/* ==========================================================================
   personweb · 浅色极光渐变主题 (Aurora Mist)
   --------------------------------------------------------------------------
   纯样式文件：不含任何功能逻辑，不依赖任何图片资源。
   必须在 Bootstrap CSS 之后加载，才能覆盖其默认样式。
   背景为纯 CSS 多层渐变；如需换成照片，只需修改 --app-bg-image。
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
    /* 品牌色 */
    --app-brand: #4f46e5;
    --app-brand-strong: #4338ca;
    --app-brand-deep: #3730a3;
    --app-brand-soft: rgba(79, 70, 229, .12);
    --app-sky: #0ea5e9;
    --app-violet: #8b5cf6;

    /* 文本 */
    --app-heading: #1e1b4b;
    --app-text: #0f172a;
    --app-text-soft: #475569;
    --app-muted: #64748b;

    /* 表面 */
    --app-surface: rgba(255, 255, 255, .92);
    --app-surface-solid: #ffffff;
    --app-border: rgba(15, 23, 42, .08);
    --app-border-strong: rgba(79, 70, 229, .22);

    /* 圆角 */
    --app-radius-sm: 10px;
    --app-radius: 16px;
    --app-radius-lg: 20px;

    /* 阴影 */
    --app-shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
    --app-shadow: 0 10px 30px rgba(15, 23, 42, .08);
    --app-shadow-hover: 0 18px 44px rgba(79, 70, 229, .18);

    /* 背景图开关：改成 url('/images/bg.jpg') 即可启用照片背景，
       并把 body 的 class 加上 has-photo（或直接改 body::before 规则）。 */
    --app-bg-image: none;

    /* 让 Bootstrap 的链接色跟随品牌色 */
    --bs-primary: #4f46e5;
    --bs-primary-rgb: 79, 70, 229;
    --bs-link-color: #4f46e5;
    --bs-link-color-rgb: 79, 70, 229;
    --bs-link-hover-color: #3730a3;
    --bs-link-hover-color-rgb: 55, 48, 163;
    --bs-body-color: #0f172a;
    --bs-body-bg: transparent;
}

/* ---------- 2. 背景层 ---------- */
html {
    min-height: 100%;
    background-color: #eef2ff;
}

body {
    min-height: 100vh;
    color: var(--app-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
        "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: transparent;
    display: flex;
    flex-direction: column;
}

/* 固定定位的渐变层：比 background-attachment: fixed 在移动端更稳定 */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image:
        radial-gradient(1000px 620px at 6% -12%, rgba(99, 102, 241, .45), transparent 62%),
        radial-gradient(920px 580px at 94% 2%, rgba(56, 189, 248, .38), transparent 62%),
        radial-gradient(820px 560px at 76% 106%, rgba(168, 85, 247, .3), transparent 60%),
        radial-gradient(640px 460px at 22% 96%, rgba(45, 212, 191, .22), transparent 62%),
        linear-gradient(150deg, #e6e9ff 0%, #f3f7ff 44%, #e5f5ff 100%);
}

/* 可选：照片背景（需同时把 --app-bg-image 换成 url(...)） */
body.has-photo::before {
    background-image:
        linear-gradient(180deg, rgba(238, 242, 255, .58), rgba(248, 250, 252, .78)),
        var(--app-bg-image);
    background-size: cover, cover;
    background-position: center, center;
    background-repeat: no-repeat, no-repeat;
}

::selection {
    background: rgba(79, 70, 229, .18);
    color: #1e1b4b;
}

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4, h5, h6 {
    color: var(--app-heading);
    font-weight: 600;
}

.app-content {
    padding-bottom: 1rem;
    flex: 1 0 auto;
    width: 100%;
}

.app-content h4 {
    font-weight: 700;
    letter-spacing: .01em;
    margin-bottom: 0;
}

.app-content hr {
    border: 0;
    border-top: 1px solid var(--app-border);
    opacity: 1;
    margin: 1rem 0 1.5rem;
}

code {
    color: var(--app-brand-strong);
    background: rgba(79, 70, 229, .08);
    padding: .1rem .38rem;
    border-radius: 6px;
    font-size: .86em;
}

