/* ==========================================================================
   YEONSU.LOL — 3D Particle & Vibe Coding Design System
   Modern Glassmorphism, Cyberpunk Neons, Micro-animations
   ========================================================================== */

/* --- CSS Variables / Design Tokens --- */
:root {
  --bg-primary: #060813;
  --bg-secondary: #0a0d1d;
  --bg-card: rgba(16, 21, 40, 0.65);
  --bg-card-hover: rgba(23, 31, 58, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-card: rgba(14, 18, 36, 0.72);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 242, 254, 0.25);
  --border-card-hover: rgba(0, 242, 254, 0.45);

  --color-cyan: #00f2fe;
  --color-violet: #7928ca;
  --color-pink: #ff0080;
  --color-purple: #9d4edd;
  --color-emerald: #00ff88;
  --color-gold: #ffaa00;

  --text-main: #f3f4f6;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --gradient-primary: linear-gradient(135deg, #00f2fe 0%, #7928ca 50%, #ff0080 100%);
  --gradient-text: linear-gradient(135deg, #00f2fe 10%, #9d4edd 50%, #ff0080 90%);
  --gradient-card-glow: radial-gradient(circle at 50% 0%, rgba(0, 242, 254, 0.15) 0%, transparent 70%);

  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', var(--font-sans);
  --font-mono: 'JetBrains Mono', monospace;

  --blur-card: blur(20px);
  --blur-nav: blur(16px);
  --shadow-neon: 0 0 25px rgba(0, 242, 254, 0.25);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.6), 0 0 1px 1px var(--border-color);

  --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: all 0.35s var(--ease-smooth);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-main);
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  line-height: 1.65;
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- 3D Particle WebGL Canvas --- */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none; /* Mouse handled by window listeners */
}

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

.glow-1 {
  top: 10%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.4) 0%, transparent 70%);
}

.glow-2 {
  bottom: 20%;
  right: -5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(121, 40, 202, 0.4) 0%, transparent 70%);
  animation-delay: -7s;
}

.glow-3 {
  top: 60%;
  left: 30%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 0, 128, 0.25) 0%, transparent 70%);
  animation-delay: -12s;
}

@keyframes floatAmbient {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 30px) scale(1.1); }
  100% { transform: translate(-30px, 50px) scale(0.95); }
}

/* --- Typography & Gradients --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #ffffff;
}

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

.text-glow {
  filter: drop-shadow(0 0 20px rgba(0, 242, 254, 0.4));
}

.text-cyan {
  color: var(--color-cyan) !important;
}

/* --- Particle Control HUD --- */
.particle-hud {
  position: fixed;
  top: 90px;
  right: 24px;
  z-index: 100;
  width: 280px;
  background: rgba(10, 14, 30, 0.82);
  border: 1px solid var(--border-color);
  backdrop-filter: var(--blur-card);
  -webkit-backdrop-filter: var(--blur-card);
  border-radius: 16px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5), 0 0 15px rgba(0, 242, 254, 0.15);
  transition: var(--transition-normal);
  overflow: hidden;
}

.particle-hud.minimized .hud-body {
  display: none;
}

.hud-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.02);
}

.hud-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-cyan);
}

.hud-indicator {
  width: 7px;
  height: 7px;
  background: var(--color-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-cyan);
  animation: pulseDot 2s infinite;
}

.hud-toggle-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: var(--transition-normal);
}

.hud-toggle-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.08);
}

.hud-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hud-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hud-label {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hud-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.hud-mode-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-normal);
}

.hud-mode-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border-color: rgba(0, 242, 254, 0.3);
}

.hud-mode-btn.active {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.2), rgba(121, 40, 202, 0.25));
  border-color: var(--color-cyan);
  color: #ffffff;
  box-shadow: 0 0 12px rgba(0, 242, 254, 0.3);
}

