:root {
    --primary-color: #2563eb;
    --bg-color: #f8fafc;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
}

.login-card {
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    max-width: 480px;
}

.logo-box {
    background-color: #1a6cf5;
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.login-header p {
    color: #64748b;
}

.form-control {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 15px;
    transition: all 0.2s;
}

/* Login page: shift toggle when password field is invalid */
#password.is-invalid ~ #password-addon {
    right: 20px;
    top: -10px;
}

/* ── Submit button ───────────────────────────────── */
.btn-login {
    background-color: var(--primary-color);
    border-radius: 8px;
    padding: 14px;
}

.btn-login:hover {
    background-color: #1d4ed8;
}

.btn-login:disabled {
    background-color: #94a3b8;
    cursor: not-allowed;
    opacity: 0.8;
}

.forgot-password a {
    color: #64748b;
}

.forgot-password a:hover {
    color: var(--primary-color);
}

.password-addon {
    right: 0;
    top: 0;
    padding: 0 16px;
    color: #64748b;
}

.password-addon:hover {
    color: var(--primary-color);
}