/* ============================================
   uSocial - Professional UI Stylesheet
   ============================================ */

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #6366f1;
    --primary-bg: #eef2ff;
    --success: #10b981;
    --success-bg: #d1fae5;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --info: #3b82f6;
    --info-bg: #dbeafe;
    --dark: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --shadow-xs: 0 1px 2px rgba(0,0,0,.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
    --shadow: 0 4px 6px -1px rgba(0,0,0,.06), 0 2px 4px -2px rgba(0,0,0,.04);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0,.07), 0 4px 6px -4px rgba(0,0,0,.04);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,.08), 0 8px 10px -6px rgba(0,0,0,.04);
    --transition: all .2s ease;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--gray-50);
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

.container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }

/* ==================== NAVBAR ==================== */
.navbar {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-xs);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.nav-brand {
    font-size: 22px;
    font-weight: 800;
    color: var(--dark) !important;
    letter-spacing: -.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-brand::before {
    content: '';
    display: inline-block;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-sm);
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 4px;
    align-items: center;
}

.nav-menu li a {
    display: block;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    color: var(--gray-600);
    font-size: 13.5px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu li a:hover {
    background: var(--gray-100);
    color: var(--dark);
    text-decoration: none;
}

.btn-logout {
    color: var(--danger) !important;
    font-weight: 600 !important;
}

/* Mobile hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray-700);
    padding: 4px 8px;
}

/* ==================== MAIN ==================== */
main.container {
    padding-top: 28px;
    padding-bottom: 40px;
    min-height: 65vh;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    text-align: center;
    padding: 20px 0;
    font-size: 13px;
    color: var(--gray-500);
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: var(--white);
    color: var(--gray-700);
    padding: 9px 18px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13.5px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
    user-select: none;
}

.btn:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
    text-decoration: none;
    color: var(--dark);
}

.btn:active { transform: scale(.97); }

.btn.btn-sm {
    padding: 5px 12px;
    font-size: 12px;
    border-radius: var(--radius-sm);
}

.btn.btn-lg {
    padding: 12px 28px;
    font-size: 15px;
    border-radius: var(--radius);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    font-weight: 600;
}

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

.btn-success {
    background: var(--success);
    color: #fff;
    border-color: var(--success);
    font-weight: 600;
}

.btn-success:hover {
    background: #059669;
    border-color: #059669;
    color: #fff;
}

.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
    font-weight: 600;
}

.btn-danger:hover {
    background: #dc2626;
    border-color: #dc2626;
    color: #fff;
}

.btn-warning {
    background: var(--warning);
    color: #fff;
    border-color: var(--warning);
    font-weight: 600;
}

.btn-warning:hover {
    background: #d97706;
    border-color: #d97706;
    color: #fff;
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary-bg);
    color: var(--primary-dark);
}

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

/* ==================== FORMS ==================== */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 13px;
    color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--dark);
    background: var(--white);
    transition: var(--transition);
    outline: none;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79,70,229,.1);
}

.form-group input::placeholder { color: var(--gray-400); }
.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--gray-500);
    font-size: 12px;
}

/* ==================== ALERTS ==================== */
.alert {
    padding: 13px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 18px;
    font-size: 13.5px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: slideDown .25s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.alert-error {
    background: var(--danger-bg);
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: var(--success-bg);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert ul { margin: 0; padding-left: 18px; }
.alert ul li { margin-bottom: 3px; }

/* ==================== CARDS ==================== */
.card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-xs);
    transition: var(--transition);
}

.card:hover { box-shadow: var(--shadow); }

/* ==================== TABLES ==================== */
.table-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    gap: 8px;
}
.table-search {
    padding: 6px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 12.5px;
    width: 200px;
    outline: none;
}
.table-search:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(79,70,229,.1);
}
.page-size {
    padding: 6px 8px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 12.5px;
    background: var(--white);
    outline: none;
}

.table-wrapper {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12.5px;
}

.table thead { background: var(--gray-50); }

.table th {
    padding: 8px 10px;
    text-align: left;
    font-weight: 600;
    font-size: 10.5px;
    text-transform: uppercase;
    letter-spacing: .4px;
    color: var(--gray-500);
    border-bottom: 2px solid var(--gray-200);
    white-space: nowrap;
}

.table td {
    padding: 7px 10px;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
}

