/* ==========================================================================
   KHOOT VLTN - VOLTAN BRAND DESIGN SYSTEM
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  /* Voltan Corporate Brand Tokens (from colores-vltn.txt) */
  --vltn-primary: #3023AE;
  --vltn-emphasis: #FF2D55;
  --vltn-text: #3B4350;
  --vltn-bg: #F9F9F9;
  --vltn-card: #FFFFFF;
  --vltn-border-radius: 6px;

  /* Theme mappings */
  --bg-primary: #F9F9F9;
  --bg-card: #FFFFFF;
  --bg-card-border: #E2E8F0;
  --text-main: #3B4350;
  --text-muted: #64748B;
  --text-light: #FFFFFF;

  /* Kahoot answer buttons colors */
  --color-red: #FF2D55;         /* Voltan Emphasis Red/Pink */
  --color-blue: #3023AE;        /* Voltan Primary Indigo */
  --color-yellow: #EAB308;      /* Kahoot Circle Amber */
  --color-green: #16A34A;       /* Kahoot Square Emerald */

  /* Radius (Strictly 6px per brand spec) */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 6px;
  --radius-xl: 6px;
  --radius-full: 9999px;

  /* Typography */
  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(48, 35, 174, 0.05);
  --shadow-md: 0 4px 16px rgba(48, 35, 174, 0.08);
  --shadow-lg: 0 10px 25px rgba(48, 35, 174, 0.12);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-main);
  background-color: var(--vltn-bg);
  color: var(--vltn-text);
  min-height: 100vh;
  overflow-x: hidden;
  user-select: none;
  -webkit-font-smoothing: antialiased;
}

/* Brand Logo */
.brand-logo-img {
  height: 40px;
  max-width: 180px;
  object-fit: contain;
  vertical-align: middle;
}

/* Glass & Card panels */
.glass-panel {
  background: var(--vltn-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--vltn-border-radius);
  box-shadow: var(--shadow-md);
}

/* Buttons */
.btn {
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 1.05rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--vltn-border-radius);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--vltn-primary);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: #281d94;
  box-shadow: 0 6px 16px rgba(48, 35, 174, 0.35);
  transform: translateY(-1px);
}

.btn-emphasis {
  background: var(--vltn-emphasis);
  color: #FFFFFF;
}

.btn-emphasis:hover {
  background: #e62349;
  box-shadow: 0 6px 16px rgba(255, 45, 85, 0.35);
  transform: translateY(-1px);
}

.btn-green {
  background: #16A34A;
  color: #FFFFFF;
}

.btn-green:hover {
  background: #15803d;
  box-shadow: 0 6px 16px rgba(22, 163, 74, 0.3);
  transform: translateY(-1px);
}

.btn-outline {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: var(--vltn-text);
}

.btn-outline:hover {
  background: #F1F5F9;
  border-color: #94A3B8;
}

.btn-danger {
  background: #EF4444;
  color: #FFFFFF;
}

.btn-danger:hover {
  background: #DC2626;
}

/* Option Letter Badges */
.option-letter, .chart-letter, .editor-letter-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--vltn-border-radius);
  font-weight: 900;
  font-size: 1.3rem;
  color: #FFFFFF;
  flex-shrink: 0;
}

.editor-letter-tag {
  width: 28px;
  height: 28px;
  font-size: 1rem;
  background: var(--vltn-primary);
  border: none;
}

.chart-letter {
  font-size: 1.2rem;
  color: var(--vltn-text);
  background: #F1F5F9;
  border-color: #CBD5E1;
}

/* Animations */
@keyframes pulseGlow {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.04); opacity: 0.92; }
}

@keyframes bounceIn {
  0% { transform: scale(0.6); opacity: 0; }
  70% { transform: scale(1.05); opacity: 1; }
  100% { transform: scale(1); }
}

@keyframes slideUp {
  0% { transform: translateY(20px); opacity: 0; }
  100% { transform: translateY(0); opacity: 1; }
}

.animate-bounce-in {
  animation: bounceIn 0.35s ease-out forwards;
}

.animate-slide-up {
  animation: slideUp 0.3s ease-out forwards;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--vltn-border-radius);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.badge-purple {
  background: rgba(48, 35, 174, 0.08);
  border: 1px solid rgba(48, 35, 174, 0.25);
  color: var(--vltn-primary);
}

.badge-emphasis {
  background: rgba(255, 45, 85, 0.08);
  border: 1px solid rgba(255, 45, 85, 0.25);
  color: var(--vltn-emphasis);
}

.badge-gold {
  background: #FEF9C3;
  border: 1px solid #FDE047;
  color: #854D0E;
}