/* ============================================
   FFINVT — Firecracker Inventory System
   Design: Bold industrial with warm accents
   ============================================ */

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

:root {
    --bg-primary: #0F1117;
    --bg-secondary: #1A1D27;
    --bg-card: #21242F;
    --bg-card-hover: #282C3A;
    --bg-input: #161922;
    --border-color: #2D3140;
    --border-light: #383D50;

    --text-primary: #F0F0F4;
    --text-secondary: #9DA3B4;
    --text-muted: #6B7185;

    --accent: #F7552E;
    --accent-hover: #FF6B45;
    --accent-glow: rgba(247, 85, 46, 0.15);
    --accent-subtle: rgba(247, 85, 46, 0.08);

    --success: #22C55E;
    --success-bg: rgba(34, 197, 94, 0.1);
    --warning: #F59E0B;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --danger: #EF4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --info: #3B82F6;
    --info-bg: rgba(59, 130, 246, 0.1);

    --sidebar-width: 260px;
    --header-height: 64px;
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 14px;
    --shadow: 0 2px 12px rgba(0,0,0,0.2);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.3);
    --transition: 0.2s ease;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: 'DM Sans', 'Noto Sans SC', 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: color var(--transition); }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; height: auto; }

/* ============ LOGIN PAGE ============ */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.login-wrapper::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.login-box .logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-box .logo h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--accent);
}

.login-box .logo p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 6px;
    letter-spacing: 0.5px;
}

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

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

.sidebar-brand {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 24px;
    border-bottom: 1px solid var(--border-color);
    gap: 10px;
}

.sidebar-brand h2 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
}

.sidebar-brand .role-badge {
    font-size: 10px;
    background: var(--accent-subtle);
    color: var(--accent);
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.sidebar-nav .nav-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    padding: 12px 12px 6px;
    font-weight: 600;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition);
    margin-bottom: 2px;
}

.sidebar-nav a:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.sidebar-nav a.active {
    background: var(--accent-subtle);
    color: var(--accent);
}

.sidebar-nav a .icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.sidebar-nav a .badge-count {
    margin-left: auto;
    background: var(--accent);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 1px 7px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.sidebar-footer .user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    margin-bottom: 8px;
}

.sidebar-footer .user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-subtle);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

.sidebar-footer .user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-footer .user-role {
    font-size: 11px;
    color: var(--text-muted);
}

/* Main content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

/* Header */
.top-header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.top-header .page-title {
    font-size: 18px;
    font-weight: 600;
}

.top-header .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-switch {
    display: flex;
    background: var(--bg-input);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.lang-switch a {
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    transition: all var(--transition);
}

.lang-switch a.active {
    background: var(--accent);
    color: #fff;
}

.lang-switch a:hover:not(.active) {
    color: var(--text-primary);
}

/* Page body */
.page-body {
    padding: 28px;
}

/* ============ CARDS / STATS ============ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 22px;
    transition: all var(--transition);
}

.stat-card:hover {
    border-color: var(--border-light);
    transform: translateY(-1px);
}

.stat-card .stat-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 14px;
}

.stat-card .stat-icon.orange { background: var(--accent-subtle); color: var(--accent); }
.stat-card .stat-icon.green { background: var(--success-bg); color: var(--success); }
.stat-card .stat-icon.blue { background: var(--info-bg); color: var(--info); }
.stat-card .stat-icon.yellow { background: var(--warning-bg); color: var(--warning); }
.stat-card .stat-icon.red { background: var(--danger-bg); color: var(--danger); }

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ============ PANEL / CARD ============ */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 24px;
    overflow: hidden;
}

.panel-header {
    padding: 18px 22px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.panel-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.panel-body {
    padding: 22px;
}

.panel-body.no-pad {
    padding: 0;
}

/* ============ TABLE ============ */
.table-wrapper {
    overflow-x: auto;
}

table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

table.data-table thead th {
    background: var(--bg-input);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    white-space: nowrap;
    border-bottom: 1px solid var(--border-color);
}

table.data-table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

table.data-table tbody tr:hover {
    background: var(--bg-card-hover);
}

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

.product-thumb {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
}

.product-thumb-placeholder {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 20px;
}

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

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

.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    transition: border-color var(--transition);
    outline: none;
}

.form-control:focus {
    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' viewBox='0 0 24 24' fill='none' stroke='%236B7185' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* File upload */
.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
}

.file-upload-area:hover {
    border-color: var(--accent);
    background: var(--accent-subtle);
}

.file-upload-area input[type="file"] {
    display: none;
}

.file-upload-area .upload-icon {
    font-size: 28px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.file-upload-area .upload-text {
    font-size: 13px;
    color: var(--text-secondary);
}

.file-upload-area .upload-hint {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

.photo-preview {
    width: 120px;
    height: 120px;
    border-radius: var(--radius);
    object-fit: cover;
    border: 2px solid var(--border-color);
    margin-top: 10px;
}

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-primary:hover {
    background: var(--accent-hover);
    color: #fff;
    box-shadow: 0 4px 14px rgba(247, 85, 46, 0.3);
}

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-secondary);
    border-color: var(--border-color);
}
.btn-secondary:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

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

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

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

.btn-icon {
    padding: 7px;
    width: 34px;
    height: 34px;
    justify-content: center;
}

/* ============ BADGES ============ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.badge-pending { background: var(--warning-bg); color: var(--warning); }
.badge-approved { background: var(--success-bg); color: var(--success); }
.badge-rejected { background: var(--danger-bg); color: var(--danger); }
.badge-active { background: var(--success-bg); color: var(--success); }
.badge-inactive { background: var(--danger-bg); color: var(--danger); }

/* ============ ALERTS / FLASH ============ */
.alert {
    padding: 12px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 18px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success);
    border-color: rgba(34, 197, 94, 0.2);
}

.alert-error {
    background: var(--danger-bg);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.2);
}

.alert-warning {
    background: var(--warning-bg);
    color: var(--warning);
    border-color: rgba(245, 158, 11, 0.2);
}

/* ============ MODAL ============ */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 200;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

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

.modal-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 18px 22px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 20px;
    padding: 4px;
    transition: color var(--transition);
}
.modal-close:hover { color: var(--text-primary); }

.modal-body {
    padding: 22px;
}

.modal-footer {
    padding: 14px 22px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* ============ PRODUCT GRID (Staff browse) ============ */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 18px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
}

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

.product-card .card-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background: var(--bg-input);
}

.product-card .card-img-placeholder {
    width: 100%;
    height: 180px;
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 40px;
}

.product-card .card-body {
    padding: 16px;
}

.product-card .card-body h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 6px;
}

.product-card .card-body .price {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
}

.product-card .card-body .stock-info {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.product-card .card-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
}

/* ============ UTILITIES ============ */
.text-muted { color: var(--text-secondary); }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.w-full { width: 100%; }

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

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.4;
}

.empty-state p {
    font-size: 14px;
}

/* ============ MOBILE MENU TOGGLE ============ */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 22px;
    cursor: pointer;
    padding: 4px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

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

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

    .menu-toggle {
        display: block;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .page-body {
        padding: 16px;
    }

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

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