/* ===== MODERN CSS RESET ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #374151;
  background: linear-gradient(135deg, #f8f9fa 0%, #e3f2fd 100%);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ===== VARIABLES CERTUAP REALES ===== */
:root {
  /* Colores oficiales CertUAP */
  --color-primary: #0E2954;
  --color-secondary: #1A5F7A;
  --color-accent: #57C5B6;
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  
  /* Colores adicionales de la plataforma */
  --color-orange: #ff6b35;
  --color-orange-hover: #ff5722;
  --color-orange-light: #ff8a65;
  --navbar-dark: #151a22;
  --navbar-secondary: #2c3e50;
  
  /* Colores para tipos de acciones */
  --color-ai-primary: #ff6b35;
  --color-ai-secondary: #ff8a65;
  --color-ai-light: #fff7ed;
  --color-stock-primary: #57C5B6;
  --color-stock-secondary: #4db8a8;
  --color-stock-light: #f0fdf4;
  
  /* Neutros */
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Espaciado */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Bordes */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;
  
  /* Sombras profesionales */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-card: 0 10px 40px rgba(0,0,0,0.1);
  
  /* Transiciones */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
}

/* ===== LAYOUT PRINCIPAL ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.main-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  padding-top: var(--space-6);
}

/* ===== HEADER OSCURO CERTUAP ===== */
.main-header {
  background: linear-gradient(135deg, var(--navbar-dark) 0%, var(--navbar-secondary) 100%);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  gap: var(--space-4);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transition: all var(--transition-base);
}

.brand:hover {
  transform: translateY(-1px);
}

.logo {
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
  transition: all var(--transition-base);
}

.logo:hover {
  transform: scale(1.05);
}

.brand-text h1 {
  font-size: 1.75rem;
  font-weight: 800;
  color: white;
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.025em;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.tagline {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  margin-top: var(--space-1);
  font-weight: 400;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.auth-buttons {
  display: flex;
  gap: var(--space-2);
}

/* ===== HERO SECTION AZUL PROFESIONAL ===== */
.hero-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  text-align: center;
  padding: var(--space-12) 0 var(--space-16);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.hero-content {
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: var(--space-8);
  letter-spacing: -0.02em;
  animation: fadeInUp 1s ease-out;
}

.hero-description {
  font-size: clamp(1rem, 3vw, 1.25rem);
  opacity: 0.95;
  max-width: 800px;
  margin: 0 auto;
  font-weight: 400;
  line-height: 1.7;
  animation: fadeInUp 1s ease-out 0.2s both;
}

/* ===== DASHBOARD CARDS BLANCAS ===== */
.user-dashboard {
  margin-bottom: var(--space-10);
}

.dashboard-card {
  background: var(--white);
  border-radius: var(--radius-3xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(87, 197, 182, 0.2);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  animation: slideInUp 0.8s ease-out;
}

.dashboard-card:hover {
  box-shadow: 0 15px 50px rgba(0,0,0,0.15);
  transform: translateY(-5px);
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 2px solid #e9ecef;
}

.dashboard-header h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.plan-badge {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  box-shadow: var(--shadow-md);
}

.plan-badge.plan-free {
  background: var(--gray-100);
  color: var(--gray-700);
}

.plan-badge.plan-pro {
  background: linear-gradient(135deg, var(--color-accent), #4db8a8);
  color: white;
}

.plan-badge.plan-premium {
  background: linear-gradient(135deg, var(--color-orange) 0%, #ff8a65 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
  animation: pulse 2s ease-in-out infinite;
}

/* ===== GRID DE CRÉDITOS ===== */
.credits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.credit-item {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-8);
  background: linear-gradient(135deg, #fafcff 0%, #f0f8ff 100%);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(87, 197, 182, 0.2);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.credit-item::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(87, 197, 182, 0.1), transparent);
  transform: rotate(-45deg);
  transition: all 0.6s ease;
  opacity: 0;
}

.credit-item:hover::before {
  opacity: 1;
  transform: rotate(-45deg) translate(50%, 50%);
}

