/* ═══════════════════════════════════════════════════════════════
   PROTOCOLO ANSIEDAD 21 DÍAS - ESTILOS GLOBALES
   Dark Tech Premium Design System
   ═══════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────
   CUSTOM PROPERTIES (CSS Variables)
   ───────────────────────────────────────────────────────────── */

:root {
  /* Backgrounds */
  --bg-primary: #0a0e27;
  --bg-secondary: #1a1f3a;
  --bg-card: #151a21;
  
  /* Neones */
  --neon-cyan: #00fff9;
  --neon-magenta: #ff006e;
  --neon-lime: #c4ff61;
  
  /* Texto */
  --text-primary: #e8ecf2;
  --text-muted: #8b95a7;
  
  /* Efectos */
  --glass-overlay: rgba(255, 255, 255, 0.05);
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.4);
  --radius: 16px;
  --radius-small: 8px;
  --glow-cyan: 0 0 20px rgba(0, 255, 249, 0.6);
  --glow-magenta: 0 0 20px rgba(255, 0, 110, 0.6);
  --glow-lime: 0 0 20px rgba(196, 255, 97, 0.6);
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.6s ease;
}

/* ─────────────────────────────────────────────────────────────
   RESET & BASE
   ───────────────────────────────────────────────────────────── */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Gradientes de fondo con blur */
body::before {
  content: '';
  position: fixed;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,255,249,0.15) 0%, transparent 70%);
  top: -300px;
  right: -300px;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,0,110,0.15) 0%, transparent 70%);
  bottom: -250px;
  left: -250px;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

/* Asegurar que el contenido esté sobre los gradientes */
main,
.container,
.wrapper {
  position: relative;
  z-index: 1;
}

/* ─────────────────────────────────────────────────────────────
   TIPOGRAFÍA
   ───────────────────────────────────────────────────────────── */

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

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.25rem;
  font-weight: 700;
}

h3 {
  font-size: 1.75rem;
  font-weight: 600;
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

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

.text-center {
  text-align: center;
}

/* ─────────────────────────────────────────────────────────────
   LAYOUT
   ───────────────────────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-sm);
}

.hero-section {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.hero-section h1 {
  background: linear-gradient(135deg, var(--neon-cyan) 0%, var(--neon-magenta) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

.hero-section p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto var(--spacing-md);
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: 1fr;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ─────────────────────────────────────────────────────────────
   BOTONES
   ───────────────────────────────────────────────────────────── */

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  transition: all var(--transition-normal);
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius-small);
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.neon-button,
.cta-button {
  background: transparent;
  border: 2px solid var(--neon-cyan);
  color: var(--neon-cyan);
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
}

.neon-button:hover,
.cta-button:hover {
  background: var(--neon-cyan);
  color: var(--bg-primary);
  box-shadow: 0 0 25px var(--neon-cyan), 0 0 50px var(--neon-cyan);
  transform: translateY(-2px);
}

.neon-button:active,
.cta-button:active {
  transform: translateY(0);
}

.secondary-button {
  background: transparent;
  border: 2px solid var(--neon-magenta);
  color: var(--neon-magenta);
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.secondary-button:hover {
  background: var(--neon-magenta);
  color: var(--bg-primary);
  box-shadow: 0 0 25px var(--neon-magenta), 0 0 50px var(--neon-magenta);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  border-radius: var(--radius-small);
}

.btn-danger {
  border-color: #ff4444;
  color: #ff4444;
}

.btn-danger:hover {
  background: #ff4444;
  color: white;
  box-shadow: 0 0 20px rgba(255, 68, 68, 0.6);
}

/* ─────────────────────────────────────────────────────────────
   INPUTS & FORMS
   ───────────────────────────────────────────────────────────── */

input[type="text"],
input[type="email"],
input[type="number"],
input[type="password"],
textarea,
select {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-small);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 16px;
  transition: all var(--transition-normal);
  outline: none;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 255, 249, 0.3);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

textarea {
  min-height: 100px;
  resize: vertical;
}

/* Checkbox personalizado */
.checkbox-custom {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 2px solid var(--neon-cyan);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

input[type="checkbox"]:checked + .checkbox-custom {
  background: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
}

input[type="checkbox"]:checked + .checkbox-custom::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--bg-primary);
  font-weight: bold;
  font-size: 16px;
}

input[type="checkbox"] {
  display: none;
}

/* Radio buttons */
input[type="radio"] {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid var(--neon-cyan);
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

input[type="radio"]:checked {
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
}

input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  background: var(--neon-cyan);
  border-radius: 50%;
}

/* ─────────────────────────────────────────────────────────────
   CARDS
   ───────────────────────────────────────────────────────────── */

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: var(--spacing-md);
  box-shadow: var(--shadow);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* ─────────────────────────────────────────────────────────────
   PROGRESS BAR
   ───────────────────────────────────────────────────────────── */

.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--neon-cyan) 0%, var(--neon-magenta) 100%);
  border-radius: 999px;
  transition: width var(--transition-slow);
  box-shadow: 0 0 15px var(--neon-cyan);
}

.progress-bar-large {
  height: 12px;
}

.progress-text {
  margin-top: var(--spacing-xs);
  font-size: 14px;
  color: var(--text-muted);
  text-align: center;
}

.progress-percent {
  font-size: 24px;
  font-weight: 700;
  color: var(--neon-cyan);
  text-align: center;
}

/* ─────────────────────────────────────────────────────────────
   BADGES
   ───────────────────────────────────────────────────────────── */

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-active {
  background: rgba(0, 255, 249, 0.2);
  color: var(--neon-cyan);
  border: 1px solid var(--neon-cyan);
}

.badge-used {
  background: rgba(139, 149, 167, 0.2);
  color: var(--text-muted);
  border: 1px solid var(--text-muted);
}

/* ─────────────────────────────────────────────────────────────
   UTILITIES
   ───────────────────────────────────────────────────────────── */

.hidden {
  display: none !important;
}

.text-gradient {
  background: linear-gradient(135deg, var(--neon-cyan) 0%, var(--neon-magenta) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

/* ─────────────────────────────────────────────────────────────
   RESPONSIVE
   ───────────────────────────────────────────────────────────── */

/* Mobile (< 768px) - Por defecto */
@media (max-width: 767px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .container {
    padding: var(--spacing-sm);
  }
  
  .hero-section {
    padding: var(--spacing-md) var(--spacing-sm);
  }
}

/* Tablet (768px - 1024px) */
@media (min-width: 768px) {
  .container {
    padding: var(--spacing-md);
  }
  
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop (> 1024px) */
@media (min-width: 1024px) {
  .container {
    max-width: 1200px;
    padding: var(--spacing-xl) var(--spacing-md);
  }
  
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}