:root {
    --color-bg: #f4f6f8;
    --color-surface: #ffffff;
    --color-border: #e2e5e9;
    --color-text: #1f2933;
    --color-muted: #6b7785;
    --color-primary: #1a56db;
    --color-primary-dark: #14399e;
    --color-success: #0e9f6e;
    --color-warning: #d97706;
    --color-danger: #e02424;
    --radius: 8px;
    --sidebar-width: 240px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
}

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

.sidebar {
    width: var(--sidebar-width);
    background: #10192b;
    color: #cbd5e1;
    display: flex;
    flex-direction: column;
    padding: 20px 0;
    position: sticky;
    top: 0;
    height: 100vh;
}

.sidebar .brand {
    font-weight: 700;
    font-size: 18px;
    color: #fff;
    padding: 0 20px 20px;
}

.sidebar nav { display: flex; flex-direction: column; flex: 1; overflow-y: auto; }

.sidebar nav a {
    padding: 10px 20px;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 14px;
}

.sidebar nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }

.sidebar .logout {
    padding: 12px 20px;
    color: #f87171;
    text-decoration: none;
    font-size: 13px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.content { flex: 1; min-width: 0; }

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 28px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.global-search input {
    width: 320px;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.user-chip {
    font-size: 14px;
    font-weight: 600;
    background: #eef2ff;
    color: var(--color-primary-dark);
    padding: 6px 14px;
    border-radius: 999px;
}

.page { padding: 28px; }

/* ---- Layout helpers ---- */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.grid { display: grid; gap: 20px; margin-bottom: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 18px 20px;
}

.card h2 { margin-top: 0; font-size: 15px; text-transform: uppercase; letter-spacing: .03em; color: var(--color-muted); }

.list { list-style: none; margin: 0; padding: 0; }
.list li { padding: 8px 0; border-bottom: 1px solid var(--color-border); font-size: 14px; }
.list li:last-child { border-bottom: none; }

/* ---- Tables ---- */
.table { width: 100%; border-collapse: collapse; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.table th, .table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--color-border); font-size: 14px; }
.table th { background: #f9fafb; color: var(--color-muted); font-weight: 600; text-transform: uppercase; font-size: 12px; }
.table tr:last-child td { border-bottom: none; }

.pagination { margin-top: 14px; font-size: 13px; color: var(--color-muted); }

/* ---- Badges ---- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    background: #eef2ff;
    color: var(--color-primary-dark);
    text-transform: capitalize;
}
.badge-urgent, .badge-high { background: #fee2e2; color: var(--color-danger); }
.badge-normal { background: #eef2ff; color: var(--color-primary-dark); }
.badge-low { background: #ecfdf5; color: var(--color-success); }

/* ---- Forms & buttons ---- */
.form { display: flex; flex-direction: column; gap: 6px; max-width: 480px; }
.form label { font-size: 13px; font-weight: 600; margin-top: 10px; }
.form input, .form select, .form textarea {
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 14px;
}

.btn {
    display: inline-block;
    padding: 10px 18px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    cursor: pointer;
    border: none;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-block { display: block; width: 100%; text-align: center; margin-top: 16px; }

.muted { color: var(--color-muted); font-size: 13px; }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }

.tabs { margin-bottom: 20px; color: var(--color-muted); font-size: 14px; }

/* ---- Auth pages ---- */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #10192b, #1a56db);
}
.auth-card {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    width: 380px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.auth-card h1 { margin-bottom: 4px; }
.auth-card form { text-align: left; display: flex; flex-direction: column; gap: 6px; }

.alert { padding: 10px 14px; border-radius: var(--radius); font-size: 13px; margin: 14px 0; }
.alert-error { background: #fee2e2; color: var(--color-danger); }
.alert-success { background: #ecfdf5; color: var(--color-success); }