/* ==========================================================================
   Sistema de Control de Gastos de Caja Chica — Carrasco y Reyes
   Design System & Core Styles
   ========================================================================== */

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

:root {
  /* Paleta Corporativa Carrasco y Reyes */
  --primary-950: #071320;
  --primary-900: #0d233a;
  --primary-800: #15385b;
  --primary-700: #1d4d7c;
  --primary-600: #2563eb;
  --primary-500: #0084d6;
  --primary-400: #38bdf8;
  --primary-100: #e0f2fe;
  --primary-50:  #f0f9ff;

  /* Colores de Acento y Estado */
  --success-600: #059669;
  --success-500: #10b981;
  --success-100: #d1fae5;
  --success-50:  #ecfdf5;

  --warning-600: #d97706;
  --warning-500: #f59e0b;
  --warning-100: #fef3c7;
  --warning-50:  #fffbeb;

  --danger-600: #dc2626;
  --danger-500: #ef4444;
  --danger-100: #fee2e2;
  --danger-50:  #fef2f2;

  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;
  --white:     #ffffff;

  /* Tipografía y Espaciado */
  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --sidebar-width: 270px;
  --topbar-height: 72px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-full: 9999px;

  /* Sombras Modernas */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(13, 35, 58, 0.08), 0 2px 4px -2px rgba(13, 35, 58, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(13, 35, 58, 0.10), 0 4px 6px -4px rgba(13, 35, 58, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(13, 35, 58, 0.12), 0 8px 10px -6px rgba(13, 35, 58, 0.06);
  --shadow-glow: 0 0 25px rgba(0, 132, 214, 0.25);

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset y Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  background-color: #f4f7fb;
  color: var(--slate-800);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* Layout Estructura */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.app-sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(180deg, var(--primary-950) 0%, var(--primary-900) 100%);
  color: var(--white);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition-normal);
}

.app-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.app-topbar {
  height: var(--topbar-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 30;
}

.app-content {
  flex: 1;
  padding: 2rem;
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
}

.app-footer {
  padding: 1.25rem 2rem;
  background: var(--white);
  border-top: 1px solid var(--slate-200);
  font-size: 0.875rem;
  color: var(--slate-500);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Sidebar Elements */
.sidebar-brand {
  padding: 1.5rem 1.5rem 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sidebar-logo {
  max-height: 60px;
  width: auto;
  /*filter: brightness(0) invert(1);*/
}

.brand-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--primary-400);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar-nav {
  flex: 1;
  padding: 1.25rem 1rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-section-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate-400);
  padding: 0.75rem 0.75rem 0.25rem;
  font-weight: 700;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.75rem 1rem;
  color: var(--slate-300);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link i {
  font-size: 1.25rem;
  color: var(--slate-400);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
}

.nav-link:hover i {
  color: var(--primary-400);
}

.nav-link.active {
  background: linear-gradient(90deg, var(--primary-500) 0%, #0284c7 100%);
  color: var(--white);
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 132, 214, 0.35);
}

.nav-link.active i {
  color: var(--white);
}

.sidebar-user {
  padding: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.2);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  overflow: hidden;
}

.user-avatar {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.user-details {
  overflow: hidden;
}

.user-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role-badge {
  display: inline-block;
  font-size: 0.7rem;
  color: var(--primary-400);
  text-transform: capitalize;
}

.btn-logout {
  color: var(--slate-400);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-logout:hover {
  color: var(--danger-500);
  background: rgba(239, 68, 68, 0.15);
}

/* Header Elements */
.header-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--slate-500);
}

.header-breadcrumb .current {
  color: var(--slate-900);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.period-badge-top {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--slate-100);
  border: 1px solid var(--slate-200);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--slate-700);
}

.period-badge-top.closed {
  background: var(--danger-50);
  border-color: var(--danger-100);
  color: var(--danger-600);
}

.period-badge-top.open {
  background: var(--success-50);
  border-color: var(--success-100);
  color: var(--success-600);
}

/* Tarjetas y Contenedores */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--slate-300);
}

.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--slate-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--slate-900);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-body {
  padding: 1.5rem;
}

/* Responsive Grid */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--white);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary-500);
}

.stat-card.success::before { background: var(--success-500); }
.stat-card.warning::before { background: var(--warning-500); }
.stat-card.danger::before  { background: var(--danger-500); }

.stat-info .stat-label {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--slate-500);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.stat-info .stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.02em;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-50);
  color: var(--primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-card.success .stat-icon { background: var(--success-50); color: var(--success-600); }
.stat-card.warning .stat-icon { background: var(--warning-50); color: var(--warning-600); }
.stat-card.danger .stat-icon  { background: var(--danger-50); color: var(--danger-600); }

/* Responsive layout */
@media (max-width: 1024px) {
  .app-sidebar {
    transform: translateX(-100%);
  }
  .app-sidebar.open {
    transform: translateX(0);
  }
  .app-main {
    margin-left: 0;
  }
}