/* =========================================================
   MacBook Store Manager — UI stylesheet
   Mobile-first, CSS custom properties, no framework.
   ========================================================= */

:root {
    --bg: #0f172a;
    --bg-soft: #1e293b;
    --surface: #ffffff;
    --surface-alt: #f8fafc;
    --border: #e2e8f0;
    --text: #0f172a;
    --text-soft: #64748b;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-soft: #dbeafe;
    --success: #16a34a;
    --success-soft: #dcfce7;
    --warning: #d97706;
    --warning-soft: #fef3c7;
    --danger: #dc2626;
    --danger-soft: #fee2e2;
    --info: #0891b2;
    --info-soft: #cffafe;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.12);
    --sidebar-w: 250px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: var(--font);
    color: var(--text);
    background: var(--surface-alt);
    font-size: 15px;
    line-height: 1.5;
}

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

/* ---------------- Auth layout ---------------- */
.auth-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    padding: 1rem;
}
.auth-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 400px;
}
.auth-card h1 { margin: 0 0 0.25rem; font-size: 1.5rem; }
.auth-card .subtitle { color: var(--text-soft); margin-bottom: 1.5rem; font-size: 0.9rem; }

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

.sidebar {
    width: var(--sidebar-w);
    background: var(--bg);
    color: #cbd5e1;
    flex-shrink: 0;
    position: fixed;
    top: 0; bottom: 0; left: 0;
    overflow-y: auto;
    transition: transform 0.2s ease;
    z-index: 40;
}
.sidebar__brand {
    padding: 1.25rem 1.25rem;
    font-weight: 700;
    color: #fff;
    font-size: 1.05rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex; align-items: center; gap: 0.5rem;
}
.sidebar__brand .logo { font-size: 1.3rem; }
.sidebar__section { padding: 0.75rem 1.25rem 0.35rem; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: #64748b; }
.sidebar a.nav-link {
    display: flex; align-items: center; gap: 0.6rem;
    padding: 0.55rem 1.25rem;
    color: #cbd5e1;
    font-size: 0.9rem;
}
.sidebar a.nav-link:hover { background: rgba(255,255,255,0.06); color: #fff; text-decoration: none; }
.sidebar a.nav-link.active { background: var(--primary); color: #fff; }
.sidebar a.nav-link .ico { width: 18px; text-align: center; }

.main { flex: 1; margin-left: var(--sidebar-w); display: flex; flex-direction: column; min-width: 0; }

.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; z-index: 30;
}
.topbar .menu-toggle { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; }
.topbar .page-title { font-weight: 600; font-size: 1.05rem; }
.topbar .user-box { display: flex; align-items: center; gap: 0.75rem; font-size: 0.85rem; }
.topbar .user-box .avatar {
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--primary-soft); color: var(--primary-dark);
    display: flex; align-items: center; justify-content: center; font-weight: 700;
}

.content { padding: 1.5rem; flex: 1; }

/* ---------------- Typography ---------------- */
h1, h2, h3 { margin-top: 0; }
.page-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.25rem; }
.page-header h1 { font-size: 1.4rem; margin: 0; }
.muted { color: var(--text-soft); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

/* ---------------- Cards ---------------- */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.25rem;
}
.card__header { padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
.card__body { padding: 1.25rem; }

/* Stat cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 1rem; margin-bottom: 1.25rem; }
.stat {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 1.1rem 1.25rem; box-shadow: var(--shadow);
}
.stat .label { color: var(--text-soft); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }
.stat .value { font-size: 1.6rem; font-weight: 700; margin-top: 0.25rem; }
.stat .value.sm { font-size: 1.2rem; }

/* ---------------- Tables ---------------- */
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
table.data th, table.data td { padding: 0.6rem 0.75rem; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data th { background: var(--surface-alt); font-weight: 600; color: var(--text-soft); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }
table.data tbody tr:hover { background: var(--surface-alt); }
table.data td.wrap, table.data th.wrap { white-space: normal; }

/* ---------------- Badges ---------------- */
.badge { display: inline-block; padding: 0.15rem 0.55rem; border-radius: 999px; font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.02em; }
.badge.gray { background: var(--border); color: var(--text-soft); }
.badge.blue { background: var(--primary-soft); color: var(--primary-dark); }
.badge.green { background: var(--success-soft); color: var(--success); }
.badge.yellow { background: var(--warning-soft); color: var(--warning); }
.badge.red { background: var(--danger-soft); color: var(--danger); }
.badge.cyan { background: var(--info-soft); color: var(--info); }

/* ---------------- Buttons ---------------- */
.btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.5rem 0.9rem; border-radius: var(--radius-sm);
    border: 1px solid transparent; font-size: 0.88rem; font-weight: 600;
    cursor: pointer; background: var(--surface-alt); color: var(--text);
    text-decoration: none; transition: background 0.15s;
}
.btn:hover { text-decoration: none; filter: brightness(0.97); }
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.success { background: var(--success); color: #fff; }
.btn.danger { background: var(--danger); color: #fff; }
.btn.warning { background: var(--warning); color: #fff; }
.btn.outline { background: transparent; border-color: var(--border); }
.btn.sm { padding: 0.3rem 0.6rem; font-size: 0.8rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------------- Forms ---------------- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
.form-group { margin-bottom: 1rem; }
.form-group.full { grid-column: 1 / -1; }
label { display: block; font-size: 0.82rem; font-weight: 600; margin-bottom: 0.3rem; color: #334155; }
label .req { color: var(--danger); }
input[type=text], input[type=email], input[type=password], input[type=number],
input[type=date], input[type=file], select, textarea {
    width: 100%; padding: 0.55rem 0.7rem; border: 1px solid var(--border);
    border-radius: var(--radius-sm); font-size: 0.9rem; font-family: inherit; background: #fff; color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
textarea { min-height: 80px; resize: vertical; }
.field-error { color: var(--danger); font-size: 0.78rem; margin-top: 0.25rem; }
.form-actions { display: flex; gap: 0.6rem; margin-top: 0.5rem; flex-wrap: wrap; }
.help { font-size: 0.78rem; color: var(--text-soft); margin-top: 0.25rem; }

/* ---------------- Alerts ---------------- */
.alert { padding: 0.75rem 1rem; border-radius: var(--radius-sm); margin-bottom: 1rem; font-size: 0.88rem; }
.alert.success { background: var(--success-soft); color: var(--success); }
.alert.error { background: var(--danger-soft); color: var(--danger); }
.alert.info { background: var(--info-soft); color: var(--info); }
.alert ul { margin: 0.25rem 0 0; padding-left: 1.1rem; }

/* ---------------- Misc ---------------- */
.row { display: flex; gap: 1rem; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 220px; }
.toolbar { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; margin-bottom: 1rem; }
.toolbar .grow { flex: 1; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.pill-list { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.empty { text-align: center; padding: 2.5rem 1rem; color: var(--text-soft); }
.divider { height: 1px; background: var(--border); margin: 1rem 0; }
.thumb { width: 90px; height: 68px; object-fit: cover; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.checkbox-inline { display: flex; align-items: center; gap: 0.4rem; }
.checkbox-inline input { width: auto; }

@media (max-width: 900px) {
    .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main { margin-left: 0; }
    .topbar .menu-toggle { display: block; }
}