.hud-themes {
  display: flex;
  gap: 8px;
}

.hud-theme-pill {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s;
}

.hud-theme-pill:hover {
  transform: scale(1.15);
}

.hud-theme-pill.active {
  border-color: #ffffff;
  transform: scale(1.18);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.theme-cyber {
  background: linear-gradient(135deg, #00f2fe, #7928ca);
}

.theme-solar {
  background: linear-gradient(135deg, #ffaa00, #ff0055);
}

.theme-matrix {
  background: linear-gradient(135deg, #00ff88, #0099ff);
}

.theme-amethyst {
  background: linear-gradient(135deg, #c084fc, #f43f5e);
}

.hud-slider-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.hud-val {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-cyan);
}

.hud-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  outline: none;
}

.hud-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-cyan);
  cursor: pointer;
  box-shadow: 0 0 8px var(--color-cyan);
  transition: transform 0.15s;
}

.hud-slider::-webkit-slider-thumb:hover {
  transform: scale(1.3);
}

.hud-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 9px;
  background: linear-gradient(135deg, rgba(255, 0, 128, 0.2), rgba(121, 40, 202, 0.3));
  border: 1px solid rgba(255, 0, 128, 0.4);
  border-radius: 8px;
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
}

.hud-action-btn:hover {
  background: linear-gradient(135deg, rgba(255, 0, 128, 0.35), rgba(121, 40, 202, 0.5));
  border-color: var(--color-pink);
  box-shadow: 0 0 15px rgba(255, 0, 128, 0.4);
  transform: translateY(-1px);
}

/* --- Header & Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 90;
  padding: 16px 32px;
  background: rgba(6, 8, 19, 0.65);
  backdrop-filter: var(--blur-nav);
  -webkit-backdrop-filter: var(--blur-nav);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.nav-container {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-logo {
  text-decoration: none;
  display: flex;
  align-items: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: #ffffff;
}

.logo-bracket {
  color: var(--color-cyan);
  font-weight: 400;
}

.logo-text {
  margin-left: 3px;
  background: linear-gradient(135deg, #ffffff, #d1d5db);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.logo-domain {
  color: var(--color-cyan);
}

.server-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid rgba(0, 255, 136, 0.25);
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-emerald);
}

.status-pulse {
  width: 6px;
  height: 6px;
  background: var(--color-emerald);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-emerald);
  animation: pulseDot 1.5s infinite;
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

.main-nav .nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: var(--transition-normal);
  position: relative;
  padding: 4px 0;
}

.nav-link:hover {
  color: #ffffff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 8px 18px !important;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: 20px;
  color: var(--color-cyan) !important;
}

.nav-cta:hover {
  background: var(--color-cyan);
  color: var(--bg-primary) !important;
  box-shadow: var(--shadow-neon);
}

.nav-cta::after {
  display: none;
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 1.3rem;
  cursor: pointer;
}

/* --- Page Main & Sections --- */
.page-main {
  position: relative;
  z-index: 10;
  width: 100%;
}

.section {
  padding: 120px 24px;
  max-width: 1300px;
  margin: 0 auto;
}

.section-container {
  width: 100%;
}

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

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

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-cyan);
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.2);
  padding: 4px 12px;
  border-radius: 12px;
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  max-width: 680px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* --- Hero Section --- */
.hero-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 24px 80px;
  position: relative;
}

.hero-content {
  max-width: 960px;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 30px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-main);
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.hero-title {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.title-line {
  display: block;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 720px;
  margin-bottom: 38px;
  line-height: 1.7;
}

.hero-subtitle strong {
  color: #ffffff;
}

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

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 12px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  border: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 35px rgba(0, 242, 254, 0.55);
}

.btn-pulse-monitor {
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.15) 0%, rgba(0, 242, 254, 0.2) 100%);
  border: 1px solid rgba(0, 255, 136, 0.6);
  color: #ffffff;
  box-shadow: 0 0 25px rgba(0, 255, 136, 0.3), inset 0 0 15px rgba(0, 255, 136, 0.1);
  position: relative;
  overflow: hidden;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.btn-pulse-monitor:hover {
  transform: translateY(-3px) scale(1.03);
  border-color: #00ff88;
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.3) 0%, rgba(0, 242, 254, 0.35) 100%);
  box-shadow: 0 0 35px rgba(0, 255, 136, 0.5), 0 0 20px rgba(0, 242, 254, 0.4);
}

