/* ============================================
   APA GENERATOR - DESIGN SYSTEM
   Sistema de diseño profesional y moderno
   ============================================ */

/* ============================================
   1. VARIABLES CSS - TOKENS DE DISEÑO
   ============================================ */

:root {
  /* Colores Principales */
  --color-primary: #94335E;
  --color-primary-light: #B04573;
  --color-primary-dark: #6B2544;
  --color-primary-gradient: linear-gradient(135deg, #94335E 0%, #6B2544 100%);
  
  --color-secondary: #E5C99C;
  --color-secondary-light: #F0D9B5;
  --color-secondary-dark: #D4B885;
  
  /* Colores de Acento */
  --color-accent-blue: #4A90E2;
  --color-accent-green: #7CB342;
  --color-accent-orange: #FF9800;
  --color-accent-red: #E74C3C;
  
  /* Colores de Estado */
  --color-success: #28A745;
  --color-success-light: #D4EDDA;
  --color-warning: #FFC107;
  --color-warning-light: #FFF3CD;
  --color-error: #DC3545;
  --color-error-light: #F8D7DA;
  --color-info: #17A2B8;
  --color-info-light: #D1ECF1;
  
  /* Escala de Grises */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;
  --color-black: #000000;
  
  /* Tipografía */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'Courier New', Courier, monospace;
  
  /* Tamaños de Fuente - Escalado Fluido */
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --font-size-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 1.05rem + 0.375vw, 1.25rem);
  --font-size-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  --font-size-2xl: clamp(1.5rem, 1.35rem + 0.75vw, 1.875rem);
  --font-size-3xl: clamp(1.875rem, 1.65rem + 1.125vw, 2.25rem);
  --font-size-4xl: clamp(2.25rem, 1.95rem + 1.5vw, 3rem);
  
  /* Pesos de Fuente */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Altura de Línea */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --line-height-loose: 2;
  
  /* Espaciado - Sistema de 4px */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  
  /* Radios de Borde */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-base: 0.375rem; /* 6px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;
  
  /* Sombras */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-2xl: 0 35px 60px -15px rgba(0, 0, 0, 0.3);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
  
  /* Sombras de Color */
  --shadow-primary: 0 10px 25px -5px rgba(148, 51, 94, 0.3);
  --shadow-secondary: 0 10px 25px -5px rgba(229, 201, 156, 0.3);
  
  /* Transiciones */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* Anchos Máximos */
  --max-width-xs: 20rem;    /* 320px */
  --max-width-sm: 24rem;    /* 384px */
  --max-width-md: 28rem;    /* 448px */
  --max-width-lg: 32rem;    /* 512px */
  --max-width-xl: 36rem;    /* 576px */
  --max-width-2xl: 42rem;   /* 672px */
  --max-width-3xl: 48rem;   /* 768px */
  --max-width-4xl: 56rem;   /* 896px */
  --max-width-5xl: 64rem;   /* 1024px */
  --max-width-6xl: 72rem;   /* 1152px */
  --max-width-7xl: 80rem;   /* 1280px */
  --max-width-full: 100%;
}

/* ============================================
   2. RESET Y BASE
   ============================================ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background-color: var(--color-gray-50);
  min-height: 100vh;
}

/* ============================================
   3. TIPOGRAFÍA
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--space-4);
  color: var(--color-gray-700);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

strong, b {
  font-weight: var(--font-weight-bold);
}

em, i {
  font-style: italic;
}

small {
  font-size: var(--font-size-sm);
}

/* ============================================
   4. BOTONES
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  user-select: none;
  min-height: 44px; /* Accesibilidad táctil */
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Efecto de onda al hacer clic */
.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width var(--transition-slow), height var(--transition-slow);
}

.btn:active::after {
  width: 300px;
  height: 300px;
}

/* Variantes de Botones */
.btn-primary {
  background: var(--color-primary-gradient);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

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

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--color-secondary);
  color: var(--color-primary);
  border-color: var(--color-secondary-dark);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-secondary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-secondary);
}

.btn-outline-primary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline-primary:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-outline-secondary {
  background: transparent;
  color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
}

.btn-outline-secondary:hover {
  background: var(--color-secondary);
  color: var(--color-primary);
}

.btn-success {
  background: var(--color-success);
  color: var(--color-white);
  border-color: var(--color-success);
}

