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

body.login-bg {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0b1a2e 0%, #132f4c 50%, #1a4a7a 100%);
    padding: 24px 16px;
}

.login-hero {
    text-align: center;
    margin-bottom: 32px;
}
.login-hero h1 {
    color: #fff;
    font-size: 24px;
    letter-spacing: 2px;
    margin-bottom: 8px;
}
.login-hero .subhead {
    color: #7bb3e0;
    font-size: 13px;
    letter-spacing: 1px;
}

.login-container {
    width: 100%;
    max-width: 440px;
}

.login-card {
    background: rgba(255, 255, 255, 0.97);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.card-header {
    padding: 22px 28px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #eef2f7;
}
.card-header h2 {
    font-size: 17px;
    color: #1a2a3a;
}
.card-header .badge {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 10px;
    font-weight: 600;
    background: #e8f4fd;
    color: #1a6eb5;
}

.login-form {
    padding: 26px 28px;
}

.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 13px;
    color: #555;
    margin-bottom: 6px;
    font-weight: 600;
}
.form-group input {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    border: 1.5px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: border-color .2s;
}
.form-group input:focus {
    border-color: #1a6eb5;
    box-shadow: 0 0 0 3px rgba(26, 110, 181, .12);
}

.btn {
    display: inline-block;
    width: 100%;
    height: 46px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 2px;
    transition: opacity .2s;
}
.btn:hover { opacity: .88; }
.btn-primary {
    background: linear-gradient(135deg, #1a6eb5, #0d4a82);
    color: #fff;
}
.btn-block { display: block; }

.card-footer {
    padding: 12px 24px 18px;
    font-size: 11px;
    color: #999;
    text-align: center;
}

.login-footer {
    margin-top: 28px;
    font-size: 11px;
    color: #5a7a9a;
    text-align: center;
}
.login-footer a {
    color: #7bb3e0;
    text-decoration: none;
}

.error-msg {
    background: #fdecea;
    color: #c0392b;
    border: 1px solid #f5c6cb;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 16px;
}