/* ── Variables ── */
:root {
    --sidebar-w: 240px;
    --topbar-h: 60px;

    --primary:   #1a3a8f;
    --primary-d: #0d1f5c;
    --accent:    #2563eb;
    --accent-l:  #60a5fa;

    --bg:        #f0f4fa;
    --card-bg:   #ffffff;
    --text:      #1e293b;
    --text-muted:#64748b;
    --border:    #e2e8f0;
    --input-bg:  #ffffff;
    --sidebar-bg:#1a3a8f;
    --sidebar-t: #ffffff;
    --topbar-bg: #ffffff;
    --hover-bg:  #f1f5f9;
    --shadow:    0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
}

[data-theme="dark"] {
    --bg:       #0f172a;
    --card-bg:  #1e293b;
    --text:     #e2e8f0;
    --text-muted:#94a3b8;
    --border:   #334155;
    --input-bg: #1e293b;
    --topbar-bg:#1e293b;
    --hover-bg: #334155;
    --shadow:   0 1px 3px rgba(0,0,0,.3);
    --shadow-md:0 4px 6px rgba(0,0,0,.3);
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    font-size: 14px;
    transition: background .2s, color .2s;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Sidebar ── */
.sidebar {
    position: fixed;
    top: 0; left: 0;
    width: var(--sidebar-w);
    height: 100vh;
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform .3s ease;
    overflow-y: auto;
}
.sidebar-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 16px 16px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.sidebar-logo {
    width: 38px; height: 38px;
    background: var(--accent);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; color: #fff;
    flex-shrink: 0;
}
.brand-main  { display: block; font-size: 15px; font-weight: 700; color: #fff; line-height: 1.1; }
.brand-sub   { display: block; font-size: 10px; color: rgba(255,255,255,.55); letter-spacing: .5px; }

.sidebar-nav { list-style: none; padding: 10px 8px; margin: 0; flex: 1; }
.sidebar-nav li { margin: 2px 0; }
.sidebar-link {
    display: flex; align-items: center; gap: 10px;
    padding: 9px 12px;
    border-radius: 8px;
    color: rgba(255,255,255,.75);
    font-size: 13.5px; font-weight: 500;
    transition: all .2s;
}
.sidebar-link:hover, .sidebar-link.active {
    background: rgba(255,255,255,.12);
    color: #fff;
    text-decoration: none;
}
.sidebar-link.active { background: var(--accent); color: #fff; }
.sidebar-link i { font-size: 16px; width: 20px; flex-shrink: 0; }

.sidebar-footer { padding: 12px 10px; border-top: 1px solid rgba(255,255,255,.1); }
.sidebar-user { display: flex; align-items: center; gap: 10px; }
.user-avatar {
    width: 34px; height: 34px;
    background: var(--accent);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.user-info { flex: 1; min-width: 0; }
.user-name { display: block; font-size: 13px; font-weight: 600; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { display: block; font-size: 11px; color: rgba(255,255,255,.5); }
.btn-logout { color: rgba(255,255,255,.6); font-size: 18px; flex-shrink: 0; transition: color .2s; }
.btn-logout:hover { color: #f87171; }

/* ── Main wrapper ── */
.main-wrapper {
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left .3s;
}

/* ── Topbar ── */
.topbar {
    height: var(--topbar-h);
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 14px;
    position: sticky; top: 0; z-index: 900;
    box-shadow: var(--shadow);
}
.topbar-title { font-size: 16px; font-weight: 600; color: var(--text); flex: 1; }
.topbar-time  { font-size: 12px; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.sidebar-toggle {
    background: none; border: none; cursor: pointer;
    color: var(--text); font-size: 22px; padding: 4px; line-height: 1;
    display: none;
}
.btn-icon {
    background: none; border: 1px solid var(--border);
    border-radius: 8px; cursor: pointer;
    color: var(--text); font-size: 16px;
    width: 34px; height: 34px;
    display: flex; align-items: center; justify-content: center;
    transition: all .2s;
}
.btn-icon:hover { background: var(--hover-bg); }

/* ── Content ── */
.content { padding: 24px; flex: 1; }
.flash-wrap { padding: 16px 20px 0; }

/* ── Cards ── */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow);
}
.card-header {
    background: none;
    border-bottom: 1px solid var(--border);
    padding: 14px 18px;
    display: flex; align-items: center; justify-content: space-between;
    gap: 10px;
}
.card-header h5, .card-header h6 { margin: 0; font-weight: 600; font-size: 14px; }
.card-body { padding: 18px; }

