/* ============================================
   KasirKu POS — Global Stylesheet
   Modern dark theme with glassmorphism
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --bg-card-hover: #263548;
    --bg-input: #0f172a;
    --bg-glass: rgba(30, 41, 59, 0.8);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --border-light: #475569;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.3);
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --info: #06b6d4;
    --info-bg: rgba(6, 182, 212, 0.1);
    --gradient-1: linear-gradient(135deg, #3b82f6, #8b5cf6);
    --gradient-2: linear-gradient(135deg, #10b981, #06b6d4);
    --gradient-3: linear-gradient(135deg, #f59e0b, #ef4444);
    --gradient-4: linear-gradient(135deg, #8b5cf6, #ec4899);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -2px rgba(0,0,0,0.2);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.4);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --transition: all 0.2s ease;
}

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

html { font-size: 14px; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

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

/* ============================================
   Layout
   ============================================ */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-brand {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-brand .brand-icon {
    width: 40px; height: 40px;
    background: var(--gradient-1);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.25rem; font-weight: 800; color: #fff;
}

.sidebar-brand h1 { font-size: 1.15rem; font-weight: 700; color: var(--text-primary); }
.sidebar-brand small { display: block; font-size: 0.7rem; color: var(--text-muted); font-weight: 400; }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 0.75rem 0; }

.nav-section { padding: 0.5rem 1.5rem; font-size: 0.65rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); margin-top: 0.5rem; }

.nav-link {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.65rem 1.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem; font-weight: 500;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.nav-link:hover { color: var(--text-primary); background: rgba(59, 130, 246, 0.05); }
.nav-link.active { color: var(--accent); background: rgba(59, 130, 246, 0.1); border-left-color: var(--accent); }
.nav-link .icon { width: 20px; text-align: center; font-size: 1rem; }

.sidebar-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); }
.sidebar-footer .user-info { display: flex; align-items: center; gap: 0.75rem; }
.sidebar-footer .user-avatar {
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--gradient-4); display: flex; align-items: center; justify-content: center;
    font-weight: 700; color: #fff; font-size: 0.85rem;
}
.sidebar-footer .user-name { font-size: 0.85rem; font-weight: 600; }
.sidebar-footer .user-role { font-size: 0.7rem; color: var(--text-muted); }

.main-content { margin-left: 260px; flex: 1; min-height: 100vh; display: flex; flex-direction: column; }

.topbar {
    padding: 1rem 2rem;
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; z-index: 50;
}

.topbar h2 { font-size: 1.25rem; font-weight: 700; }
.topbar-actions { display: flex; gap: 0.75rem; align-items: center; }

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

/* ============================================
   Components
   ============================================ */
.btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-sm); border: 1px solid transparent;
    font-family: inherit; font-size: 0.85rem; font-weight: 600;
    cursor: pointer; transition: var(--transition);
    text-decoration: none; line-height: 1.4;
}

.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 0 20px var(--accent-glow); transform: translateY(-1px); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.1); }
.btn-warning { background: var(--warning); color: #000; }
.btn-outline { background: transparent; color: var(--text-secondary); border-color: var(--border); }
.btn-outline:hover { color: var(--text-primary); border-color: var(--text-secondary); background: var(--bg-card); }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.75rem; }
.btn-lg { padding: 0.85rem 2rem; font-size: 1rem; }
.btn-ghost { background: transparent; color: var(--text-secondary); border: none; }
.btn-ghost:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.btn-block { display: flex; width: 100%; justify-content: center; }

.card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.5rem;
    transition: var(--transition);
}
.card:hover { border-color: var(--border-light); }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
.card-header h3 { font-size: 1rem; font-weight: 700; }

