:root {
    /* --- 高级感配色定义 --- */
    /* 主色调：沉稳的绛红色/玫瑰木色 */
    --primary-hue: #BA4A4A; 
    --primary-dark: #963a3a;
    /* 强调色：流光金 */
    --accent-gold: #C7A86B;
    --accent-gold-light: #E5C17C;
    
    /* 文字颜色 */
    --text-dark: #2C2C2C; 
    --text-gray: #686868;
    --text-light: #999999;
    --text-on-primary: #FFFFFF;

    /* 背景体系 */
    --bg-main: #FDFBF9; 
    --bg-card: #FFFFFF;
    --bg-card-alt: #FAFAFA;

    /* 尺寸与质感 */
    --border-radius-card: 16px;
    --border-radius-btn: 50px;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 20px 40px rgba(186, 74, 74, 0.12);
    --card-border: 1px solid rgba(0,0,0,0.06);
    
    /* 字体栈 */
    --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "Times New Roman", serif;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text-dark);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 40px;
    background: var(--bg-card);
    border-radius: var(--border-radius-card);
    box-shadow: var(--shadow-soft);
    border: var(--card-border);
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}

.login-container:hover {
    box-shadow: var(--shadow-hover);
}

/* 顶部装饰条 */
.login-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-hue);
}

.login-logo {
    width: 60px;
    height: auto;
    margin-bottom: 10px;
}

header {
    margin-bottom: 35px;
}

header i {
    font-size: 42px;
    color: var(--primary-hue);
    display: block;
    margin-bottom: 10px;
}

h1 {
    font-family: var(--font-serif); /* 使用衬线体提升高级感 */
    font-size: 24px;
    font-weight: 600;
    color: var(--text-dark);
    letter-spacing: 1px;
}

.input-group {
    text-align: left;
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 8px;
    font-weight: 500;
}

label i {
    margin-right: 5px;
    color: var(--primary-hue);
}

input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 8px;
    font-size: 14px;
    background: var(--bg-card-alt);
    color: var(--text-dark);
    transition: all 0.2s ease;
    font-family: var(--font-sans);
}

input:focus {
    border-color: var(--primary-hue);
    background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(186, 74, 74, 0.1);
    outline: none;
}

button {
    width: 100%;
    padding: 12px;
    margin-top: 15px;
    background: var(--primary-hue);
    color: var(--text-on-primary);
    border: none;
    border-radius: var(--border-radius-btn); /* 使用胶囊状圆角 */
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(186, 74, 74, 0.2);
}

button:hover:not(:disabled) {
    background: var(--primary-dark);
    box-shadow: 0 6px 16px rgba(186, 74, 74, 0.3);
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    background: var(--text-light);
    box-shadow: none;
}

.footer-note {
    margin-top: 30px;
    color: var(--text-light);
    font-size: 12px;
    border-top: 1px solid rgba(0,0,0,0.06);
    padding-top: 15px;
}

/* ========================================= */
/* === SweetAlert2 弹窗适配 === */
/* ========================================= */

div:where(.swal2-container) div:where(.swal2-popup) {
    border-radius: var(--border-radius-card) !important;
    font-family: var(--font-sans) !important;
    padding: 30px !important;
    width: 360px !important;
    background: var(--bg-card) !important;
    box-shadow: var(--shadow-hover) !important;
}

div:where(.swal2-container) .swal2-title {
    font-family: var(--font-serif) !important;
    font-size: 20px !important;
    color: var(--text-dark) !important;
    font-weight: 600 !important;
}

div:where(.swal2-container) .swal2-html-container {
    color: var(--text-gray) !important;
    font-size: 14px !important;
}

div:where(.swal2-container) button.swal2-styled.swal2-confirm {
    background-color: var(--primary-hue) !important;
    border-radius: var(--border-radius-btn) !important;
    box-shadow: 0 4px 12px rgba(186, 74, 74, 0.2) !important;
    font-size: 14px !important;
    padding: 10px 25px !important;
    transition: all 0.2s ease !important;
}

div:where(.swal2-container) button.swal2-styled.swal2-confirm:hover {
    background-color: var(--primary-dark) !important;
    box-shadow: 0 6px 16px rgba(186, 74, 74, 0.3) !important;
}

div:where(.swal2-container) .swal2-timer-progress-bar {
    background: var(--primary-hue) !important;
}

/* ========================================= */
/* === 底部备案信息样式 === */
/* ========================================= */

.site-footer {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    text-align: center;
    font-size: 13px;
    z-index: 10;
}

.footer-content {
    display: block;
    width: 100%;
}

.footer-content a {
    color: var(--text-gray); /* 适配浅色背景 */
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s;
}

.footer-content a:hover {
    color: var(--primary-hue);
}

.copyright {
    display: block;
    margin-top: 5px;
    color: var(--text-light);
}

@media (max-width: 480px) {
    .site-footer {
        bottom: 10px;
        font-size: 11px;
    }
    
    .footer-content a {
        display: inline-block;
        margin: 2px 5px;
    }

    body {
        position: relative;
        min-height: 100vh;
        padding-bottom: 60px;
    }
}