/* ============================================================
 * TechFlow Theme - glass-card.css
 * 玻璃磨砂补充样式（侧边栏 widget / 搜索弹层）
 * ============================================================ */

/* ============================================================
 * 1. 侧边栏 Widget
 * ============================================================ */
.tf-side-widget {
    position: relative;
    background: var(--tf-surface, rgba(255, 255, 255, 0.025));
    border: 1px solid var(--tf-border, rgba(255, 255, 255, 0.06));
    border-radius: 20px;
    padding: 24px;
    overflow: hidden;
    transition: border-color 0.3s;
}

[data-tf-mode="light"] .tf-side-widget {
    background: #FFFFFF;
    border-color: rgba(10, 10, 10, 0.08);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.tf-side-widget::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--tf-primary, #00FF94) 30%, var(--tf-accent, #60A5FA) 70%, transparent 100%);
    opacity: 0.5;
    transition: opacity 0.3s;
}

.tf-side-widget:hover::before {
    opacity: 1;
}

.tf-side-widget__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--tf-border, rgba(255, 255, 255, 0.06));
}

[data-tf-mode="light"] .tf-side-widget__head {
    border-bottom-color: rgba(10, 10, 10, 0.06);
}

.tf-side-widget__title {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--tf-text, #FAFAFA);
    margin: 0;
    font-family: 'JetBrains Mono', monospace;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tf-side-widget__title-dot {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--tf-primary, #00FF94);
    box-shadow: 0 0 8px var(--tf-primary, #00FF94);
    animation: tf-pulse 2s ease-in-out infinite;
}

@keyframes tf-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.85); }
}

.tf-side-widget__count {
    font-size: 0.6875rem;
    color: var(--tf-text-muted, #71717A);
    font-family: 'JetBrains Mono', monospace;
    background: var(--tf-surface, rgba(255, 255, 255, 0.04));
    padding: 3px 8px;
    border-radius: 999px;
}

[data-tf-mode="light"] .tf-side-widget__count {
    background: rgba(10, 10, 10, 0.05);
}

/* Widget 内容列表 */
.tf-side-list {
    display: flex;
    flex-direction: column;
}

.tf-side-list__item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--tf-border, rgba(255, 255, 255, 0.04));
    transition: padding 0.2s;
    text-decoration: none;
    color: inherit;
}

[data-tf-mode="light"] .tf-side-list__item {
    border-bottom-color: rgba(10, 10, 10, 0.04);
}

.tf-side-list__item:last-child {
    border-bottom: none;
}

.tf-side-list__item:hover {
    padding-left: 4px;
}

.tf-side-list__item:hover .tf-side-list__title {
    color: var(--tf-primary, #00FF94);
}

[data-tf-mode="light"] .tf-side-list__item:hover .tf-side-list__title {
    color: #00875A;
}

.tf-side-list__num {
    flex: 0 0 22px;
    height: 22px;
    border-radius: 6px;
    background: var(--tf-surface, rgba(255, 255, 255, 0.04));
    color: var(--tf-text-muted, #71717A);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6875rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

[data-tf-mode="light"] .tf-side-list__num {
    background: rgba(10, 10, 10, 0.05);
}

.tf-side-list__item--top .tf-side-list__num {
    background: linear-gradient(135deg, var(--tf-primary, #00FF94), var(--tf-accent, #60A5FA));
    color: #000;
}

.tf-side-list__body {
    flex: 1;
    min-width: 0;
}

.tf-side-list__title {
    font-size: 0.875rem;
    line-height: 1.4;
    font-weight: 500;
    color: var(--tf-text, #FAFAFA);
    margin: 0 0 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s;
    letter-spacing: -0.01em;
}

.tf-side-list__meta {
    font-size: 0.6875rem;
    color: var(--tf-text-muted, #71717A);
    font-family: 'JetBrains Mono', monospace;
    display: flex;
    align-items: center;
    gap: 6px;
}

.tf-side-list__meta-dot {
    width: 3px;
    height: 3px;
    border-radius: 999px;
    background: var(--tf-text-muted, #71717A);
}

/* 站点简介 widget */
.tf-side-intro__text {
    font-size: 0.875rem;
    line-height: 1.65;
    color: var(--tf-text-muted, #A1A1AA);
    margin: 0 0 20px;
    letter-spacing: -0.005em;
}

.tf-side-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.tf-side-stat {
    background: var(--tf-surface-2, rgba(255, 255, 255, 0.03));
    border: 1px solid var(--tf-border, rgba(255, 255, 255, 0.04));
    border-radius: 12px;
    padding: 14px 12px;
    text-align: center;
    transition: all 0.2s;
}

[data-tf-mode="light"] .tf-side-stat {
    background: rgba(10, 10, 10, 0.02);
    border-color: rgba(10, 10, 10, 0.04);
}

.tf-side-stat:hover {
    border-color: var(--tf-primary, #00FF94);
    transform: translateY(-2px);
}

.tf-side-stat__num {
    font-family: 'Instrument Serif', serif;
    font-size: 1.5rem;
    line-height: 1;
    letter-spacing: -0.03em;
    color: var(--tf-text, #FAFAFA);
    margin-bottom: 4px;
    display: block;
}

