:root {
    /* Dark Neon Theme (Default) */
    --bg-primary: #050508;
    --bg-secondary: #0a0a0f;
    --bg-card: rgba(15, 15, 25, 0.9);
    --bg-sidebar: #050508;

    /* Neon Colors */
    --neon-cyan: #00f5ff;
    --neon-purple: #bf00ff;
    --neon-pink: #ff00aa;
    --neon-green: #00ff88;
    --neon-orange: #ff6b35;
    --neon-red: #ff3b30;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00f5ff 0%, #bf00ff 100%);
    --gradient-success: linear-gradient(135deg, #00ff88 0%, #00d4aa 100%);
    --gradient-warning: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);

    /* Text */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.85);
    --text-muted: rgba(255, 255, 255, 0.65);

    /* Border */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 245, 255, 0.3);

    /* Shadows */
    --shadow-neon: 0 0 20px rgba(0, 245, 255, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);

    /* Sidebar */
    --sidebar-width: 260px;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-sidebar: #ffffff;

    /* Adjusted Colors for Light */
    --neon-cyan: #0891b2;
    --neon-purple: #7c3aed;
    --neon-pink: #db2777;
    --neon-green: #059669;
    --neon-orange: #ea580c;
    --neon-red: #dc2626;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0891b2 0%, #7c3aed 100%);
    --gradient-success: linear-gradient(135deg, #059669 0%, #10b981 100%);
    --gradient-warning: linear-gradient(135deg, #ea580c 0%, #f97316 100%);

    /* Text */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    /* Border */
    --border-color: rgba(0, 0, 0, 0.1);
    --border-glow: rgba(8, 145, 178, 0.3);

    /* Shadows */
    --shadow-neon: 0 0 20px rgba(8, 145, 178, 0.2);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    z-index: 9999;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-neon);
}

.theme-toggle i {
    transition: transform 0.3s ease;
}

[data-theme="light"] .theme-toggle {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

/* Light Theme Additional Fixes */
[data-theme="light"] .sidebar {
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .sidebar-brand-text {
    color: var(--text-primary);
    background: none;
    -webkit-text-fill-color: var(--text-primary);
}

[data-theme="light"] .top-header {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .card {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
}

[data-theme="light"] .data-table tr:hover {
    background: rgba(0, 0, 0, 0.02) !important;
}

[data-theme="light"] .form-control,
[data-theme="light"] .form-select {
    background: rgba(0, 0, 0, 0.02) !important;
    color: var(--text-primary) !important;
}

[data-theme="light"] .form-control::placeholder {
    color: rgba(0, 0, 0, 0.4) !important;
}

[data-theme="light"] .modal-header {
    background: var(--gradient-primary) !important;
    color: white !important;
}

[data-theme="light"] .btn-primary {
    color: white !important;
}

[data-theme="light"] .menu-item:hover {
    background: rgba(8, 145, 178, 0.08);
}

[data-theme="light"] .menu-item.active {
    background: rgba(8, 145, 178, 0.12);
}

[data-theme="light"] .stat-mini:hover {
    box-shadow: 0 8px 30px rgba(8, 145, 178, 0.15);
}

/* Light Theme - Card & Stats Fixes */
[data-theme="light"] .card {
    background-color: #ffffff !important;
    border-color: rgba(0, 0, 0, 0.1) !important;
}

[data-theme="light"] .stat-card {
    background: #ffffff !important;
    border-color: rgba(0, 0, 0, 0.1) !important;
}

[data-theme="light"] .stat-card h3,
[data-theme="light"] .stat-card .stat-value,
[data-theme="light"] .stat-card .stat-label,
[data-theme="light"] .stat-card span,
[data-theme="light"] .stat-card div {
    color: var(--text-primary) !important;
}

[data-theme="light"] .stat-card .text-secondary,
[data-theme="light"] .stat-card small {
    color: var(--text-secondary) !important;
}

/* Light Theme - Table Fixes */
[data-theme="light"] .table,
[data-theme="light"] .data-table {
    color: var(--text-primary) !important;
}

[data-theme="light"] .table> :not(caption)>*>*,
[data-theme="light"] .data-table td,
[data-theme="light"] .data-table th {
    color: var(--text-primary) !important;
    background-color: transparent !important;
    border-bottom-color: rgba(0, 0, 0, 0.1) !important;
}

[data-theme="light"] .data-table th {
    background: rgba(0, 0, 0, 0.03) !important;
    color: var(--text-secondary) !important;
}

[data-theme="light"] .data-table tr:hover td {
    background-color: rgba(8, 145, 178, 0.08) !important;
}

/* Light Theme - Text Overrides */
[data-theme="light"] .text-secondary {
    color: var(--text-secondary) !important;
}

[data-theme="light"] .text-white {
    color: var(--text-primary) !important;
}

[data-theme="light"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="light"] h1,
[data-theme="light"] h2,
[data-theme="light"] h3,
[data-theme="light"] h4,
[data-theme="light"] h5,
[data-theme="light"] h6 {
    color: var(--text-primary) !important;
}

/* Light Theme - Badge Fixes */
[data-theme="light"] .badge.bg-success,
[data-theme="light"] .badge.bg-danger,
[data-theme="light"] .badge.bg-warning,
[data-theme="light"] .badge.bg-info,
[data-theme="light"] .badge.bg-primary {
    color: white !important;
}

/* Light Theme - Stats Grid */
[data-theme="light"] .stats-grid .stat-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%) !important;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
}

/* Sidebar Styling */
.sidebar {
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
}

