/* ===================================
   POS APP - Premium Dark Theme
   =================================== */

:root {
    /* Colors */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1a1f35;
    --bg-card-hover: #232845;
    --bg-input: #151a2e;

    --border-color: rgba(236, 72, 153, 0.15);
    --border-hover: rgba(236, 72, 153, 0.35);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent-primary: #ec4899;
    --accent-secondary: #f43f5e;
    --accent-gradient: linear-gradient(135deg, #ec4899 0%, #f43f5e 50%, #d946ef 100%);

    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --danger: #f43f5e;
    --danger-bg: rgba(244, 63, 94, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.1);

    /* Sizing */
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
    --header-height: 64px;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(236, 72, 153, 0.15);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

a { text-decoration: none; color: inherit; }

/* ===== App Container ===== */
.app-container {
    display: flex;
    min-height: 100vh;
}

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

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-section-title,
.sidebar.collapsed .nav-link span,
.sidebar.collapsed .user-details,
.sidebar.collapsed .sidebar-footer form {
    opacity: 0;
    visibility: hidden;
    width: 0;
}

.sidebar.collapsed .sidebar-header {
    justify-content: center;
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding: 12px;
}

.sidebar.collapsed .nav-link i {
    margin-right: 0;
    font-size: 18px;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 16px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    flex-shrink: 0;
}

.logo-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-primary);
    white-space: nowrap;
    transition: var(--transition);
}

.logo-accent {
    color: var(--accent-primary);
}

.sidebar-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 28px;
    height: 28px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 11px;
    flex-shrink: 0;
}

.sidebar-toggle:hover {
    background: var(--accent-primary);
    color: white;
}

.sidebar.collapsed .sidebar-toggle i {
    transform: rotate(180deg);
}

/* Navigation */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 0;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.nav-section {
    margin-bottom: 8px;
}

.nav-section-title {
    display: block;
    padding: 8px 20px 4px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    text-transform: uppercase;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 10px 20px;
    margin: 2px 8px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
}

.nav-link i {
    width: 20px;
    font-size: 15px;
    margin-right: 12px;
    text-align: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.nav-link span {
    transition: var(--transition);
}

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

.nav-link.active {
    color: white;
    background: var(--accent-gradient);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.nav-link.active i {
    color: white;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    flex-shrink: 0;
}

.user-details {
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    white-space: nowrap;
}

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

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

.btn-logout {
    background: var(--danger-bg);
    border: 1px solid rgba(244, 63, 94, 0.2);
    color: var(--danger);
    width: 32px;
    height: 32px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: var(--transition);
    min-height: 100vh;
    min-width: 0;
    overflow: hidden;
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed);
}

.main-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.current-date {
    font-size: 13px;
    color: var(--text-secondary);
}

.current-date i {
    margin-right: 6px;
    color: var(--accent-primary);
}

.content-wrapper {
    padding: 28px;
}

/* ===== Page Header ===== */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.page-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ===== Cards ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    overflow: hidden;
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Stat Cards ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: var(--radius) var(--radius) 0 0;
}

.stat-card.revenue::before { background: var(--accent-gradient); }
.stat-card.transactions::before { background: linear-gradient(90deg, #3b82f6, #06b6d4); }
.stat-card.profit::before { background: linear-gradient(90deg, #10b981, #34d399); }
.stat-card.expenses::before { background: linear-gradient(90deg, #f43f5e, #fb923c); }
.stat-card.tempo::before { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.stat-card.paid::before { background: linear-gradient(90deg, #10b981, #059669); }

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

.stat-info h3 {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.stat-card.revenue .stat-icon { background: rgba(99, 102, 241, 0.15); color: var(--accent-primary); }
.stat-card.transactions .stat-icon { background: var(--info-bg); color: var(--info); }
.stat-card.profit .stat-icon { background: var(--success-bg); color: var(--success); }
.stat-card.expenses .stat-icon { background: var(--danger-bg); color: var(--danger); }
.stat-card.tempo .stat-icon { background: var(--warning-bg); color: var(--warning); }
.stat-card.paid .stat-icon { background: rgba(16, 185, 129, 0.15); color: var(--success); }

/* ===== Tables ===== */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius);
}

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

thead th {
    background: var(--bg-secondary);
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid rgba(99, 102, 241, 0.06);
    font-size: 13px;
    color: var(--text-secondary);
    vertical-align: middle;
}

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

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

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #34d399);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, #f43f5e, #fb7185);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(244, 63, 94, 0.3);
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: #1a1a1a;
}

.btn-ghost {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-ghost:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