.table tbody tr { transition: var(--transition); }
.table tbody tr:hover { background: var(--gray-50); }
.table tbody tr:last-child td { border-bottom: none; }

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

.table-detail th,
.table-detail td {
    padding: 11px 16px;
    border-bottom: 1px solid var(--gray-100);
    font-size: 13.5px;
}

.table-detail th {
    width: 170px;
    color: var(--gray-500);
    font-weight: 600;
    font-size: 12.5px;
    text-align: right;
    white-space: nowrap;
}

.table-detail td { color: var(--gray-800); }

/* ==================== BADGES ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11.5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .3px;
    white-space: nowrap;
}

.badge-pending           { background: var(--warning-bg); color: #92400e; }
.badge-paid              { background: var(--info-bg); color: #1e40af; }
.badge-waiting_balance   { background: #fef3c7; color: #92400e; }
.badge-processing        { background: #e0e7ff; color: #3730a3; }
.badge-success           { background: var(--success-bg); color: #065f46; }
.badge-failed            { background: var(--danger-bg); color: #991b1b; }
.badge-expired           { background: var(--gray-200); color: var(--gray-600); }
.badge-refunded          { background: #e0e7ff; color: #3730a3; }

/* ==================== AUTH PAGES ==================== */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 75vh;
    padding: 20px;
}

.auth-card {
    background: var(--white);
    padding: 36px 32px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 430px;
}

.auth-card h1 {
    font-size: 26px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 6px;
    color: var(--dark);
}

.auth-card .auth-subtitle {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 24px;
    font-size: 13.5px;
}

.auth-card .form-group input {
    padding: 12px 14px;
    font-size: 14px;
}

.auth-card button[type="submit"] {
    margin-top: 6px;
    padding: 13px;
    font-size: 15px;
}

.auth-links {
    text-align: center;
    margin-top: 18px;
    font-size: 13.5px;
    color: var(--gray-500);
}

.auth-links a { font-weight: 600; }

/* ==================== HERO / WELCOME ==================== */
.welcome-banner {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-radius: var(--radius-lg);
    padding: 32px 36px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-md);
}

.welcome-banner h1 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 4px;
}

.welcome-banner p {
    opacity: .85;
    font-size: 14px;
}

/* ==================== DASHBOARD GRID ==================== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.dashboard-grid .card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    text-align: center;
    padding: 28px 20px;
}

.dashboard-grid .card h3 {
    font-size: 17px;
    color: var(--dark);
}

.dashboard-grid .card p {
    color: var(--gray-500);
    font-size: 13.5px;
    flex: 1;
}

.dashboard-grid .card .icon-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin: 0 auto 6px;
}

.icon-ppob  { background: var(--primary-bg); color: var(--primary); }
.icon-smm   { background: #fce7f3; color: #db2777; }
.icon-history { background: var(--success-bg); color: var(--success); }

/* ==================== PRODUCT GRID ==================== */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--gray-200);
}

.filter-bar hr {
    width: 100%;
    border: none;
    margin: 4px 0;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 14px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.product-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.product-info h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 6px;
    line-height: 1.4;
}

.product-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 10px;
}

.product-category {
    display: inline-block;
    background: var(--primary-bg);
    color: var(--primary-dark);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.product-brand {
    display: inline-block;
    background: var(--gray-100);
    color: var(--gray-600);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
}

.product-price {
    font-size: 18px;
    font-weight: 800;
    color: var(--primary);
    margin: 8px 0 14px;
}

.product-price small {
    font-size: 11px;
    font-weight: 400;
    color: var(--gray-400);
}

.product-card .btn {
    margin-top: auto;
}

/* ==================== CHECKOUT ==================== */
.checkout-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: 28px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
    max-width: 600px;
}

.checkout-card h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--dark);
}

.checkout-card .price {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    margin: 10px 0 18px;
}

.checkout-summary {
    background: var(--primary-bg);
    padding: 16px;
    border-radius: var(--radius-sm);
    margin: 18px 0;
    text-align: center;
}

.checkout-summary p:first-child {
    font-size: 17px;
    font-weight: 700;
    color: var(--dark);
}

.checkout-summary small { color: var(--gray-500); }

/* ==================== ORDER DETAIL ==================== */
.order-detail {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: 24px;
    box-shadow: var(--shadow-xs);
    margin-bottom: 16px;
    max-width: 650px;
}

