* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    background: linear-gradient(135deg, #eef5ff 0%, #ffffff 45%, #f5f7fb 100%);
}

.login-page {
    min-height: 100vh;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    width: 360px;
    max-width: 100%;
    padding: 36px 32px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 16px 50px rgba(30, 68, 140, 0.12);
}

.login-title {
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-subtitle {
    text-align: center;
    font-size: 14px;
    color: #7b8497;
    margin-bottom: 28px;
}

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

.form-item input {
    width: 100%;
    height: 44px;
    border: 1px solid #d8deea;
    border-radius: 10px;
    padding: 0 14px;
    font-size: 14px;
    outline: none;
}

.form-item input:focus {
    border-color: #1f6fff;
    box-shadow: 0 0 0 3px rgba(31,111,255,.12);
}

button {
    width: 100%;
    height: 44px;
    border: none;
    border-radius: 10px;
    background: #1f6fff;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

.center-toast {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(.96);
    min-width: 220px;
    max-width: 420px;
    padding: 16px 22px;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 16px 50px rgba(0,0,0,.18);
    font-size: 15px;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: all .2s;
    z-index: 9999;
}

.center-toast.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.center-toast.success {
    color: #16a34a;
}

.center-toast.error {
    color: #dc2626;
}