.pulse-indicator {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #00ff88;
  box-shadow: 0 0 10px #00ff88;
  animation: pulseDot 1.4s infinite;
  display: inline-block;
}

.server-status-link {
  text-decoration: none;
  display: block;
}

.server-status-link:hover .server-status {
  border-color: var(--neon-emerald);
  background: rgba(0, 255, 136, 0.16);
  box-shadow: 0 0 15px rgba(0, 255, 136, 0.3);
  transform: translateY(-1px);
}

.nav-monitor-link {
  color: #00ff88 !important;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-glass {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: #ffffff;
  backdrop-filter: blur(10px);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

/* --- Hero Metrics Strip --- */
.hero-metrics {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 18px 36px;
  background: rgba(14, 18, 36, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  backdrop-filter: var(--blur-card);
  -webkit-backdrop-filter: var(--blur-card);
  max-width: 100%;
  flex-wrap: wrap;
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.metric-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
}

.metric-num .unit {
  color: var(--color-cyan);
  font-size: 1.2rem;
  margin-left: 2px;
}

.metric-desc {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 500;
  margin-top: 4px;
}

.metric-divider {
  width: 1px;
  height: 36px;
  background: var(--border-color);
}

/* --- Scroll Indicator --- */
.scroll-indicator {
  position: absolute;
  bottom: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  opacity: 0.7;
}

.mouse-icon {
  width: 20px;
  height: 32px;
  border: 2px solid var(--text-dim);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.mouse-icon .wheel {
  width: 3px;
  height: 6px;
  background: var(--color-cyan);
  border-radius: 2px;
  animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* --- Bento Grid (Philosophy) --- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bento-card {
  position: relative;
  background: var(--bg-glass-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 32px;
  backdrop-filter: var(--blur-card);
  -webkit-backdrop-filter: var(--blur-card);
  transition: var(--transition-normal);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.bento-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-card-hover);
  box-shadow: var(--shadow-card), 0 0 20px rgba(0, 242, 254, 0.15);
}

.card-glow {
  position: absolute;
  top: -60px;
  right: -60px;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.card-featured {
  grid-column: span 2;
}

.card-wide {
  grid-column: span 3;
}

.card-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(121, 40, 202, 0.2));
  border: 1px solid rgba(0, 242, 254, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cyan);
  font-size: 1.25rem;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: #ffffff;
}

.card-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 24px;
  flex-grow: 1;
}

.card-footer-pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 6px 14px;
  border-radius: 20px;
  background: rgba(121, 40, 202, 0.15);
  border: 1px solid rgba(121, 40, 202, 0.35);
  color: #c084fc;
  align-self: flex-start;
}

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

.tech-chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.card-flex-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  width: 100%;
}

.card-flex-content {
  flex: 1;
}

.cloud-badge-group {
  display: flex;
  gap: 16px;
}

.cloud-stat {
  padding: 16px 24px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  text-align: center;
}

.stat-title {
  display: block;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
  margin-bottom: 4px;
}

.stat-val {
  display: block;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
}

/* --- About Section --- */
.about-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: center;
}

.about-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.profile-orb {
  width: 220px;
  height: 220px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orb-core {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00f2fe, #7928ca);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: #ffffff;
  box-shadow: 0 0 50px rgba(0, 242, 254, 0.5);
  z-index: 2;
}

.orb-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(0, 242, 254, 0.4);
}

.ring-1 {
  width: 170px;
  height: 170px;
  animation: spinSlow 20s linear infinite;
}

.ring-2 {
  width: 220px;
  height: 220px;
  border-color: rgba(255, 0, 128, 0.3);
  animation: spinSlow 30s linear infinite reverse;
}

