/* ============================================================
   思槐聚合登录 · 主题排版层（在 base / components 之后加载）
   - 通过 CSS 变量的差异让"换主题"自动改变排版
   - 在此对每个主题做更深的结构差异化覆盖
   ============================================================ */

/* anime 主题专用字体（圆润可爱）+ X 主题用 Inter */
@import url('https://fonts.googleapis.com/css2?family=Quicksand:wght@400;500;600;700&family=Inter:wght@400;500;600;700;800&display=swap');

/* ---------- 全局：让主题排版变量真正生效 ---------- */
html,
body {
    background: var(--t-page-bg) !important;
    background-attachment: fixed;
    font-family: var(--font-family);
    font-weight: var(--t-body-weight);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: var(--t-heading-weight);
    letter-spacing: var(--t-heading-tracking);
}

.btn {
    font-weight: var(--t-button-weight);
    letter-spacing: var(--t-button-tracking);
    border-radius: var(--t-radius-button);
    padding: var(--t-button-padding-y) var(--t-button-padding-x);
    text-transform: var(--t-button-text-transform);
    transition: all var(--transition-normal);
}

.btn-lg {
    padding: calc(var(--t-button-padding-y) + 0.25rem) calc(var(--t-button-padding-x) + 0.5rem);
    font-size: 1rem;
}

.btn-sm {
    padding: calc(var(--t-button-padding-y) - 0.25rem) calc(var(--t-button-padding-x) - 0.5rem);
    font-size: 0.8125rem;
}

.card {
    border-radius: var(--t-radius-card);
    box-shadow: var(--t-card-shadow);
    border: var(--t-card-border);
    background: var(--bg-card);
}

.form-control {
    border-radius: var(--t-radius-input);
}

.container {
    max-width: var(--t-container-max);
}

/* 顶部导航统一变量化 */
.site-nav {
    background: var(--t-nav-bg);
    border-bottom: var(--t-nav-border);
    height: var(--t-nav-height);
    backdrop-filter: var(--t-nav-blur);
    -webkit-backdrop-filter: var(--t-nav-blur);
}

.site-nav__inner {
    height: var(--t-nav-height);
}

/* ============================================================
   anime · 二次元 / 治愈风（参考图：clean + chibi mascot）
   ============================================================ */
[data-theme="anime"] body {
    background: var(--t-page-bg);
    color: var(--text-main);
    position: relative;
    overflow-x: hidden;
}

/* 极简几何线条背景（散落的三角形 + 短线 + 小圆），不动 */
[data-theme="anime"] body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image: url('/assets/decorations/anime-bg.svg');
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    opacity: 0.9;
}

/* 极淡的边缘光晕，给画面一点冷调氛围 */
[data-theme="anime"] body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(ellipse 60% 50% at 0% 0%, rgba(186, 214, 255, 0.35) 0, transparent 60%),
        radial-gradient(ellipse 60% 50% at 100% 100%, rgba(199, 210, 254, 0.30) 0, transparent 60%);
}

[data-theme="anime"] main,
[data-theme="anime"] .site-nav,
[data-theme="anime"] footer {
    position: relative;
    z-index: 1;
}

/* 标题保持干净深色，不要渐变文字（参考图风格） */
[data-theme="anime"] h1,
[data-theme="anime"] h2,
[data-theme="anime"] h3,
[data-theme="anime"] h4 {
    color: var(--text-main);
    -webkit-text-fill-color: var(--text-main);
    background: none;
}

[data-theme="anime"] .btn-primary {
    background: linear-gradient(135deg, #6e8eff 0%, #4f7cff 100%);
    border: none;
    color: #fff !important;
    box-shadow: 0 8px 20px -6px rgba(79, 124, 255, 0.45);
}

[data-theme="anime"] .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 26px -8px rgba(79, 124, 255, 0.55);
}

[data-theme="anime"] .btn-outline {
    background: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

[data-theme="anime"] .btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: #f7f9ff;
    transform: translateY(-1px);
}

[data-theme="anime"] .card {
    background: #ffffff;
    border: 1px solid var(--border-light);
}

[data-theme="anime"] .form-control {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
}

[data-theme="anime"] .form-control:focus {
    background: #ffffff;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(79, 124, 255, 0.10);
}