/* ── Stat cards ── */
.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 16px;
}
.stat-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; flex-shrink: 0;
}
.stat-label { font-size: 12px; color: var(--text-muted); font-weight: 500; margin-bottom: 2px; }
.stat-value { font-size: 22px; font-weight: 700; line-height: 1; }
.stat-sub   { font-size: 11px; color: var(--text-muted); margin-top: 3px; }

/* ── Tables ── */
.table {
    color: var(--text);
    border-color: var(--border);
    font-size: 13.5px;
}
.table th { font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--text-muted); border-color: var(--border); background: var(--bg); }
.table td { border-color: var(--border); vertical-align: middle; padding: 10px 12px; }
.table tbody tr:hover { background: var(--hover-bg); }
[data-theme="dark"] .table th { background: rgba(255,255,255,.04); }

/* ── Forms ── */
.form-control, .form-select {
    background: var(--input-bg);
    border-color: var(--border);
    color: var(--text);
    font-size: 13.5px;
    border-radius: 8px;
}
.form-control:focus, .form-select:focus {
    background: var(--input-bg);
    color: var(--text);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.form-label { font-weight: 500; font-size: 13px; margin-bottom: 5px; }
[data-theme="dark"] .form-control, [data-theme="dark"] .form-select {
    color: var(--text);
}
[data-theme="dark"] .form-control::placeholder { color: var(--text-muted); }

/* ── Buttons ── */
.btn { font-size: 13.5px; font-weight: 500; border-radius: 8px; }
.btn-primary { background: var(--accent); border-color: var(--accent); }
.btn-primary:hover { background: #1d4ed8; border-color: #1d4ed8; }
.btn-sm { font-size: 12px; padding: 4px 10px; }

/* ── Badges ── */
.badge { font-weight: 500; font-size: 11.5px; }

/* ── Search bar ── */
.search-bar { position: relative; }
.search-bar .form-control { padding-left: 36px; }
.search-bar .bi-search {
    position: absolute; left: 11px; top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted); font-size: 14px; pointer-events: none;
}

/* ── POS layout ── */
.pos-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 20px;
    align-items: start;
}
.cart-item { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.cart-item:last-child { border-bottom: none; }
.cart-name { flex: 1; font-weight: 500; }
.cart-qty  { width: 60px; }
.cart-price { width: 80px; text-align: right; font-weight: 600; }

/* ── Page header ── */
.page-header {
    display: flex; align-items: center;
    justify-content: space-between;
    margin-bottom: 20px; gap: 12px; flex-wrap: wrap;
}
.page-header h4 { margin: 0; font-weight: 700; font-size: 18px; }

/* ── Tabs ── */
.nav-tabs { border-color: var(--border); }
.nav-tabs .nav-link { color: var(--text-muted); border-color: transparent; font-size: 13.5px; font-weight: 500; }
.nav-tabs .nav-link.active { color: var(--accent); border-color: var(--border) var(--border) var(--card-bg); background: var(--card-bg); }
.tab-content { background: var(--card-bg); border: 1px solid var(--border); border-top: none; border-radius: 0 0 10px 10px; padding: 20px; }

/* ── Login ── */
.login-page {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #040d2e, #1a3a8f);
}
.login-card { width: 380px; border-radius: 16px; overflow: hidden; }
.login-header { background: var(--accent); padding: 28px; text-align: center; color: #fff; }
.login-header .logo { font-size: 40px; margin-bottom: 8px; }
.login-header h2 { font-size: 17px; font-weight: 700; margin: 0; }
.login-header p  { font-size: 12px; opacity: .8; margin: 4px 0 0; }
.login-body { padding: 28px; }

/* ── Responsive ── */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-wrapper { margin-left: 0; }
    .sidebar-toggle { display: flex; }
    .pos-grid { grid-template-columns: 1fr; }
    .stat-value { font-size: 18px; }
}

/* ── Misc utilities ── */
.amount-hidden { color: var(--text-muted); font-style: italic; }
.divider-dashed { border-top: 1px dashed var(--border); margin: 12px 0; }
.text-sr { color: var(--text); }
.rounded-pill { border-radius: 50px !important; }
.bg-primary-subtle { background: rgba(37,99,235,.1); color: var(--accent); }
.bg-success-subtle { background: rgba(34,197,94,.1); color: #16a34a; }
.bg-warning-subtle { background: rgba(234,179,8,.12); color: #a16207; }
.bg-danger-subtle  { background: rgba(239,68,68,.1); color: #dc2626; }
.bg-info-subtle    { background: rgba(6,182,212,.1); color: #0e7490; }
.modal-content { background: var(--card-bg); border-color: var(--border); }
.modal-header  { border-color: var(--border); }
.modal-footer  { border-color: var(--border); }