/* =========================================================
   AURORA DESIGN SYSTEM
   Minimalista, elegante y moderno
   Mobile-First Approach
   ========================================================= */

/* ===== VARIABLES DE DISEÑO ===== */
:root {
  /* Paleta de colores principal */
  --aurora-primary: #4361ee;
  --aurora-primary-light: #4895ef;
  --aurora-primary-dark: #3a56d4;
  --aurora-secondary: #7209b7;
  --aurora-accent: #ff6b6b;
  --aurora-success: #4ade80;
  --aurora-warning: #facc15;
  --aurora-danger: #f87171;
  
  /* Colores neutros */
  --aurora-bg: #f8f9fa;
  --aurora-bg-dark: #edf2f7;
  --aurora-card: #ffffff;
  --aurora-text: #1a1a1a;
  --aurora-text-secondary: #4a5568;
  --aurora-text-muted: #718096;
  --aurora-border: #e2e8f0;
  --aurora-border-dark: #cbd5e0;
  
  /* Sombras sutiles */
  --aurora-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --aurora-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  --aurora-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08);
  --aurora-shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.1);
  
  /* Espaciado (sistema 4px) */
  --aurora-space-1: 4px;
  --aurora-space-2: 8px;
  --aurora-space-3: 12px;
  --aurora-space-4: 16px;
  --aurora-space-5: 20px;
  --aurora-space-6: 24px;
  --aurora-space-7: 28px;
  --aurora-space-8: 32px;
  --aurora-space-9: 36px;
  --aurora-space-10: 40px;
  --aurora-space-12: 48px;
  --aurora-space-16: 64px;
  
  /* Radio de bordes */
  --aurora-radius-sm: 8px;
  --aurora-radius-md: 12px;
  --aurora-radius-lg: 16px;
  --aurora-radius-xl: 24px;
  --aurora-radius-2xl: 32px;
  --aurora-radius-full: 9999px;
  
  /* Tipografía */
  --aurora-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --aurora-font-mono: 'SF Mono', 'Fira Code', 'Menlo', monospace;
  
  /* Transiciones */
  --aurora-transition-fast: all 0.2s ease;
  --aurora-transition-normal: all 0.3s ease;
  --aurora-transition-slow: all 0.5s ease;
  
  /* Breakpoints */
  --aurora-breakpoint-sm: 640px;
  --aurora-breakpoint-md: 768px;
  --aurora-breakpoint-lg: 1024px;
  --aurora-breakpoint-xl: 1280px;
}

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

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

body {
  font-family: var(--aurora-font-sans);
  background-color: var(--aurora-bg);
  color: var(--aurora-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--aurora-font-sans);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--aurora-space-4);
}

h1 { font-size: 2.5rem; letter-spacing: -0.025em; }
h2 { font-size: 2rem; letter-spacing: -0.02em; }
h3 { font-size: 1.75rem; letter-spacing: -0.015em; }
h4 { font-size: 1.5rem; letter-spacing: -0.01em; }
h5 { font-size: 1.25rem; letter-spacing: 0; }
h6 { font-size: 1rem; letter-spacing: 0.01em; }

p, label, span {
  font-size: 1rem;
  line-height: 1.6;
}

/* ===== BUTTONS ===== */
.aurora-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--aurora-space-2);
  padding: var(--aurora-space-3) var(--aurora-space-6);
  border-radius: var(--aurora-radius-md);
  font-family: var(--aurora-font-sans);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--aurora-transition-normal);
  border: none;
  text-decoration: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  min-height: 44px;
}

.aurora-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--aurora-shadow);
}

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

.aurora-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.aurora-btn-primary {
  background: linear-gradient(135deg, var(--aurora-primary), var(--aurora-primary-dark));
  color: white;
  box-shadow: var(--aurora-shadow);
}

.aurora-btn-primary:hover {
  background: linear-gradient(135deg, var(--aurora-primary-light), var(--aurora-primary));
  box-shadow: var(--aurora-shadow-lg);
}

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

.aurora-btn-secondary:hover {
  border-color: var(--aurora-primary);
  box-shadow: var(--aurora-shadow);
}

.aurora-btn-accent {
  background: linear-gradient(135deg, var(--aurora-accent), #ff5252);
  color: white;
  box-shadow: var(--aurora-shadow);
}

