:root {
    --bg-color: #0b0f19;
    --sidebar-bg: #111827;
    --card-bg: rgba(17, 24, 39, 0.7);
    --card-hover: rgba(31, 41, 55, 0.8);
    --text-color: #f3f4f6;
    --text-muted: #9ca3af;
    --primary: #3b82f6;
    --primary-glow: rgba(59, 130, 246, 0.15);
    --primary-hover: #2563eb;
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.15);
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.15);
    --warning: #f59e0b;
    --border: rgba(255, 255, 255, 0.06);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.light-theme {
    --bg-color: #f3f4f6;
    --sidebar-bg: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.8);
    --card-hover: rgba(243, 244, 246, 0.9);
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --primary: #2563eb;
    --primary-glow: rgba(37, 99, 235, 0.15);
    --primary-hover: #1d4ed8;
    --border: rgba(0, 0, 0, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 0% 0%, rgba(59, 130, 246, 0.08), transparent 35%),
        radial-gradient(circle at 100% 100%, rgba(99, 102, 241, 0.05), transparent 40%);
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.light-theme {
    background-image: 
        radial-gradient(circle at 0% 0%, rgba(37, 99, 235, 0.05), transparent 35%),
        radial-gradient(circle at 100% 100%, rgba(99, 102, 241, 0.03), transparent 40%);
}

/* Sidebar Styling */
.sidebar {
    width: 280px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 24px;
    position: fixed;
    height: 100vh;
    z-index: 10;
    transition: var(--transition);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.brand-logo {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), #6366f1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 20px;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-name {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-color);
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.menu-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
}

.menu-item.active a, .menu-item a:hover {
    color: var(--text-color);
    background-color: rgba(255, 255, 255, 0.05);
}

body.light-theme .menu-item.active a, body.light-theme .menu-item a:hover {
    background-color: rgba(0, 0, 0, 0.03);
}

.menu-item.active a {
    background-color: var(--primary-glow);
    color: var(--primary);
    border-left: 3px solid var(--primary);
    border-radius: 0 8px 8px 0;
    padding-left: 13px;
}

.sidebar-footer {
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

/* Main Content Layout */
.main-wrapper {
    margin-left: 280px;
    flex-grow: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    height: 70px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 20px;
    padding: 0 40px;
    background-color: rgba(11, 15, 25, 0.1);
    backdrop-filter: blur(8px);
}

body.light-theme .top-bar {
    background-color: rgba(255, 255, 255, 0.5);
}

.admin-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    font-weight: 600;
    border: 2px solid var(--border);
}

body.light-theme .admin-avatar {
    background-color: rgba(0, 0, 0, 0.05);
}

.content-container {
    padding: 40px;
    max-width: 1300px;
    width: 100%;
    margin: 0 auto;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.page-title h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.page-title p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Stats Cards Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.12);
    background: var(--card-hover);
}

body.light-theme .stat-card:hover {
    border-color: rgba(0, 0, 0, 0.12);
}

.stat-info h3 {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 8px;
}

.stat-info .stat-number {
    font-size: 28px;
    font-weight: 700;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon.primary { background-color: var(--primary-glow); color: var(--primary); }
.stat-icon.success { background-color: var(--success-glow); color: var(--success); }
.stat-icon.danger { background-color: var(--danger-glow); color: var(--danger); }
.stat-icon.warning { background-color: rgba(245, 158, 11, 0.1); color: var(--warning); }

/* Users Glass Panel */
.panel-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

.search-box {
    position: relative;
    max-width: 320px;
    width: 100%;
}

.search-box input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: rgba(11, 15, 25, 0.2);
    color: var(--text-color);
    outline: none;
    font-size: 14px;
    transition: var(--transition);
}

body.light-theme .search-box input {
    background: rgba(0, 0, 0, 0.02);
}

.search-box input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.search-box i, .search-box svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    width: 16px;
    height: 16px;
}

/* Glass table */
.users-table {
    width: 100%;
    border-collapse: collapse;
}

.users-table th {
    background-color: rgba(255, 255, 255, 0.01);
    padding: 16px 24px;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
}

body.light-theme .users-table th {
    background-color: rgba(0, 0, 0, 0.01);
}

.users-table td {
    padding: 18px 24px;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}

.users-table tbody tr {
    transition: var(--transition);
}

.users-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

body.light-theme .users-table tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.01);
}

/* Badges styling */
.badge {
    padding: 6px 12px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.badge.active { background-color: var(--success-glow); color: var(--success); }
.badge.inactive { background-color: var(--danger-glow); color: var(--danger); }
.badge.admin { background-color: var(--primary-glow); color: var(--primary); }
.badge.user { background-color: rgba(255, 255, 255, 0.08); color: var(--text-muted); }
body.light-theme .badge.user { background-color: rgba(0, 0, 0, 0.05); }

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    text-decoration: none;
}