@keyframes spinSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.profile-quote-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 24px;
  border-radius: 16px;
  backdrop-filter: var(--blur-card);
  position: relative;
}

.quote-icon {
  font-size: 1.5rem;
  color: var(--color-cyan);
  opacity: 0.4;
  margin-bottom: 8px;
}

.profile-quote-card p {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--text-main);
  margin-bottom: 10px;
}

.quote-author {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--color-cyan);
}

.lead-p {
  font-size: 1.25rem;
  color: #ffffff;
  margin-bottom: 16px;
}

.body-p {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 32px 0;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.hl-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cyan);
  font-size: 0.95rem;
  flex-shrink: 0;
}

.highlight-item h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.highlight-item p {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.about-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

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

.project-card {
  perspective: 1000px;
  cursor: pointer;
}

.project-card-inner {
  position: relative;
  background: var(--bg-glass-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  overflow: hidden;
  backdrop-filter: var(--blur-card);
  -webkit-backdrop-filter: var(--blur-card);
  transition: transform 0.4s var(--ease-smooth), border-color 0.4s, box-shadow 0.4s;
  display: flex;
  flex-direction: column;
}

.project-card:hover .project-card-inner {
  transform: translateY(-8px) scale(1.01);
  border-color: var(--border-card-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 242, 254, 0.2);
}

.card-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #ffffff;
  z-index: 5;
  backdrop-filter: blur(8px);
}

.project-banner {
  height: 180px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.banner-1 {
  background: linear-gradient(135deg, #091a3e, #1a0836, #2d0b28);
}
.banner-2 {
  background: linear-gradient(135deg, #0b222d, #081d3d, #140d33);
}
.banner-3 {
  background: linear-gradient(135deg, #1f0b3d, #0d2836, #091e1d);
}
.banner-4 {
  background: linear-gradient(135deg, #2d0b1f, #1b0933, #092138);
}

.banner-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, transparent 20%, rgba(10, 14, 30, 0.8) 100%);
}

.project-icon-large {
  font-size: 3.5rem;
  color: var(--color-cyan);
  opacity: 0.7;
  filter: drop-shadow(0 0 20px var(--color-cyan));
  transition: transform 0.4s var(--ease-smooth);
}

.project-card:hover .project-icon-large {
  transform: scale(1.15) rotate(5deg);
  opacity: 1;
}

.project-content {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(0, 242, 254, 0.08);
  color: var(--color-cyan);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.project-title {
  font-size: 1.45rem;
  margin-bottom: 10px;
  color: #ffffff;
}

.project-summary {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
  flex-grow: 1;
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
  font-size: 0.8rem;
}

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

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

.open-modal-link {
  color: var(--color-cyan);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: transform 0.2s;
}

.project-card:hover .open-modal-link {
  transform: translateX(4px);
}

/* --- Skills Matrix Section --- */
.skills-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.skill-category-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 32px 28px;
  backdrop-filter: var(--blur-card);
  -webkit-backdrop-filter: var(--blur-card);
  transition: var(--transition-normal);
}

.skill-category-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-card-hover);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
}

.cat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
}

.cat-icon {
  font-size: 1.3rem;
  color: var(--color-cyan);
}

.cat-header h3 {
  font-size: 1.15rem;
}

.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skill-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
}

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

.skill-level {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-cyan);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

/* --- Contact Section --- */
.contact-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 56px 48px;
  backdrop-filter: var(--blur-card);
  -webkit-backdrop-filter: var(--blur-card);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
  margin-top: 48px;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.info-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.info-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.email-copy-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 12px 18px;
}

.email-address {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-cyan);
}

.copy-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  position: relative;
  font-size: 1.1rem;
  transition: color 0.2s;
}

.copy-btn:hover {
  color: #ffffff;
}

.copy-tooltip {
  position: absolute;
  bottom: -24px;
  right: 0;
  background: #000;
  color: #fff;
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.copy-btn:hover .copy-tooltip {
  opacity: 1;
}

.node-status-box {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.status-line {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}

