/* ============================================
   Smarthome Auth – Styling
   ============================================ */
:root {
    --bg: #0f172a;
    --surface: #1e293b;
    --surface-hover: #334155;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --danger: #ef4444;
    --success: #22c55e;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #334155;
    --radius: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* Layout */
.container { max-width: 900px; margin: 0 auto; padding: 2rem 1rem; width: 100%; }
.center-box {
    max-width: 400px; margin: 4rem auto; padding: 2rem;
    background: var(--surface); border-radius: var(--radius);
    border: 1px solid var(--border);
}

/* Navigation */
nav {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    display: flex; justify-content: space-between; align-items: center;
}
nav .brand { font-weight: 700; font-size: 1.1rem; }
nav .nav-links { display: flex; gap: 1.5rem; align-items: center; }
nav .nav-links a { color: var(--text-muted); font-size: 0.9rem; }
nav .nav-links a:hover { color: var(--text); text-decoration: none; }
.role-badge {
    font-size: 0.7rem; padding: 2px 8px; border-radius: 10px;
    background: var(--primary); color: white; font-weight: 600;
    text-transform: uppercase;
}

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label {
    display: block; margin-bottom: 0.3rem;
    font-size: 0.85rem; color: var(--text-muted);
}
.form-group input, .form-group select {
    width: 100%; padding: 0.6rem 0.8rem;
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius); color: var(--text);
    font-size: 0.95rem;
}
.form-group input:focus, .form-group select:focus {
    outline: none; border-color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-block; padding: 0.6rem 1.2rem;
    border: none; border-radius: var(--radius);
    font-size: 0.9rem; font-weight: 600; cursor: pointer;
    transition: background 0.2s;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); text-decoration: none; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 0.3rem 0.8rem; font-size: 0.8rem; }
.btn-block { width: 100%; }

/* Alerts */
.alert {
    padding: 0.75rem 1rem; border-radius: var(--radius);
    margin-bottom: 1rem; font-size: 0.9rem;
}
.alert-error { background: #451a1a; border: 1px solid var(--danger); color: #fca5a5; }
.alert-success { background: #14532d; border: 1px solid var(--success); color: #86efac; }

/* Tables */
table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
th, td {
    padding: 0.6rem 0.8rem; text-align: left;
    border-bottom: 1px solid var(--border);
}
th { color: var(--text-muted); font-size: 0.8rem; text-transform: uppercase; }
tr:hover { background: var(--surface-hover); }

/* Dashboard cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.5rem; text-align: center;
}
.card h3 { margin-bottom: 0.5rem; }
.card .number { font-size: 2rem; font-weight: 700; color: var(--primary); }

h1, h2 { margin-bottom: 1rem; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.2rem; }