:root {
    --bg: #0f172a;
    --card: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --success: #16a34a;
    --border: #e5e7eb;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f3f4f6;
    color: var(--text);
}

.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: radial-gradient(circle at top, #1e3a8a, var(--bg));
}

.login-card,
.container,
.topbar {
    width: min(100% - 32px, 980px);
    margin-inline: auto;
}

.login-card {
    background: var(--card);
    border-radius: 22px;
    padding: 32px;
    box-shadow: 0 20px 60px rgba(0,0,0,.25);
}

.login-card h1 { margin: 0 0 8px; }
.login-card p { color: var(--muted); margin-top: 0; }

.topbar {
    margin-top: 24px;
    margin-bottom: 18px;
    background: var(--card);
    border-radius: 20px;
    padding: 22px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    box-shadow: 0 10px 30px rgba(15,23,42,.08);
}

.topbar h1 { margin: 0; }
.topbar p { margin: 6px 0 0; color: var(--muted); }

.logout {
    color: var(--danger);
    text-decoration: none;
    font-weight: bold;
}

.container {
    background: var(--card);
    border-radius: 20px;
    padding: 24px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(15,23,42,.08);
}

.grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.field.full { grid-column: 1 / -1; }

label {
    display: block;
    font-weight: 700;
    margin-bottom: 7px;
}

input,
select,
textarea {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 16px;
    background: #fff;
}

textarea { resize: vertical; }

button,
.primary {
    border: 0;
    border-radius: 12px;
    padding: 14px 18px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    font-size: 16px;
    cursor: pointer;
    margin-top: 18px;
}

button:hover,
.primary:hover { background: var(--primary-dark); }

.alert {
    padding: 14px;
    border-radius: 12px;
    margin-bottom: 18px;
    font-weight: 700;
}

.alert.error { background: #fee2e2; color: #991b1b; }
.alert.success { background: #dcfce7; color: #166534; }

@media (max-width: 720px) {
    .grid { grid-template-columns: 1fr; }
    .topbar { align-items: flex-start; flex-direction: column; }
}