.dot-green { width: 8px; height: 8px; border-radius: 50%; background: #00ff88; box-shadow: 0 0 8px #00ff88; }
.dot-cyan { width: 8px; height: 8px; border-radius: 50%; background: #00f2fe; box-shadow: 0 0 8px #00f2fe; }
.dot-purple { width: 8px; height: 8px; border-radius: 50%; background: #9d4edd; box-shadow: 0 0 8px #9d4edd; }

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

.social-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 1.1rem;
  transition: var(--transition-normal);
}

.social-icon:hover {
  color: #ffffff;
  background: rgba(0, 242, 254, 0.15);
  border-color: var(--color-cyan);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.3);
  transform: translateY(-2px);
}

/* --- Form Styles --- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.form-input {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 14px 16px;
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-normal);
}

.form-input:focus {
  border-color: var(--color-cyan);
  background: rgba(0, 242, 254, 0.03);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
}

.form-input::placeholder {
  color: var(--text-dim);
}

/* --- Project Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 6, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

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

.modal-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  max-width: 760px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.8), 0 0 30px rgba(0, 242, 254, 0.2);
  transform: scale(0.92);
  transition: transform 0.3s var(--ease-smooth);
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: var(--transition-normal);
}

.modal-close-btn:hover {
  background: rgba(255, 0, 128, 0.2);
  border-color: var(--color-pink);
  transform: rotate(90deg);
}

.modal-body {
  padding: 40px;
}

.modal-header-banner {
  margin-bottom: 24px;
}

.modal-tech-stack {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 16px 0 24px;
}

.modal-tech-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 12px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  color: var(--color-cyan);
  border-radius: 6px;
}

.modal-desc-p {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
  font-size: 1rem;
}

.modal-arch-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 28px;
}

.modal-arch-box h4 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-emerald);
  margin-bottom: 12px;
}

.modal-arch-box pre {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #e2e8f0;
  overflow-x: auto;
  line-height: 1.5;
}

/* --- Toast Notification --- */
.toast-notification {
  position: fixed;
  bottom: 32px;
  right: 32px;
  background: rgba(10, 14, 30, 0.95);
  border: 1px solid var(--color-emerald);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px rgba(0, 255, 136, 0.3);
  padding: 14px 22px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #ffffff;
  font-size: 0.9rem;
  z-index: 1100;
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.4s var(--ease-smooth), opacity 0.4s;
  pointer-events: none;
}

.toast-notification.active {
  transform: translateY(0);
  opacity: 1;
}

.toast-icon {
  color: var(--color-emerald);
  font-size: 1.2rem;
}

/* --- Site Footer --- */
.site-footer {
  position: relative;
  z-index: 10;
  border-top: 1px solid var(--border-color);
  padding: 32px 24px;
  background: rgba(6, 8, 19, 0.8);
  backdrop-filter: blur(10px);
}

.footer-container {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

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

.footer-brand {
  font-family: var(--font-display);
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.05em;
}

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

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

.live-clock {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-cyan);
}

.footer-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-muted);
}

/* --- Responsive Media Queries --- */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: 1fr 1fr;
  }
  .card-featured {
    grid-column: span 2;
  }
  .card-wide {
    grid-column: span 2;
  }
  .card-flex-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .about-wrapper {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .skills-columns {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 14px 20px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(6, 8, 19, 0.98);
    border-bottom: 1px solid var(--border-color);
    padding: 24px;
  }
  .main-nav.open {
    display: block;
  }
  .main-nav .nav-list {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }
  .mobile-menu-btn {
    display: block;
  }
  .server-status {
    display: none;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .hero-metrics {
    gap: 20px;
    padding: 16px;
  }
  .metric-divider {
    display: none;
  }
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .card-featured, .card-wide {
    grid-column: span 1;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .particle-hud {
    top: auto;
    bottom: 20px;
    right: 20px;
    width: calc(100vw - 40px);
    max-width: 320px;
  }
  .contact-card {
    padding: 32px 20px;
  }
}