/* ========================================
   1. VARIABLES & RESET
   ======================================== */
:root {
    /* Brand & Accent Colors */
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #93c5fd;
    --secondary: #0f172a;
    
    /* Semantic Colors */
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #06b6d4;
    --purple: #8b5cf6;
    --purple-dark: #7c3aed;

    /* Base Colors */
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #0f172a;
    --text-light: #64748b;
    --border: #e2e8f0;

    /* Elevation & Aesthetics */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 6px;
    --radius: 12px;
    --radius-lg: 16px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ========================================
   2. LAYOUT & CONTAINERS
   ======================================== */
.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 24px;
}

/* ========================================
   3. LOGIN PAGE
   ======================================== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top right, #1e293b, var(--secondary));
    padding: 20px;
}

.login-card {
    background: var(--card);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 420px;
    width: 100%;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-icon {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 12px;
}

.login-header h1 {
    font-size: 26px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 6px;
}

.login-header p {
    color: var(--text-light);
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--secondary);
    font-size: 14px;
}

.login-form label i {
    margin-right: 8px;
    color: var(--primary);
}

.login-form input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    transition: var(--transition);
}

.login-form input[type="password"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    color: var(--text-light);
    font-size: 13px;
}

/* ========================================
   4. DASHBOARD HEADER
   ======================================== */
.dashboard-header {
    background: var(--card);
    border-radius: var(--radius);
    padding: 20px 28px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-icon {
    font-size: 32px;
    color: var(--primary);
}

.header-left h1 {
    font-size: 22px;
    font-weight: 700;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-badge {
    background: var(--bg);
    padding: 8px 16px;
    border-radius: 9999px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border);
}

.user-badge i {
    margin-right: 8px;
    color: var(--primary);
}

/* ========================================
   5. STATS CARDS
   ======================================== */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
    flex-shrink: 0;
}

.stat-icon.blue { background: var(--primary); }
.stat-icon.green { background: var(--success); }
.stat-icon.purple { background: var(--purple); }
.stat-icon.orange { background: var(--warning); }

.stat-info h3 {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.2;
}

.stat-info p {
    color: var(--text-light);
    font-size: 13px;
    margin: 0;
}

/* Storage Stats Gradient Variant */
.stat-card-gradient,
.stat-card[style*="grid-column: span 2;"] {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    border: none;
}

.stat-card-gradient .stat-info p,
.stat-card[style*="grid-column: span 2;"] .stat-info p {
    color: rgba(255, 255, 255, 0.85);
}

.stat-card-gradient .stat-info h3,
.stat-card[style*="grid-column: span 2;"] .stat-info h3 {
    color: #ffffff;
}

.stat-card-gradient .stat-info div,
.stat-card[style*="grid-column: span 2;"] .stat-info div {
    color: rgba(255, 255, 255, 0.75) !important;
}

.stat-card-gradient .stat-icon,
.stat-card[style*="grid-column: span 2;"] .stat-icon {
    background: rgba(255, 255, 255, 0.2) !important;
    color: #ffffff !important;
}

/* ========================================
   6. CONTROLS & DATE FILTERS
   ======================================== */
.controls-container {
    background: var(--card);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 24px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.search-section {
    flex: 1;
    min-width: 200px;
}

.search-box {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.search-box input {
    flex: 1;
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    min-width: 200px;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.actions-section {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.record-count {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-light);
    padding: 8px 14px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.date-filter-section {
    margin: 12px 0 0 0;
    width: 100%;
}

.date-filter-box {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    background: var(--bg);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.date-filter-box i {
    color: var(--primary);
    font-size: 16px;
}

.date-filter-box input[type="date"] {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: var(--card);
    min-width: 150px;
    transition: var(--transition);
}

.date-filter-box input[type="date"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* ========================================
   7. BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    color: white;
}

.btn i {
    font-size: 14px;
}

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

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

.btn-primary { background: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); }

.btn-secondary { background: var(--text-light); }
.btn-secondary:hover { background: var(--secondary); }

.btn-success { background: var(--success); }
.btn-success:hover { background: #059669; }

.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #dc2626; }

.btn-info { background: var(--info); }
.btn-info:hover { background: #0891b2; }

.btn-purple { background: var(--purple); }
.btn-purple:hover { background: var(--purple-dark); }

