/* ========================================
   登录页面特有样式
   ======================================== */

/* ===== 登录页背景 ===== */
body.login-page {
    background-color: #f0f2f5;
}

/* ===== 主容器 ===== */
.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
    padding-top: 50px;
    padding-left: 20px;
    padding-right: 20px;
}

/* ===== 登录卡片 ===== */
.login-card {
    width: 400px;
    max-width: 90%;
    padding: 40px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    box-sizing: border-box;
    animation: fadeIn 0.4s ease-out;
}

/* ===== 标题 ===== */
.login-title {
    text-align: center;
    margin-bottom: 30px;
    width: 100%;
    color: #1890ff;
    font-size: 24px;
    font-weight: 600;
}

/* ===== 输入框样式 ===== */
.login-input {
    width: 100%;
    margin: 10px 0;
    box-sizing: border-box;
    font-size: 14px;
    line-height: 1.5;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    outline: none;
    transition: all 0.3s ease;
}

.login-input:focus {
    border-color: #1890ff;
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
    animation: inputFocus 0.3s ease;
}

.login-input::placeholder {
    color: #bfbfbf;
}

/* ===== 登录按钮 ===== */
.login-button {
    width: 100%;
    padding: 10px;
    background: #1890ff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    margin-top: 10px;
    transition: background 0.3s ease;
}

.login-button:hover {
    background: #40a9ff;
}

.login-button:active {
    background: #096dd9;
}

/* ===== 错误提示 ===== */
.login-error {
    color: #ff4d4f;
    margin-top: 10px;
    font-size: 12px;
    text-align: center;
}

/* ===== 动画效果 ===== */
@keyframes inputFocus {
    0% {
        box-shadow: 0 0 0 0 rgba(24, 144, 255, 0.4);
    }
    100% {
        box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
    }
}

/* ===== 登录页响应式设计 ===== */

/* 平板设备（≤768px） */
@media screen and (max-width: 768px) {
    .login-container {
        padding-top: 30px;
        padding-left: 15px;
        padding-right: 15px;
    }

    .login-card {
        width: 100%;
        max-width: 100%;
        padding: 30px 20px;
    }

    .login-title {
        font-size: 20px;
        margin-bottom: 25px;
    }

    .login-input {
        padding: 10px 8px;
        font-size: 14px;
    }

    .login-button {
        padding: 10px;
        font-size: 14px;
    }
}

/* 手机设备（≤480px） */
@media screen and (max-width: 480px) {
    .login-container {
        padding-top: 20px;
        padding-left: 10px;
        padding-right: 10px;
        justify-content: flex-start;
    }

    .login-card {
        width: 100%;
        max-width: 100%;
        padding: 25px 15px;
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
    }

    .login-title {
        font-size: 18px;
        margin-bottom: 20px;
    }

    .login-input {
        padding: 10px 8px;
        font-size: 14px;
        margin: 8px 0;
    }

    .login-button {
        padding: 12px;
        font-size: 16px;
        margin-top: 15px;
    }

    .login-error {
        font-size: 12px;
        margin-top: 10px;
    }
}

/* 超小屏幕（≤360px） */
@media screen and (max-width: 360px) {
    .login-card {
        padding: 20px 12px;
    }

    .login-title {
        font-size: 16px;
    }

    .login-input {
        padding: 8px 6px;
        font-size: 14px;
    }

    .login-button {
        padding: 10px;
        font-size: 14px;
    }
}