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

:root {
  --bg-main: #0b0f19;
  --bg-surface: #111827;
  --bg-surface-elevated: #1e293b;
  --bg-glass: rgba(17, 24, 39, 0.85);
  
  --border-color: #334155;
  --border-subtle: #1e293b;
  --border-focus: #06b6d4;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --primary: #06b6d4;
  --primary-hover: #0891b2;
  --primary-glow: rgba(6, 182, 212, 0.25);
  
  --accent: #3b82f6;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.2);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: #38bdf8;
}

/* =========================================================================
   1. Fluid Main Layout & Off-canvas Drawer Navigation
   ========================================================================= */
.app-container {
  display: flex;
  min-height: 100vh;
  width: 100vw;
  max-width: 100%;
  position: relative;
}

.sidebar {
  width: 260px;
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 40;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-header {
  padding: 1.25rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-glow);
  flex-shrink: 0;
}

.logo-text h1 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff, #94a3b8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text span {
  font-size: 0.7rem;
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.sidebar-nav {
  padding: 1rem 0.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.nav-heading {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  padding: 0.5rem 0.75rem 0.25rem;
  margin-top: 0.5rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-link:hover {
  background-color: var(--bg-surface-elevated);
  color: var(--text-main);
}

.nav-link.active {
  background: linear-gradient(90deg, rgba(6, 182, 212, 0.15), rgba(59, 130, 246, 0.05));
  border-left: 3px solid var(--primary);
  color: var(--primary);
  font-weight: 600;
}

.nav-link svg {
  width: 18px;
  height: 18px;
  stroke-width: 2;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--border-subtle);
  background-color: rgba(0, 0, 0, 0.15);
}

.user-profile-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #334155, #1e293b);
  border: 1px solid var(--border-color);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

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

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* Backdrop for mobile drawer */
.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 35;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.sidebar-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.sidebar-toggle-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  padding: 0.4rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease;
}

.sidebar-toggle-btn:hover {
  background-color: var(--bg-surface-elevated);
}

/* Main Viewport Content */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  width: 100%;
}

.top-navbar {
  height: 64px;
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1rem, 3vw, 2rem);
  position: sticky;
  top: 0;
  z-index: 30;
}

.page-title {
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.content-body {
  padding: clamp(1rem, 2.5vw, 2rem);
  flex: 1;
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
}

/* =========================================================================
   2. Fluid Cards, Grids, and Metrics
   ========================================================================= */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.metric-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(6, 182, 212, 0.4);
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.metric-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(6, 182, 212, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.metric-value {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: #fff;
}

.metric-footer {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* General Container Card */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: clamp(1rem, 2vw, 1.5rem);
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* =========================================================================
   3. Fluid Tables & Data Views
   ========================================================================= */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.table th {
  background-color: rgba(0, 0, 0, 0.3);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-main);
  vertical-align: middle;
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

/* =========================================================================
   4. Buttons, Forms & Interactive UI
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.4);
}

.btn-secondary {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: #334155;
  color: #fff;
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.775rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.9rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.55rem;
  border-radius: 9999px;
  font-size: 0.725rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-ct { background: rgba(6, 182, 212, 0.15); color: #06b6d4; border: 1px solid rgba(6, 182, 212, 0.3); }
.badge-mr { background: rgba(168, 85, 247, 0.15); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.3); }
.badge-cr, .badge-dx { background: rgba(59, 130, 246, 0.15); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.3); }
.badge-us { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-ot { background: rgba(100, 116, 139, 0.15); color: #94a3b8; border: 1px solid rgba(100, 116, 139, 0.3); }

/* Alerts */
.alert {
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34d399;
}

.alert-error, .alert-danger {
  background-color: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #f87171;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 1rem;
}

.modal-content {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  background-color: rgba(0, 0, 0, 0.2);
}

/* =========================================================================
   5. Comprehensive Responsive Breakpoints (Web Líquida)
   ========================================================================= */
@media (max-width: 1023px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
    z-index: 100;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-toggle-btn {
    display: inline-flex;
  }
}

@media (max-width: 768px) {
  .top-navbar {
    padding: 0 1rem;
  }

  .content-body {
    padding: 1rem;
  }

  .btn-text {
    display: none;
  }

  .btn-sm {
    padding: 0.35rem 0.5rem;
  }

  .card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .modal-content {
    max-width: 100%;
    margin: 0;
  }
}

@media (max-width: 480px) {
  .top-navbar {
    height: 56px;
  }

  .page-title {
    font-size: 1.05rem;
  }

  .metric-card {
    padding: 1rem;
  }

  .table th, .table td {
    padding: 0.65rem 0.75rem;
    font-size: 0.8rem;
  }
}