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-xs {
    padding: 4px 8px;
    font-size: 11px;
}

.btn-full {
    width: 100%;
    padding: 12px;
    font-size: 15px;
}

#deleteAllBtn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ========================================
   8. DATA TABLE
   ======================================== */
.table-container {
    background: var(--card);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--bg);
}

thead th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    vertical-align: middle;
}

tbody tr {
    transition: background 0.15s ease;
}

tbody tr:hover {
    background: #f1f5f9;
}

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

.loading-row {
    text-align: center;
    padding: 40px !important;
    color: var(--text-light);
}

.loading-row i {
    font-size: 24px;
    margin-right: 10px;
}

/* Table Text Variations */
.amount-high { font-weight: 700; color: var(--success); }
.amount-medium { font-weight: 600; color: var(--warning); }
.amount-low { font-weight: 500; color: var(--text-light); }

.action-buttons {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

/* Status Badges */
.badge {
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.status-pending { background: #fef3c7; color: #d97706; }
.status-approved { background: #d1fae5; color: #059669; }
.status-rejected { background: #fee2e2; color: #dc2626; }

/* Code / User ID styling inside tables */
.user-id-badge {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--secondary);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 12px;
}

/* ========================================
   9. PAGINATION
   ======================================== */
.pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

#pageInfo {
    font-size: 13px;
    color: var(--text-light);
    padding: 8px 14px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.page-size-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.page-size-control label {
    font-size: 13px;
    color: var(--text-light);
}

.page-size-control select {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: var(--card);
    cursor: pointer;
}

/* ========================================
   10. MODALS
   ======================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

.modal-content {
    background: var(--card);
    margin: 60px auto;
    max-width: 580px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 85vh;
    overflow-y: auto;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-header h2 i {
    margin-right: 8px;
    color: var(--primary);
}

.close {
    font-size: 24px;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
    line-height: 1;
}

.close:hover {
    color: var(--danger);
}

.modal-body {
    padding: 24px;
}

.modal-actions {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background: var(--bg);
}

.delete-modal .modal-body {
    text-align: center;
    padding: 32px 24px;
}

.delete-modal .delete-warning {
    color: var(--danger);
    font-weight: 600;
    margin-top: 10px;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideDown {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ========================================
   11. FORMS
   ======================================== */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 8px 0;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 6px;
    color: var(--secondary);
}

.form-group label i {
    margin-right: 6px;
    color: var(--primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* ========================================
   12. ALERTS & TOASTS
   ======================================== */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--secondary);
    color: white;
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 2000;
    max-width: 380px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.toast-icon { font-size: 18px; }
.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: var(--danger); }
.toast.info .toast-icon { color: var(--info); }

/* ========================================
   13. EDIT PAGE
   ======================================== */
.edit-container {
    max-width: 680px;
    margin: 40px auto;
}

.edit-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.edit-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.edit-header h1 {
    font-size: 20px;
    font-weight: 700;
}

.edit-header h1 i {
    color: var(--primary);
    margin-right: 8px;
}

.edit-actions {
    margin-top: 24px;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ========================================
   14. RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 1024px) {
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 14px;
    }

    .header-content {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }

    .header-left, .header-right {
        justify-content: center;
    }

    .controls-container {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        flex-direction: column;
    }

    .search-box input {
        width: 100%;
        min-width: unset;
    }

    .search-box .btn {
        width: 100%;
    }

    .actions-section {
        justify-content: center;
    }

    .date-filter-box {
        flex-direction: column;
        align-items: stretch;
    }

    .date-filter-box input[type="date"],
    .date-filter-box .btn-sm {
        width: 100%;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .modal-content {
        margin: 20px 12px;
        max-width: calc(100% - 24px);
    }

    .pagination-container {
        flex-direction: column;
        align-items: center;
    }

    table {
        font-size: 13px;
    }

    thead th, tbody td {
        padding: 10px 12px;
    }

    .toast {
        bottom: 12px;
        right: 12px;
        left: 12px;
        max-width: unset;
    }

    .login-card {
        padding: 28px 20px;
    }
}

@media (max-width: 480px) {
    .stats-container {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 16px;
    }

    .stat-info h3 {
        font-size: 18px;
    }

    .header-left h1 {
        font-size: 18px;
    }
}