@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@500;700&family=JetBrains+Mono:wght@400;500;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ============================================================================
   1. CSS Variables & Theme Tokens
   ============================================================================ */
:root {
  /* Color Palette */
  --bg-void: #06070a;
  --bg-surface: #0c0f17;
  --bg-surface-elevated: #131826;
  --bg-glass: rgba(15, 20, 32, 0.7);

  --border-subtle: rgba(0, 243, 255, 0.12);
  --border-glow: rgba(0, 243, 255, 0.35);

  --accent-palantir: #00f3ff;
  --accent-palantir-glow: rgba(0, 243, 255, 0.25);
  --accent-sdk: #00ff9d;
  --accent-sdk-glow: rgba(0, 255, 157, 0.2);
  --accent-magic: #8b5cf6;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Typography */
  --font-heading: 'Cinzel', serif;
  --font-body: 'Space Grotesk', sans-serif;
  --font-code: 'JetBrains Mono', monospace;

  /* Layout */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --nav-height: 70px;
}

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

body {
  background-color: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-body);
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(0, 243, 255, 0.08) 0%, transparent 60%),
    radial-gradient(circle at 85% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-void);
}
::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-palantir);
}

/* ============================================================================
   2. Layout & Navigation Header
   ============================================================================ */
.navbar {
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-orb {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffffff, var(--accent-palantir) 50%, #000 100%);
  box-shadow: 0 0 12px var(--accent-palantir-glow);
  animation: pulse-glow 4s infinite alternate ease-in-out;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 2px;
  background: linear-gradient(135deg, #ffffff 30%, var(--accent-palantir));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-tabs {
  display: flex;
  gap: 0.5rem;
  background: rgba(0, 0, 0, 0.3);
  padding: 4px;
  border-radius: 30px;
  border: 1px solid var(--border-subtle);
}

.nav-tab {
  padding: 0.5rem 1.25rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.nav-tab:hover {
  color: var(--text-primary);
}

.nav-tab.active {
  background: var(--bg-surface-elevated);
  color: var(--accent-palantir);
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.2);
  border: 1px solid var(--border-glow);
}

/* ============================================================================
   3. Palantir Visual Explorer View
   ============================================================================ */
.palantir-container {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: calc(100vh - var(--nav-height));
}

.control-panel {
  background: var(--bg-surface);
  border-right: 1px solid rgba(0, 243, 255, 0.2);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  z-index: 10;
  position: relative;
  overflow: hidden;
  animation: palantir-pulse 6s ease-in-out infinite;
}

.control-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-palantir), transparent);
  animation: scanline 4s linear infinite;
}

.panel-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--accent-palantir);
  letter-spacing: 1px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.input-group label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.input-field {
  background: var(--bg-void);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-code);
  font-size: 0.85rem;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-field:focus {
  border-color: var(--accent-palantir);
  box-shadow: 0 0 10px var(--accent-palantir-glow);
}

.btn-cast {
  position: relative;
  background: linear-gradient(270deg, #00f3ff, #8b5cf6, #00ff9d, #00f3ff);
  background-size: 300% 300%;
  animation: arcane-shimmer 8s ease infinite;
  border: 1px solid rgba(0, 243, 255, 0.5);
  color: #06070a;
  font-family: var(--font-body);
  font-weight: 700;
  padding: 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 20px rgba(0, 243, 255, 0.3);
}

.btn-cast:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 35px rgba(0, 243, 255, 0.7), 0 0 10px rgba(139, 92, 246, 0.8);
  border-color: #ffffff;
}

.btn-cast:active {
  transform: translateY(1px) scale(0.98);
}

/* Secondary / Clear Button Styling Upgrade */
#btn-clear {
  background: rgba(6, 7, 10, 0.8) !important;
  border: 1px solid rgba(255, 255, 255, 0.15) !important;
  color: var(--text-secondary) !important;
  background-size: 100% 100% !important;
  animation: none !important;
}

#btn-clear:hover {
  border-color: #ef4444 !important;
  color: #ef4444 !important;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.4) !important;
}

.graph-viewport {
  position: relative;
  background-image: 
    radial-gradient(circle at 50% 50%, rgba(0, 243, 255, 0.04) 0%, transparent 60%),
    linear-gradient(rgba(0, 243, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 243, 255, 0.03) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px, 40px 40px;
  overflow: hidden;
}

/* ============================================================================
   4. Animations & FX
   ============================================================================ */
@keyframes pulse-glow {
  0% { box-shadow: 0 0 8px var(--accent-palantir-glow); }
  100% { box-shadow: 0 0 20px rgba(0, 243, 255, 0.5); }
}

@keyframes palantir-pulse {
  0% {
    box-shadow: inset 0 0 15px rgba(0, 243, 255, 0.05);
  }
  50% {
    box-shadow: inset 0 0 35px rgba(0, 243, 255, 0.15);
  }
  100% {
    box-shadow: inset 0 0 15px rgba(0, 243, 255, 0.05);
  }
}

@keyframes arcane-shimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes scanline {
  0% { left: -100%; }
  100% { left: 100%; }
}