.credit-item:hover {
  border-color: #00bfae;
  background: linear-gradient(135deg, #e7f9f7 0%, #e0f7fa 100%);
  transform: scale(1.02);
  box-shadow: 0 10px 30px rgba(87, 197, 182, 0.2);
}

.credit-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.credit-icon::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, transparent 50%);
  border-radius: 50%;
}

.credit-item:hover .credit-icon {
  transform: scale(1.1);
}

.ai-credits .credit-icon {
  background: linear-gradient(135deg, var(--color-orange) 0%, #ff8a65 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.stock-credits .credit-icon {
  background: linear-gradient(135deg, var(--color-accent) 0%, #4db8a8 100%);
  color: white;
  box-shadow: 0 6px 20px rgba(87, 197, 182, 0.3);
}

.upgrade-cta .credit-icon {
  background: linear-gradient(135deg, var(--gray-400), var(--gray-500));
  color: white;
}

.credit-info {
  flex: 1;
  min-width: 0;
}

.credit-value {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.credit-label {
  font-size: 1rem;
  color: var(--gray-600);
  font-weight: 600;
}

.credit-status {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--space-2);
}

.status-available { color: var(--color-success); }
.status-low { color: var(--color-warning); }
.status-exhausted { color: var(--color-danger); }
.status-unlimited { color: var(--color-accent); }

.reset-time {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-top: var(--space-1);
  font-style: italic;
}

/* ===== GUEST TRIAL CARD ===== */
.guest-trial {
  background: linear-gradient(135deg, #fafcff 0%, #f0f8ff 100%);
  border: 2px solid var(--color-accent);
  position: relative;
  overflow: hidden;
}

.trial-header {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.trial-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--color-accent) 0%, #4db8a8 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 6px 20px rgba(87, 197, 182, 0.3);
  animation: pulse 3s ease-in-out infinite;
  position: relative;
  overflow: hidden;
}

.trial-icon::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, transparent 50%);
  border-radius: 50%;
}

.trial-info {
  flex: 1;
  min-width: 0;
}

.trial-info h3 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.trial-info p {
  color: var(--gray-600);
  font-size: 1rem;
  line-height: 1.6;
}

.trial-status {
  text-align: center;
  flex-shrink: 0;
}

.credits-circle {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--color-orange) 0%, #ff8a65 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 900;
  font-size: 1.75rem;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
  animation: pulse 3s ease-in-out infinite;
  position: relative;
  overflow: hidden;
}

.credits-circle::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, transparent 50%);
  border-radius: 50%;
}

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

/* ===== BOTONES CERTUAP MEJORADOS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  border: none;
  border-radius: var(--radius-2xl);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 48px;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(87, 197, 182, 0.25);
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #0a1f3f 0%, #154f6b 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}

.btn-secondary {
  background: linear-gradient(135deg, var(--color-orange) 0%, #ff8a65 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-secondary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--color-orange-hover) 0%, #ff7043 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
  color: white;
}

.btn-outline {
  background: var(--white);
  color: var(--color-primary);
  border: 2px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.btn-outline:hover:not(:disabled) {
  background: rgba(87, 197, 182, 0.1);
  border-color: #00bfae;
  transform: translateY(-1px);
  color: var(--color-primary);
}

/* ===== BOTÓN COMENZAR GRANDE Y CENTRADO ===== */
.btn-large {
  padding: var(--space-6) var(--space-12);
  font-size: 1.25rem;
  font-weight: 800;
  min-height: 70px;
  border-radius: 35px;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-orange-light) 100%);
  color: white;
  box-shadow: 0 8px 30px rgba(255, 107, 53, 0.4);
  position: relative;
  overflow: hidden;
  min-width: 300px;
}

.btn-large::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.8s ease;
}

.btn-large:hover::after {
  transform: translateX(100%);
}

.btn-large:hover:not(:disabled) {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 12px 40px rgba(255, 107, 53, 0.5);
  background: linear-gradient(135deg, var(--color-orange-hover) 0%, var(--color-orange) 100%);
  color: white;
}