.stat-card {
    border-radius: var(--radius); padding: 1.5rem;
    position: relative; overflow: hidden;
    border: none;
}
.stat-card::before {
    content: ''; position: absolute; top: 0; right: 0;
    width: 100px; height: 100px; border-radius: 50%;
    opacity: 0.1; transform: translate(20px, -20px);
}
.stat-card .stat-value { font-size: 1.75rem; font-weight: 800; margin: 0.5rem 0; }
.stat-card .stat-label { font-size: 0.8rem; opacity: 0.8; font-weight: 500; }
.stat-card .stat-icon { font-size: 2rem; position: absolute; right: 1.5rem; top: 1.5rem; opacity: 0.3; }
.stat-card.gradient-1 { background: var(--gradient-1); color: #fff; }
.stat-card.gradient-2 { background: var(--gradient-2); color: #fff; }
.stat-card.gradient-3 { background: var(--gradient-3); color: #fff; }
.stat-card.gradient-4 { background: var(--gradient-4); color: #fff; }

.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 0.4rem; }

.form-control {
    width: 100%; padding: 0.65rem 1rem;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-family: inherit; font-size: 0.875rem;
    transition: var(--transition);
}
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.form-control::placeholder { color: var(--text-muted); }

select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem; }

textarea.form-control { resize: vertical; min-height: 80px; }

.form-error { color: var(--danger); font-size: 0.75rem; margin-top: 0.25rem; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }

.table-wrapper { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }

table { width: 100%; border-collapse: collapse; }
th { padding: 0.75rem 1rem; text-align: left; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); background: rgba(0,0,0,0.2); border-bottom: 1px solid var(--border); }
td { padding: 0.75rem 1rem; font-size: 0.85rem; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
tbody tr { transition: var(--transition); }
tbody tr:hover { background: rgba(59, 130, 246, 0.03); }
tbody tr:last-child td { border-bottom: none; }

.badge {
    display: inline-block; padding: 0.2rem 0.65rem;
    border-radius: 20px; font-size: 0.7rem; font-weight: 600;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-info { background: var(--info-bg); color: var(--info); }

.alert {
    padding: 0.85rem 1.25rem; border-radius: var(--radius-sm);
    font-size: 0.85rem; font-weight: 500; margin-bottom: 1rem;
    display: flex; align-items: center; gap: 0.75rem;
    animation: slideDown 0.3s ease;
}
.alert-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(16,185,129,0.2); }
.alert-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(239,68,68,0.2); }
.alert-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid rgba(245,158,11,0.2); }
.alert-info { background: var(--info-bg); color: var(--info); border: 1px solid rgba(6,182,212,0.2); }

.pagination { display: flex; gap: 0.35rem; align-items: center; margin-top: 1.5rem; justify-content: center; }
.pagination a, .pagination span { padding: 0.4rem 0.85rem; border-radius: var(--radius-sm); font-size: 0.8rem; font-weight: 600; border: 1px solid var(--border); color: var(--text-secondary); transition: var(--transition); }
.pagination a:hover { border-color: var(--accent); color: var(--accent); }
.pagination .active { background: var(--accent); color: #fff; border-color: var(--accent); }

.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
    display: none; align-items: center; justify-content: center; z-index: 1000;
}
.modal-overlay.show { display: flex; }
.modal {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 2rem; width: 90%; max-width: 500px;
    max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-lg);
    animation: scaleIn 0.2s ease;
}
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.modal-header h3 { font-size: 1.15rem; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 1.5rem; padding: 0.25rem; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }

.empty-state { text-align: center; padding: 3rem 1rem; color: var(--text-muted); }
.empty-state .icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.3; }
.empty-state h3 { color: var(--text-secondary); margin-bottom: 0.5rem; }

.text-right { text-align: right; }
.text-center { text-align: center; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

@keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .content { padding: 1rem; }
    .topbar { padding: 0.75rem 1rem; }
    .form-row { grid-template-columns: 1fr; }
}

/* ============================================
   Auth pages
   ============================================ */
.auth-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: var(--bg-primary);
    background-image: radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%), radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
}

