/* css/base.css — Cyberpunk Blue Theme */

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Rajdhani', sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Design Tokens */
:root {
  --bg-deep: #03030a;
  --bg-panel: #080814;
  --bg-card: #0a0a18;
  --bg-card-hover: #0f0f25;
  --cyan: #00e5ff;
  --cyan-40: #00e5ff44;
  --cyan-15: #00e5ff1a;
  --cyan-08: #00e5ff0d;
  --magenta: #ff0080;
  --magenta-40: #ff008044;
  --magenta-15: #ff00801a;
  --yellow: #ffe600;
  --yellow-20: #ffe60033;
  --text-bright: #f0f4ff;
  --text-primary: #b0b8d8;
  --text-muted: #4a5278;
  --border-subtle: #ffffff08;
  --glow-cyan: 0 0 15px #00e5ff55, 0 0 60px #00e5ff15;
  --glow-magenta: 0 0 15px #ff008055, 0 0 60px #ff008015;
  --clip-corner: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  
  /* Fonts */
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;
  --font-mono: 'Share Tech Mono', monospace;
  
  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 60px;
  --space-2xl: 80px;
  
  /* Typography */
  --text-xs: 0.85rem;
  --text-sm: 0.95rem;
  --text-base: 1rem;
  --text-lg: 1.5rem;
  --text-xl: 2.5rem;
  --text-2xl: 3.5rem;
  
  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  
  /* Effects */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.2;
  color: var(--text-bright);
}

h1 { font-size: clamp(2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }

p { 
  font-size: var(--text-base); 
  line-height: 1.7; 
  color: var(--text-muted); 
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Section Spacing */
section {
  padding: var(--space-2xl) 0;
  position: relative;
  z-index: 1;
}

/* Section Headers */
.sec-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--magenta);
  letter-spacing: 0.45em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 1rem;
}

.sec-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 3rem);
  color: var(--text-bright);
  line-height: 1.1;
  text-transform: uppercase;
}

.sec-title .hl {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.sec-line {
  width: 60px; 
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  margin: 1.5rem 0 0;
}

.sec-sub {
  color: var(--text-muted);
  font-size: var(--text-base);
  max-width: 600px;
  margin-bottom: var(--space-lg);
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
  clip-path: var(--clip-corner);
}

.card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: #ffffff12;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), #0090b0);
  color: var(--bg-deep);
  box-shadow: var(--glow-cyan);
  clip-path: var(--clip-corner);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 35px #00e5ff77, 0 0 90px #00e5ff22;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--text-muted);
  clip-path: var(--clip-corner);
}

.btn-outline:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-3px);
}

.btn-magenta {
  background: linear-gradient(135deg, var(--magenta), #b3005a);
  color: #fff;
  box-shadow: var(--glow-magenta);
  clip-path: var(--clip-corner);
}

.btn-magenta:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 35px #ff008077;
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Scroll-reveal utility */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Utility */
.text-center { text-align: center; }
.text-cyan { color: var(--cyan); }
.text-magenta { color: var(--magenta); }

/* Skip Link (a11y) */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--cyan);
  color: var(--bg-deep);
  padding: 8px 16px;
  z-index: 1000;
  font-weight: 700;
}
.skip-link:focus { top: 0; }

/* Badge */
.badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  z-index: 5;
  clip-path: var(--clip-corner);
}

.badge-y {
  background: var(--yellow);
  color: var(--bg-deep);
}

.badge-g {
  background: var(--cyan);
  color: var(--bg-deep);
}

/* Placeholder for missing images */
.imgbox {
  position: relative;
  background: var(--bg-card);
  overflow: hidden;
}

.imgbox .ph {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Glass Effect */
.glass {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  clip-path: var(--clip-corner);
}

/* Back to Top */
.btt {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: var(--bg-card);
  border: 1px solid var(--cyan-40);
  color: var(--cyan);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  z-index: 100;
  clip-path: var(--clip-corner);
}

.btt.show {
  opacity: 1;
  pointer-events: auto;
}

.btt:hover {
  background: var(--cyan);
  color: var(--bg-deep);
  box-shadow: var(--glow-cyan);
}

/* Background Layers */
.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--cyan-08) 1px, transparent 1px),
    linear-gradient(90deg, var(--cyan-08) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none; z-index: 0;
}

.bg-glow {
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 15% 10%, #00e5ff06 0%, transparent 100%),
    radial-gradient(ellipse 50% 50% at 85% 85%, #ff008006 0%, transparent 100%);
  pointer-events: none; z-index: 0;
}

.scanlines {
  position: fixed; inset: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, #00000005 2px, #00000005 4px);
  pointer-events: none; z-index: 9998;
}

/* Loader */
.loader {
  position: fixed; inset: 0;
  background: var(--bg-deep);
  z-index: 10000;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.done { 
  opacity: 0; 
  visibility: hidden; 
  pointer-events: none; 
}

.loader-ring {
  width: 60px; height: 60px;
  border: 2px solid var(--cyan-15);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 1.5rem;
}

.loader-text {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 0.4em;
  animation: loaderPulse 1.2s ease-in-out infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes loaderPulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 1; } }

/* Custom Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--cyan-40); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--cyan); }

/* Responsive */
@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; gap: var(--space-md); }
  .grid-3 { grid-template-columns: 1fr; }
  section { padding: var(--space-xl) 0; }
}