.aurora-btn-accent:hover {
  background: linear-gradient(135deg, #ff5252, #e54a4a);
  box-shadow: var(--aurora-shadow-lg);
}

.aurora-btn-success {
  background: linear-gradient(135deg, var(--aurora-success), #38b568);
  color: white;
}

.aurora-btn-outline {
  background: transparent;
  border: 2px solid var(--aurora-border);
  color: var(--aurora-text-secondary);
}

.aurora-btn-sm {
  padding: var(--aurora-space-2) var(--aurora-space-4);
  font-size: 0.875rem;
  min-height: 36px;
}

.aurora-btn-lg {
  padding: var(--aurora-space-4) var(--aurora-space-8);
  font-size: 1.125rem;
  min-height: 52px;
}

.aurora-btn-full {
  width: 100%;
}

/* ===== CARDS ===== */
.aurora-card {
  background: var(--aurora-card);
  border-radius: var(--aurora-radius-lg);
  padding: var(--aurora-space-6);
  box-shadow: var(--aurora-shadow);
  transition: var(--aurora-transition-normal);
  border: 1px solid var(--aurora-border);
}

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

.aurora-card-sm {
  padding: var(--aurora-space-4);
}

.aurora-card-lg {
  padding: var(--aurora-space-8);
}

/* ===== FORMS ===== */
.aurora-form-group {
  margin-bottom: var(--aurora-space-5);
}

.aurora-form-label {
  display: block;
  margin-bottom: var(--aurora-space-2);
  font-weight: 600;
  color: var(--aurora-text);
  font-size: 0.9375rem;
}

.aurora-form-control,
.aurora-form-select,
.aurora-form-textarea {
  width: 100%;
  padding: var(--aurora-space-3) var(--aurora-space-4);
  border: 1px solid var(--aurora-border);
  border-radius: var(--aurora-radius-md);
  font-family: var(--aurora-font-sans);
  font-size: 1rem;
  color: var(--aurora-text);
  background: white;
  transition: var(--aurora-transition-fast);
}

.aurora-form-control:focus,
.aurora-form-select:focus,
.aurora-form-textarea:focus {
  outline: none;
  border-color: var(--aurora-primary);
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
}

.aurora-form-text {
  margin-top: var(--aurora-space-2);
  font-size: 0.875rem;
  color: var(--aurora-text-muted);
}

.aurora-checkbox-group,
.aurora-radio-group {
  display: flex;
  align-items: center;
  gap: var(--aurora-space-2);
  margin-bottom: var(--aurora-space-3);
  padding: var(--aurora-space-2) 0;
}

.aurora-checkbox-input,
.aurora-radio-input {
  width: 20px;
  height: 20px;
  border: 2px solid var(--aurora-border);
  border-radius: var(--aurora-radius-sm);
  background: white;
  cursor: pointer;
  transition: var(--aurora-transition-fast);
  accent-color: var(--aurora-primary);
}

.aurora-checkbox-input:checked,
.aurora-radio-input:checked {
  border-color: var(--aurora-primary);
}

.aurora-checkbox-label,
.aurora-radio-label {
  font-weight: 500;
  color: var(--aurora-text);
  cursor: pointer;
}

/* ===== NAVBAR ===== */
.aurora-navbar {
  background: white;
  padding: var(--aurora-space-4) var(--aurora-space-6);
  box-shadow: var(--aurora-shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--aurora-border);
}

.aurora-navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.aurora-navbar-brand {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--aurora-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--aurora-space-2);
}

.aurora-user-badge {
  display: flex;
  align-items: center;
  gap: var(--aurora-space-2);
  background: var(--aurora-bg-dark);
  padding: var(--aurora-space-2) var(--aurora-space-4);
  border-radius: var(--aurora-radius-full);
  font-weight: 600;
  color: var(--aurora-text);
}

/* ===== STATS GRID ===== */
.aurora-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--aurora-space-6);
  margin-bottom: var(--aurora-space-8);
}

.aurora-stat-card {
  background: linear-gradient(135deg, white, #f9fafb);
  border-radius: var(--aurora-radius-xl);
  padding: var(--aurora-space-6);
  box-shadow: var(--aurora-shadow);
  border: 1px solid var(--aurora-border);
  transition: var(--aurora-transition-normal);
  position: relative;
  overflow: hidden;
}