.btn-success:hover {
  background: #218838;
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(40, 167, 69, 0.3);
}

.btn-danger {
  background: var(--color-error);
  color: var(--color-white);
  border-color: var(--color-error);
}

.btn-danger:hover {
  background: #c82333;
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(220, 53, 69, 0.3);
}

/* Tamaños de Botones */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* ============================================
   5. TARJETAS (CARDS)
   ============================================ */

.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-base);
  padding: var(--space-6);
  transition: all var(--transition-base);
  border: 1px solid var(--color-gray-200);
}

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

.card-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
  margin: calc(var(--space-6) * -1) calc(var(--space-6) * -1) var(--space-6);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  background: var(--color-gray-50);
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-gray-200);
  margin: var(--space-6) calc(var(--space-6) * -1) calc(var(--space-6) * -1);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  background: var(--color-gray-50);
}

/* Tarjeta Interactiva */
.card-interactive {
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.card-interactive::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.card-interactive:hover::before {
  transform: scaleX(1);
}

/* ============================================
   6. FORMULARIOS
   ============================================ */

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.form-label-required::after {
  content: ' *';
  color: var(--color-error);
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  background-clip: padding-box;
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  min-height: 44px;
}

.form-control:hover {
  border-color: var(--color-gray-400);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(148, 51, 94, 0.1);
}

.form-control:disabled {
  background-color: var(--color-gray-100);
  opacity: 0.6;
  cursor: not-allowed;
}

.form-control.is-valid {
  border-color: var(--color-success);
}

.form-control.is-valid:focus {
  box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1);
}

.form-control.is-invalid {
  border-color: var(--color-error);
}

.form-control.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-text {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.valid-feedback {
  display: none;
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-success);
}

.form-control.is-valid ~ .valid-feedback {
  display: block;
}

.invalid-feedback {
  display: none;
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.form-control.is-invalid ~ .invalid-feedback {
  display: block;
}

/* Select personalizado */
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 16px 12px;
  padding-right: var(--space-10);
}

/* ============================================
   7. ALERTAS Y NOTIFICACIONES
   ============================================ */

.alert {
  position: relative;
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
}

.alert-success {
  color: #155724;
  background-color: var(--color-success-light);
  border-color: #c3e6cb;
}

.alert-info {
  color: #0c5460;
  background-color: var(--color-info-light);
  border-color: #bee5eb;
}

.alert-warning {
  color: #856404;
  background-color: var(--color-warning-light);
  border-color: #ffeeba;
}

.alert-danger {
  color: #721c24;
  background-color: var(--color-error-light);
  border-color: #f5c6cb;
}

/* ============================================
   8. ANIMACIONES
   ============================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

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

.animate-fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

.animate-slide-in-right {
  animation: slideInRight var(--transition-base) ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft var(--transition-base) ease-out;
}

/* ============================================
   9. UTILIDADES
   ============================================ */

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

.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--color-secondary-dark) !important; }
.text-success { color: var(--color-success) !important; }
.text-danger { color: var(--color-error) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-info { color: var(--color-info) !important; }
.text-muted { color: var(--color-gray-600) !important; }

.bg-primary { background-color: var(--color-primary) !important; }
.bg-secondary { background-color: var(--color-secondary) !important; }
.bg-light { background-color: var(--color-gray-100) !important; }
.bg-white { background-color: var(--color-white) !important; }

.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }

.flex-column { flex-direction: column !important; }
.flex-row { flex-direction: row !important; }
.align-items-center { align-items: center !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }

.gap-2 { gap: var(--space-2) !important; }
.gap-3 { gap: var(--space-3) !important; }
.gap-4 { gap: var(--space-4) !important; }

.mt-2 { margin-top: var(--space-2) !important; }
.mt-3 { margin-top: var(--space-3) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-3 { margin-bottom: var(--space-3) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }

.p-2 { padding: var(--space-2) !important; }
.p-3 { padding: var(--space-3) !important; }
.p-4 { padding: var(--space-4) !important; }

.rounded { border-radius: var(--radius-base) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow-base) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

/* ============================================
   10. RESPONSIVE
   ============================================ */

@media (max-width: 480px) {
  :root {
    --space-6: 1rem;
    --space-8: 1.5rem;
  }
  
  .card {
    padding: var(--space-4);
  }
}

@media (max-width: 768px) {
  .btn {
    padding: var(--space-3) var(--space-5);
  }
}