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

:root {
  --bg: #000000;
  --bg-subtle: #121212;
  --card: #1C1C1E;
  --card-hover: #2C2C2E;
  --text: #FFFFFF;
  --text-muted: #8E8E93;
  --text-dark: #000000;

  /* Brand Colors */
  --accent: #D0FF00;
  /* Nike Volt */
  --accent-glow: rgba(208, 255, 0, 0.5);
  --accent-dim: rgba(208, 255, 0, 0.1);
  --secondary: #0A84FF;
  /* Electric Blue */

  /* Status */
  --success: #32D74B;
  --warning: #FFD60A;
  --danger: #FF453A;

  /* Layout */
  --radius: 24px;
  --radius-sm: 12px;
  --header-height: 90px;

  /* Font */
  --font-head: "Bebas Neue", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.backdrop {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 50% -20%, var(--accent-dim), transparent 60%),
    radial-gradient(circle at 90% 40%, rgba(10, 132, 255, 0.08), transparent 50%);
  z-index: -1;
  pointer-events: none;
}

/* Utilities */
.container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-volt {
  color: var(--accent);
}

.text-muted {
  color: var(--text-muted);
}

/* Typography */
h1,
h2,
h3,
h4 {
  font-family: var(--font-head);
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1;
  margin: 0;
}

h1 {
  font-size: 64px;
}

h2 {
  font-size: 48px;
}

h3 {
  font-size: 32px;
}

p {
  line-height: 1.6;
  margin: 0;
}

/* Components */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform 0.2s ease, background 0.2s ease;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  padding: 0 32px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--text-dark);
  box-shadow: 0 0 20px var(--accent-dim);
}

.btn-primary:hover {
  transform: scale(1.02);
  box-shadow: 0 0 30px var(--accent-glow);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover {
  border-color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.badge {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

.badge-volt {
  background: var(--accent-dim);
  color: var(--accent);
}

/* Forms */
.dropzone {
  border: 2px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  transition: all 0.2s ease;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.dropzone input {
  display: none;
}

.dropzone:hover,
.dropzone.active {
  border-color: var(--accent);
  background: rgba(208, 255, 0, 0.05);
}

select {
  appearance: none;
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text);
  padding: 16px;
  border-radius: var(--radius-sm);
  width: 100%;
  font-family: var(--font-body);
  font-size: 16px;
  cursor: pointer;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
}

.delay-1 {
  animation-delay: 0.1s;
}

.delay-2 {
  animation-delay: 0.2s;
}

.delay-3 {
  animation-delay: 0.3s;
}

/* Metrics */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
}

.metric-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.metric-val {
  font-family: var(--font-head);
  font-size: 28px;
  margin-bottom: 4px;
}

.metric-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

/* Score Ring */
.score-ring circle {
  transition: stroke-dashoffset 1s ease-out;
}