.btn i, .btn svg {
    pointer-events: none;
}

.btn-primary {
    background-color: var(--primary);
    color: white !important;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.06);
    color: var(--text-color);
    border: 1px solid var(--border);
}

body.light-theme .btn-secondary {
    background-color: rgba(0, 0, 0, 0.03);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

body.light-theme .btn-secondary:hover {
    background-color: rgba(0, 0, 0, 0.06);
}

.btn-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background-color: var(--danger);
    color: white !important;
    box-shadow: 0 4px 14px var(--danger-glow);
}

.btn-icon-only {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.actions {
    display: flex;
    gap: 8px;
}

/* Modals glass design */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(3, 7, 18, 0.85);
    backdrop-filter: blur(12px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

body.light-theme .modal-overlay {
    background: rgba(243, 244, 246, 0.8);
}

.modal-content {
    background: var(--sidebar-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    width: 100%;
    max-width: 460px;
    padding: 32px;
    transform: translateY(30px);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 700;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.close-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: white;
}

body.light-theme .close-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: black;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: rgba(11, 15, 25, 0.2);
    color: var(--text-color);
    outline: none;
    font-size: 14px;
    transition: var(--transition);
}

body.light-theme .form-group input, body.light-theme .form-group select {
    background: rgba(0, 0, 0, 0.02);
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 32px;
}

/* Toast Alerts */
#toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    background: var(--sidebar-bg);
    border: 1px solid var(--border);
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    font-weight: 500;
    min-width: 300px;
    animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards, fadeOut 0.3s cubic-bezier(0.16, 1, 0.3, 1) 2.7s forwards;
    backdrop-filter: blur(8px);
}

.toast.error { border-left: 4px solid var(--danger); }
.toast.success { border-left: 4px solid var(--success); }

@keyframes slideIn {
    from { transform: translateY(-20px) scale(0.95); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

@keyframes fadeOut {
    from { transform: translateY(0) scale(1); opacity: 1; }
    to { transform: translateY(-10px) scale(0.95); opacity: 0; }
}

/* Theme Toggle Button Specific styling */
.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-color);
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--text-muted);
}

body.light-theme .theme-toggle-btn:hover {
    background-color: rgba(0, 0, 0, 0.04);
}

/* Login Page Specific Styling */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    width: 100vw;
    padding: 20px;
    position: relative;
}

.login-card {
    background: var(--sidebar-bg);
    border: 1px solid var(--border);
    border-radius: 24px;
    width: 100%;
    max-width: 420px;
    padding: 48px 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    text-align: center;
    animation: slideIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.login-logo {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), #6366f1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 26px;
    margin: 0 auto 24px auto;
    box-shadow: 0 8px 24px var(--primary-glow);
}

.login-card h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-color);
    letter-spacing: -0.5px;
}

.login-card p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 32px;
}

.login-card .form-group {
    text-align: left;
}

.login-card .btn {
    width: 100%;
    justify-content: center;
    margin-top: 12px;
    padding: 12px;
}

.login-theme-wrapper {
    position: absolute;
    top: 24px;
    right: 24px;
    z-index: 100;
}

/* Responsive Rules */
@media (max-width: 1024px) {
    .sidebar {
        width: 80px;
        padding: 20px 10px;
    }
    .brand-name, .sidebar-footer span, .menu-text {
        display: none;
    }
    .main-wrapper {
        margin-left: 80px;
    }
    .brand {
        justify-content: center;
        padding-bottom: 10px;
    }
    .menu-item a {
        justify-content: center;
        padding: 12px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        width: 260px;
        box-shadow: 20px 0 50px rgba(0, 0, 0, 0.5);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .brand-name, .sidebar-footer span, .menu-text {
        display: inline;
    }
    .close-sidebar-btn {
        display: block !important;
    }
    .main-wrapper {
        margin-left: 0 !important;
    }
    .top-bar {
        padding: 0 20px;
        justify-content: space-between;
    }
    .mobile-menu-btn {
        display: flex !important;
        margin-right: auto;
    }
    .admin-profile {
        margin-left: 16px;
    }
    .content-container {
        padding: 24px 16px;
    }
    .page-header {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }
    .page-header .btn {
        justify-content: center;
    }
    .panel-header {
        flex-direction: column;
        align-items: stretch;
    }
    .search-box {
        max-width: 100%;
    }
}

@media (max-width: 600px) {
    .users-table, .users-table thead, .users-table tbody, .users-table th, .users-table td, .users-table tr {
        display: block;
    }
    .users-table thead {
        display: none;
    }
    .users-table tbody tr {
        border: 1px solid var(--border);
        border-radius: 12px;
        margin-bottom: 16px;
        padding: 16px;
        background: var(--card-bg);
    }
    .users-table td {
        border-bottom: none;
        padding: 8px 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        text-align: right;
    }
    .users-table td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-muted);
        font-size: 13px;
        float: left;
        text-align: left;
    }
    .users-table td:last-child {
        border-top: 1px solid var(--border);
        margin-top: 8px;
        padding-top: 12px;
        justify-content: center;
    }
    .users-table .actions {
        justify-content: center !important;
        width: 100%;
    }
}