.btn-large:active {
  transform: translateY(-2px) scale(0.98);
}

.btn-small {
  padding: var(--space-2) var(--space-4);
  font-size: 0.75rem;
  min-height: 36px;
}

/* Botón especial IA naranja */
.btn-ia-special {
  background: linear-gradient(135deg, var(--color-orange) 0%, #ff8a65 100%);
  color: white;
  border-radius: 25px;
  font-weight: 600;
  padding: 12px 24px;
  text-decoration: none;
  border: none;
  transition: all var(--transition-base);
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-ia-special:hover {
  background: linear-gradient(135deg, var(--color-orange-hover) 0%, #ff7043 100%);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

/* ===== BOTÓN GRADIENT PARA GUESTS ===== */
.btn-gradient {
  background: linear-gradient(135deg, var(--color-accent) 0%, #4db8a8 100%);
  color: white;
  border: none;
  padding: var(--space-5) var(--space-8);
  border-radius: 25px;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: all var(--transition-base);
  box-shadow: 0 6px 20px rgba(87, 197, 182, 0.3);
  font-size: 1rem;
}

.btn-gradient:hover {
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(87, 197, 182, 0.4);
  background: linear-gradient(135deg, #009688 0%, var(--color-accent) 100%);
}

/* ===== FORMULARIOS PROFESIONALES ===== */
.generator-section {
  margin-bottom: var(--space-10);
}

.form-container {
  background: var(--white);
  border-radius: var(--radius-3xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(87, 197, 182, 0.2);
  position: relative;
  overflow: hidden;
  animation: slideInUp 0.8s ease-out 0.3s both;
}

.form-container:hover {
  box-shadow: 0 15px 50px rgba(0,0,0,0.15);
  transform: translateY(-5px);
}

.form-group {
  margin-bottom: var(--space-8);
}

.form-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1rem;
}

.char-counter {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: 500;
}

.main-prompt {
  margin-bottom: var(--space-8);
}

.prompt-input-wrapper {
  position: relative;
}

.prompt-input-wrapper textarea {
  width: 100%;
  min-height: 150px;
  padding: var(--space-6);
  border: 2px solid #e9ecef;
  border-radius: var(--radius-2xl);
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.6;
  resize: vertical;
  transition: all var(--transition-base);
  background: var(--white);
  color: var(--gray-900);
}

.prompt-input-wrapper textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 0.2rem rgba(87, 197, 182, 0.25);
  transform: translateY(-2px);
}

.prompt-input-wrapper textarea::placeholder {
  color: var(--gray-400);
}

/* ===== SELECTOR DE TIPO MEJORADO ===== */
.type-selector {
  margin-bottom: var(--space-10);
  padding: var(--space-8);
  background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
  border-radius: var(--radius-3xl);
  border: 2px solid #e9ecef;
  box-shadow: var(--shadow-lg);
}

.selector-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.selector-header h4 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.type-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
}

.type-option {
  background: var(--white);
  border: 3px solid #e9ecef;
  border-radius: var(--radius-3xl);
  padding: var(--space-10);
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--space-6);
  text-align: left;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.type-option::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(-45deg);
  transition: all 0.6s ease;
  opacity: 0;
}

.type-option:hover::before {
  opacity: 1;
  transform: rotate(-45deg) translate(50%, 50%);
}

.type-option:hover:not(.disabled) {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

/* COLORES ESPECÍFICOS PARA CREAR CON IA (NARANJA) */
.type-option.ai {
  border-color: var(--color-ai-primary);
}

.type-option.ai:hover:not(.disabled),
.type-option.ai.active {
  border-color: var(--color-ai-primary);
  background: linear-gradient(135deg, var(--color-ai-light) 0%, #fff7ed 100%);
  box-shadow: 0 15px 40px rgba(255, 107, 53, 0.25);
}

.type-option.ai .option-icon {
  background: linear-gradient(135deg, var(--color-ai-primary) 0%, var(--color-ai-secondary) 100%);
  color: white;
  box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
}

/* COLORES ESPECÍFICOS PARA BUSCAR FOTOS (VERDE/TURQUESA) */
.type-option.stock {
  border-color: var(--color-stock-primary);
}