.aurora-stat-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(67, 97, 238, 0.1) 0%, transparent 70%);
  z-index: 0;
  transition: var(--aurora-transition-normal);
}

.aurora-stat-card:hover::before {
  top: -30%;
  left: -30%;
  width: 160%;
  height: 160%;
}

.aurora-stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--aurora-shadow-lg);
}

.aurora-stat-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: var(--aurora-space-4);
}

.aurora-stat-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--aurora-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: bold;
  flex-shrink: 0;
}

.aurora-stat-icon.primary {
  background: linear-gradient(135deg, rgba(67, 97, 238, 0.15), rgba(58, 86, 212, 0.1));
  color: var(--aurora-primary);
}

.aurora-stat-icon.success {
  background: linear-gradient(135deg, rgba(74, 222, 128, 0.15), rgba(58, 180, 102, 0.1));
  color: var(--aurora-success);
}

.aurora-stat-icon.warning {
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.15), rgba(224, 183, 18, 0.1));
  color: var(--aurora-warning);
}

.aurora-stat-icon.accent {
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.15), rgba(248, 113, 113, 0.1));
  color: var(--aurora-accent);
}

.aurora-stat-text {
  flex: 1;
}

.aurora-stat-label {
  font-size: 0.875rem;
  color: var(--aurora-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  margin-bottom: var(--aurora-space-1);
}

.aurora-stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--aurora-text);
  line-height: 1;
}

/* ===== TASKS GRID ===== */
.aurora-tasks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--aurora-space-6);
}

.aurora-task-card {
  background: white;
  border-radius: var(--aurora-radius-lg);
  padding: var(--aurora-space-5);
  box-shadow: var(--aurora-shadow);
  border-left: 4px solid var(--aurora-primary);
  transition: var(--aurora-transition-normal);
  border: 1px solid var(--aurora-border);
}

.aurora-task-card:hover {
  box-shadow: var(--aurora-shadow-lg);
  transform: translateY(-2px);
  border-color: var(--aurora-primary-light);
}

.aurora-task-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--aurora-space-4);
  padding-bottom: var(--aurora-space-4);
  border-bottom: 1px solid var(--aurora-border);
}

.aurora-task-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--aurora-text);
  margin-bottom: var(--aurora-space-2);
  line-height: 1.3;
}

.aurora-task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--aurora-space-3);
  font-size: 0.875rem;
  color: var(--aurora-text-muted);
}

.aurora-task-meta-item {
  display: flex;
  align-items: center;
  gap: var(--aurora-space-1);
}

.aurora-task-notes {
  margin-top: var(--aurora-space-4);
  padding-top: var(--aurora-space-4);
  border-top: 1px solid var(--aurora-border);
  font-size: 0.9375rem;
  color: var(--aurora-text-secondary);
  line-height: 1.6;
  font-style: italic;
}

/* ===== MODAL ===== */
.aurora-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: var(--aurora-space-4);
  opacity: 0;
  transition: opacity var(--aurora-transition-normal);
}

.aurora-modal.show {
  display: flex;
  opacity: 1;
}

.aurora-modal-content {
  background: white;
  border-radius: var(--aurora-radius-2xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--aurora-shadow-xl);
  transform: translateY(20px);
  transition: transform var(--aurora-transition-normal);
  animation: modalSlideUp 0.4s ease forwards;
}

@keyframes modalSlideUp {
  to {
    transform: translateY(0);
  }
}

.aurora-modal-header {
  padding: var(--aurora-space-6) var(--aurora-space-6) var(--aurora-space-4);
  border-bottom: 1px solid var(--aurora-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.aurora-modal-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--aurora-text);
  display: flex;
  align-items: center;
  gap: var(--aurora-space-3);
}

.aurora-modal-close {
  background: transparent;
  border: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: var(--aurora-text-muted);
  padding: var(--aurora-space-1);
  border-radius: var(--aurora-radius-full);
  transition: var(--aurora-transition-fast);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.aurora-modal-close:hover {
  background: var(--aurora-bg-dark);
  color: var(--aurora-primary);
}

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

.aurora-modal-footer {
  padding: var(--aurora-space-4) var(--aurora-space-6) var(--aurora-space-6);
  border-top: 1px solid var(--aurora-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--aurora-space-3);
}

