:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: rgba(30, 41, 59, 0.7);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-primary: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: rgba(255, 255, 255, 0.1);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --sidebar-width: 260px;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-secondary);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
}

.logo-container {
    padding: 2rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-primary), #60a5fa);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.logo-container h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-container span {
    color: var(--accent-primary);
    font-weight: 300;
}

.menu {
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.menu-item {
    padding: 0.875rem 1rem;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.menu-item i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

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

.menu-item.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
    border-left: 3px solid var(--accent-primary);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.top-header {
    height: 80px;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 90;
}

.top-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.admin-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: var(--bg-secondary);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    border: 1px solid var(--border-color);
}

.admin-profile img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.admin-profile span {
    font-size: 0.875rem;
    font-weight: 500;
}

.content-wrapper {
    padding: 2rem;
    flex: 1;
}

.page-section {
    animation: fadeIn 0.4s ease-out forwards;
}

.page-section.hidden {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.users { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.stat-icon.customers { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.stat-icon.transactions { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.stat-icon.feedbacks { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }

.stat-info h3 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.stat-info h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Panels */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    margin-top: 2rem;
}

.panel-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.panel-body {
    padding: 1.5rem;
}

/* Utilities */
.mt-4 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1.5rem; }
.py-4 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }

.btn {
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: white;
}

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

/* Search Box */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 1rem;
    color: var(--text-secondary);
}

.search-box input {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.625rem 1rem 0.625rem 2.5rem;
    border-radius: 8px;
    width: 250px;
    outline: none;
    transition: border-color 0.2s;
}

.search-box input:focus {
    border-color: var(--accent-primary);
}

/* Table */
.table-responsive {
    overflow-x: auto;
}

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

.data-table th, .data-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: rgba(255, 255, 255, 0.02);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tbody tr {
    transition: background-color 0.2s;
}

.data-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.1);
}

/* Feedback Grid */
.feedback-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 1.5rem;
}

.feedback-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.feedback-card .user-id {
    font-size: 0.75rem;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
    font-family: monospace;
}

.feedback-card .content {
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.feedback-card .date {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: right;
}

/* Spinner */
.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    border-top-color: var(--accent-primary);
    animation: spin 1s ease-in-out infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Connection Status */
.connection-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: rgba(16, 185, 129, 0.1);
    border-radius: 50px;
    color: var(--success);
    font-size: 0.875rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
}

.status-dot.active {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .main-content { margin-left: 0; }
    .top-header { padding: 0 1rem; }
    .content-wrapper { padding: 1rem; }
}

/* Login Screen Styles */
.login-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-primary);
    z-index: 1000;
}

.login-wrapper.hidden {
    display: none;
}

.login-box {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 16px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
}

.login-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.login-logo h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.login-logo span {
    color: var(--accent-primary);
    font-weight: 300;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.input-group input {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.875rem 1rem;
    border-radius: 8px;
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus {
    border-color: var(--accent-primary);
}

.w-100 {
    width: 100%;
}

.text-danger {
    color: var(--danger);
}

.login-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 1.5rem 0;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.login-divider span {
    padding: 0 10px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.btn-google {
    background-color: white;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-weight: 500;
    border: 1px solid #ddd;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.btn-google:hover {
    background-color: #f9f9f9;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.btn-google img {
    width: 18px;
    height: 18px;
}