/* ==========================================================================
   LAYOUT, CONTAINERS, NAVIGATION & DASHBOARD SHELLS
   Enhanced with Modern Colorful Accents, Sticky Admin Sidebars & Smooth Motion
   ========================================================================== */

.app-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.main-content {
  flex: 1 0 auto;
  padding-top: var(--space-8);
  padding-bottom: var(--space-12);
}

/* Header & Navbar */
.app-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  height: var(--navbar-height);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  transition: background-color var(--transition-normal), border-color var(--transition-normal), box-shadow 0.25s ease;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.app-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, rgba(99, 102, 241, 0.35) 50%, transparent 100%);
  opacity: 0.8;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-6);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.navbar-brand span.logo-accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, #ec4899 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: color var(--transition-fast), transform 0.15s ease;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  text-decoration: none;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Footer */
.app-footer {
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--color-surface) 0%, rgba(99, 102, 241, 0.03) 100%);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-12);
  padding-bottom: var(--space-8);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  position: relative;
}

.app-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #6366f1, #06b6d4, #10b981, #f59e0b);
  opacity: 0.7;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-col h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.footer-col ul li {
  margin-bottom: var(--space-2);
}

.footer-col ul li a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s ease, transform 0.15s ease;
  display: inline-block;
}

.footer-col ul li a:hover {
  color: var(--color-primary);
  transform: translateX(2px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   DASHBOARD & ADMIN SHELL LAYOUT
   ========================================================================== */
.dashboard-layout {
  display: flex;
  gap: var(--space-8);
  align-items: flex-start;
}

.dashboard-sidebar {
  position: sticky;
  top: calc(var(--navbar-height) + var(--space-4));
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.04) 0%, var(--color-surface) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
  backdrop-filter: var(--backdrop-filter);
  overflow: hidden;
  max-height: calc(100vh - var(--navbar-height) - var(--space-8));
  overflow-y: auto;
}

.dashboard-sidebar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #6366f1, #06b6d4, #10b981);
}

.dashboard-main {
  flex: 1 1 auto;
  min-width: 0;
}

.sidebar-menu {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.sidebar-link svg {
  transition: transform 0.2s ease, stroke 0.2s ease;
  flex-shrink: 0;
}

.sidebar-link:hover {
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.12) 0%, rgba(99, 102, 241, 0.04) 100%);
  color: var(--color-primary);
  transform: translateX(4px);
  text-decoration: none;
}

.sidebar-link:hover svg {
  transform: scale(1.1);
  stroke: var(--color-primary);
}

.sidebar-link.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, #8b5cf6 100%);
  color: #FFFFFF !important;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.sidebar-link.active svg {
  stroke: #FFFFFF !important;
}

/* Grid Utilities */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--grid-gap); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--grid-gap); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--grid-gap); }