/* ==========================================================================
   VIBE CODING PORTFOLIO - MODERN CYBER GLASS DESIGN SYSTEM
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-dark: #070913;
  --bg-card: rgba(13, 19, 38, 0.65);
  --bg-card-hover: rgba(20, 29, 56, 0.8);
  --bg-card-border: rgba(255, 255, 255, 0.08);
  --bg-card-border-glow: rgba(99, 102, 241, 0.4);

  /* Accents */
  --cyan: #00f2fe;
  --cyan-glow: rgba(0, 242, 254, 0.35);
  --purple: #7928ca;
  --indigo: #6366f1;
  --indigo-glow: rgba(99, 102, 241, 0.35);
  --pink: #ec4899;
  --pink-glow: rgba(236, 72, 153, 0.35);
  --emerald: #10b981;
  --emerald-glow: rgba(16, 185, 129, 0.35);

  /* Gradients */
  --gradient-vibe: linear-gradient(135deg, #00f2fe 0%, #4facfe 30%, #6366f1 70%, #ec4899 100%);
  --gradient-btn: linear-gradient(135deg, #6366f1 0%, #4f46e5 50%, #3b82f6 100%);
  --gradient-glow: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);

  /* Typography */
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Text Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Layout & Spacing */
  --max-width: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transition */
  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

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

/* Canvas 3D Background */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: auto;
  opacity: 0.95;
}

/* Ambient Background Glows */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 1;
  opacity: 0.35;
  animation: floatAmbient 18s ease-in-out infinite alternate;
}

.glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #4f46e5 0%, transparent 70%);
  top: -100px;
  left: -100px;
}

.glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #06b6d4 0%, transparent 70%);
  bottom: 10%;
  right: -150px;
  animation-duration: 22s;
}

.glow-3 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #ec4899 0%, transparent 70%);
  top: 40%;
  left: 30%;
  animation-duration: 25s;
}

@keyframes floatAmbient {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 40px) scale(1.1); }
  100% { transform: translate(-40px, 60px) scale(0.95); }
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 10;
}

/* Glassmorphism Panel */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-panel:hover {
  border-color: var(--bg-card-border-glow);
  box-shadow: 0 16px 40px rgba(99, 102, 241, 0.15);
}

/* Typography Helpers */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

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

/* Navigation */
.navbar-wrapper {
  position: fixed;
  top: 18px;
  left: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  justify-content: center;
  padding: 0 20px;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 960px;
  padding: 12px 24px;
  background: rgba(10, 14, 28, 0.7);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text-primary);
}

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

.vibe-indicator {
  width: 10px;
  height: 10px;
  background-color: var(--emerald);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 10px var(--emerald);
}

.vibe-indicator.pulse {
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 28px;
}

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

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

.nav-actions {
  display: flex;
  gap: 10px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  font-family: var(--font-main);
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
  backdrop-filter: blur(12px);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn-radar {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15) 0%, rgba(99, 102, 241, 0.25) 100%);
  border: 1px solid rgba(0, 242, 254, 0.5);
  color: var(--cyan);
  box-shadow: 0 4px 20px rgba(0, 242, 254, 0.25);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

.btn-radar:hover {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.3) 0%, rgba(99, 102, 241, 0.4) 100%);
  border-color: var(--cyan);
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.5);
  color: white;
  transform: translateY(-2px);
}

.radar-dot {
  width: 9px;
  height: 9px;
  background-color: var(--cyan);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 10px var(--cyan);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-xs {
  padding: 6px 12px;
  font-size: 0.8rem;
}

/* Sections */
.section {
  padding: 110px 0;
  position: relative;
  z-index: 10;
}

.section-header {
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--cyan);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.2);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.5rem;
  line-height: 1.2;
  margin-bottom: 14px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 620px;
  margin: 0 auto;
}

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

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 100px;
  padding-bottom: 60px;
  position: relative;
  z-index: 10;
}

.hero-content {
  text-align: center;
  max-width: 860px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  backdrop-filter: blur(10px);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  font-weight: 900;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 740px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle strong {
  color: var(--cyan);
  font-weight: 600;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.metric-card {
  background: rgba(13, 19, 38, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 16px 12px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  text-align: center;
  transition: var(--transition-smooth);
}

.metric-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-3px);
}

.metric-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  background: var(--gradient-vibe);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-cta-group {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  transition: var(--transition-smooth);
}

.scroll-indicator:hover {
  color: var(--cyan);
}

.mouse {
  width: 22px;
  height: 36px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  position: relative;
}

.wheel {
  width: 4px;
  height: 8px;
  background-color: var(--cyan);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: mouseWheel 1.8s infinite;
}

@keyframes mouseWheel {
  0% { top: 6px; opacity: 1; }
  100% { top: 18px; opacity: 0; }
}

/* Philosophy Section */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tilt-card {
  padding: 36px 32px;
  position: relative;
  transition: transform 0.15s ease-out, border-color 0.3s;
}

.tilt-card h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.tilt-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.card-step {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.card-icon.cyan { background: rgba(0, 242, 254, 0.12); color: var(--cyan); border: 1px solid rgba(0, 242, 254, 0.3); }
.card-icon.purple { background: rgba(121, 40, 202, 0.12); color: #a855f7; border: 1px solid rgba(168, 85, 247, 0.3); }
.card-icon.pink { background: rgba(236, 72, 153, 0.12); color: var(--pink); border: 1px solid rgba(236, 72, 153, 0.3); }
.card-icon.emerald { background: rgba(16, 185, 129, 0.12); color: var(--emerald); border: 1px solid rgba(16, 185, 129, 0.3); }

