/* Horizon Merchant - Admin Backend Design System */
:root {
    --admin-primary: #0061C1;
    --admin-primary-hover: #004D99;
    --admin-secondary: #0EA5E9;
    --admin-dark-bg: #0F172A;
    --admin-card-bg: #1E293B;
    --admin-sidebar-bg: #0B132B;
    --admin-border: #334155;
    --admin-text-main: #F8FAFC;
    --admin-text-muted: #94A3B8;
    --admin-success: #10B981;
    --admin-danger: #EF4444;
    --admin-warning: #F59E0B;
    --admin-info: #3B82F6;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.25);
}

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

body {
    background-color: var(--admin-dark-bg);
    color: var(--admin-text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout */
.admin-shell {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.admin-sidebar {
    width: 260px;
    background: var(--admin-sidebar-bg);
    border-right: 1px solid var(--admin-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
}

.admin-brand {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--admin-border);
}

.admin-brand img {
    height: 36px;
    width: auto;
    object-fit: contain;
}

.admin-badge {
    background: var(--admin-primary);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-nav {
    padding: 1.25rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0.85rem 1rem;
    color: var(--admin-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.admin-nav-item:hover, .admin-nav-item.active {
    background: rgba(14, 165, 233, 0.12);
    color: var(--admin-secondary);
}

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

.admin-sidebar-footer {
    padding: 1.25rem;
    border-top: 1px solid var(--admin-border);
}

/* Main Content Area */
.admin-main {
    margin-left: 260px;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.admin-header {
    height: 70px;
    background: var(--admin-card-bg);
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 90;
}

.admin-header-title h1 {
    font-size: 1.35rem;
    font-weight: 700;
}

.admin-header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 12px;
    background: var(--admin-dark-bg);
    border-radius: 30px;
    border: 1px solid var(--admin-border);
}

.admin-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
}

/* Dashboard Body */
.admin-content {
    padding: 2rem;
    flex: 1;
}

/* Stats Cards Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--admin-card-bg);
    border: 1px solid var(--admin-border);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-md);
}

.stat-info .stat-lbl {
    font-size: 0.8rem;
    color: var(--admin-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
    display: block;
}

.stat-info .stat-val {
    font-size: 1.6rem;
    font-weight: 700;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.bg-primary { background: rgba(0, 97, 193, 0.2); color: #38BDF8; }
.bg-success { background: rgba(16, 185, 129, 0.2); color: #34D399; }
.bg-warning { background: rgba(245, 158, 11, 0.2); color: #FBBF24; }
.bg-purple { background: rgba(139, 92, 246, 0.2); color: #A78BFA; }

/* Buttons & Inputs */
.btn {
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-sm);
    border: none;
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary { background: var(--admin-primary); color: #fff; }
.btn-primary:hover { background: var(--admin-primary-hover); }

.btn-success { background: var(--admin-success); color: #fff; }
.btn-success:hover { opacity: 0.9; }

.btn-danger { background: var(--admin-danger); color: #fff; }
.btn-danger:hover { opacity: 0.9; }

.btn-secondary { background: var(--admin-border); color: var(--admin-text-main); }
.btn-secondary:hover { background: #475569; }

.btn-sm { padding: 0.4rem 0.75rem; font-size: 0.8rem; }

/* Data Tables */
.card-panel {
    background: var(--admin-card-bg);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.panel-header h2 {
    font-size: 1.15rem;
    font-weight: 700;
}

.table-wrapper {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.88rem;
}

.data-table th {
    background: rgba(15, 23, 42, 0.6);
    padding: 0.85rem 1rem;
    color: var(--admin-text-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--admin-border);
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--admin-border);
    vertical-align: middle;
}

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

/* Status Badges */
.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: #34D399; }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: #FBBF24; }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: #F87171; }
.badge-info { background: rgba(59, 130, 246, 0.15); color: #60A5FA; }

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-overlay.active {
    display: flex;
}

.modal-card {
    background: var(--admin-card-bg);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 540px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    animation: modalSlide 0.25s ease-out;
}

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

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

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

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    background: rgba(15, 23, 42, 0.5);
    border-top: 1px solid var(--admin-border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--admin-text-muted);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--admin-dark-bg);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius-sm);
    color: var(--admin-text-main);
    font-size: 0.9rem;
    outline: none;
}

.form-control:focus {
    border-color: var(--admin-secondary);
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.2);
}

/* Auth Page */
.admin-auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top right, #1E293B, #0F172A);
    padding: 1rem;
}

.auth-card {
    background: var(--admin-card-bg);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.4);
    text-align: center;
}

.auth-card .logo {
    height: 48px;
    margin-bottom: 1.5rem;
}

.auth-card h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.auth-card p {
    color: var(--admin-text-muted);
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
}

/* ===========================
   ADMIN MOBILE HAMBURGER TOGGLE
   =========================== */
.admin-hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--admin-text-main);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 6px;
}

/* ===========================
   ADMIN RESPONSIVE BREAKPOINTS
   =========================== */

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

/* Mobile – sidebar collapses off-screen */
@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 300;
        box-shadow: none;
    }

    .admin-sidebar.mobile-open {
        transform: translateX(0);
        box-shadow: 4px 0 30px rgba(0,0,0,0.5);
    }

    /* Overlay when sidebar open */
    .admin-sidebar.mobile-open::after {
        content: '';
        position: fixed;
        inset: 0;
        left: 260px;
        background: rgba(0,0,0,0.5);
        z-index: -1;
    }

    .admin-main {
        margin-left: 0;
    }

    .admin-header {
        padding: 0 1rem;
    }

    .admin-hamburger {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .admin-content {
        padding: 1.25rem 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.85rem;
    }

    .panel-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .panel-header h2 {
        font-size: 1rem;
    }

    /* Stack table rows on mobile */
    .data-table thead {
        display: none;
    }

    .data-table tbody tr {
        display: block;
        border: 1px solid var(--admin-border);
        border-radius: var(--radius-md);
        margin-bottom: 1rem;
        padding: 0.85rem;
    }

    .data-table tbody td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.45rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.05);
        font-size: 0.85rem;
    }

    .data-table tbody td:last-child {
        border-bottom: none;
    }

    .data-table tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--admin-text-muted);
        font-size: 0.72rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-right: 0.75rem;
        flex-shrink: 0;
    }

    .modal-card {
        width: 95%;
        max-height: 90vh;
        overflow-y: auto;
    }

    .modal-footer {
        flex-direction: column;
    }

    .modal-footer .btn {
        width: 100%;
        justify-content: center;
    }

    .auth-card {
        padding: 1.75rem 1.25rem;
    }
}

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

    .stat-card {
        padding: 1rem;
    }

    .stat-info .stat-val {
        font-size: 1.3rem;
    }

    .admin-header-title h1 {
        font-size: 1.05rem;
    }

    .btn {
        padding: 0.5rem 0.85rem;
        font-size: 0.82rem;
    }
}