[data-theme="anime"] .badge,
[data-theme="anime"] .pill {
    border-radius: 9999px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 0.25rem 0.75rem;
    font-weight: 600;
}

/* ============================================================
   x · X / Twitter 风
   ============================================================ */
[data-theme="x"] body {
    background: #000;
    color: var(--text-main);
    font-feature-settings: "ss01", "cv11";
}

/* 让 X 风下的标题字号紧凑、字重大 */
[data-theme="x"] h1 { font-size: 1.875rem; line-height: 1.15; }
[data-theme="x"] h2 { font-size: 1.5rem; line-height: 1.2; }
[data-theme="x"] h3 { font-size: 1.25rem; line-height: 1.25; }

[data-theme="x"] p,
[data-theme="x"] li,
[data-theme="x"] span,
[data-theme="x"] a {
    font-size: 0.9375rem;
}

[data-theme="x"] .text-muted {
    color: #71767b !important;
}

[data-theme="x"] .btn {
    font-weight: 700;
    letter-spacing: -0.01em;
}

[data-theme="x"] .btn-primary {
    background: #1d9bf0;
    color: #fff !important;
    border: 1px solid transparent;
    box-shadow: none;
}

[data-theme="x"] .btn-primary:hover {
    background: #1a8cd8;
    transform: none;
    box-shadow: none;
}

[data-theme="x"] .btn-outline,
[data-theme="x"] .btn-secondary,
[data-theme="x"] .btn-ghost {
    background: transparent;
    color: var(--text-main);
    border: 1px solid #536471;
}

[data-theme="x"] .btn-outline:hover,
[data-theme="x"] .btn-secondary:hover,
[data-theme="x"] .btn-ghost:hover {
    background: rgba(239, 243, 244, 0.10);
    color: var(--text-main);
    border-color: #536471;
    transform: none;
}

[data-theme="x"] .card {
    background: #000;
    border: 1px solid #2f3336;
    box-shadow: none;
    border-radius: var(--t-radius-card);
}

[data-theme="x"] .card:hover {
    box-shadow: none;
    background: #08090a;
}

[data-theme="x"] .form-control {
    background: #16181c;
    border: 1px solid #2f3336;
    color: var(--text-main);
}

[data-theme="x"] .form-control::placeholder {
    color: #71767b;
}

[data-theme="x"] .form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary);
    background: #000;
}

[data-theme="x"] .badge {
    background: rgba(29, 155, 240, 0.18);
    color: #1d9bf0;
    border-radius: 9999px;
    padding: 0.125rem 0.5rem;
    font-weight: 700;
    font-size: 0.75rem;
}

[data-theme="x"] .alert {
    border-radius: 0.75rem;
    border: 1px solid #2f3336;
    background: #16181c;
    color: var(--text-main);
}

[data-theme="x"] .site-nav {
    backdrop-filter: var(--t-nav-blur);
    -webkit-backdrop-filter: var(--t-nav-blur);
}

[data-theme="x"] hr,
[data-theme="x"] .divider::before,
[data-theme="x"] .divider::after {
    background: #2f3336;
    border-color: #2f3336;
}

/* X 风下让"分块"使用细线分割（去阴影、去圆角差） */
[data-theme="x"] .feature-card,
[data-theme="x"] .stat-card,
[data-theme="x"] .code-card,
[data-theme="x"] .provider-icon {
    background: transparent;
    border: 1px solid #2f3336;
    box-shadow: none;
}

[data-theme="x"] .feature-card:hover {
    background: #08090a;
    transform: none;
    box-shadow: none;
}

/* X 风格：footer 也要黑 */
[data-theme="x"] footer {
    background: #000 !important;
    border-top: 1px solid #2f3336 !important;
}

/* ============================================================
   主题选择器（前台右下角悬浮按钮，预览用）
   ============================================================ */
.theme-switcher {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-end;
}

.theme-switcher__toggle {
    width: 48px;
    height: 48px;
    border-radius: 9999px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    cursor: pointer;
    box-shadow: 0 8px 24px -6px rgba(0, 0, 0, 0.25);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
}

