES
   Dark theme with cyan/violet gradient accents
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161e;
  --bg-card-hover: #1c1c27;

  --text-primary: #e8e8ed;
  --text-secondary: #9494a8;
  --text-muted: #5c5c72;

  --accent-cyan: #00d4ff;
  --accent-violet: #7c3aed;
  --accent-pink: #ec4899;

  --gradient-main: linear-gradient(135deg, #00d4ff 0%, #7c3aed 50%, #ec4899 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(0,212,255,0.12) 0%, rgba(124,58,237,0.12) 50%, rgba(236,72,153,0.12) 100%);

  --border-color: rgba(255,255,255,0.06);
  --border-glow: rgba(0,212,255,0.2);

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(0, 212, 255, 0.25);
  color: #fff;
}

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

a:hover {
  color: #fff;
}

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

/* --- Cursor Glow --- */
.cursor-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
  opacity: 0;
}

body:hover .cursor-glow {
  opacity: 1;
}

/* --- Container --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition-base);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}

.nav-logo:hover {
  color: #fff;
}

.logo-bracket {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-link {
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.nav-link.active {
  color: var(--accent-cyan);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

#neuralCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 100px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  font-size: 0.85rem;
  color: var(--accent-cyan);
  font-weight: 500;
  margin-bottom: 32px;
  animation: fadeInUp 0.8s ease both;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34,197,94,0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(34,197,94,0); }
}

.hero-greeting {
  display: block;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-title-name {
  display: block;
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -2px;
  line-height: 1.05;
  background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 40%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-title-wrapper {
  margin-top: 8px;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-title {
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  font-weight: 600;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-bottom: 48px;
  animation: fadeInUp 0.8s ease 0.5s both;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
  line-height: 1.2;
}

.stat-plus {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-color);
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  animation: fadeInUp 0.8s ease 0.6s both;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-xl);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  font-family: var(--font-main);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 24px rgba(0, 212, 255, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.35);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.15);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.3);
  color: #fff;
}

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

/* --- Scroll Indicator --- */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: fadeInUp 0.8s ease 0.8s both;
}

.mouse {
  width: 24px;
  height: 38px;
  border-radius: 12px;
  border: 2px solid var(--text-muted);
  position: relative;
}

.wheel {
  width: 3px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-wheel 2s infinite;
}

@keyframes scroll-wheel {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

.scroll-indicator span {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* --- Section Common --- */
.section {
  padding: 120px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
}

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

.section-subtitle {
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 80px;
  align-items: center;
}

.about-image-wrapper {
  position: relative;
}

.about-avatar {
  width: 280px;
  height: 320px;
  border-radius: var(--radius-lg);
  background: var(--gradient-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.avatar-placeholder {
  color: var(--text-muted);
  opacity: 0.5;
}

.about-image-decoration {
  position: absolute;
  top: -12px;
  right: -12px;
  bottom: 12px;
  left: 12px;
  border: 2px solid var(--accent-cyan);
  border-radius: var(--radius-lg);
  opacity: 0.15;
  z-index: -1;
}

.about-experience-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}

.exp-number {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.exp-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  font-weight: 500;
}

.about-lead {
  font-size: 1.2rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-lead strong {
  color: var(--accent-cyan);
}

.about-body {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
}

.about-highlights {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.highlight-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--gradient-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

.highlight-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.highlight-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* --- Experience / Timeline --- */
.timeline {
  position: relative;
  max-width: 740px;
  margin: 0 auto;
}

.timeline-line {
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-violet), transparent);
  opacity: 0.3;
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  margin-bottom: 48px;
}

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

.timeline-marker {
  position: absolute;
  left: 12px;
  top: 6px;
}

.timeline-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 3px solid var(--accent-cyan);
  background: var(--bg-primary);
  position: relative;
}

.timeline-dot::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--accent-cyan);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.timeline-item:hover .timeline-dot::after {
  opacity: 1;
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  transition: all var(--transition-base);
}

.timeline-content:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 8px;
  font-weight: 500;
}

.timeline-role {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.timeline-company {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 12px;
}

.timeline-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

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

.timeline-tags span {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(0, 212, 255, 0.08);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 212, 255, 0.15);
}

/* --- Projects Section --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.project-filter-btn {
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--transition-base);
}

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

.project-filter-btn.active {
  border-color: rgba(0, 212, 255, 0.5);
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.08);
}

.project-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: all var(--transition-slow);
  overflow: hidden;
  display: block;
  text-decoration: none;
  color: var(--text-primary);
  cursor: pointer;
}

.project-card:hover {
  color: var(--text-primary);
}

.project-view-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  opacity: 0;
  transform: translateX(-8px);
  transition: all var(--transition-base);
}