.tf-side-stat__num em {
    font-style: italic;
    color: var(--tf-primary, #00FF94);
}

.tf-side-stat__label {
    font-size: 0.625rem;
    color: var(--tf-text-muted, #71717A);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-family: 'JetBrains Mono', monospace;
}

/* 标签云 */
.tf-side-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tf-side-tag {
    display: inline-flex;
    align-items: center;
    padding: 5px 10px;
    background: var(--tf-surface, rgba(255, 255, 255, 0.04));
    border: 1px solid var(--tf-border, rgba(255, 255, 255, 0.06));
    border-radius: 6px;
    color: var(--tf-text-muted, #A1A1AA);
    font-size: 0.75rem;
    font-family: 'JetBrains Mono', monospace;
    text-decoration: none;
    transition: all 0.2s;
}

[data-tf-mode="light"] .tf-side-tag {
    background: rgba(10, 10, 10, 0.03);
    border-color: rgba(10, 10, 10, 0.06);
}

.tf-side-tag:hover {
    color: var(--tf-text, #FAFAFA);
    background: var(--tf-surface-hover, rgba(255, 255, 255, 0.08));
    border-color: var(--tf-border-hover, rgba(255, 255, 255, 0.12));
}

[data-tf-mode="light"] .tf-side-tag:hover {
    color: var(--tf-text, #0A0A0A);
    background: rgba(10, 10, 10, 0.06);
}

/* 归档列表 */
.tf-side-archive {
    display: flex;
    flex-direction: column;
}

.tf-side-archive__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--tf-border, rgba(255, 255, 255, 0.04));
    text-decoration: none;
    color: var(--tf-text, #FAFAFA);
    transition: all 0.2s;
    font-size: 0.875rem;
}

[data-tf-mode="light"] .tf-side-archive__item {
    border-bottom-color: rgba(10, 10, 10, 0.04);
}

.tf-side-archive__item:last-child {
    border-bottom: none;
}

.tf-side-archive__item:hover {
    padding-left: 6px;
    color: var(--tf-primary, #00FF94);
}

[data-tf-mode="light"] .tf-side-archive__item:hover {
    color: #00875A;
}

.tf-side-archive__label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
}

.tf-side-archive__count {
    background: var(--tf-surface, rgba(255, 255, 255, 0.04));
    color: var(--tf-text-muted, #71717A);
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.6875rem;
    font-family: 'JetBrains Mono', monospace;
}

[data-tf-mode="light"] .tf-side-archive__count {
    background: rgba(10, 10, 10, 0.05);
}

.tf-side-archive__item:hover .tf-side-archive__count {
    color: var(--tf-primary, #00FF94);
    background: rgba(0, 255, 148, 0.08);
}

/* ============================================================
 * 2. 搜索弹层（Command Palette）
 * ============================================================ */
.tf-search-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, 0.7);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 12vh 24px 24px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.tf-search-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

[data-tf-mode="light"] .tf-search-overlay {
    background: rgba(250, 248, 245, 0.7);
}

.tf-search-panel {
    width: 100%;
    max-width: 640px;
    background: var(--tf-bg-elev, #0A0A0A);
    border: 1px solid var(--tf-border, rgba(255, 255, 255, 0.1));
    border-radius: 16px;
    overflow: hidden;
    transform: scale(0.96) translateY(-8px);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.5);
}

[data-tf-mode="light"] .tf-search-panel {
    background: #FFFFFF;
    border-color: rgba(10, 10, 10, 0.1);
    box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.15);
}

.tf-search-overlay.is-open .tf-search-panel {
    transform: scale(1) translateY(0);
}

.tf-search-form {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--tf-border, rgba(255, 255, 255, 0.06));
}

[data-tf-mode="light"] .tf-search-form {
    border-bottom-color: rgba(10, 10, 10, 0.06);
}

.tf-search-icon {
    flex: 0 0 20px;
    color: var(--tf-text-muted, #71717A);
}

.tf-search-icon svg {
    width: 20px;
    height: 20px;
}

.tf-search-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--tf-text, #FAFAFA);
    font-size: 1rem;
    font-family: inherit;
    letter-spacing: -0.01em;
}

.tf-search-input::placeholder {
    color: var(--tf-text-muted, #71717A);
}

.tf-search-esc {
    flex: 0 0 auto;
    padding: 3px 8px;
    background: var(--tf-surface, rgba(255, 255, 255, 0.04));
    border: 1px solid var(--tf-border, rgba(255, 255, 255, 0.08));
    border-radius: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6875rem;
    color: var(--tf-text-muted, #A1A1AA);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

[data-tf-mode="light"] .tf-search-esc {
    background: rgba(10, 10, 10, 0.04);
    border-color: rgba(10, 10, 10, 0.08);
}

.tf-search-empty {
    padding: 40px 24px;
    text-align: center;
    color: var(--tf-text-muted, #71717A);
    font-size: 0.875rem;
}

.tf-search-empty__icon {
    font-size: 1.75rem;
    margin-bottom: 8px;
    opacity: 0.5;
}