.theme-switcher__toggle:hover {
    transform: scale(1.05);
}

.theme-switcher__panel {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 0.875rem;
    padding: 0.75rem;
    min-width: 220px;
    box-shadow: 0 18px 40px -12px rgba(0, 0, 0, 0.18);
    display: none;
}

.theme-switcher.is-open .theme-switcher__panel {
    display: block;
}

.theme-switcher__title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    padding: 0 0.25rem;
}

.theme-switcher__option {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    width: 100%;
    padding: 0.5rem 0.625rem;
    border: 1px solid transparent;
    border-radius: 0.625rem;
    background: transparent;
    color: var(--text-main);
    cursor: pointer;
    font-size: 0.875rem;
    text-align: left;
    transition: all 0.18s ease;
}

.theme-switcher__option:hover {
    background: var(--bg-surface-hover);
}

.theme-switcher__option.is-active {
    border-color: var(--color-primary);
    background: rgba(var(--primary-rgb), 0.08);
    color: var(--color-primary);
}

.theme-switcher__swatch {
    width: 18px;
    height: 18px;
    border-radius: 9999px;
    flex-shrink: 0;
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: var(--swatch, var(--color-primary));
}

.theme-switcher__hint {
    font-size: 0.6875rem;
    color: var(--text-light);
    margin-top: 0.5rem;
    padding: 0 0.25rem;
}

@media (max-width: 640px) {
    .theme-switcher {
        right: 12px;
        bottom: 12px;
    }
    .theme-switcher__panel {
        min-width: 200px;
    }
}

/* ============================================================
   首页 / 落地页 · 主题特定调整
   ============================================================ */

/* anime —— 首页保持简洁干净，标题黑色不渐变 */
[data-theme="anime"] .hero-section {
    background: transparent;
}

[data-theme="anime"] .hero-badge {
    background: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(79, 124, 255, 0.08);
}

[data-theme="anime"] .hero-title,
[data-theme="anime"] .hero-title .gradient-text {
    background: none;
    -webkit-text-fill-color: var(--text-main);
    color: var(--text-main);
}

[data-theme="anime"] .hero-title .gradient-text {
    color: var(--color-primary);
    -webkit-text-fill-color: var(--color-primary);
}

[data-theme="anime"] .feature-card,
[data-theme="anime"] .code-card,
[data-theme="anime"] .stat-card {
    border-radius: 1.25rem;
    background: #ffffff;
    border: 1px solid var(--border-light);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 12px 24px -12px rgba(79, 124, 255, 0.15);
}

[data-theme="anime"] .feature-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 18px 36px -12px rgba(79, 124, 255, 0.25);
}

[data-theme="anime"] .feature-icon {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 0.875rem;
}

[data-theme="anime"] .provider-icon {
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: 0.875rem;
}

[data-theme="anime"] .provider-icon:hover {
    background: #ffffff;
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 16px -8px rgba(79, 124, 255, 0.30);
}

/* X —— 把首页改成"信息流 + 列状板块"的紧凑风 */
[data-theme="x"] .hero-section {
    background: #000;
    min-height: auto;
    padding: 3rem 1rem 2.5rem;
    border-bottom: 1px solid #2f3336;
}

[data-theme="x"] .hero-grid-bg,
[data-theme="x"] .hero-glow {
    display: none;
}

[data-theme="x"] .hero-content {
    text-align: left;
    max-width: 600px;
    margin: 0 auto;
}

[data-theme="x"] .hero-badge {
    background: rgba(29, 155, 240, 0.12);
    border: 1px solid rgba(29, 155, 240, 0.40);
    color: #1d9bf0;
    border-radius: 9999px;
    margin-bottom: 1rem;
    font-weight: 700;
}

[data-theme="x"] .hero-title {
    -webkit-text-fill-color: var(--text-main);
    background: none;
    color: var(--text-main);
    font-size: clamp(2rem, 5vw, 2.75rem) !important;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    margin-left: 0;
}

[data-theme="x"] .hero-title .gradient-text {
    background: none;
    -webkit-text-fill-color: #1d9bf0;
    color: #1d9bf0;
}

[data-theme="x"] .hero-description {
    color: var(--text-muted);
    font-size: 1rem;
    margin: 0 0 1.5rem;
    max-width: 560px;
}

