/* ── 登录页面样式 ── */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: #0f0f1a;
    color: #e0e0e0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-card {
    background: #1e1e2e;
    border: 1px solid #333;
    border-radius: 12px;
    padding: 40px 32px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.login-card h1 {
    font-size: 24px;
    text-align: center;
    margin-bottom: 8px;
    color: #e0e0e0;
}

.login-card .subtitle {
    text-align: center;
    color: #888;
    font-size: 14px;
    margin-bottom: 24px;
}

.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.alert-blocked {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.5);
    color: #ef4444;
    text-align: center;
    font-weight: 600;
    padding: 24px 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: #a0a0a0;
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    background: #2a2a3e;
    border: 1px solid #444;
    border-radius: 8px;
    padding: 12px 16px;
    color: #e0e0e0;
    font-size: 15px;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: #4ade80;
}

.form-group input::placeholder {
    color: #666;
}

.btn-login {
    width: 100%;
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-login:hover {
    background: #2563eb;
}

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

@media (max-width: 480px) {
    .login-container {
        padding: 16px;
    }

    .login-card {
        padding: 32px 24px;
    }
}