/* ==========================================================================
   jvibeschool.lol - Minimalist Design System with Blue Point Accents
   ========================================================================== */

:root {
  --bg-primary: #08080a;
  --bg-secondary: #0d0e14;
  --bg-card: rgba(255, 255, 255, 0.025);
  --bg-card-hover: rgba(255, 255, 255, 0.05);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(59, 130, 246, 0.35);

  /* Blue Point Color Palette */
  --accent-blue: #3b82f6;
  --accent-blue-hover: #2563eb;
  --accent-blue-glow: rgba(59, 130, 246, 0.35);
  --accent-blue-subtle: rgba(59, 130, 246, 0.12);

  --text-primary: #f5f6f8;
  --text-secondary: #9094a0;
  --text-muted: #525664;

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

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

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

/* Three.js Background Canvas */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* Ambient Blue Light Glow */
.ambient-glow {
  position: fixed;
  width: 650px;
  height: 650px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
  filter: blur(100px);
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
}

.app-container {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.navbar {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  max-width: 1080px;
  z-index: 100;
  background: rgba(12, 13, 18, 0.78);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.nav-brand .lucide {
  color: var(--accent-blue);
}

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

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-links a:hover {
  color: #ffffff;
}

.nav-links a.highlight-link {
  color: var(--accent-blue);
  font-weight: 600;
}

.nav-links a.highlight-link:hover {
  color: #60a5fa;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Particle Visual Mode Selector with Blue Accent */
.particle-modes {
  display: flex;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  padding: 3px;
  gap: 2px;
}

.mode-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all var(--transition-fast);
}

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

.mode-btn.active {
  background: var(--accent-blue);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 0 14px var(--accent-blue-glow);
}

/* ==========================================================================
   Hero Section: Domain ONLY
   ========================================================================== */
.hero-section {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
}

.hero-domain {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9.5vw, 7.6rem);
  font-weight: 800;
  letter-spacing: -2.5px;
  line-height: 1;
  color: #ffffff;
  text-rendering: optimizeLegibility;
  user-select: none;
}

.hero-domain .domain-dot {
  color: var(--accent-blue);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.hero-scroll-hint:hover {
  color: var(--accent-blue);
  transform: translateX(-50%) translateY(2px);
}

/* ==========================================================================
   Section Base
   ========================================================================== */
section {
  padding: 100px 0 60px;
}

.section-header {
  margin-bottom: 40px;
}

.section-tag {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.8px;
  color: #ffffff;
}

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

.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 34px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.project-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4), 0 0 20px rgba(59, 130, 246, 0.1);
}

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

.project-badge {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--accent-blue-subtle);
  color: var(--accent-blue);
  border: 1px solid rgba(59, 130, 246, 0.25);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.project-arrow {
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.project-card:hover .project-arrow {
  color: var(--accent-blue);
  transform: translate(2px, -2px);
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.project-tag {
  font-size: 0.76rem;
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  border-top: 1px solid var(--border-glass);
  padding-top: 16px;
  color: var(--accent-blue);
  font-size: 0.85rem;
  font-weight: 600;
  gap: 4px;
}

/* ==========================================================================
   Tech Stack
   ========================================================================== */
.tech-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.tech-group {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 26px;
}

.tech-group h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tech-group h3 .lucide {
  color: var(--accent-blue);
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  font-size: 0.84rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.tech-pill:hover {
  background: var(--accent-blue-subtle);
  border-color: rgba(59, 130, 246, 0.3);
  color: #ffffff;
}

/* ==========================================================================
   Console
   ========================================================================== */
.console-wrapper {
  max-width: 800px;
  margin: 0 auto;
  background: #090a0f;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.console-header {
  background: #0f1118;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-glass);
}

.console-dots {
  display: flex;
  gap: 7px;
}

.console-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

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

.console-body {
  padding: 20px;
  min-height: 220px;
  max-height: 300px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
}

.console-output {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.log-line {
  display: flex;
  gap: 10px;
}

.log-prefix {
  color: var(--accent-blue);
  user-select: none;
}

.log-ai {
  color: #ffffff;
  user-select: none;
}

.log-content {
  color: var(--text-secondary);
  word-break: break-word;
}

.console-input-bar {
  display: flex;
  align-items: center;
  padding: 12px 18px;
  background: #0c0d14;
  border-top: 1px solid var(--border-glass);
  gap: 10px;
}

.console-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: #ffffff;
}

.console-quick-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 6px 18px 12px;
  background: #0c0d14;
}

.quick-chip {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.quick-chip:hover {
  color: var(--accent-blue);
  border-color: rgba(59, 130, 246, 0.3);
}

/* ==========================================================================
   Project Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 5, 8, 0.85);
  backdrop-filter: blur(16px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  padding: 20px;
}

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

.modal-content {
  background: #0f1118;
  border: 1px solid var(--border-glass-hover);
  border-radius: var(--radius-lg);
  max-width: 620px;
  width: 100%;
  padding: 36px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.8);
  transform: scale(0.96);
  transition: transform var(--transition-normal);
  position: relative;
  max-height: 85vh;
  overflow-y: auto;
}

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

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.15);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer-section {
  padding: 80px 0 40px;
  border-top: 1px solid var(--border-glass);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 40px;
}

.btn-minimal {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--accent-blue);
  color: #ffffff;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 16px var(--accent-blue-glow);
  transition: background var(--transition-fast);
}

.btn-minimal:hover {
  background: var(--accent-blue-hover);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.04);
  color: #ffffff;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.88rem;
  border: 1px solid var(--border-glass);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--accent-blue);
  background: rgba(255, 255, 255, 0.08);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 0.82rem;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 24px;
}

/* Toast Alert */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: #10121a;
  border: 1px solid var(--accent-blue);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 15px var(--accent-blue-glow);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
}

.lucide {
  width: 18px;
  height: 18px;
  stroke-width: 1.75px;
  vertical-align: middle;
}

.lucide-sm {
  width: 14px;
  height: 14px;
  stroke-width: 1.75px;
  vertical-align: middle;
}

@media (max-width: 900px) {
  .projects-grid { grid-template-columns: 1fr; }
  .tech-container { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .navbar {
    top: 12px;
    width: calc(100% - 24px);
    padding: 8px 16px;
  }
  .nav-links { display: none; }
  .particle-modes .mode-btn:nth-child(n+3) { display: none; }
  .footer-top { flex-direction: column; align-items: flex-start; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}