body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
    background: #f5f5f7;
}

.page-container {
    max-width: 960px;
    margin: 0 auto;
}

.login-wrapper {
    min-height: calc(100vh - 56px);
    /* navbar 分をなんとなく引く */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px 40px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: #ffffff;
    border: 1px solid #ddd;
    border-radius: 12px;
    padding: 24px 24px 20px;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.04);
}

.login-title {
    margin: 0 0 4px;
    font-size: 20px;
    font-weight: 600;
    text-align: center;
}

.login-subtitle {
    margin: 0 0 16px;
    font-size: 13px;
    color: #666;
    text-align: center;
}

.form-row {
    margin-bottom: 14px;
}

.form-row label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 4px;
}

.form-row input[type="text"],
.form-row input[type="password"] {
    width: 100%;
    box-sizing: border-box;
    padding: 8px 10px;
    font-size: 14px;
    border-radius: 6px;
    border: 1px solid #ccc;
}

.form-row input[type="text"]:focus,
.form-row input[type="password"]:focus {
    outline: none;
    border-color: #0366d6;
    box-shadow: 0 0 0 1px rgba(3, 102, 214, 0.2);
}

.login-actions {
    margin-top: 8px;
}

.btn-primary {
    width: 100%;
    padding: 9px 12px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    border: 1px solid #0366d6;
    background: #0366d6;
    color: #fff;
    cursor: pointer;
}

.btn-primary:hover {
    background: #0252aa;
}

.login-error {
    margin-bottom: 12px;
    padding: 8px 10px;
    border-radius: 6px;
    border: 1px solid #f44336;
    background: #ffebee;
    color: #c62828;
    font-size: 13px;
}