/* ==========================================================================
   Cyber/Tech Design System - Deep Navy & Neon Cyan Palette
   Manitchanan Pislaengam - SPU ICT Portfolio
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Prompt:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

:root {
  --font-tech: 'Space Grotesk', 'Chakra Petch', sans-serif;
  --font-body: 'Prompt', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Cyber Deep Navy Dark Mode (Default) */
  --bg-primary: #070c18;
  --bg-secondary: #0b1528;
  --bg-card: rgba(14, 26, 50, 0.75);
  --bg-card-hover: rgba(20, 36, 68, 0.85);
  --border-cyber: rgba(0, 240, 255, 0.22);
  --border-cyber-hover: rgba(0, 240, 255, 0.65);
  --neon-cyan: #00f0ff;
  --neon-blue: #3b82f6;
  --neon-purple: #8b5cf6;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.35);
  --glow-blue: 0 0 25px rgba(59, 130, 246, 0.35);
  --grid-color: rgba(0, 240, 255, 0.04);
}

.light-theme {
  --bg-primary: #f4f7fb;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: rgba(248, 250, 252, 1);
  --border-cyber: rgba(14, 116, 144, 0.2);
  --border-cyber-hover: rgba(14, 116, 144, 0.6);
  --neon-cyan: #0284c7;
  --neon-blue: #2563eb;
  --neon-purple: #7c3aed;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --glow-cyan: 0 4px 15px rgba(2, 132, 199, 0.18);
  --glow-blue: 0 4px 20px rgba(37, 99, 235, 0.18);
  --grid-color: rgba(2, 132, 199, 0.04);
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

.font-tech {
  font-family: var(--font-tech);
}

/* Cyber Matrix Background Grid */
.cyber-grid {
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
}

/* Cyber Glow Utilities */
.glow-cyan {
  box-shadow: var(--glow-cyan);
}

.glow-blue {
  box-shadow: var(--glow-blue);
}

.glow-text-cyan {
  text-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
}

.glow-border-hover:hover {
  border-color: var(--border-cyber-hover);
  box-shadow: var(--glow-cyan);
}

/* Glassmorphic Cyber Cards */
.cyber-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-cyber);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.cyber-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 10px;
  height: 10px;
  border-top: 2px solid var(--neon-cyan);
  border-left: 2px solid var(--neon-cyan);
  opacity: 0.6;
  pointer-events: none;
}

.cyber-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  border-bottom: 2px solid var(--neon-cyan);
  border-right: 2px solid var(--neon-cyan);
  opacity: 0.6;
  pointer-events: none;
}

.cyber-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-cyber-hover);
  box-shadow: var(--glow-cyan);
  transform: translateY(-3px);
}

/* Cyber Buttons */
.btn-cyber-primary {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(59, 130, 246, 0.25));
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-tech);
  font-weight: 600;
  position: relative;
  overflow: hidden;
  transition: all 0.25s ease;
}

.btn-cyber-primary:hover {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-blue));
  color: #070c18;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
  transform: scale(1.02);
}

.btn-cyber-secondary {
  background: rgba(14, 26, 50, 0.6);
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--text-primary);
  font-family: var(--font-tech);
  transition: all 0.2s ease;
}

.btn-cyber-secondary:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.1);
}

/* Pulsing Online Badge */
@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 0; }
  100% { transform: scale(0.95); opacity: 0; }
}

.pulse-dot::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border-radius: 9999px;
  background: inherit;
  animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* High-tech Timeline Line */
.timeline-line {
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--neon-cyan), var(--neon-blue), transparent);
}

@media (min-width: 768px) {
  .timeline-line-center {
    left: 50%;
    transform: translateX(-50%);
  }
}

/* Custom Cyber Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #070c18;
}

.light-theme ::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #1e3a5f;
  border-radius: 4px;
  border: 1px solid rgba(0, 240, 255, 0.3);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neon-cyan);
}

/* Modal Backdrop */
.modal-backdrop {
  background: rgba(4, 8, 18, 0.85);
  backdrop-filter: blur(8px);
}

/* Badge cyber style */
.cyber-badge {
  font-family: var(--font-tech);
  border: 1px solid rgba(0, 240, 255, 0.25);
  background: rgba(0, 240, 255, 0.08);
  color: var(--neon-cyan);
}