.project-card:hover .project-view-link {
  opacity: 1;
  transform: translateX(0);
}

.project-card-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.project-card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
  color: var(--text-primary);
  text-decoration: none;
}

.project-card:hover .project-card-glow {
  opacity: 1;
}

.project-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--gradient-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 20px;
}

.project-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
  line-height: 1.7;
}

.project-metrics {
  display: flex;
  gap: 24px;
  margin-bottom: 20px;
  padding: 16px;
  background: rgba(0, 212, 255, 0.03);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 212, 255, 0.06);
}

.metric {
  text-align: center;
  flex: 1;
}

.metric-value {
  display: block;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent-cyan);
  line-height: 1.3;
}

.metric-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-tech span {
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 500;
  background: rgba(124, 58, 237, 0.08);
  color: rgba(167, 139, 250, 0.9);
  border: 1px solid rgba(124, 58, 237, 0.15);
}

/* --- Skills Section --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition-base);
}

.skill-category:hover {
  border-color: var(--border-glow);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.skill-category-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--gradient-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

.skill-category-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.skill-items {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.skill-name {
  font-size: 0.85rem;
  color: var(--text-secondary);
  min-width: 160px;
  flex-shrink: 0;
}

.skill-bar {
  flex: 1;
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  width: 0;
  border-radius: 3px;
  background: var(--gradient-main);
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Testimonials --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  position: relative;
  transition: all var(--transition-base);
}

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

.testimonial-quote {
  position: absolute;
  top: 24px;
  right: 28px;
  color: var(--accent-cyan);
}

.testimonial-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.testimonial-author strong {
  display: block;
  font-size: 0.9rem;
}

.testimonial-author span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  transition: all var(--transition-base);
}

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

.contact-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--gradient-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

.contact-card h4 {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.contact-card span,
.contact-card a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.social-link {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.social-link:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.08);
  transform: translateY(-2px);
}

/* --- Contact Form --- */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-group {
  position: relative;
  margin-bottom: 28px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 16px 0 8px;
  font-size: 1rem;
  font-family: var(--font-main);
  color: var(--text-primary);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-color);
  outline: none;
  transition: border-color var(--transition-base);
  resize: none;
}

.form-group label {
  position: absolute;
  top: 16px;
  left: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
  pointer-events: none;
  transition: all var(--transition-base);
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
  top: -4px;
  font-size: 0.75rem;
  color: var(--accent-cyan);
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--accent-cyan);
}

.form-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  transition: width var(--transition-base);
}

.form-group input:focus ~ .form-line,
.form-group textarea:focus ~ .form-line {
  width: 100%;
}

.contact-form .btn {
  margin-top: 8px;
  font-size: 1rem;
  padding: 16px 32px;
}

/* --- Nav CV Button --- */
.nav-cv-btn {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 100px !important;
  padding: 6px 18px !important;
  font-weight: 600 !important;
  transition: all var(--transition-base);
}

.nav-cv-btn:hover {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.15);
}

/* --- Education Section --- */
.education-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.education-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.education-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.education-card:hover::before {
  opacity: 1;
}

.education-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--gradient-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 20px;
}

.education-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 8px;
  font-weight: 500;
}

.education-degree {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.education-school {
  font-size: 0.95rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 12px;
}

.education-detail {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
  font-style: italic;
}

.education-courses {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.education-courses span {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 500;
  background: rgba(124, 58, 237, 0.08);
  color: rgba(167, 139, 250, 0.9);
  border: 1px solid rgba(124, 58, 237, 0.15);
}

.education-teaching {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.education-teaching strong {
  color: var(--accent-cyan);
}

/* --- Footer --- */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  text-align: center;
}

.footer-logo {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.footer-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

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

/* --- Scroll Reveal Animation --- */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .testimonials-grid .testimonial-card:last-child {
    grid-column: span 2;
    max-width: 50%;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 80px 32px 32px;
    transition: right var(--transition-slow);
    border-left: 1px solid var(--border-color);
    gap: 4px;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

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

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

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

  .about-image-col {
    display: flex;
    justify-content: center;
  }

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

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

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

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

  .testimonials-grid .testimonial-card:last-child {
    grid-column: span 1;
    max-width: 100%;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-stats {
    gap: 20px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .stat-plus {
    font-size: 2rem;
  }

  .skill-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .skill-name {
    min-width: auto;
  }

  .skill-bar {
    width: 100%;
  }

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

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

  .scroll-indicator {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .contact-form {
    padding: 24px;
  }

  .section {
    padding: 80px 0;
  }
}