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

.btn-lg {
    padding: 14px 28px;
    font-size: 15px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.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-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.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='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%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: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* ===== Alerts ===== */
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    margin: 0 28px 20px;
    font-size: 14px;
    animation: slideDown 0.3s ease;
    transition: var(--transition);
}

.alert-success {
    background: var(--success-bg);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.alert-danger {
    background: var(--danger-bg);
    border: 1px solid rgba(244, 63, 94, 0.2);
    color: var(--danger);
}

.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    color: inherit;
    font-size: 18px;
    cursor: pointer;
    opacity: 0.7;
}

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

/* ===== Modal ===== */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: scaleIn 0.3s ease;
}

.modal-lg {
    max-width: 700px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
}

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

.modal-close:hover {
    color: var(--danger);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

/* ===== Badges ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.badge-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.2); }
.badge-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(244, 63, 94, 0.2); }
.badge-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.2); }
.badge-info { background: var(--info-bg); color: var(--info); border: 1px solid rgba(59, 130, 246, 0.2); }

/* ===== Pagination ===== */
.pagination-wrapper {
    display: flex;
    justify-content: center;
    margin-top: 24px;
}

.pagination-wrapper nav > div:first-child {
    display: none;
}

.pagination-wrapper .flex.justify-between {
    display: none;
}

.pagination-wrapper nav span,
.pagination-wrapper nav a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    margin: 0 2px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.pagination-wrapper nav span[aria-current="page"] span {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
}

.pagination-wrapper nav a:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* ===== POS Terminal ===== */
.pos-body {
    overflow: hidden;
    height: 100vh;
}

.pos-container {
    display: grid;
    grid-template-columns: 1fr 400px;
    height: 100vh;
    gap: 0;
}

.pos-products {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    overflow: hidden;
}

.pos-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.pos-header .logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.pos-search {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.pos-search-input {
    flex: 1;
    position: relative;
}

.pos-search-input i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.pos-search-input input {
    width: 100%;
    padding: 10px 14px 10px 40px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.pos-search-input input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.pos-categories {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.pos-categories::-webkit-scrollbar { height: 0; }

.category-pill {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.category-pill:hover,
.category-pill.active {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.pos-product-grid {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 14px;
    align-content: start;
}

.pos-product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.pos-product-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.pos-product-card:active {
    transform: translateY(-1px);
}

.pos-product-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 12px;
    background: var(--accent-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
    opacity: 0.9;
}

.pos-product-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.pos-product-price {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent-secondary);
}

.pos-product-stock {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Cart Panel */
.pos-cart {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
}

.pos-cart-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pos-cart-header h3 {
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.cart-count {
    background: var(--accent-gradient);
    color: white;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 700;
}

.pos-cart-items {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0;
}

.pos-cart-items::-webkit-scrollbar {
    width: 4px;
}

.pos-cart-items::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.cart-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    font-size: 14px;
}

.cart-empty i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.cart-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    transition: var(--transition);
    border-bottom: 1px solid rgba(99, 102, 241, 0.05);
}

.cart-item:hover {
    background: var(--bg-card);
}

.cart-item-info {
    flex: 1;
    min-width: 0;
}

.cart-item-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cart-item-price {
    font-size: 12px;
    color: var(--text-muted);
}

.cart-item-qty {
    display: flex;
    align-items: center;
    gap: 6px;
}

.cart-item-qty button {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-input);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: var(--transition);
}

.cart-item-qty button:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.cart-item-qty span {
    font-size: 14px;
    font-weight: 700;
    min-width: 28px;
    text-align: center;
    color: var(--text-primary);
}

.cart-item-subtotal {
    font-size: 13px;
    font-weight: 700;
    color: var(--accent-secondary);
    white-space: nowrap;
}

.cart-item-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
    padding: 4px;
}

.cart-item-remove:hover {
    color: var(--danger);
}

/* Cart Summary */
.pos-cart-summary {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-card);
}

.cart-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 13px;
}

.cart-summary-row.total {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary);
    margin-top: 12px;
    padding-top: 12px;
    border-top: 2px solid var(--border-color);
}

.cart-summary-row.total .amount {
    color: var(--accent-secondary);
}

.cart-summary-row .label {
    color: var(--text-secondary);
}

.cart-summary-row .amount {
    font-weight: 600;
    color: var(--text-primary);
}

.pos-cart-actions {
    padding: 16px 20px;
    display: flex;
    gap: 10px;
}

.pos-cart-actions .btn {
    flex: 1;
    justify-content: center;
    padding: 14px;
    font-size: 14px;
}

/* Payment Modal styles */
.payment-info {
    margin-bottom: 20px;
}

.payment-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
}

.payment-row .label { color: var(--text-secondary); }
.payment-row .value { font-weight: 600; color: var(--text-primary); }