.text-muted {
    color: var(--app-muted) !important;
}

/* ---------- 4. 导航栏 ---------- */
.navbar.app-navbar {
    position: sticky;
    top: 0;
    z-index: 1030;
    padding-top: .6rem;
    padding-bottom: .6rem;
    background: linear-gradient(120deg, #1e293b 0%, #312e81 55%, #1e3a8a 100%);
    box-shadow: 0 8px 24px rgba(15, 23, 42, .18);
    -webkit-backdrop-filter: saturate(140%) blur(10px);
    backdrop-filter: saturate(140%) blur(10px);
}

.navbar.app-navbar .navbar-brand {
    font-weight: 700;
    letter-spacing: .02em;
    display: inline-flex;
    align-items: center;
}

.navbar.app-navbar .navbar-brand i {
    color: #a5b4fc;
}

.navbar.app-navbar .nav-link {
    color: rgba(255, 255, 255, .82);
    border-radius: 999px;
    padding: .35rem .85rem;
    margin: .1rem .05rem;
    transition: background-color .2s ease, color .2s ease;
}

.navbar.app-navbar .nav-link:hover,
.navbar.app-navbar .nav-link:focus {
    color: #ffffff;
    background: rgba(255, 255, 255, .14);
}

.navbar.app-navbar .navbar-toggler {
    border-color: rgba(255, 255, 255, .3);
}

.navbar.app-navbar .btn-outline-light {
    border-radius: 999px;
    --bs-btn-border-color: rgba(255, 255, 255, .55);
}

/* ---------- 5. 卡片 ---------- */
.card {
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius);
    background: var(--app-surface);
    box-shadow: var(--app-shadow);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.card.shadow-sm {
    box-shadow: var(--app-shadow) !important;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--app-shadow-hover);
    border-color: var(--app-border-strong);
}

.card-title {
    font-weight: 600;
    color: var(--app-heading);
}

/* 首页模块卡片 */
.module-card {
    position: relative;
    overflow: hidden;
}

.module-card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--app-brand), var(--app-sky), var(--app-violet));
    opacity: 0;
    transition: opacity .25s ease;
}

.module-card:hover::after {
    opacity: 1;
}

.module-code {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    margin: 0 auto .85rem;
    border-radius: 14px;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--app-brand-strong);
    background: linear-gradient(135deg, rgba(79, 70, 229, .15), rgba(14, 165, 233, .15));
}

/* ---------- 6. 表格 ---------- */
.table-responsive {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius);
    box-shadow: var(--app-shadow);
    padding: .35rem .65rem;
}

.table {
    --bs-table-bg: transparent;
    color: var(--app-text-soft);
    margin-bottom: 0;
}

.table > thead > tr > th {
    background-color: #f1f5f9;
    color: var(--app-text-soft);
    font-weight: 600;
    font-size: .9rem;
    letter-spacing: .01em;
    white-space: nowrap;
    border-bottom: 1px solid var(--app-border);
    padding: .8rem .75rem;
}

.table > tbody > tr > td {
    border-color: rgba(15, 23, 42, .06);
    padding: .75rem;
    vertical-align: middle;
}

.table-striped {
    --bs-table-striped-bg: rgba(15, 23, 42, .022);
}

.table-hover {
    --bs-table-hover-bg: rgba(79, 70, 229, .06);
}

/* ---------- 7. 按钮 ---------- */
.btn {
    border-radius: .65rem;
    font-weight: 500;
    transition: transform .15s ease, box-shadow .15s ease, background-color .15s ease;
}

.btn-sm {
    border-radius: .5rem;
}

.btn:active {
    transform: translateY(1px);
}

.btn:focus-visible {
    box-shadow: 0 0 0 .22rem rgba(79, 70, 229, .3);
}

.btn-primary {
    --bs-btn-bg: #4f46e5;
    --bs-btn-border-color: #4f46e5;
    --bs-btn-hover-bg: #4338ca;
    --bs-btn-hover-border-color: #4338ca;
    --bs-btn-active-bg: #3730a3;
    --bs-btn-active-border-color: #3730a3;
    --bs-btn-disabled-bg: #a5b4fc;
    --bs-btn-disabled-border-color: #a5b4fc;
    background-image: linear-gradient(135deg, #4f46e5, #6366f1);
    box-shadow: 0 4px 12px rgba(79, 70, 229, .25);
}

