:root {
  --bg-main: #0a0e14;
  --bg-card: rgba(22, 27, 34, 0.75);
  --bg-card-hover: rgba(30, 38, 48, 0.9);
  --bg-subtle: rgba(255, 255, 255, 0.04);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(56, 189, 248, 0.35);
  
  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --text-faint: #484f58;

  --accent-cyan: #38bdf8;
  --accent-indigo: #818cf8;
  --accent-emerald: #34d399;
  --accent-amber: #fbbf24;
  --accent-rose: #f43f5e;

  --glow-color-1: rgba(56, 189, 248, 0.12);
  --glow-color-2: rgba(129, 140, 248, 0.1);

  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 20px 40px -15px rgba(56, 189, 248, 0.18);
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  background-color: var(--bg-main);
}

/* Background Atmosphere */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
}

.bg-glow-1 {
  top: -10vw;
  right: -5vw;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, var(--glow-color-1) 0%, transparent 70%);
}

.bg-glow-2 {
  top: 40vh;
  left: -10vw;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--glow-color-2) 0%, transparent 70%);
}

.bg-grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* Page Shell */
.page-shell {
  position: relative;
  z-index: 1;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Utilities */
.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--accent-cyan);
}

.gradient-text {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo));
  color: #06090e;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(56, 189, 248, 0.45);
}

.btn-secondary {
  background: var(--bg-subtle);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.btn-ghost:hover {
  color: var(--text-main);
  background: var(--bg-subtle);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

/* Site Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
}

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

/* Hero Section */
.hero-section {
  padding: 80px 0 60px;
  max-width: 840px;
}

.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(52, 211, 153, 0.08);
  border: 1px solid rgba(52, 211, 153, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  color: var(--accent-emerald);
  font-weight: 600;
  margin-bottom: 24px;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse 2.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 32px;
}

.hero-subtitle strong {
  color: var(--text-main);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 50px;
}

.hero-stats-strip {
  display: flex;
  align-items: center;
  gap: 30px;
  padding: 18px 24px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  width: fit-content;
}

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

.stat-number {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

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

/* Projects Section */
.projects-section {
  padding: 60px 0 80px;
}

.section-heading-wrapper {
  margin-bottom: 32px;
}

.section-tag {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.section-description {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 620px;
}

/* Filter Bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.filter-pill {
  background: var(--bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.filter-pill:hover {
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.2);
}

.filter-pill.active {
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  border-color: rgba(56, 189, 248, 0.4);
}

/* Projects Grid using CSS Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

/* Project Card */
.project-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 26px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}

.project-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.project-icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 1.6rem;
  flex-shrink: 0;
}

.project-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.badge-live {
  background: rgba(52, 211, 153, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(52, 211, 153, 0.3);
}

.badge-source {
  background: rgba(129, 140, 248, 0.12);
  color: var(--accent-indigo);
  border: 1px solid rgba(129, 140, 248, 0.3);
}

.badge-hardware {
  background: rgba(251, 191, 36, 0.12);
  color: var(--accent-amber);
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.project-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
  color: var(--text-main);
}

.project-domain {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 12px;
  display: inline-block;
  text-decoration: none;
}

.project-domain:hover {
  text-decoration: underline;
}

.project-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 20px;
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
}

.tag-item {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: #a5b4fc;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
}

.project-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.action-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-main);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.action-link:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  color: #fff;
}

.action-link.primary-action {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border-color: rgba(56, 189, 248, 0.35);
}

.action-link.primary-action:hover {
  background: rgba(56, 189, 248, 0.25);
  border-color: var(--accent-cyan);
}

/* Suggest Box */
.suggest-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px 30px;
}

.suggest-content {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 680px;
}

.suggest-icon {
  font-size: 2rem;
  line-height: 1;
}

.suggest-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.suggest-text {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* About Section */
.about-section {
  padding: 40px 0 60px;
}

.about-card {
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px;
  overflow: hidden;
}

.about-glow {
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(129, 140, 248, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.about-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.about-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.about-content p {
  font-size: 1.02rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}

.tech-stack-wrap {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--border-subtle);
}

.tech-stack-title {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.pill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill-tag {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 500;
}

/* Contact Section */
.contact-section {
  padding: 40px 0 80px;
}

.contact-card {
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(13, 17, 23, 0.95) 100%);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px;
}

.contact-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.contact-desc {
  font-size: 1.02rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 600px;
}

.contact-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.contact-link-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: var(--transition);
}

.contact-link-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-2px);
}

.contact-link-icon {
  font-size: 1.4rem;
}

.contact-link-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}

.contact-link-name {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.contact-link-val {
  font-size: 0.9rem;
  color: var(--text-main);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.contact-link-arrow {
  color: var(--accent-cyan);
  font-weight: bold;
  font-size: 1.1rem;
  transition: var(--transition);
}

.contact-link-card:hover .contact-link-arrow {
  transform: translateX(3px);
}

/* Site Footer */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 30px 0 50px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.site-footer strong {
  color: var(--text-main);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-right a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-right a:hover {
  color: var(--text-main);
}

.dot-sep {
  opacity: 0.3;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .hero-section {
    padding: 40px 0 40px;
  }

  .hero-stats-strip {
    width: 100%;
    justify-content: space-around;
    gap: 10px;
  }

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

  .about-card, .contact-card {
    padding: 24px;
  }

  .suggest-box {
    padding: 20px;
  }
}