.sidebar-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
}

.sidebar-brand-icon {
    background: var(--gradient-primary);
}

.sidebar-brand-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.menu-label {
    color: var(--text-muted);
}

.menu-item {
    color: var(--text-secondary);
}

.menu-item:hover {
    background: rgba(0, 245, 255, 0.05);
    color: var(--neon-cyan);
    border-left: 3px solid var(--neon-cyan);
}

.menu-item.active {
    background: rgba(0, 245, 255, 0.1);
    color: var(--neon-cyan);
    border-left: 3px solid var(--neon-cyan);
}

/* Submenu Styling */
.menu-submenu {
    display: none;
    background: rgba(0, 0, 0, 0.2);
}

.menu-submenu.active {
    display: block;
}

.submenu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem 0.75rem 3.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.submenu-item:hover {
    background: rgba(0, 245, 255, 0.05);
    color: var(--neon-cyan);
}

.submenu-item.active {
    background: rgba(0, 245, 255, 0.1);
    color: var(--neon-cyan);
}

.menu-arrow {
    transition: transform 0.3s ease;
}

.menu-item-parent.open .menu-arrow {
    transform: rotate(90deg);
}

/* Top Header Styling */
.top-header {
    background: var(--bg-secondary) !important;
    border-bottom: 1px solid var(--border-color) !important;
    color: var(--text-primary);
}

/* Card Styling */
.card {
    background: var(--bg-card) !important;
    border: 1px solid var(--border-color) !important;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-card);
}

.card-header {
    background: transparent !important;
    border-bottom: 1px solid var(--border-color) !important;
}

.card-title {
    color: var(--text-primary) !important;
}

.card-title i {
    color: var(--neon-cyan) !important;
}

/* Stats Styling */
.stat-mini {
    background: var(--bg-card) !important;
    border: 1px solid var(--border-color) !important;
    transition: all 0.3s ease;
}

.stat-mini:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-neon);
    transform: translateY(-2px);
}

.stat-mini-value {
    color: var(--text-primary) !important;
}

.stat-mini-label {
    color: var(--text-secondary) !important;
}

/* Table Styling */
.data-table {
    border-collapse: collapse;
}

.data-table th {
    color: var(--text-secondary) !important;
    border-bottom: 1px solid var(--border-color) !important;
}

.data-table td {
    border-bottom: 1px solid var(--border-color) !important;
    color: var(--text-primary);
}

.data-table tr:hover {
    background: rgba(255, 255, 255, 0.02) !important;
}

/* Button & Badge Styling */
.btn-primary {
    background: var(--gradient-primary) !important;
    border: none !important;
}

.btn-primary:hover {
    box-shadow: var(--shadow-neon);
}

.status-badge.paid {
    background: rgba(0, 255, 136, 0.15) !important;
    color: var(--neon-green) !important;
}

.status-badge.sent {
    background: rgba(255, 107, 53, 0.15) !important;
    color: var(--neon-orange) !important;
}

.status-badge.overdue {
    background: rgba(255, 0, 170, 0.15) !important;
    color: var(--neon-pink) !important;
}

/* Form Controls */
.form-control,
.form-select {
    background: rgba(255, 255, 255, 0.03) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
}

.form-control:focus,
.form-select:focus {
    box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1) !important;
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.4) !important;
}

.form-text {
    color: var(--text-muted) !important;
    font-weight: 500;
}

.modal-header {
    background: rgba(10, 10, 15, 0.95) !important;
    border-bottom: 2px solid var(--border-color) !important;
}

.modal-title {
    font-weight: 700;
    letter-spacing: 0.5px;
}

.btn {
    font-weight: 600;
    letter-spacing: 0.3px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Color Utilities */
.text-cyan {
    color: var(--neon-cyan) !important;
}

.text-green {
    color: var(--neon-green) !important;
}

.text-purple {
    color: var(--neon-purple) !important;
}

.text-orange {
    color: var(--neon-orange) !important;
}

.text-pink {
    color: var(--neon-pink) !important;
}

.text-red {
    color: var(--neon-red) !important;
}

/* Backdrop Overlay */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 998;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.show {
    display: block;
    opacity: 1;
}

/* Bottom Navigation for Mobile Admin */
.bottom-nav-admin {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 65px;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    display: none;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
    z-index: 1001;
    padding: 0 10px;
    backdrop-filter: blur(10px);
}

.bottom-nav-admin .nav-item-admin {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 8px 5px;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
    position: relative;
    border-radius: 12px;
    margin: 0 2px;
}

.bottom-nav-admin .nav-item-admin:hover {
    background: rgba(0, 245, 255, 0.05);
    color: var(--neon-cyan);
}

.bottom-nav-admin .nav-item-admin.active {
    color: var(--neon-cyan);
}

.bottom-nav-admin .nav-item-admin.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 0 0 3px 3px;
}

.bottom-nav-admin .nav-item-admin i {
    font-size: 1.3rem;
    margin-bottom: 4px;
    transition: transform 0.3s;
}

.bottom-nav-admin .nav-item-admin.active i {
    transform: scale(1.15);
    filter: drop-shadow(0 0 8px var(--neon-cyan));
}

.bottom-nav-admin .nav-item-admin span {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* Show bottom nav on mobile */
@media (max-width: 992px) {
    .bottom-nav-admin {
        display: flex;
    }

    /* Add padding to main content to prevent overlap */
    .main-content {
        padding-bottom: 80px;
    }

    .page-content {
        padding-bottom: 20px;
    }
}

/* Light theme adjustments */
[data-theme="light"] .bottom-nav-admin {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .bottom-nav-admin .nav-item-admin:hover {
    background: rgba(8, 145, 178, 0.08);
}