/* ============================================================
   Modern Dark Theme (Kilo Inspired)  —  Prediction Page
   ============================================================ */

:root {
  --bg-dark: #0a0a0a;
  --bg-card: #141414;
  --bg-input: #1f1f1f;
  --text-white: #ffffff;
  --text-gray: #a1a1a1;
  --accent-blue: #3b82f6;
  --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --border-color: rgba(255, 255, 255, 0.08);
  --font-main: 'Inter', sans-serif;
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Background Effects */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
}

.bg-orbs {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.1;
  animation: orbDrift 25s infinite alternate;
}

.orb-1 { width: 600px; height: 600px; background: var(--accent-blue); top: -200px; left: -100px; }
.orb-2 { width: 500px; height: 500px; background: #8b5cf6; bottom: -100px; right: -100px; }
.orb-3 { width: 300px; height: 300px; background: #ec4899; top: 40%; left: 50%; opacity: 0.05; }

@keyframes orbDrift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(40px, -40px) scale(1.1); }
}

/* Navigation */
.topnav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 4rem;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-white);
}

.brand-logo { color: var(--accent-blue); }

.nav-center { display: flex; gap: 2.5rem; }

.nav-link {
  text-decoration: none;
  color: var(--text-gray);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover { color: var(--text-white); }

.nav-cta {
  background: var(--text-white);
  color: var(--bg-dark);
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  transition: var(--transition);
}

/* Page Layout */
.page-wrapper {
  max-width: 1200px;
  margin: 4rem auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 6rem;
  align-items: start;
}

/* Hero Content */
.hero-pane { position: sticky; top: 8rem; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 50px;
  font-size: 0.7rem;
  color: var(--accent-blue);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
}

.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-blue); box-shadow: 0 0 8px var(--accent-blue); }

.hero-title {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

.hero-title em { font-style: normal; color: var(--accent-blue); }

.hero-description {
  font-size: 1.15rem;
  color: var(--text-gray);
  margin-bottom: 3rem;
  max-width: 400px;
}

.hero-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero-features li {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-gray);
  font-size: 0.95rem;
}

.feat-icon { color: var(--accent-blue); font-size: 1.2rem; }

/* Form Container */
.form-pane {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 3rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.form-header { margin-bottom: 3rem; }

.form-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.form-subtitle { color: var(--text-gray); font-size: 0.9rem; }

/* Form Elements */
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.field-group--full { grid-column: span 2; }

.field-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-gray);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.field-input, .field-select {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  color: var(--text-white);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
  width: 100%;
}

.field-input:focus, .field-select:focus {
  outline: none;
  border-color: var(--accent-blue);
  background: #252525;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

.field-input.is-invalid, .field-select.is-invalid {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

.field-error {
  font-size: 0.75rem;
  color: #ef4444;
  font-weight: 500;
  min-height: 1rem;
}

.select-wrapper { position: relative; }
.select-arrow {
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-gray);
  pointer-events: none;
}

/* Button */
.submit-btn {
  width: 100%;
  background: var(--text-white);
  border: none;
  padding: 1.25rem;
  border-radius: 14px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--bg-dark);
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
  margin-top: 1rem;
}

.submit-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(255, 255, 255, 0.15);
}

.submit-btn:active { transform: translateY(-2px); }

.submit-btn.is-loading {
  background: #e5e5e5;
  cursor: wait;
}

.submit-btn.is-loading .btn-text { opacity: 0; }
.submit-btn.is-loading .btn-spinner {
  position: absolute;
  width: 24px;
  height: 24px;
  border: 3px solid rgba(0, 0, 0, 0.1);
  border-top-color: var(--bg-dark);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Result Card */
.result-card {
  margin-top: 3rem;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
  padding: 2.5rem;
  border-radius: 24px;
  text-align: center;
  animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.score-num {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.3));
}

.result-label {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  opacity: 0.9;
}

.result-score {
  font-family: var(--font-display);
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 1rem;
}

.result-denom { font-size: 1.5rem; opacity: 0.6; }

.result-note {
  font-size: 1rem;
  font-weight: 500;
  opacity: 0.9;
}

.result-card--mobile { display: none; }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Footer */
.site-footer {
  padding: 4rem 2rem;
  text-align: center;
  border-top: 1px solid var(--border-color);
  color: var(--text-gray);
  font-size: 0.9rem;
}

.site-footer a { color: var(--text-white); text-decoration: none; }

/* Responsive */
@media (max-width: 1024px) {
  .page-wrapper { grid-template-columns: 1fr; gap: 4rem; }
  .hero-pane { position: static; text-align: center; }
  .hero-description { margin: 0 auto 3rem; }
  .hero-features { align-items: center; }
  .topnav { padding: 1.25rem 2rem; }
}

@media (max-width: 768px) {
  .hero-title { font-size: 3rem; }
  .nav-center { display: none; }
  .field-row { grid-template-columns: 1fr; }
  .form-pane { padding: 2rem; }
}