.auth-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 2.5rem; width: 420px;
    box-shadow: var(--shadow-lg);
}

.auth-card .brand { text-align: center; margin-bottom: 2rem; }
.auth-card .brand .logo { width: 60px; height: 60px; background: var(--gradient-1); border-radius: var(--radius); display: inline-flex; align-items: center; justify-content: center; font-size: 1.5rem; font-weight: 800; color: #fff; margin-bottom: 0.75rem; }
.auth-card .brand h1 { font-size: 1.5rem; font-weight: 800; }
.auth-card .brand p { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.25rem; }

/* ============================================
   POS Kasir
   ============================================ */
.pos-layout { display: grid; grid-template-columns: 1fr 380px; height: calc(100vh - 60px); gap: 0; }

.pos-products { padding: 1rem; overflow-y: auto; background: var(--bg-primary); }
.pos-cart { background: var(--bg-secondary); border-left: 1px solid var(--border); display: flex; flex-direction: column; }

.pos-search {
    display: flex; gap: 0.5rem; margin-bottom: 1rem;
}

.pos-search input {
    flex: 1; padding: 0.85rem 1.25rem;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-size: 1rem; font-family: inherit;
}

.pos-search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

.pos-product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 0.75rem; }

.pos-product-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 1rem;
    cursor: pointer; transition: var(--transition);
    text-align: center;
}
.pos-product-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(59,130,246,0.15); }
.pos-product-card .product-name { font-size: 0.8rem; font-weight: 600; margin-bottom: 0.35rem; line-height: 1.3; }
.pos-product-card .product-price { font-size: 1rem; font-weight: 700; color: var(--accent); }
.pos-product-card .product-stock { font-size: 0.7rem; color: var(--text-muted); }

.cart-header { padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); font-weight: 700; font-size: 1rem; }
.cart-items { flex: 1; overflow-y: auto; padding: 0.5rem; }

.cart-item {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.75rem; border-radius: var(--radius-sm);
    border-bottom: 1px solid var(--border);
}
.cart-item-info { flex: 1; }
.cart-item-name { font-size: 0.8rem; font-weight: 600; }
.cart-item-price { font-size: 0.75rem; color: var(--text-muted); }
.cart-item-qty { display: flex; align-items: center; gap: 0.35rem; }
.cart-item-qty button { width: 28px; height: 28px; border: 1px solid var(--border); background: var(--bg-input); color: var(--text-primary); border-radius: 6px; cursor: pointer; font-weight: 700; transition: var(--transition); }
.cart-item-qty button:hover { border-color: var(--accent); }
.cart-item-qty input { width: 45px; text-align: center; padding: 0.25rem; background: var(--bg-input); border: 1px solid var(--border); border-radius: 6px; color: var(--text-primary); font-weight: 600; }
.cart-item-subtotal { font-weight: 700; font-size: 0.85rem; min-width: 80px; text-align: right; }
.cart-item-remove { color: var(--danger); cursor: pointer; opacity: 0.6; transition: var(--transition); font-size: 1.1rem; }
.cart-item-remove:hover { opacity: 1; }

.cart-summary { padding: 1rem 1.25rem; border-top: 1px solid var(--border); background: rgba(0,0,0,0.15); }
.cart-summary-row { display: flex; justify-content: space-between; margin-bottom: 0.5rem; font-size: 0.85rem; }
.cart-summary-row.total { font-size: 1.1rem; font-weight: 800; color: var(--accent); border-top: 1px solid var(--border); padding-top: 0.5rem; margin-top: 0.5rem; }

.cart-actions { padding: 1rem 1.25rem; border-top: 1px solid var(--border); }
.cart-actions .btn { width: 100%; justify-content: center; padding: 0.85rem; font-size: 1rem; }

@media (max-width: 768px) {
    .pos-layout { grid-template-columns: 1fr; height: auto; }
    .pos-products { min-height: 50vh; }
    .pos-product-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
}