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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

nav {
    background: #1a1a2e;
    color: #fff;
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.1rem;
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: #ccc;
    text-decoration: none;
}

.nav-links a:hover {
    color: #fff;
}

.nav-user {
    color: #888;
    font-size: 0.9rem;
}

main {
    max-width: 1100px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Flash messages */
.flash-messages {
    margin-bottom: 1rem;
}

.flash {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.flash-error { background: #fdecea; color: #b71c1c; }
.flash-success { background: #e8f5e9; color: #1b5e20; }
.flash-info { background: #e3f2fd; color: #0d47a1; }

/* Login */
.login-container {
    max-width: 400px;
    margin: 4rem auto;
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.login-container h1 {
    margin-bottom: 1.5rem;
    text-align: center;
}

label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
    font-size: 0.9rem;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
}

button {
    width: 100%;
    padding: 0.6rem;
    background: #1a1a2e;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
}

button:hover {
    background: #16213e;
}

/* 2FA setup */
.setup-2fa {
    text-align: center;
}

.qr-code {
    margin: 1rem 0;
    max-width: 200px;
}

/* Dashboard */
.dashboard h1 {
    margin-bottom: 1.5rem;
}

.dashboard h2 {
    margin: 1.5rem 0 0.75rem;
}

.status-cards {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.card {
    flex: 1;
    background: #fff;
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.card-value {
    font-size: 2.5rem;
    font-weight: 700;
}

.card-label {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.25rem;
}

.card-online .card-value { color: #2e7d32; }
.card-stale .card-value { color: #f57f17; }
.card-offline .card-value { color: #c62828; }

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

th, td {
    padding: 0.75rem 1rem;
    text-align: left;
}

th {
    background: #f0f0f0;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

tr:not(:last-child) td {
    border-bottom: 1px solid #eee;
}

.empty {
    text-align: center;
    color: #999;
    padding: 2rem;
}

/* Status badges */
.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-online { background: #e8f5e9; color: #2e7d32; }
.badge-stale { background: #fff8e1; color: #f57f17; }
.badge-offline { background: #fdecea; color: #c62828; }