/* Base Variables and Reset */
:root {
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border-color: #334155;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-darker);
    color: var(--text-primary);
    overflow-x: hidden;
}

.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-dark);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.sidebar-header span {
    color: var(--primary-color);
    font-weight: 300;
}

.nav-links {
    list-style: none;
    padding: 20px 0;
}

.nav-links li {
    margin-bottom: 5px;
}

.nav-links a {
    display: flex;
    align-items: center;
    padding: 12px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a i {
    width: 20px;
    margin-right: 15px;
    font-size: 1.1rem;
}

.nav-links li.active a,
.nav-links a:hover {
    color: var(--text-primary);
    background-color: rgba(59, 130, 246, 0.1);
    border-right: 3px solid var(--primary-color);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}

/* Topbar */
.topbar {
    height: 70px;
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    position: sticky;
    top: 0;
    z-index: 90;
}

.search-bar {
    position: relative;
    width: 300px;
}

.search-bar i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-bar input {
    width: 100%;
    padding: 10px 10px 10px 40px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
}

.search-bar input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.notification-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.notification-btn:hover {
    color: var(--text-primary);
}

.badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--danger);
    color: white;
    font-size: 0.6rem;
    font-weight: bold;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.admin-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.admin-profile img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

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

/* Content Views */
.content-wrapper {
    padding: 30px;
}

.hidden {
    display: none !important;
}

.page-title {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 25px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    border-color: var(--primary-color);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.stat-card:nth-child(2) .stat-icon {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.stat-card:nth-child(3) .stat-icon {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.stat-card:nth-child(4) .stat-icon {
    background-color: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}

.stat-details p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 5px;
}

.stat-details h3 {
    font-size: 1.8rem;
    font-weight: 700;
}

/* Dashboard Section */
.dashboard-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 0.9rem;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--border-color);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    margin-right: 15px;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 95;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

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

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

.data-table th, .data-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
}

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

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

/* Status Selects & Badges */
.status-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-block;
}

.status-badge.processing { background-color: rgba(245, 158, 11, 0.15); color: var(--warning); }
.status-badge.shipped { background-color: rgba(59, 130, 246, 0.15); color: var(--primary-color); }
.status-badge.delivered { background-color: rgba(16, 185, 129, 0.15); color: var(--success); }
.status-badge.cancelled { background-color: rgba(239, 68, 68, 0.15); color: var(--danger); }
.status-badge.refunded { background-color: rgba(139, 92, 246, 0.15); color: #8b5cf6; }
.status-badge.returned { background-color: rgba(107, 114, 128, 0.15); color: #9ca3af; }

.status-select {
    background-color: var(--bg-darker);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    outline: none;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.status-select:focus {
    border-color: var(--primary-color);
}

/* Actions */
.action-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

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

.placeholder-text {
    color: var(--text-secondary);
    font-style: italic;
}

/* Animations */
.section-fade-in {
    animation: fadeIn 0.5s ease-out;
}

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

/* Toast Notification */
.toast-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 9999;
}

.toast {
    background-color: var(--bg-card);
    border-left: 4px solid var(--success);
    color: white;
    padding: 15px 25px;
    border-radius: 6px;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    gap: 15px;
    animation: slideInRight 0.3s ease forwards;
    opacity: 0;
    transform: translateX(100%);
}

.toast.toast-error { border-left-color: var(--danger); }
.toast.toast-info { border-left-color: var(--primary-color); }

.toast.hiding {
    animation: slideOutRight 0.3s ease forwards;
}

@keyframes slideInRight {
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideOutRight {
    to { opacity: 0; transform: translateX(100%); }
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .search-bar {
        width: 150px;
    }
}

/* Modals and Forms */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-card);
    width: 90%;
    max-width: 500px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 { font-size: 1.2rem; font-weight: 600; }

.close-modal {
    background: none; border: none;
    color: var(--text-secondary);
    font-size: 1.2rem; cursor: pointer;
    transition: var(--transition);
}

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

.modal-body { 
    padding: 25px; 
    overflow-y: auto;
}

.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.4);
}

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

/* ── LOGIN SCREEN ── */
.admin-login-screen {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg-darker);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.admin-login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header img {
    border-radius: 50%;
    margin-bottom: 1rem;
    border: 2px solid var(--primary-color);
}

.login-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}