@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --white: #ffffff;
    --bg: #f5f6fa;
    --surface: #ffffff;
    --border: #e2e5eb;
    --text: #1a1d23;
    --muted: #6b7280;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #16a34a;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 1px 4px rgba(0, 0, 0, .08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, .10);
    --sidebar-w: 240px;
    --header-h: 56px;
    --transition: .18s ease;
}

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    color: var(--accent-hover);
}

img {
    max-width: 100%;
    display: block;
}

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

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-w);
    height: 100%;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 200;
    transition: transform var(--transition);
    box-shadow: var(--shadow-md);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    height: var(--header-h);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.sidebar-brand {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-brand svg {
    color: var(--accent);
}

.sidebar-close {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--muted);
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: background var(--transition), color var(--transition);
}

.sidebar-close:hover {
    background: var(--bg);
    color: var(--text);
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0;
}

.nav-label {
    font-size: .68rem;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--muted);
    padding: 8px 20px 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: var(--text);
    font-size: .9rem;
    font-weight: 500;
    border-radius: 0;
    transition: background var(--transition), color var(--transition);
    cursor: pointer;
}

.nav-item:hover,
.nav-item.active {
    background: var(--bg);
    color: var(--accent);
}

.nav-item svg {
    flex-shrink: 0;
    color: inherit;
}

.sidebar-footer {
    border-top: 1px solid var(--border);
    padding: 12px 20px;
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 0;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--danger);
    font-size: .9rem;
    font-weight: 500;
    font-family: 'Inter', sans-serif;
    transition: color var(--transition);
}

.logout-btn:hover {
    color: var(--danger-hover);
}

.main-wrap {
    flex: 1;
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    height: var(--header-h);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 12px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}

.topbar-menu-btn:hover {
    background: var(--bg);
}

.topbar-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
}

.page-content {
    flex: 1;
    padding: 20px 16px;
    width: 100%;
    margin: 0 auto;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-title svg {
    color: var(--accent);
}

.form-group {
    margin-bottom: 14px;
}

.form-label {
    display: block;
    font-size: .83rem;
    font-weight: 500;
    color: var(--muted);
    margin-bottom: 5px;
}

.form-control {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: .9rem;
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background: var(--white);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}

select.form-control {
    cursor: pointer;
}

textarea.form-control {
    resize: vertical;
    min-height: 90px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    font-size: .88rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    border: none;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn:active {
    transform: scale(.98);
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-danger:hover {
    background: var(--danger-hover);
}

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

.btn-outline:hover {
    background: var(--accent);
    color: #fff;
}

.btn-ghost {
    background: transparent;
    color: var(--muted);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    background: var(--bg);
    color: var(--text);
}

.btn-sm {
    padding: 6px 12px;
    font-size: .8rem;
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 360px;
}

.search-box svg {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
    pointer-events: none;
}

.search-box input {
    padding-left: 36px;
}

.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: .85rem;
}

thead th {
    background: var(--bg);
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    color: var(--muted);
    font-size: .78rem;
    letter-spacing: .04em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

tbody td {
    padding: 11px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    vertical-align: middle;
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background var(--transition);
}

tbody tr:hover {
    background: var(--bg);
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: .72rem;
    font-weight: 600;
}

.badge-success {
    background: #dcfce7;
    color: var(--success);
}

.badge-warning {
    background: #fef9c3;
    color: #ca8a04;
}

.badge-info {
    background: #dbeafe;
    color: var(--accent);
}

.actions-group {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
    background: var(--bg);
    color: var(--muted);
}

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

.icon-btn.danger:hover {
    background: #fee2e2;
    color: var(--danger);
}

.links-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.links-group a {
    font-size: .8rem;
    color: var(--accent);
}

.links-group a:hover {
    text-decoration: underline;
}

.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--muted);
}

.empty-state svg {
    margin: 0 auto 12px;
    opacity: .4;
}

.empty-state p {
    font-size: .9rem;
}

.no-result {
    display: none;
    text-align: center;
    padding: 32px;
    color: var(--muted);
    font-size: .9rem;
}

.dynamic-row {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 8px;
    padding: 12px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.dynamic-row .form-group {
    flex: 1;
    min-width: 140px;
    margin-bottom: 0;
}

.dynamic-row .btn-remove {
    margin-top: 22px;
    flex-shrink: 0;
}

.add-row-btn {
    margin-top: 8px;
}

.section-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 20px 0;
}

.img-preview {
    width: 100px;
    height: 100px;
    object-fit: contain;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 4px;
    margin-bottom: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .9rem;
    font-weight: 500;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}

.overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .35);
    z-index: 190;
}

.overlay.active {
    display: block;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    padding: 20px;
}

.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 32px 28px;
    width: 100%;
    max-width: 380px;
}

.login-logo {
    text-align: center;
    margin-bottom: 24px;
}

.login-logo svg {
    margin: 0 auto 8px;
    color: var(--accent);
}

.login-logo h1 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
}

.login-logo p {
    font-size: .85rem;
    color: var(--muted);
}

.error-msg {
    background: #fee2e2;
    border: 1px solid #fca5a5;
    color: var(--danger);
    border-radius: var(--radius-sm);
    padding: 9px 12px;
    font-size: .85rem;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

@media(max-width:767px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-close {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .topbar-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

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

    .dynamic-row {
        flex-direction: column;
    }

    .dynamic-row .btn-remove {
        margin-top: 0;
        width: 100%;
    }

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

    .search-box {
        max-width: 100%;
        width: 100%;
    }

    thead th,
    tbody td {
        padding: 8px 10px;
    }

    .actions-group {
        flex-wrap: wrap;
    }

    .page-content {
        padding: 16px 12px;
    }
}