/* Filter Tabs */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--gradient-btn);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 15px var(--indigo-glow);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.project-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.badge-cyan { background: rgba(0, 242, 254, 0.15); color: var(--cyan); border-color: rgba(0, 242, 254, 0.3); }
.badge-pink { background: rgba(236, 72, 153, 0.15); color: var(--pink); border-color: rgba(236, 72, 153, 0.3); }
.badge-emerald { background: rgba(16, 185, 129, 0.15); color: var(--emerald); border-color: rgba(16, 185, 129, 0.3); }

.project-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.project-title {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.project-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.project-stat {
  font-size: 0.85rem;
  color: var(--emerald);
  font-family: var(--font-mono);
}

.btn-text {
  background: none;
  border: none;
  color: var(--cyan);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.btn-text:hover {
  color: white;
  text-shadow: 0 0 10px var(--cyan);
}

.badge-live {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--emerald);
  background: rgba(16, 185, 129, 0.15);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

/* Interactive Terminal */
.terminal-section {
  background: radial-gradient(circle at center, rgba(13, 19, 38, 0.8) 0%, transparent 80%);
}

.terminal-window {
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  background: rgba(9, 13, 25, 0.9);
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: rgba(17, 24, 45, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.terminal-buttons {
  display: flex;
  gap: 8px;
}

.t-btn {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.t-close { background-color: #ef4444; }
.t-minimize { background-color: #eab308; }
.t-maximize { background-color: #22c55e; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.terminal-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--emerald);
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.terminal-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  min-height: 280px;
  max-height: 460px;
  overflow-y: auto;
}

.t-line {
  margin-bottom: 6px;
  line-height: 1.5;
  word-break: break-word;
}

.t-banner {
  color: var(--cyan);
  font-size: 0.75rem;
  white-space: pre;
  overflow-x: auto;
  line-height: 1.2;
  margin-bottom: 14px;
}

.text-dim { color: var(--text-muted); }
.text-cyan { color: var(--cyan); }
.text-emerald { color: var(--emerald); }
.text-pink { color: var(--pink); }

.terminal-input-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

.t-prompt {
  white-space: nowrap;
}

.t-user { color: var(--emerald); font-weight: 700; }
.t-host { color: var(--cyan); }
.t-path { color: #818cf8; }

#terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-primary);
}

.terminal-quick-cmds {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: rgba(13, 19, 38, 0.6);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  flex-wrap: wrap;
}

.quick-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.q-cmd {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.q-cmd:hover {
  background: rgba(0, 242, 254, 0.15);
  border-color: var(--cyan);
}

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

.arsenal-category {
  padding: 32px 28px;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.cat-icon {
  font-size: 1.6rem;
}

.category-header h3 {
  font-size: 1.25rem;
}

.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 6px;
}

.skill-name {
  color: var(--text-secondary);
  font-weight: 500;
}

.skill-level {
  font-family: var(--font-mono);
  color: var(--cyan);
}

.skill-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: var(--gradient-vibe);
  border-radius: var(--radius-full);
  box-shadow: 0 0 8px rgba(0, 242, 254, 0.5);
  transition: width 1s ease;
}

/* Contact Section */
.contact-card {
  padding: 60px 40px;
  max-width: 800px;
  margin: 0 auto;
}

.contact-title {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.contact-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact-methods {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.contact-item:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.copy-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: rgba(0, 242, 254, 0.15);
  color: var(--cyan);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* 3D Particle HUD Controller */
.particle-hud {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 240px;
  z-index: 100;
  padding: 16px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  transition: var(--transition-smooth);
}

.hud-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.hud-dot {
  width: 6px;
  height: 6px;
  background-color: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--cyan);
  display: inline-block;
}

.hud-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.1rem;
  cursor: pointer;
}

.hud-control {
  margin-bottom: 12px;
}

.hud-control label {
  display: block;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.hud-modes {
  display: flex;
  gap: 4px;
}

.hud-mode-btn {
  flex: 1;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  padding: 4px 6px;
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-mono);
}

.hud-mode-btn.active {
  background: var(--cyan);
  color: #000;
  font-weight: 700;
  border-color: var(--cyan);
}

input[type=range] {
  width: 100%;
  accent-color: var(--cyan);
}

.w-100 { width: 100%; }

/* Footer */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 32px 0;
  position: relative;
  z-index: 10;
  background: rgba(7, 9, 19, 0.9);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

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

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-primary);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.badge-status {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--emerald);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.back-to-top {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.back-to-top:hover {
  background: var(--cyan);
  color: #000;
  border-color: var(--cyan);
  transform: translateY(-2px);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-title { font-size: 3rem; }
  .philosophy-grid, .projects-grid, .arsenal-grid {
    grid-template-columns: 1fr;
  }
  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu { display: none; }
  .hero-title { font-size: 2.3rem; }
  .hero-subtitle { font-size: 1.05rem; }
  .particle-hud { display: none; }
  .section { padding: 80px 0; }
}