[data-theme="x"] .hero-buttons {
    justify-content: flex-start;
    gap: 0.5rem;
}

[data-theme="x"] .hero-buttons .btn-primary,
[data-theme="x"] .hero-buttons .btn-outline {
    padding: 0.625rem 1.5rem !important;
    font-size: 0.9375rem !important;
    font-weight: 700 !important;
    border-radius: 9999px !important;
}

[data-theme="x"] .hero-stats {
    justify-content: flex-start;
    color: var(--text-muted);
}

[data-theme="x"] .hero-stats .stat-divider {
    background: #2f3336;
}

[data-theme="x"] .providers-section,
[data-theme="x"] .features-section,
[data-theme="x"] .code-section,
[data-theme="x"] .stats-section,
[data-theme="x"] .cta-section {
    background: #000;
    padding: 2rem 1rem;
    border-bottom: 1px solid #2f3336;
}

[data-theme="x"] .providers-title {
    color: var(--text-muted);
    text-align: left;
    max-width: 600px;
    margin: 0 auto 1rem;
}

[data-theme="x"] .providers-grid {
    justify-content: flex-start;
    gap: 0.75rem;
    max-width: 600px;
    margin: 0 auto;
}

[data-theme="x"] .section-header {
    text-align: left;
    max-width: 600px;
    margin: 0 auto 1.5rem;
}

[data-theme="x"] .section-title {
    color: var(--text-main);
    font-size: 1.5rem !important;
    font-weight: 800;
    margin-bottom: 0.25rem;
}

[data-theme="x"] .section-description {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

[data-theme="x"] .features-grid {
    grid-template-columns: 1fr !important;
    gap: 0;
    max-width: 600px;
    margin: 0 auto;
    border: 1px solid #2f3336;
    border-radius: 1rem;
    overflow: hidden;
}

[data-theme="x"] .feature-card {
    border: 0;
    border-bottom: 1px solid #2f3336;
    border-radius: 0;
    padding: 1rem 1.25rem;
    background: transparent;
}

[data-theme="x"] .feature-card:last-child {
    border-bottom: 0;
}

[data-theme="x"] .feature-card:hover {
    background: #08090a;
    transform: none;
    border-color: #2f3336;
}

[data-theme="x"] .feature-icon {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 9999px;
    background: rgba(29, 155, 240, 0.12);
    color: #1d9bf0;
    margin-bottom: 0.5rem;
}

[data-theme="x"] .feature-icon .iconify { font-size: 1.125rem; }

[data-theme="x"] .feature-title {
    color: var(--text-main);
    font-size: 1rem;
    font-weight: 800;
}

[data-theme="x"] .feature-description {
    color: var(--text-muted);
    font-size: 0.875rem;
}

[data-theme="x"] .stats-grid {
    grid-template-columns: repeat(4, 1fr) !important;
    max-width: 600px;
    margin: 0 auto;
    border: 1px solid #2f3336;
    border-radius: 1rem;
    padding: 0.5rem 0;
    gap: 0;
}

[data-theme="x"] .stat-card {
    background: transparent;
    border: 0;
    padding: 0.75rem 0.5rem;
    text-align: center;
}

[data-theme="x"] .stat-value {
    color: var(--text-main);
    font-size: 1.25rem !important;
    font-weight: 800;
}

[data-theme="x"] .stat-label {
    color: var(--text-muted);
    font-size: 0.75rem;
}

[data-theme="x"] .code-card {
    max-width: 600px;
    margin: 0 auto;
    background: #000;
    border: 1px solid #2f3336;
    border-radius: 1rem;
}

[data-theme="x"] .code-card-header {
    background: #16181c;
    border-bottom: 1px solid #2f3336;
}

[data-theme="x"] .cta-section {
    text-align: left;
}

[data-theme="x"] .cta-section .section-header,
[data-theme="x"] .cta-section .cta-buttons {
    text-align: left;
    justify-content: flex-start;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

[data-theme="x"] .cta-section .section-title,
[data-theme="x"] .cta-section .section-description {
    text-align: left;
}

[data-theme="x"] footer .container > div:first-child {
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
}

[data-theme="x"] footer h4 {
    color: var(--text-main);
}

/* ============================================================
   通用：login 页 / register 页通用排版（让其在不同主题下都好看）
   ============================================================ */
.auth-page {
    min-height: calc(100vh - 64px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    background: var(--t-page-bg);
    background-attachment: fixed;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--bg-card);
    border-radius: var(--t-radius-card);
    box-shadow: var(--t-card-shadow);
    border: var(--t-card-border);
    padding: var(--t-card-padding);
}

.auth-card__header {
    text-align: center;
    margin-bottom: 1.75rem;
}

.auth-card__logo {
    width: 64px;
    height: 64px;
    border-radius: var(--t-radius-card);
    background: var(--primary-gradient);
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 24px -10px rgba(var(--primary-rgb), 0.45);
    overflow: hidden;
}

.auth-card__logo img {
    width: 56%;
    height: 56%;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.auth-card__title {
    font-size: 1.5rem;
    font-weight: var(--t-heading-weight);
    color: var(--text-main);
    margin-bottom: 0.375rem;
    letter-spacing: var(--t-heading-tracking);
}

.auth-card__subtitle {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin: 0;
}

.auth-form .form-group { margin-bottom: 1rem; }

.auth-form .input-with-icon {
    position: relative;
}

.auth-form .input-with-icon .iconify {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 1.125rem;
}

.auth-form .input-with-icon .form-control {
    padding-left: 2.75rem;
    height: 44px;
}

.auth-form .password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 6px;
}

.auth-form .password-toggle:hover {
    color: var(--color-primary);
    background: rgba(var(--primary-rgb), 0.08);
}

.auth-form .btn-primary {
    width: 100%;
    height: 46px;
    font-weight: var(--t-button-weight);
    background: var(--primary-gradient);
    border: none;
    color: #fff !important;
    box-shadow: 0 8px 20px -8px rgba(var(--primary-rgb), 0.55);
}

.auth-divider {
    margin: 1.5rem 0 1rem;
    text-align: center;
    position: relative;
    color: var(--text-light);
    font-size: 0.75rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: calc(50% - 60px);
    height: 1px;
    background: var(--border-color);
}

.auth-divider::before { left: 0; }
.auth-divider::after { right: 0; }

.auth-social {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.625rem;
    margin-top: 0.75rem;
}

.auth-social__btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all .2s ease;
}

.auth-social__btn:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 18px -8px rgba(var(--primary-rgb), 0.45);
}

.auth-social__btn img { width: 26px; height: 26px; object-fit: contain; }

.auth-footer-link {
    margin-top: 1.25rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.auth-footer-link a {
    color: var(--color-primary);
    font-weight: 600;
}

/* ============================================================
   anime —— 登录/注册卡：参考图风格（白卡 + 内置 chibi 吉祥物）
   ============================================================ */
[data-theme="anime"] .auth-page {
    padding: 3rem 1rem;
    position: relative;
    z-index: 1;
}

[data-theme="anime"] .auth-card {
    position: relative;
    max-width: 460px;
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: 24px;
    padding: 2.5rem 2rem 2rem;
    box-shadow:
        0 1px 2px rgba(15, 23, 42, 0.04),
        0 24px 48px -16px rgba(79, 124, 255, 0.18);
}

/* anime 主题：让站点 logo 化身浮在卡片顶部的圆形大头像 */
[data-theme="anime"] .auth-card {
    overflow: visible;          /* 允许 logo 浮出卡片边界 */
}

[data-theme="anime"] .auth-card__header {
    position: relative;
    text-align: center;
    margin-bottom: 1.5rem;
    padding-top: 76px;          /* 给浮出的 logo 腾空间 */
}

[data-theme="anime"] .auth-card__logo {
    display: flex !important;
    position: absolute;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 100px;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    margin: 0;
    overflow: visible;
    align-items: center;
    justify-content: center;
    animation: animeMascotBob 4s ease-in-out infinite;
}

[data-theme="anime"] .auth-card__logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 10px 18px rgba(79, 124, 255, 0.32));
}

[data-theme="anime"] .auth-card__logo .iconify {
    color: var(--color-primary) !important;
    font-size: 80px !important;
    filter: drop-shadow(0 10px 18px rgba(79, 124, 255, 0.32)) !important;
}

@keyframes animeMascotBob {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%      { transform: translateX(-50%) translateY(-6px); }
}

/* 干净的深色标题（参考图：黑色加粗，不渐变） */
[data-theme="anime"] .auth-card__title {
    font-family: "Quicksand", "PingFang SC", sans-serif;
    color: #1f2937;
    -webkit-text-fill-color: #1f2937;
    background: none;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    margin-bottom: 0.5rem;
}

[data-theme="anime"] .auth-card__subtitle {
    color: #6b7280;
    font-size: 0.875rem;
    font-weight: 500;
}

/* 表单字段：浅灰底、12px 圆角、聚焦蓝边 */
[data-theme="anime"] .auth-form .form-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
}

[data-theme="anime"] .auth-form .form-control {
    height: 46px;
    background: #f7f9fd;
    border: 1px solid #e5e9f2;
    border-radius: 12px;
    font-size: 0.9375rem;
    color: #1f2937;
    transition: all .2s ease;
}

[data-theme="anime"] .auth-form .form-control::placeholder {
    color: #9ca3af;
}

[data-theme="anime"] .auth-form .form-control:focus {
    background: #ffffff;
    border-color: #4f7cff;
    box-shadow: 0 0 0 4px rgba(79, 124, 255, 0.10);
}

[data-theme="anime"] .auth-form .input-with-icon .form-control {
    padding-left: 2.875rem;
}

[data-theme="anime"] .auth-form .input-with-icon .iconify {
    color: #94a3b8;
    font-size: 1.125rem;
}

/* 主按钮：胶囊形、纯蓝渐变 */
[data-theme="anime"] .auth-form .btn-primary {
    height: 48px;
    border-radius: 9999px;
    background: linear-gradient(135deg, #6e8eff 0%, #4f7cff 100%);
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: 0.02em;
    box-shadow:
        0 8px 18px -6px rgba(79, 124, 255, 0.50),
        inset 0 1px 0 rgba(255, 255, 255, 0.25);
    transition: all .25s ease;
}

[data-theme="anime"] .auth-form .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow:
        0 12px 22px -6px rgba(79, 124, 255, 0.60),
        inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

[data-theme="anime"] .auth-divider {
    color: #9ca3af;
    font-weight: 500;
    font-size: 0.75rem;
}

[data-theme="anime"] .auth-divider::before,
[data-theme="anime"] .auth-divider::after {
    background: var(--border-color);
    height: 1px;
}

[data-theme="anime"] .auth-divider span {
    background: #ffffff !important;
    color: #9ca3af !important;
}

/* 第三方按钮：白底大圆 */
[data-theme="anime"] .auth-social__btn {
    width: 46px;
    height: 46px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

[data-theme="anime"] .auth-social__btn:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: 0 8px 16px -6px rgba(79, 124, 255, 0.40);
}

[data-theme="anime"] .auth-footer-link {
    color: #6b7280;
    font-size: 0.875rem;
}

[data-theme="anime"] .auth-footer-link a {
    background: none;
    -webkit-text-fill-color: var(--color-primary);
    color: var(--color-primary);
    font-weight: 600;
}

/* ============================================================
   x —— 登录/注册卡：真正的 X / Twitter 风
   ============================================================ */
[data-theme="x"] .auth-page {
    background: #000;
    padding: 3rem 1rem;
    min-height: 100vh;
    align-items: flex-start;
    padding-top: 4rem;
}

[data-theme="x"] .auth-card {
    background: #000;
    border: none;
    box-shadow: none;
    padding: 0;
    border-radius: 0;
    max-width: 380px;
}

[data-theme="x"] .auth-card__header {
    text-align: left;
    margin-bottom: 1.75rem;
    padding-top: 0;
}

/* x 主题：直接展示站点 logo，无任何容器装饰 */
[data-theme="x"] .auth-card__logo {
    width: 40px;
    height: 40px;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    margin: 0 0 1.5rem 0 !important;
    display: flex !important;
    align-items: center;
    justify-content: center;
    overflow: visible;
}

[data-theme="x"] .auth-card__logo img {
    display: block !important;
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: none;
}

[data-theme="x"] .auth-card__logo .iconify {
    color: #e7e9ea !important;
    font-size: 32px !important;
    filter: none !important;
}

[data-theme="x"] .auth-card__title {
    font-family: "Inter", "Chirp", system-ui, sans-serif;
    color: #e7e9ea;
    -webkit-text-fill-color: #e7e9ea;
    background: none;
    font-size: 1.875rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    text-align: left;
    margin: 0 0 0.375rem;
}

[data-theme="x"] .auth-card__subtitle {
    color: #71767b;
    font-size: 0.9375rem;
    text-align: left;
    margin: 0;
}

/* 字段：黑底深灰边、聚焦发蓝 */
[data-theme="x"] .auth-form .form-label {
    color: #71767b;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.375rem;
}

[data-theme="x"] .auth-form .form-control {
    height: 56px;
    background: transparent;
    border: 1px solid #2f3336;
    border-radius: 4px;
    color: #e7e9ea;
    font-size: 1rem;
    padding: 0 0.875rem;
}

[data-theme="x"] .auth-form .form-control::placeholder {
    color: #71767b;
}

[data-theme="x"] .auth-form .form-control:focus {
    border-color: #1d9bf0;
    box-shadow: 0 0 0 1px #1d9bf0;
    background: transparent;
}

[data-theme="x"] .auth-form .input-with-icon .form-control {
    padding-left: 2.875rem;
}

[data-theme="x"] .auth-form .input-with-icon .iconify {
    color: #71767b;
}

/* X 主按钮：白底黑字 pill（X 实际官方风格） */
[data-theme="x"] .auth-form .btn-primary {
    background: #eff3f4;
    color: #0f1419 !important;
    height: 52px;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: none;
    border: none;
    margin-top: 0.5rem;
}

[data-theme="x"] .auth-form .btn-primary:hover {
    background: #d7dbdc;
    transform: none;
}

[data-theme="x"] .auth-form .btn-normal {
    color: #0f1419;
}

[data-theme="x"] .auth-divider {
    color: #71767b;
    margin: 1.25rem 0 0.75rem;
}

[data-theme="x"] .auth-divider::before,
[data-theme="x"] .auth-divider::after {
    background: #2f3336;
}

[data-theme="x"] .auth-divider span {
    background: #000 !important;
    color: #71767b !important;
}

[data-theme="x"] .auth-social {
    justify-content: flex-start;
}

/* X 风社交按钮：白底黑字（与 X 官方做法一致），保证品牌色 SVG 都看得见 */
[data-theme="x"] .auth-social__btn {
    width: 44px;
    height: 44px;
    background: #ffffff;
    border: 1px solid #2f3336;
    border-radius: 9999px;
}

[data-theme="x"] .auth-social__btn:hover {
    background: #e7e9ea;
    border-color: #4b5358;
    box-shadow: none;
    transform: none;
}

[data-theme="x"] .auth-footer-link {
    text-align: left;
    color: #71767b;
}

[data-theme="x"] .auth-footer-link a {
    color: #1d9bf0;
    -webkit-text-fill-color: #1d9bf0;
    background: none;
}

/* ============================================================
   深色主题：品牌 SVG 在深色背景下的可视性修复
   - 部分 SVG（github / qq / douyin 等）以纯黑或深色填充
     若按钮底色也是深色就会"消失"
   - 统一在深色主题下使用浅色按钮，保留品牌原色
   ============================================================ */
[data-theme="dark"] .auth-social__btn {
    background: #f1f5f9;
    border: 1px solid #475569;
}

[data-theme="dark"] .auth-social__btn:hover {
    background: #ffffff;
    border-color: var(--color-primary);
    box-shadow: 0 8px 18px -8px rgba(129, 140, 248, 0.45);
}

/* 同样的问题也会出现在首页 .provider-icon 上 */
[data-theme="dark"] .provider-icon,
[data-theme="x"] .provider-icon {
    background: #ffffff;
    border-color: rgba(255, 255, 255, 0.10);
}

[data-theme="dark"] .provider-icon:hover,
[data-theme="x"] .provider-icon:hover {
    background: #f1f5f9;
}

/* 注：dark 与 x 主题已通过给社交按钮使用浅色底色兜住所有品牌色 SVG 的可视性，
   不再需要对单个 SVG（如 github.svg / qq.svg）做 invert 滤镜处理 */