.btn-primary:hover {
    background-image: linear-gradient(135deg, #4338ca, #4f46e5);
    box-shadow: 0 6px 16px rgba(79, 70, 229, .32);
}

.btn-outline-primary {
    --bs-btn-color: #4f46e5;
    --bs-btn-border-color: rgba(79, 70, 229, .45);
    --bs-btn-hover-bg: #4f46e5;
    --bs-btn-hover-border-color: #4f46e5;
    --bs-btn-active-bg: #4338ca;
    --bs-btn-active-border-color: #4338ca;
}

.btn-outline-secondary,
.btn-outline-danger {
    border-radius: .65rem;
}

.btn-secondary {
    --bs-btn-bg: #64748b;
    --bs-btn-border-color: #64748b;
    --bs-btn-hover-bg: #475569;
    --bs-btn-hover-border-color: #475569;
}

.btn-success {
    --bs-btn-bg: #10b981;
    --bs-btn-border-color: #10b981;
    --bs-btn-hover-bg: #059669;
    --bs-btn-hover-border-color: #059669;
}

.btn-warning {
    --bs-btn-bg: #f59e0b;
    --bs-btn-border-color: #f59e0b;
    --bs-btn-color: #3f2d05;
    --bs-btn-hover-bg: #fbbf24;
    --bs-btn-hover-border-color: #fbbf24;
    --bs-btn-hover-color: #3f2d05;
    --bs-btn-active-bg: #d97706;
    --bs-btn-active-border-color: #d97706;
    --bs-btn-active-color: #ffffff;
}

.btn-danger {
    --bs-btn-bg: #ef4444;
    --bs-btn-border-color: #ef4444;
    --bs-btn-hover-bg: #dc2626;
    --bs-btn-hover-border-color: #dc2626;
}

/* ---------- 8. 表单 ---------- */
.form-label {
    font-weight: 600;
    font-size: .92rem;
    color: #334155;
}

.form-control,
.form-select {
    border-radius: var(--app-radius-sm);
    border-color: rgba(15, 23, 42, .12);
    padding: .55rem .8rem;
    background-color: #ffffff;
    transition: border-color .18s ease, box-shadow .18s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: rgba(79, 70, 229, .55);
    box-shadow: 0 0 0 .22rem rgba(79, 70, 229, .15);
    background-color: #ffffff;
}

.form-control[readonly] {
    background-color: #f8fafc;
    color: var(--app-muted);
}

.form-check-input:checked {
    background-color: var(--app-brand);
    border-color: var(--app-brand);
}

.form-check-input:focus {
    border-color: rgba(79, 70, 229, .5);
    box-shadow: 0 0 0 .2rem rgba(79, 70, 229, .15);
}

.form-check-label {
    color: #334155;
}

/* 表单页的白色面板容器 */
.app-form-card {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius);
    box-shadow: var(--app-shadow);
    padding: 1.75rem;
    max-width: 680px;
}

/* ---------- 9. 徽章 / 提示框 ---------- */
.badge {
    border-radius: 999px;
    font-weight: 600;
    padding: .38em .72em;
    letter-spacing: .01em;
}

/* 深色底白色文字对比度不足时改为深色文字 */
.badge.bg-warning {
    color: #422006;
}

.badge.bg-info {
    color: #0c4a6e;
}

.badge.bg-light {
    color: #334155;
}

.badge.bg-primary {
    background-color: var(--app-brand) !important;
}

.alert {
    border-width: 1px;
    border-radius: var(--app-radius-sm);
    box-shadow: var(--app-shadow-sm);
}

.alert-info {
    background: rgba(14, 165, 233, .08);
    border-color: rgba(14, 165, 233, .2);
    color: #075985;
}

.alert-success {
    background: rgba(16, 185, 129, .09);
    border-color: rgba(16, 185, 129, .22);
    color: #065f46;
}

.alert-warning {
    background: rgba(245, 158, 11, .1);
    border-color: rgba(245, 158, 11, .24);
    color: #92400e;
}

.alert-danger {
    background: rgba(239, 68, 68, .09);
    border-color: rgba(239, 68, 68, .22);
    color: #991b1b;
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius-sm);
    box-shadow: var(--app-shadow-sm);
    padding: .6rem .9rem;
    margin-bottom: 1rem;
}

.breadcrumb a {
    color: var(--app-brand);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--app-brand-deep);
    text-decoration: underline;
}

.breadcrumb-item.active,
.breadcrumb .text-secondary {
    color: var(--app-muted) !important;
}

/* ---------- 11. 弹窗 ---------- */
.modal-content {
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius-lg);
    box-shadow: 0 30px 70px rgba(15, 23, 42, .28);
    overflow: hidden;
}

.modal-header {
    border-bottom: 1px solid var(--app-border);
    background: linear-gradient(180deg, #f8fafc, #ffffff);
    padding: 1rem 1.25rem;
}

.modal-title {
    font-weight: 700;
    color: var(--app-heading);
}

.modal-body {
    padding: 1.25rem;
}

.modal-footer {
    border-top: 1px solid var(--app-border);
    background: #fbfcff;
    padding: .9rem 1.25rem;
}

.modal-backdrop.show {
    opacity: .38;
}

/* ---------- 12. 进度条 ---------- */
.progress {
    background-color: rgba(15, 23, 42, .07);
    border-radius: 999px;
    overflow: hidden;
}

/* 上传中才有斑马纹，完成后 JS 会改写 className，故此处限定选择器，
   避免覆盖 bg-success / bg-danger 的语义色。 */
.progress-bar.progress-bar-striped {
    background-image: linear-gradient(90deg, #4f46e5, #0ea5e9);
    font-size: .72rem;
    font-weight: 600;
}

/* ---------- 13. 页脚 ---------- */
footer.app-footer {
    flex: 0 0 auto;
    margin-top: 3rem;
    padding: 1.1rem 0;
    background: rgba(255, 255, 255, .6);
    border-top: 1px solid var(--app-border) !important;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

footer.app-footer a {
    color: var(--app-muted);
    text-decoration: none;
}

footer.app-footer a:hover {
    color: var(--app-brand);
    text-decoration: underline;
}

/* ---------- 14. 登录页 ---------- */
.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: stretch;
    padding: 2rem 0;
}

.auth-wrap {
    max-width: 420px;
    width: 100%;
}

.auth-card {
    border-radius: var(--app-radius-lg);
    box-shadow: 0 24px 60px rgba(15, 23, 42, .14) !important;
}

.auth-card:hover {
    transform: none;
    box-shadow: 0 24px 60px rgba(15, 23, 42, .14) !important;
}

.auth-card .card-body {
    padding: 2.5rem 2rem;
}

.auth-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .65rem;
    margin-bottom: 1.75rem;
}

.auth-logo {
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    border-radius: 18px;
    font-size: 1.55rem;
    color: #ffffff;
    background: linear-gradient(135deg, #4f46e5, #0ea5e9);
    box-shadow: 0 10px 24px rgba(79, 70, 229, .35);
}

.auth-title {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: .02em;
    color: var(--app-heading);
}

.auth-subtitle {
    margin: 0;
    font-size: .85rem;
    color: var(--app-muted);
}

.auth-card .btn-primary {
    padding: .6rem 1rem;
    font-weight: 600;
    letter-spacing: .04em;
}

/* 登录页版本号：低调但不至于看不见 */
.auth-version {
    margin: 1.15rem 0 0;
    text-align: center;
    font-size: .78rem;
    letter-spacing: .08em;
    color: var(--app-muted);
    font-variant-numeric: tabular-nums;
    user-select: none;
}

/* ---------- 15. 响应式与动效降级 ---------- */
@media (max-width: 575.98px) {
    .app-content h4 {
        font-size: 1.2rem;
    }

    .app-form-card {
        padding: 1.15rem;
    }

    .table-responsive {
        padding: .2rem .35rem;
    }

    .card-body {
        padding: 1.1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .card,
    .btn,
    .module-card::after,
    .navbar.app-navbar .nav-link,
    .form-control,
    .form-select {
        transition: none;
    }

    .card:hover {
        transform: none;
    }
}