/* ===== BOTTOM NAV (Mobile) ===== */
.aurora-bottom-nav {
  display: flex;
  justify-content: space-around;
  align-items: center;
  background: white;
  border-top: 1px solid var(--aurora-border);
  padding: var(--aurora-space-3) 0;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.aurora-bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--aurora-space-1);
  color: var(--aurora-text-muted);
  text-decoration: none;
  font-size: 0.75rem;
  padding: var(--aurora-space-2) var(--aurora-space-3);
  border-radius: var(--aurora-radius-md);
  transition: var(--aurora-transition-fast);
}

.aurora-bottom-nav-item:hover,
.aurora-bottom-nav-item.active {
  color: var(--aurora-primary);
  background: var(--aurora-bg-dark);
}

.aurora-bottom-nav-icon {
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== UTILITIES ===== */
.aurora-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--aurora-space-4);
}

.aurora-section-title {
  font-size: 1.875rem;
  font-weight: 800;
  margin: var(--aurora-space-10) 0 var(--aurora-space-6);
  display: flex;
  align-items: center;
  gap: var(--aurora-space-3);
  color: var(--aurora-text);
  position: relative;
  padding-bottom: var(--aurora-space-3);
}

.aurora-section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--aurora-primary);
  border-radius: var(--aurora-radius-full);
}

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

.aurora-mt-1 { margin-top: var(--aurora-space-1); }
.aurora-mt-2 { margin-top: var(--aurora-space-2); }
.aurora-mt-3 { margin-top: var(--aurora-space-3); }
.aurora-mt-4 { margin-top: var(--aurora-space-4); }
.aurora-mt-5 { margin-top: var(--aurora-space-5); }
.aurora-mt-6 { margin-top: var(--aurora-space-6); }

.aurora-mb-1 { margin-bottom: var(--aurora-space-1); }
.aurora-mb-2 { margin-bottom: var(--aurora-space-2); }
.aurora-mb-3 { margin-bottom: var(--aurora-space-3); }
.aurora-mb-4 { margin-bottom: var(--aurora-space-4); }
.aurora-mb-5 { margin-bottom: var(--aurora-space-5); }
.aurora-mb-6 { margin-bottom: var(--aurora-space-6); }

.aurora-p-1 { padding: var(--aurora-space-1); }
.aurora-p-2 { padding: var(--aurora-space-2); }
.aurora-p-3 { padding: var(--aurora-space-3); }
.aurora-p-4 { padding: var(--aurora-space-4); }
.aurora-p-5 { padding: var(--aurora-space-5); }
.aurora-p-6 { padding: var(--aurora-space-6); }

/* ===== LOADING ===== */
.aurora-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(67, 97, 238, 0.2);
  border-top-color: var(--aurora-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  :root {
    --aurora-space-4: 14px;
    --aurora-space-5: 18px;
    --aurora-space-6: 20px;
  }
  
  h1 { font-size: 2.125rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .aurora-navbar {
    padding: var(--aurora-space-3) var(--aurora-space-4);
  }
  
  .aurora-navbar-brand {
    font-size: 1.375rem;
  }
  
  .aurora-stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--aurora-space-4);
  }
  
  .aurora-stat-value {
    font-size: 2rem;
  }
  
  .aurora-tasks-grid {
    grid-template-columns: 1fr;
  }
  
  .aurora-modal-content {
    max-width: 95%;
    max-height: 85vh;
    border-radius: var(--aurora-radius-xl);
  }
  
  .aurora-modal-body {
    padding: var(--aurora-space-4);
  }
  
  .aurora-modal-footer {
    padding: var(--aurora-space-3) var(--aurora-space-4) var(--aurora-space-4);
    flex-direction: column;
    gap: var(--aurora-space-3);
  }
  
  .aurora-modal-footer .aurora-btn {
    width: 100%;
  }
  
  .aurora-section-title {
    font-size: 1.625rem;
    margin: var(--aurora-space-8) 0 var(--aurora-space-5);
  }
  
  .aurora-card {
    padding: var(--aurora-space-4);
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

/* ===== PRINT ===== */
@media print {
  body {
    background: white;
    padding: 0;
  }
  
  .aurora-navbar,
  .aurora-bottom-nav,
  .aurora-btn {
    display: none !important;
  }
  
  .aurora-card {
    box-shadow: none;
    border: 1px solid var(--aurora-border);
  }
}