.payment-total {
    font-size: 20px;
    font-weight: 800;
    padding: 12px 0;
    border-top: 2px solid var(--border-color);
    margin-top: 8px;
}

.payment-total .value {
    color: var(--accent-secondary);
}

.change-display {
    background: var(--success-bg);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
    margin-top: 16px;
}

.change-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.change-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--success);
}

/* Receipt Modal */
.receipt {
    background: white;
    color: #333;
    padding: 24px;
    border-radius: var(--radius);
    font-size: 13px;
    max-height: 60vh;
    overflow-y: auto;
}

.receipt-header {
    text-align: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px dashed #ddd;
}

.receipt-header h3 {
    font-size: 18px;
    font-weight: 800;
    color: #1a1a1a;
}

.receipt-header p {
    font-size: 12px;
    color: #666;
}

.receipt-items {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px dashed #ddd;
}

.receipt-item {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
}

.receipt-summary {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 2px dashed #ddd;
}

.receipt-row {
    display: flex;
    justify-content: space-between;
    padding: 3px 0;
}

.receipt-total {
    font-size: 16px;
    font-weight: 800;
}

.receipt-footer {
    text-align: center;
    font-size: 12px;
    color: #888;
}

/* ===== Report Styles ===== */
.report-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.report-header {
    padding: 24px;
    text-align: center;
    background: var(--accent-gradient);
    color: white;
}

.report-header h2 {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 4px;
}

.report-header p {
    font-size: 13px;
    opacity: 0.8;
}

.report-section {
    padding: 0 24px;
}

.report-section-title {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    padding: 16px 0 8px;
    border-bottom: 1px solid var(--border-color);
}

.report-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    font-size: 14px;
    border-bottom: 1px solid rgba(99, 102, 241, 0.05);
}

.report-row .label {
    color: var(--text-secondary);
    padding-left: 16px;
}

.report-row .amount {
    font-weight: 600;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.report-total-row {
    display: flex;
    justify-content: space-between;
    padding: 14px 0;
    font-size: 15px;
    font-weight: 700;
    border-top: 2px solid var(--border-color);
    margin-top: 8px;
}

.report-total-row .amount { color: var(--accent-secondary); }
.report-total-row.profit .amount { color: var(--success); }
.report-total-row.loss .amount { color: var(--danger); }

.report-grand-total {
    display: flex;
    justify-content: space-between;
    padding: 20px 24px;
    background: var(--bg-secondary);
    font-size: 18px;
    font-weight: 800;
    border-top: 2px solid var(--accent-primary);
}

.report-grand-total .amount { color: var(--accent-secondary); }
.report-grand-total.profit .amount { color: var(--success); }
.report-grand-total.loss .amount { color: var(--danger); }

.report-balance-check {
    padding: 16px 24px;
    text-align: center;
    font-size: 13px;
}

.report-balance-check.balanced {
    background: var(--success-bg);
    color: var(--success);
    border-top: 1px solid rgba(16, 185, 129, 0.2);
}

.report-balance-check.unbalanced {
    background: var(--danger-bg);
    color: var(--danger);
    border-top: 1px solid rgba(244, 63, 94, 0.2);
}

/* ===== Filter Bar ===== */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.filter-bar .form-control {
    width: auto;
    min-width: 180px;
}

/* ===== Grid layouts ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ===== Chart Container ===== */
.chart-container {
    position: relative;
    height: 300px;
    padding: 16px 0;
}

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

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.3;
}

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

/* ===== Login Page ===== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    padding: 20px;
}

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

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

.login-header .logo-icon {
    width: 56px;
    height: 56px;
    font-size: 24px;
    margin: 0 auto 16px;
}

.login-header h1 {
    font-size: 24px;
    font-weight: 800;
}

.login-header p {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

.login-error {
    background: var(--danger-bg);
    border: 1px solid rgba(244, 63, 94, 0.2);
    color: var(--danger);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 20px;
}

.login-form .btn {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: 15px;
    margin-top: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .pos-container {
        grid-template-columns: 1fr 340px;
    }

    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
}

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

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

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

    .mobile-toggle {
        display: block;
    }

    .content-wrapper {
        padding: 16px;
    }

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

    .pos-container {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
    }

    .pos-cart {
        border-left: none;
        border-top: 1px solid var(--border-color);
        max-height: 50vh;
    }

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

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

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

/* ===== Utilities ===== */
.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); }
.text-accent { color: var(--accent-secondary); }
.font-bold { font-weight: 700; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mt-4 { margin-top: 16px; }
.gap-2 { gap: 8px; }
.d-flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }