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

/* ─────────────────────────────────────────
   CSS Variables – Light Mode (default)
──────────────────────────────────────────*/
:root {
    --bg-body:          #f1f5f9;
    --bg-surface:       #ffffff;
    --bg-surface-hover: #f8fafc;
    --bg-card:          #ffffff;
    --border-color:     rgba(226, 232, 240, 0.9);
    --border-hover:     rgba(99, 102, 241, 0.35);
    --text-main:        #0f172a;
    --text-muted:       #64748b;
    --nav-bg:           #0f172a;
    --nav-text:         #94a3b8;
    --nav-text-hover:   #ffffff;

    --primary:          #4f46e5;
    --primary-hover:    #4338ca;
    --primary-light:    rgba(79, 70, 229, 0.1);

    --violet:  #8b5cf6;
    --emerald: #10b981;
    --sky:     #0ea5e9;
    --amber:   #f59e0b;
    --rose:    #f43f5e;
    --indigo:  #6366f1;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 20px -2px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 30px -4px rgba(0,0,0,0.1);

    --nav-height: 58px;
}

/* ─────────────────────────────────────────
   CSS Variables – Dark Mode
──────────────────────────────────────────*/
[data-theme="dark"] {
    --bg-body:          #0e1117;
    --bg-surface:       #161b22;
    --bg-surface-hover: #1c2128;
    --bg-card:          #161b22;
    --border-color:     rgba(255, 255, 255, 0.07);
    --border-hover:     rgba(139, 92, 246, 0.35);
    --text-main:        #f0f6fc;
    --text-muted:       #8b949e;
    --nav-bg:           #0d1117;
    --nav-text:         #8b949e;
    --nav-text-hover:   #f0f6fc;

    --primary:          #6366f1;
    --primary-hover:    #4f46e5;
    --primary-light:    rgba(99, 102, 241, 0.15);

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 20px -2px rgba(0,0,0,0.45);
    --shadow-lg: 0 10px 30px -4px rgba(0,0,0,0.55);
}

/* ─────────────────────────────────────────
   Base Reset & Global
──────────────────────────────────────────*/
*, *::before, *::after {
    box-sizing: border-box;
    transition: background-color 0.22s ease, border-color 0.22s ease, color 0.22s ease;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    font-size: 0.925rem;
}

/* ─────────────────────────────────────────
   Navigation Bar
──────────────────────────────────────────*/
.app-nav {
    background: var(--nav-bg) !important;
    border-bottom: 1px solid var(--border-color);
    padding: 0.65rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1030;
    height: var(--nav-height);
    flex-shrink: 0;
}

.navbar-brand {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff !important;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    text-decoration: none;
}

.brand-badge {
    background: linear-gradient(135deg, var(--indigo), var(--violet));
    color: #fff;
    padding: 0.2rem 0.55rem;
    border-radius: 7px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.4);
}

.nav-link {
    color: var(--nav-text) !important;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.45rem 0.8rem !important;
    border-radius: 8px;
    transition: all 0.18s ease;
}

.nav-link:hover {
    color: var(--nav-text-hover) !important;
    background: rgba(255, 255, 255, 0.07);
}

.nav-link.active {
    background: var(--primary-light) !important;
    color: var(--primary) !important;
    font-weight: 600;
}

/* ─────────────────────────────────────────
   Theme Toggle Button
──────────────────────────────────────────*/
.theme-btn {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.05);
    color: #94a3b8;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.theme-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-1px);
}

/* ─────────────────────────────────────────
   Main Content Area
──────────────────────────────────────────*/
.main-content {
    flex: 1;
    width: 100%;
    max-width: 100% !important;
    padding: 1.75rem 1.5rem;
}

/* Full-screen override for POS terminal */
.main-content.pos-fullscreen {
    padding: 0 !important;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    height: calc(100vh - var(--nav-height));
}

/* ─────────────────────────────────────────
   Cards & Containers
──────────────────────────────────────────*/
.dashboard-card, .card {
    background: var(--bg-card);
    border: 1px solid var(--border-color) !important;
    border-radius: 16px !important;
    box-shadow: var(--shadow-md);
}

.dashboard-card {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.dashboard-card:hover {
    border-color: var(--border-hover) !important;
    box-shadow: var(--shadow-lg);
}

/* ─────────────────────────────────────────
   Stat Cards
──────────────────────────────────────────*/
.stat-card {
    position: relative;
    overflow: hidden;
}

.stat-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.stat-icon.violet  { background: rgba(139, 92, 246, 0.15); color: var(--violet); }
.stat-icon.emerald { background: rgba(16, 185, 129, 0.15);  color: var(--emerald); }
.stat-icon.sky     { background: rgba(14, 165, 233, 0.15);  color: var(--sky); }
.stat-icon.amber   { background: rgba(245, 158, 11, 0.15);  color: var(--amber); }
.stat-icon.rose    { background: rgba(244, 63, 94, 0.15);   color: var(--rose); }

/* ─────────────────────────────────────────
   Tables
──────────────────────────────────────────*/
.table {
    color: var(--text-main) !important;
}

.table th {
    background: transparent !important;
    color: var(--text-muted);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color) !important;
    padding: 0.75rem 1rem;
}

.table td {
    background: transparent !important;
    color: var(--text-main) !important;
    border-bottom: 1px solid var(--border-color) !important;
    padding: 0.8rem 1rem;
    vertical-align: middle;
}

.table tbody tr:hover td {
    background: var(--bg-surface-hover) !important;
}

/* ─────────────────────────────────────────
   User Role Pill
──────────────────────────────────────────*/
.role-pill {
    background: rgba(99, 102, 241, 0.12);
    color: var(--primary);
    border-radius: 999px;
    padding: 0.2rem 0.6rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    border: 1px solid rgba(99, 102, 241, 0.25);
}

/* ─────────────────────────────────────────
   Form Controls
──────────────────────────────────────────*/
.form-control, .form-select {
    background-color: var(--bg-surface) !important;
    border-color: var(--border-color) !important;
    color: var(--text-main) !important;
    border-radius: 10px !important;
    padding: 0.58rem 0.9rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control::placeholder { color: var(--text-muted) !important; }

.form-control:focus, .form-select:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px var(--primary-light) !important;
    outline: none;
}

.input-group-text {
    background-color: var(--bg-surface) !important;
    border-color: var(--border-color) !important;
    color: var(--text-muted) !important;
}

/* ─────────────────────────────────────────
   Buttons
──────────────────────────────────────────*/
.btn-primary {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
}
.btn-primary:hover {
    background: var(--primary-hover) !important;
    border-color: var(--primary-hover) !important;
}

/* ─────────────────────────────────────────
   Custom Scrollbar
──────────────────────────────────────────*/
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─────────────────────────────────────────
   POS Terminal – Full Screen Layout
──────────────────────────────────────────*/

/* POS wrapper that stretches full height */
.pos-layout {
    display: flex;
    gap: 0;
    height: 100%;
    overflow: hidden;
}

/* Left panel: product browser */
.pos-left-panel {
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-right: 1px solid var(--border-color);
}

/* Search bar area */
.pos-search-area {
    padding: 1rem 1.25rem 0.75rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

/* Category filter pills bar */
.pos-filter-bar {
    padding: 0.65rem 1.25rem;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    flex-shrink: 0;
}

/* Scrollable products area */
.pos-products-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 1.25rem;
}

/* Product grid */
.pos-prod-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(185px, 1fr));
    gap: 0.85rem;
    align-content: start;
}

/* Individual product card */
.pos-prod-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 0.9rem;
    position: relative;
    cursor: pointer;
    transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    user-select: none;
}

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

.pos-prod-card:active {
    transform: scale(0.98);
}

.pos-prod-card .prod-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

/* Category pill buttons */
.cat-pill-btn {
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.18s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    white-space: nowrap;
}

.cat-pill-btn:hover, .cat-pill-btn.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 0 10px var(--primary-light);
}

.cat-pill-btn .pill-count {
    background: rgba(0, 0, 0, 0.15);
    color: inherit;
    padding: 0.1rem 0.42rem;
    border-radius: 999px;
    font-size: 0.7rem;
}

/* ─────────────────────────────────────────
   POS Checkout Sidebar
──────────────────────────────────────────*/
.pos-right-panel {
    width: 380px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-card);
}

@media (max-width: 1200px) {
    .pos-right-panel { width: 340px; }
}

@media (max-width: 991px) {
    .pos-layout { flex-direction: column; }
    .pos-left-panel { border-right: none; border-bottom: 1px solid var(--border-color); }
    .pos-right-panel { width: 100%; height: 420px; }
    .main-content.pos-fullscreen { height: auto; overflow: visible; }
}

/* Cart header */
.cart-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

/* Scrollable cart items */
.cart-items-scroll {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

/* Cart item row */
.cart-item-row {
    padding: 0.7rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cart-item-row:last-child {
    border-bottom: none;
}

/* Quantity button */
.qty-btn {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-weight: bold;
    font-size: 0.85rem;
    transition: all 0.15s ease;
    flex-shrink: 0;
}

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

/* Cart footer / checkout area */
.cart-checkout-area {
    border-top: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
    flex-shrink: 0;
    background: var(--bg-card);
}

/* Payment tab buttons */
.pay-tab-btn {
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.45rem 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    flex: 1;
    text-align: center;
    transition: all 0.18s ease;
}

.pay-tab-btn:hover, .pay-tab-btn.active {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

/* Search dropdown */
.search-results-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 1050;
    max-height: 260px;
    overflow-y: auto;
}

.search-result-item {
    padding: 0.7rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s ease;
}

.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover, .search-result-item.active {
    background: var(--bg-surface-hover);
}