.type-option.stock:hover:not(.disabled),
.type-option.stock.active {
  border-color: var(--color-stock-primary);
  background: linear-gradient(135deg, var(--color-stock-light) 0%, #f0fdf4 100%);
  box-shadow: 0 15px 40px rgba(87, 197, 182, 0.25);
}

.type-option.stock .option-icon {
  background: linear-gradient(135deg, var(--color-stock-primary) 0%, var(--color-stock-secondary) 100%);
  color: white;
  box-shadow: 0 8px 25px rgba(87, 197, 182, 0.4);
}

.type-option.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.option-icon {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.option-icon::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, transparent 50%);
  border-radius: 50%;
}

.type-option:hover .option-icon {
  transform: scale(1.1) rotate(5deg);
}

.option-content h4 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.option-content p {
  font-size: 1.1rem;
  color: var(--gray-600);
  margin-bottom: var(--space-4);
  line-height: 1.5;
}

.option-cost {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary);
  background: rgba(87, 197, 182, 0.1);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  border: 2px solid rgba(87, 197, 182, 0.2);
  display: inline-block;
}

/* ===== SUBMIT SECTION CENTRADA ===== */
.submit-section {
  text-align: center;
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 3px solid #e9ecef;
  position: relative;
}

.submit-section::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-accent) 100%);
  border-radius: var(--radius-full);
}

/* ===== SECCIÓN DE INSPIRACIÓN ===== */
.inspiration-section {
  background: var(--white);
  border-radius: var(--radius-3xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(87, 197, 182, 0.2);
  margin-bottom: var(--space-10);
  animation: slideInUp 0.8s ease-out 0.4s both;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.section-header h3 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.section-header p {
  color: var(--gray-600);
  font-size: 1rem;
}

.inspiration-tabs {
  display: flex;
  background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
  border-radius: var(--radius-2xl);
  padding: var(--space-1);
  margin-bottom: var(--space-8);
  gap: var(--space-1);
  border: 1px solid #e9ecef;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.tab-button {
  flex: 1;
  padding: var(--space-4) var(--space-6);
  background: transparent;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--gray-600);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.tab-button.active {
  background: var(--white);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.tab-button:hover:not(.active) {
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.5);
}

.inspiration-content {
  position: relative;
  min-height: 400px;
}

.inspiration-grid {
  display: none;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}

.inspiration-grid.active {
  display: grid;
}

.inspiration-card {
  background: var(--white);
  border: 1px solid #e9ecef;
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.inspiration-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  border-color: var(--color-accent);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  background: linear-gradient(135deg, var(--color-accent) 0%, #4db8a8 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.card-category {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gray-600);
  background: var(--gray-100);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.card-content {
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.card-description {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.5;
}

.card-footer {
  display: flex;
  justify-content: center;
}

.try-button {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0;
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.inspiration-card:hover .try-button {
  opacity: 1;
}

.inspiration-actions {
  text-align: center;
  margin-top: var(--space-8);
}

/* ===== USER MENU ===== */
.user-menu {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.user-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.user-info:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.user-avatar {
  font-size: 1.125rem;
  color: white;
}

.user-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: white;
}

.user-dropdown {
  display: flex;
  gap: var(--space-1);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border: none;
  background: none;
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  border-radius: var(--radius-lg);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.dropdown-item:hover {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  transform: translateY(-1px);
}

/* ===== LOADING ===== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(14, 41, 84, 0.9);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
}

.loading-content {
  background: var(--white);
  border-radius: var(--radius-3xl);
  padding: var(--space-10);
  text-align: center;
  max-width: 500px;
  margin: var(--space-6);
  box-shadow: var(--shadow-2xl);
  border: 1px solid rgba(87, 197, 182, 0.2);
}

.spinner-large {
  width: 64px;
  height: 64px;
  border: 4px solid rgba(87, 197, 182, 0.2);
  border-top: 4px solid var(--color-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-6);
  box-shadow: 0 10px 15px rgba(87, 197, 182, 0.1);
}

.loading-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.loading-content p {
  color: var(--gray-600);
  margin-bottom: var(--space-6);
  font-size: 1rem;
}

.loading-progress {
  width: 100%;
  height: 8px;
  background: rgba(87, 197, 182, 0.2);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(135deg, var(--color-accent) 0%, #4db8a8 100%);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
  width: 0%;
}

/* ===== SECCIÓN DE RESULTADOS MEJORADA ===== */
.result-section {
  background: var(--white);
  border-radius: var(--radius-3xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(87, 197, 182, 0.2);
  margin-bottom: var(--space-10);
  animation: slideInUp 0.6s ease-out;
}

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 2px solid #e9ecef;
}

.result-type {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
}

.result-type.ai {
  color: var(--color-orange);
}

.result-type.stock {
  color: var(--color-accent);
}

.result-stats {
  font-size: 0.875rem;
  color: var(--gray-600);
}

.demo-notice {
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(255, 138, 101, 0.05));
  border: 1px solid rgba(255, 107, 53, 0.2);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
  text-align: center;
  color: var(--color-orange);
  font-size: 0.875rem;
  font-weight: 600;
}

/* ===== GRID DE IMÁGENES MEJORADA ===== */
.images-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.image-item {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  background: var(--white);
  border: 1px solid #e9ecef;
  position: relative;
  opacity: 0;
  transform: translateY(20px);
}

.image-container {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 1;
}

.image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  cursor: pointer;
}

.image-container:hover img {
  transform: scale(1.05);
}

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(14, 41, 84, 0.8);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition-base);
}

.image-container:hover .image-overlay {
  opacity: 1;
}

.image-actions {
  display: flex;
  gap: var(--space-3);
  z-index: 10;
}

.btn-icon {
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-primary);
  border: none;
  border-radius: var(--radius-xl);
  padding: var(--space-3) var(--space-4);
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  min-width: 80px;
  justify-content: center;
}

.btn-icon:hover {
  background: white;
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

/* ===== MODAL DE IMAGEN MEJORADO ===== */
.image-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: fadeIn 0.3s ease-out;
}

.image-modal.show {
  display: flex;
}

.image-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  cursor: pointer;
}

.image-modal-content {
  position: relative;
  max-width: 95vw;
  max-height: 95vh;
  background: var(--white);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  animation: scaleIn 0.3s ease-out;
  display: flex;
  flex-direction: column;
}

.image-modal-content img {
  max-width: 100%;
  max-height: 80vh;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.image-modal-actions {
  padding: var(--space-4);
  background: var(--white);
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  border-top: 1px solid #e9ecef;
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: rgba(0, 0, 0, 0.7);
  color: white;
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close:hover {
  background: rgba(0, 0, 0, 0.9);
  transform: scale(1.1);
}

/* ===== FOOTER DE RESULTADOS ===== */
.result-footer {
  text-align: center;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 2px solid #e9ecef;
}

/* ===== SECCIONES ADICIONALES ===== */
.form-section {
  background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
  border-left: 4px solid var(--color-accent);
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  transition: all var(--transition-base);
}

.form-section:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

.section-header h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
}

.form-select {
  width: 100%;
  padding: var(--space-4);
  border: 2px solid #e9ecef;
  border-radius: var(--radius-xl);
  font-family: inherit;
  font-size: 0.875rem;
  background: var(--white);
  color: var(--gray-900);
  transition: all var(--transition-fast);
}

.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 0.2rem rgba(87, 197, 182, 0.25);
}

.checkbox-group {
  margin-top: var(--space-4);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--gray-700);
  font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
  margin: 0;
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
}

/* ===== ANIMACIONES ===== */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(60px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  .main-content {
    gap: var(--space-6);
    padding-top: var(--space-4);
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
    padding: var(--space-3) 0;
  }
  
  .brand {
    flex-direction: column;
    gap: var(--space-2);
  }
  
  .logo {
    height: 40px;
  }
  
  .brand-text h1 {
    font-size: 1.5rem;
  }
  
  .tagline {
    font-size: 0.75rem;
  }
  
  .auth-buttons {
    width: 100%;
    justify-content: center;
    flex-direction: column;
  }
  
  .hero-section {
    padding: var(--space-8) 0 var(--space-10);
  }
  
  .dashboard-card,
  .form-container,
  .inspiration-section {
    padding: var(--space-6);
  }
  
  .dashboard-header {
    flex-direction: column;
    gap: var(--space-4);
    align-items: flex-start;
  }
  
  .credits-grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
  
  .trial-header {
    flex-direction: column;
    text-align: center;
    gap: var(--space-5);
  }
  
  .type-options {
    grid-template-columns: 1fr;
  }
  
  .type-option {
    flex-direction: column;
    text-align: center;
    gap: var(--space-5);
    padding: var(--space-8);
  }
  
  .btn-large {
    width: 100%;
    min-width: auto;
    padding: var(--space-5) var(--space-8);
    font-size: 1.1rem;
  }
  
  .inspiration-tabs {
    flex-direction: column;
    gap: var(--space-1);
  }
  
  .inspiration-grid {
    grid-template-columns: 1fr;
  }
  
  .images-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-4);
  }
  
  .result-header {
    flex-direction: column;
    gap: var(--space-3);
    align-items: flex-start;
  }
  
  .image-actions {
    flex-direction: column;
    gap: var(--space-2);
  }
  
  .image-modal-content {
    margin: var(--space-2);
    max-width: calc(100vw - 1rem);
  }
  
  .image-modal-actions {
    flex-direction: column;
    gap: var(--space-2);
  }
}

@media (max-width: 480px) {
  .btn {
    width: 100%;
    justify-content: center;
    font-size: 0.75rem;
  }
  
  .btn-large {
    padding: var(--space-4) var(--space-6);
    min-height: 60px;
    font-size: 1rem;
  }
  
  .credit-item {
    padding: var(--space-5);
  }
  
  .credit-icon {
    width: 56px;
    height: 56px;
    font-size: 1.25rem;
  }
  
  .trial-icon,
  .credits-circle {
    width: 64px;
    height: 64px;
    font-size: 1.5rem;
  }
  
  .option-icon {
    width: 80px;
    height: 80px;
    font-size: 2rem;
  }
  
  .inspiration-card {
    padding: var(--space-4);
  }
  
  .card-icon {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  
  .images-grid {
    grid-template-columns: 1fr;
  }
  
  .image-container {
    aspect-ratio: 4/3;
  }
}

/* ===== UTILIDADES ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

/* ===== ACCESIBILIDAD ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===== EFECTOS ESPECIALES ===== */
.dashboard-card:hover .trial-icon,
.dashboard-card:hover .credits-circle {
  animation-duration: 1.5s;
}

/* ===== CONTROLES DE FORMULARIO ===== */
.form-control {
  border-radius: 25px;
  border: 2px solid #e9ecef;
  padding: 12px 20px;
  transition: all var(--transition-base);
}

.form-control:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 0.2rem rgba(87, 197, 182, 0.25);
}

/* ===== NOTIFICACIONES ===== */
.alert {
  border-radius: 12px;
  border: none;
  padding: 1rem 1.5rem;
  margin: 1rem 0;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.alert-danger {
  background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
  color: var(--color-danger);
  border-left: 4px solid var(--color-danger);
}

/* ===== SOPORTE PARA SAFE AREAS ===== */
@supports (padding: max(0px)) {
  .container {
    padding-left: max(var(--space-4), env(safe-area-inset-left));
    padding-right: max(var(--space-4), env(safe-area-inset-right));
  }
}

/* ===== CORRECCIÓN PARA CENTRAR BOTÓN COMENZAR ===== */
.submit-section {
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
  text-align: center !important;
  margin-top: var(--space-12) !important;
  padding-top: var(--space-8) !important;
  border-top: 3px solid #e9ecef !important;
  position: relative !important;
  width: 100% !important;
}

.submit-section .btn-large {
  margin: 0 auto !important;
  display: block !important;
  text-align: center !important;
}

/* Asegurar que el formulario también esté centrado */
.form-container {
  text-align: center !important;
}

.form-container .submit-section {
  margin-left: auto !important;
  margin-right: auto !important;
}