/* ComputerOS by Damerax — Stylesheet
   Professional business software appearance.
   No gradients, no glass effects, no animations, no decorative UI. */

:root {
    --color-bg:        #f4f5f7;
    --color-surface:   #ffffff;
    --color-border:    #d8dce1;
    --color-text:      #1f2328;
    --color-text-muted:#5b6270;
    --color-primary:   #1d4ed8;
    --color-primary-dark: #1739a6;
    --color-danger:    #c0392b;
    --color-success:   #1e7e34;
    --color-warning:   #b7791f;
    --sidebar-bg:      #2b2420;
    --sidebar-text:    #d9cfc2;
    --sidebar-active:  #3c322b;
    --sidebar-accent:  #b8862f;
    --topbar-bg:       #f9f9fb;
    --radius: 4px;
    --font: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: var(--font);
    font-size: 15px;
    background: var(--color-bg);
    color: var(--color-text);
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- App shell ---------- */
.app-shell { display: flex; flex-direction: column; min-height: 100vh; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 16px;
    gap: 16px;
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.shop-name { font-weight: 700; font-size: 17px; color: var(--color-primary); }
.sidebar-toggle {
    display: none;
    background: none; border: none; font-size: 20px; cursor: pointer;
}
.topbar-search { flex: 1; max-width: 420px; }
.topbar-search input {
    width: 100%; padding: 8px 10px; border: 1px solid var(--color-border);
    border-radius: var(--radius); font-size: 14px;
}
.topbar-right { display: flex; align-items: center; gap: 10px; }
.user-badge { font-size: 14px; color: var(--color-primary); font-weight: 600; }

.app-body { display: flex; flex: 1; }

.sidebar {
    width: 220px;
    flex-shrink: 0;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    min-height: calc(100vh - 53px);
}
.nav-list { list-style: none; margin: 0; padding: 10px 0; }
.nav-list a {
    display: block;
    padding: 11px 20px;
    color: var(--sidebar-text);
    font-size: 14.5px;
    border-left: 3px solid transparent;
}
.nav-list a:hover { background: var(--sidebar-active); text-decoration: none; }
.nav-list a.active {
    background: var(--sidebar-active);
    color: #fff;
    border-left-color: var(--sidebar-accent);
    font-weight: 600;
}

.main-content { flex: 1; padding: 24px; max-width: 100%; overflow-x: auto; }

/* ---------- Page header ---------- */
.page-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 18px; flex-wrap: wrap; gap: 10px;
}
.page-header h1 { font-size: 20px; margin: 0; }

/* ---------- Cards ---------- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 18px;
    margin-bottom: 18px;
}
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px;
}
.stat-card .stat-value { font-size: 26px; font-weight: 700; }
.stat-card .stat-label { font-size: 13px; color: var(--color-text-muted); }
.stat-card.alert-low { border-color: var(--color-danger); }
.stat-card.alert-low .stat-value { color: var(--color-danger); }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; background: var(--color-surface); font-size: 14.5px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); }
th { background: #f0f1f4; font-weight: 600; font-size: 13.5px; text-transform: uppercase; letter-spacing: .02em; color: var(--color-text-muted); }
tr:hover td { background: #fafbfc; }
.table-wrap { border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.row-low-stock td { background: #fdecea; }

/* ---------- Forms ---------- */
form label { display: block; font-size: 13.5px; font-weight: 600; margin: 12px 0 5px; }
input[type=text], input[type=password], input[type=number], input[type=date],
input[type=datetime-local], input[type=email], input[type=tel], select, textarea {
    width: 100%; padding: 9px 10px; border: 1px solid var(--color-border);
    border-radius: var(--radius); font-size: 14.5px; font-family: var(--font); background: #fff;
}
textarea { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0 16px; }
.form-actions { margin-top: 20px; display: flex; gap: 10px; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-block; padding: 9px 16px; border-radius: var(--radius);
    border: 1px solid var(--color-primary); background: var(--color-primary);
    color: #fff; font-size: 14px; font-weight: 600; cursor: pointer;
}
.btn:hover { background: var(--color-primary-dark); text-decoration: none; }
.btn-outline { background: transparent; color: var(--color-primary); }
.btn-outline:hover { background: #eef2ff; }
.btn-danger { background: var(--color-danger); border-color: var(--color-danger); }
.btn-danger:hover { background: #a5301f; }
.btn-secondary { background: #5b6270; border-color: #5b6270; }
.btn-small { padding: 5px 10px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- Alerts / badges ---------- */
.alert { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 14px; font-size: 14px; }
.alert-error   { background: #fdecea; color: var(--color-danger); border: 1px solid #f3c3bd; }
.alert-success { background: #e9f7ec; color: var(--color-success); border: 1px solid #bfe6c8; }
.alert-warning { background: #fdf3e0; color: var(--color-warning); border: 1px solid #f0dba9; }

.badge { display: inline-block; padding: 3px 9px; border-radius: 10px; font-size: 12px; font-weight: 600; }
.badge-active, .badge-paid, .badge-delivered   { background: #e9f7ec; color: var(--color-success); }
.badge-inactive, .badge-cancelled, .badge-unpaid { background: #f0f1f4; color: var(--color-text-muted); }
.badge-pending, .badge-partial, .badge-waiting_parts { background: #fdf3e0; color: var(--color-warning); }
.badge-received, .badge-diagnosing, .badge-in_repair { background: #e8eefd; color: var(--color-primary); }
.badge-ready { background: #e9f7ec; color: var(--color-success); }

/* ---------- Login ---------- */
.login-body { display: flex; align-items: center; justify-content: center; height: 100vh; background: var(--color-bg); }
.login-card {
    background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius); padding: 36px; width: 340px;
}
.login-card h1 { margin: 0 0 2px; font-size: 20px; }
.login-tagline { margin: 0 0 20px; color: var(--color-text-muted); font-size: 13px; }

/* ---------- Billing / POS ---------- */
.pos-layout { display: grid; grid-template-columns: 1.6fr 1fr; gap: 18px; align-items: start; }
.pos-totals-row { display: flex; justify-content: space-between; padding: 6px 0; font-size: 14.5px; }
.pos-totals-row.grand-total { font-size: 19px; font-weight: 700; border-top: 1px solid var(--color-border); margin-top: 8px; padding-top: 12px; }

/* ---------- PC Builder ---------- */
.builder-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* ---------- Print (invoices / job cards) ---------- */
@media print {
    .topbar, .sidebar, .no-print { display: none !important; }
    .main-content { padding: 0; }
    body { background: #fff; }
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
    .sidebar-toggle { display: block; }
    .sidebar { position: fixed; left: -240px; top: 53px; z-index: 20; }
    .sidebar.open { left: 0; }
    .pos-layout, .builder-grid { grid-template-columns: 1fr; }
}
.login-footer{
    margin-top:20px;
    padding-top:16px;
    border-top:1px solid #e5e7eb;
    text-align:center;
    font-size:13px;
    color:#6b7280;
}

.login-footer a{
    color:#2563eb;
    text-decoration:none;
    font-weight:600;
}

.login-footer a:hover{
    text-decoration:underline;
}