@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700;800&display=swap');

:root {
  --bg-obsidian: #070b14;
  --bg-card: #0d1527;
  --bg-card-hover: #111c34;
  --border-subtle: #1e293b;
  --border-accent: rgba(56, 189, 248, 0.25);
  --cyan-glow: #38bdf8;
  --cyan-glow-dim: rgba(56, 189, 248, 0.15);
  --cyan-glow-bright: rgba(56, 189, 248, 0.5);
  --indigo-glow: #818cf8;
  --emerald-glow: #34d399;
  --amber-glow: #f59e0b;
}

* {
  box-sizing: border-box;
}

body {
  background-color: var(--bg-obsidian);
  color: #f1f5f9;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
  min-height: 100vh;
}

.font-mono {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* Background Cyber Grid */
.bg-grid-pattern {
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
}

.radial-glow-cyan {
  background: radial-gradient(circle at 50% 15%, rgba(56, 189, 248, 0.08) 0%, rgba(7, 11, 20, 0) 70%);
}

.radial-glow-center {
  background: radial-gradient(circle at center, rgba(56, 189, 248, 0.12) 0%, rgba(13, 21, 39, 0) 70%);
}

/* Glowing card borders and neon styles */
.card-cyber {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.card-cyber:hover {
  border-color: var(--border-accent);
  box-shadow: 0 4px 25px -4px rgba(56, 189, 248, 0.12);
}

.card-cyber-active {
  border-color: var(--cyan-glow);
  box-shadow: 0 0 25px rgba(56, 189, 248, 0.2);
}

/* Monospace Tabular Figures */
.tabular-nums {
  font-variant-numeric: tabular-nums;
}

/* Circular HUD Gauge */
.hud-circle-bg {
  stroke: #17233f;
  stroke-width: 6;
  fill: none;
}

.hud-circle-progress {
  stroke: var(--cyan-glow);
  stroke-width: 6;
  stroke-linecap: round;
  fill: none;
  transform: rotate(-90deg);
  transform-origin: center;
  transform-box: fill-box;
  transition: stroke-dashoffset 0.12s linear, stroke 0.3s ease;
  filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.6));
}

.hud-circle-progress.upload-mode {
  stroke: var(--indigo-glow);
  filter: drop-shadow(0 0 8px rgba(129, 140, 248, 0.6));
}

.hud-circle-progress.ping-mode {
  stroke: var(--emerald-glow);
  filter: drop-shadow(0 0 8px rgba(52, 211, 153, 0.6));
}

/* Pulsing radar ring */
@keyframes radar-pulse {
  0% {
    transform: scale(0.95);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.3;
  }
  100% {
    transform: scale(0.95);
    opacity: 0.8;
  }
}

.animate-radar {
  animation: radar-pulse 3s infinite ease-in-out;
}

/* Live Online Pill Animation */
@keyframes ping-slow {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  75%, 100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

.animate-ping-slow {
  animation: ping-slow 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

/* Cyber Button Glow */
.btn-start-hud {
  background: radial-gradient(circle at center, #102447 0%, #0c172d 100%);
  border: 1px solid rgba(56, 189, 248, 0.4);
  box-shadow: 0 0 30px rgba(56, 189, 248, 0.2), inset 0 0 20px rgba(56, 189, 248, 0.1);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-start-hud:hover:not(:disabled) {
  transform: scale(1.04);
  border-color: var(--cyan-glow);
  box-shadow: 0 0 45px rgba(56, 189, 248, 0.45), inset 0 0 25px rgba(56, 189, 248, 0.2);
}

.btn-start-hud:active:not(:disabled) {
  transform: scale(0.98);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: #070b14;
}

::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
  background: #38bdf8;
}

/* Dialog Styles */
dialog::backdrop {
  background: rgba(4, 7, 14, 0.85);
  backdrop-filter: blur(8px);
}

dialog[open] {
  animation: modal-fade-in 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes modal-fade-in {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}