/* ==================== SECTION HEADER ==================== */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

.section-header h1,
.section-header h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
}

/* ==================== ADMIN LAYOUT ==================== */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    background: var(--dark);
    color: #fff;
    padding: 0;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-brand {
    padding: 22px 24px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.sidebar-brand h2 {
    font-size: 19px;
    font-weight: 800;
}

.sidebar-brand small {
    font-size: 11px;
    color: rgba(255,255,255,.45);
    letter-spacing: .5px;
    text-transform: uppercase;
}

.sidebar-menu {
    list-style: none;
    padding: 12px 0;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    color: rgba(255,255,255,.65);
    font-size: 13.5px;
    font-weight: 500;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.sidebar-menu li a:hover {
    background: rgba(255,255,255,.06);
    color: #fff;
    border-left-color: var(--primary-light);
    text-decoration: none;
}

.sidebar-menu li hr {
    margin: 8px 24px;
    border-color: rgba(255,255,255,.08);
}

.admin-main {
    flex: 1;
    padding: 30px;
    background: var(--gray-50);
    min-height: 100vh;
}

.admin-main h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--dark);
}

/* ==================== ADMIN STATS ==================== */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--white);
    padding: 20px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-xs);
    transition: var(--transition);
}

.stat-card:hover { box-shadow: var(--shadow); }

.stat-card h3 {
    font-size: 11.5px;
    color: var(--gray-500);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: .8px;
    font-weight: 700;
}

.stat-value {
    font-size: 26px;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -.5px;
}

.stat-value.warning { color: var(--warning); }
.stat-value.danger  { color: var(--danger); }
.stat-value.success { color: var(--success); }

.stat-card small {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: var(--gray-400);
}

/* ==================== ADMIN INFO PANEL ==================== */
.admin-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.admin-info .card h3 {
    font-size: 16px;
    margin-bottom: 14px;
    color: var(--dark);
}

/* ==================== PAGINATION ==================== */
.pagination {
    display: flex;
    gap: 4px;
    margin: 24px 0;
    justify-content: center;
    flex-wrap: wrap;
}

.pagination a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 8px;
    border-radius: var(--radius-sm);
    background: var(--white);
    border: 1px solid var(--gray-200);
    color: var(--gray-600);
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
}

.pagination a:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    text-decoration: none;
}

.pagination a.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    font-weight: 700;
}

/* ==================== UTILS ==================== */
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }
.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--gray-500); }
.text-small  { font-size: 12.5px; }

.link-truncate {
    max-width: 200px;
    display: inline-block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: middle;
}

.empty-state {
    text-align: center;
    padding: 48px 20px;
}

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    color: var(--gray-300);
}

.empty-state h3 {
    font-size: 17px;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.empty-state p { color: var(--gray-400); }

/* ==================== HEADINGS ==================== */
h1 { font-size: 24px; font-weight: 700; margin-bottom: 18px; color: var(--dark); }
h2 { font-size: 19px; font-weight: 700; margin-bottom: 12px; margin-top: 24px; color: var(--dark); }
h3 { font-size: 15px; font-weight: 600; }

hr {
    border: none;
    border-top: 1px solid var(--gray-200);
    margin: 20px 0;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 900px) {
    .admin-layout { flex-direction: column; }
    .admin-sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding-bottom: 4px;
    }
    .sidebar-menu { display: flex; flex-wrap: wrap; gap: 2px; padding: 8px 16px; }
    .sidebar-menu li a {
        padding: 6px 12px;
        font-size: 12px;
        border-left: none;
        border-radius: var(--radius-sm);
    }
    .sidebar-menu li hr { display: none; }
    .admin-main { padding: 20px; }
}

@media (max-width: 768px) {
    .nav-menu { display: none; }
    .nav-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--gray-200);
        padding: 8px 16px 16px;
        box-shadow: var(--shadow-md);
        z-index: 99;
    }
    .nav-toggle { display: block; }

    .navbar .container { flex-wrap: wrap; }
    .dashboard-grid { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
    .admin-stats { grid-template-columns: repeat(2, 1fr); }
    .stat-value { font-size: 22px; }
}

@media (max-width: 480px) {
    .auth-card { padding: 24px 20px; }
    .checkout-card { padding: 20px; }
    .admin-stats { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: 1fr; }
}