/* ============================================================
 * 3. 主题切换按钮
 * ============================================================ */
.tf-theme-toggle {
    position: relative;
}

.tf-theme-toggle__sun,
.tf-theme-toggle__moon {
    transition: opacity 0.2s, transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-tf-mode="light"] .tf-theme-toggle__sun {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-tf-mode="light"] .tf-theme-toggle__moon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -9px;
    margin-left: -9px;
}

[data-tf-mode="dark"] .tf-theme-toggle__sun,
body:not([data-tf-mode="light"]) .tf-theme-toggle__sun {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -9px;
    margin-left: -9px;
}

body:not([data-tf-mode="light"]) .tf-theme-toggle__moon,
[data-tf-mode="dark"] .tf-theme-toggle__moon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

/* ============================================================
 * 4. 全局背景装饰
 * ============================================================ */
.tf-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.tf-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, var(--tf-grid-line, rgba(255, 255, 255, 0.025)) 1px, transparent 1px),
        linear-gradient(to bottom, var(--tf-grid-line, rgba(255, 255, 255, 0.025)) 1px, transparent 1px);
    background-size: 60px 60px;
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 100%);
    mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 100%);
}

[data-tf-mode="light"] .tf-bg::before {
    background-image:
        linear-gradient(to right, rgba(10, 10, 10, 0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(10, 10, 10, 0.04) 1px, transparent 1px);
}

.tf-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 60vh;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, var(--tf-primary-glow, rgba(0, 255, 148, 0.08)) 0%, transparent 60%);
    pointer-events: none;
}

/* 噪点纹理（SVG 模式） */
.tf-bg-noise {
    position: absolute;
    inset: 0;
    opacity: 0.02;
    pointer-events: none;
    background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' /></filter><rect width='100%25' height='100%25' filter='url(%23n)' /></svg>");
}

[data-tf-mode="light"] .tf-bg-noise {
    opacity: 0.04;
}

/* ============================================================
 * 5. 评论样式
 * ============================================================ */
.tf-comments {
    margin-top: 80px;
    padding-top: 48px;
    border-top: 1px solid var(--tf-border, rgba(255, 255, 255, 0.08));
}

.tf-comments__title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--tf-text, #FAFAFA);
    margin: 0 0 32px;
    font-family: 'JetBrains Mono', monospace;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tf-comments__title-dot {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--tf-primary, #00FF94);
    box-shadow: 0 0 8px var(--tf-primary, #00FF94);
}

.comment-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.comment-body {
    background: var(--tf-surface, rgba(255, 255, 255, 0.025));
    border: 1px solid var(--tf-border, rgba(255, 255, 255, 0.06));
    border-radius: 16px;
    padding: 20px 24px;
}

[data-tf-mode="light"] .comment-body {
    background: #FFFFFF;
    border-color: rgba(10, 10, 10, 0.08);
}

.comment-author {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.comment-author .avatar {
    width: 32px;
    height: 32px;
    border-radius: 999px;
}

.comment-author cite {
    font-style: normal;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--tf-text, #FAFAFA);
}

.comment-author .says {
    display: none;
}

.comment-meta {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--tf-text-muted, #71717A);
    font-family: 'JetBrains Mono', monospace;
}

.comment-content p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--tf-text, #FAFAFA);
    margin: 0;
    letter-spacing: -0.01em;
}

.reply {
    margin-top: 12px;
    font-size: 0.75rem;
    color: var(--tf-primary, #00FF94);
}

.children {
    list-style: none;
    margin: 16px 0 0 24px;
    padding: 0;
}

.comment-respond {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--tf-border, rgba(255, 255, 255, 0.06));
}

.comment-respond .comment-reply-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 20px;
    color: var(--tf-text, #FAFAFA);
    letter-spacing: -0.02em;
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--tf-surface, rgba(255, 255, 255, 0.025));
    border: 1px solid var(--tf-border, rgba(255, 255, 255, 0.06));
    border-radius: 10px;
    color: var(--tf-text, #FAFAFA);
    font-family: inherit;
    font-size: 0.9375rem;
    margin-bottom: 12px;
    transition: border-color 0.2s;
    letter-spacing: -0.01em;
}

[data-tf-mode="light"] .comment-form input[type="text"],
[data-tf-mode="light"] .comment-form input[type="email"],
[data-tf-mode="light"] .comment-form input[type="url"],
[data-tf-mode="light"] .comment-form textarea {
    background: #FFFFFF;
    border-color: rgba(10, 10, 10, 0.1);
    color: var(--tf-text, #0A0A0A);
}

.comment-form input:focus,
.comment-form textarea:focus {
    outline: none;
    border-color: var(--tf-primary, #00FF94);
}

.comment-form textarea {
    min-height: 120px;
    resize: vertical;
}

.comment-form .submit {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: var(--tf-text, #FAFAFA);
    color: var(--tf-bg, #000);
    border: none;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: -0.01em;
}

[data-tf-mode="light"] .comment-form .submit {
    background: var(--tf-text, #0A0A0A);
    color: #fff;
}

.comment-form .submit:hover {
    background: var(--tf-primary, #00FF94);
    color: #000;
}