/* ========================================
   Layer21 - Combined Stylesheet
   ======================================== */

/* Global Styles & Font */
* {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    scroll-behavior: smooth;
  }
  
  /* CSS Variables */
  :root {
    --brand-primary: #0ea5e9;
    --brand-dark: #0f172a;
    --brand-teal: #14b8a6;
    --brand-accent: #06b6d4;
    --surface: #ffffff;
    --surface-hover: #f8fafc;
    --border: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  }
  
  /* Body */
  body {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 100vh;
    color: var(--text-primary);
  }
  
  /* ========================================
     Animations
     ======================================== */
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  
  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  
  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
  }
  
  @keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
  }
  
  .fade-in { 
    animation: fadeIn 0.4s ease-out; 
  }
  
  .slide-down { 
    animation: slideDown 0.3s ease-out; 
  }
  
  /* ========================================
     Header & Navigation
     ======================================== */
  .site-nav {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
  }
  
  .logo-badge {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: var(--shadow-md);
  }
  
  /* ========================================
     Submission Ticker
     ======================================== */
  .submission-ticker {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    backdrop-filter: blur(20px);
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    animation: slideDown 0.4s ease-out;
  }
  
  /* ========================================
     Status Badges
     ======================================== */
  .status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.025em;
    transition: all 0.2s;
  }
  
  .status-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
  }
  
  /* Status Badge Variants */
  .status-paid {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #065f46;
  }
  
  .status-paid::before {
    background: #10b981;
  }
  
  .status-pending {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
  }
  
  .status-pending::before {
    background: #f59e0b;
  }
  
  .status-overdue {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #991b1b;
  }
  
  .status-overdue::before {
    background: #ef4444;
  }
  
  .status-active {
    background: #dcfce7;
    color: #15803d;
    border: 1px solid #86efac;
  }
  
  .status-active::before {
    background: #22c55e;
  }
  
  .status-disabled {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
  }
  
  /* ========================================
     Tables
     ======================================== */
  .modern-table {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 10px 40px rgba(0, 0, 0, 0.03);
    border: 1px solid #f1f5f9;
  }
  
  .modern-table table {
    width: 100%;
    border-collapse: collapse;
  }
  
  .modern-table thead {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    border-bottom: 2px solid var(--border);
  }
  
  .modern-table th {
    padding: 16px 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
  }
  
  .modern-table td {
    padding: 16px 20px;
    font-size: 0.875rem;
    border-bottom: 1px solid #f1f5f9;
  }
  
  .modern-table tbody tr {
    transition: all 0.2s;
  }
  
  .modern-table tbody tr:hover {
    background: var(--surface-hover);
    transform: scale(1.001);
  }
  
  .table-row {
    transition: all 0.2s ease;
  }
  
  .table-row:hover {
    background: linear-gradient(to right, #f8fafc, #f1f5f9);
    transform: translateX(2px);
  }
  
  /* ========================================
     Buttons
     ======================================== */
  .btn-primary {
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--brand-teal) 0%, var(--brand-accent) 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
  }
  
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(20, 184, 166, 0.4);
  }
  
  .btn-secondary {
    padding: 8px 16px;
    background: white;
    color: #475569;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all 0.2s;
  }
  
  .btn-secondary:hover {
    background: var(--surface-hover);
    border-color: #cbd5e1;
  }
  
  /* ========================================
     Search Input
     ======================================== */
  .search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
  }
  
  .search-icon {
    position: absolute;
    left: 14px;
    color: #94a3b8;
    pointer-events: none;
  }
  
  .search-input {
    padding: 10px 14px 10px 42px;
    border: 1.5px solid var(--border);
    border-radius: 12px;
    background: white;
    font-size: 0.875rem;
    transition: all 0.2s;
    min-width: 280px;
  }
  
  .search-input:focus {
    outline: none;
    border-color: var(--brand-teal);
    box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.1);
  }
  
  /* ========================================
     Stats Cards
     ======================================== */
  .stat-card {
    background: white;
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    transition: all 0.3s;
  }
  
  .stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
  }
  
  .stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--brand-teal), var(--brand-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  
  /* ========================================
     Modals
     ======================================== */
  .modal-overlay {
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(4px);
  }
  
  .modal-content {
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    max-height: 90vh;
    overflow-y: auto;
  }
  
  /* ========================================
     Forms
     ======================================== */
  .dropdown-form {
    min-width: 480px;
    max-width: 520px;
  }
  
  /* ========================================
     Flash Messages
     ======================================== */
  .flash-message {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 0.8125rem;
    font-weight: 500;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideDown 0.3s ease-out;
  }
  
  .flash-success {
    background: #dcfce7;
    color: #15803d;
    border: 1px solid #86efac;
  }
  
  .flash-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
  }
  
  .flash-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
  }
  
  /* ========================================
     Logs
     ======================================== */
  .log-item {
    padding: 12px 16px;
    border-radius: 10px;
    background: var(--surface-hover);
    border-left: 3px solid transparent;
    transition: all 0.2s;
  }
  
  .log-item:hover {
    background: white;
    border-left-color: var(--brand-teal);
    box-shadow: var(--shadow-sm);
  }
  
  .log-success {
    border-left-color: #10b981;
  }
  
  .log-error {
    border-left-color: #ef4444;
  }
  
  .log-warning {
    border-left-color: #f59e0b;
  }
  
  /* ========================================
     Pagination
     ======================================== */
  .pagination-btn {
    padding: 8px 14px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: #475569;
    background: white;
    transition: all 0.2s;
    cursor: pointer;
    text-decoration: none;
  }
  
  .pagination-btn:hover:not(.active) {
    background: var(--surface-hover);
    border-color: var(--brand-teal);
  }
  
  .pagination-btn.active {
    background: linear-gradient(135deg, var(--brand-teal), var(--brand-accent));
    color: white;
    border-color: transparent;
  }
  
  /* ========================================
     Avatars
     ======================================== */
  .user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    object-fit: cover;
    border: 2px solid #f1f5f9;
  }
  
  /* ========================================
     Loading States
     ======================================== */
  .skeleton {
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
  }
  
  /* ========================================
     Scrollbar
     ======================================== */
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  
  ::-webkit-scrollbar-track {
    background: #f1f5f9;
  }
  
  ::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 5px;
  }
  
  ::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
  }
  
  /* ========================================
     Responsive Styles
     ======================================== */
  @media (max-width: 768px) {
    .stat-value {
      font-size: 1.5rem;
    }
  
    .modern-table th,
    .modern-table td {
      padding: 12px 16px;
    }
  
    .dropdown-form {
      min-width: 100%;
      max-width: 100%;
    }
  
    .search-input {
      min-width: 200px;
    }
  }