* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f7fb;
    color: #1f2937;
}

.container {
    width: min(100%, 1100px);
    margin: 0 auto;
    padding: 20px;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, #eef4ff, #f8fafc);
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
    padding: 24px;
}

.brand {
    text-align: center;
    margin-bottom: 20px;
}

.brand h1 {
    margin: 0;
    font-size: 1.5rem;
}

.brand small {
    color: #666;
}

.form-group {
    margin-bottom: 16px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #374151;
}

input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    font-size: 1rem;
    background: white;
}

input:focus {
    outline: 2px solid rgba(13, 110, 253, 0.2);
    border-color: #0d6efd;
}

.btn {
    display: inline-block;
    width: 100%;
    border: 0;
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

.btn-primary {
    background: #0d6efd;
    color: white;
}

.btn-light {
    background: #fff;
    color: #0d6efd;
    border: 1px solid #dfe7ff;
}

.alert {
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.alert-danger {
    background: #f8d7da;
    color: #842029;
    border: 1px solid #f5c2c7;
}

.topbar {
    background: #0d6efd;
    color: white;
    border-radius: 12px;
    padding: 18px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
    margin-bottom: 18px;
}

.mt-3 {
    margin-top: 1rem;
}

.mb-3 {
    margin-bottom: 1rem;
}