:root {
    --reading-title-size: 1.875rem;
    --reading-h1-size: 2.125rem;
    --reading-h2-size: 1.75rem;
    --reading-h3-size: 1.5rem;
    --reading-text-size: 16px;
    --reading-inline-code-size: 15px;
    --reading-code-size: 20px;
    --reading-mermaid-scale: 1;
    --reading-line-height: 1.55;
    --reading-list-line-height: 1.45;
    --reading-code-line-height: 1.55;
}

html[data-reading-font-size="small"] {
    --reading-title-size: 1.75rem;
    --reading-h1-size: 2rem;
    --reading-h2-size: 1.625rem;
    --reading-h3-size: 1.375rem;
    --reading-text-size: 15px;
    --reading-inline-code-size: 14px;
    --reading-code-size: 18px;
}

html[data-reading-font-size="large"] {
    --reading-title-size: 2.125rem;
    --reading-h1-size: 2.375rem;
    --reading-h2-size: 2rem;
    --reading-h3-size: 1.625rem;
    --reading-text-size: 18px;
    --reading-inline-code-size: 17px;
    --reading-code-size: 22px;
}

html[data-reading-font-size="xlarge"] {
    --reading-title-size: 2.375rem;
    --reading-h1-size: 2.625rem;
    --reading-h2-size: 2.25rem;
    --reading-h3-size: 1.875rem;
    --reading-text-size: 20px;
    --reading-inline-code-size: 19px;
    --reading-code-size: 24px;
}

body .reading-title {
    font-size: var(--reading-title-size) !important;
    line-height: 1.2 !important;
}

body .reading-content.prose h1 {
    font-size: var(--reading-h1-size) !important;
    line-height: 1.2 !important;
}

body .reading-content.prose h2 {
    font-size: var(--reading-h2-size) !important;
    line-height: 1.22 !important;
}

body .reading-content.prose h3 {
    font-size: var(--reading-h3-size) !important;
    line-height: 1.25 !important;
}

body .reading-content.prose p,
body .reading-content.prose li,
body .reading-content.prose details summary,
body .reading-content.prose blockquote p,
body .reading-content.prose .paragraph,
body .reading-content.prose .callout-content,
body .reading-content.prose .callout-box p,
body .reading-content.prose .blog-table th,
body .reading-content.prose .blog-table td,
body .reading-content.prose table th,
body .reading-content.prose table td {
    font-size: var(--reading-text-size) !important;
    line-height: var(--reading-line-height) !important;
}

body .reading-content.prose li,
body .reading-content.prose details summary {
    line-height: var(--reading-list-line-height) !important;
}

body .reading-content.prose code:not(pre code):not([class*="language-"]),
body .reading-content.prose .notion-inline-code {
    font-size: var(--reading-inline-code-size) !important;
}

body .reading-content.prose .code-block-wrapper pre,
body .reading-content.prose .code-block-wrapper pre[class*="language-"],
body .reading-content.prose .code-block-wrapper pre.line-numbers,
body .reading-content.prose .code-block-wrapper code {
    font-size: var(--reading-code-size) !important;
    line-height: var(--reading-code-line-height) !important;
}

body .reading-content.prose pre.mermaid,
body .reading-content.prose .mermaid {
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
}

body .reading-content.prose pre.mermaid svg,
body .reading-content.prose .mermaid svg {
    display: block;
    max-width: none !important;
    margin: 0 auto;
}

.reading-font-size-control {
    border-radius: 999px;
}

.reading-font-size-control:focus-visible {
    outline: 3px solid rgba(255, 121, 0, 0.45);
    outline-offset: 3px;
}

.reading-font-size-control[data-current-font-size="small"] img,
.reading-font-size-control[data-current-font-size="large"] img,
.reading-font-size-control[data-current-font-size="xlarge"] img,
.reading-font-size-control[data-current-font-size="custom"] img {
    filter: drop-shadow(0 0 0.35rem rgba(255, 121, 0, 0.45));
}

.reading-font-size-popover {
    position: fixed;
    z-index: 70;
    width: min(280px, calc(100vw - 24px));
    padding: 12px;
    border: 1px solid rgba(51, 51, 51, 0.12);
    border-radius: 10px;
    background: #ffffff;
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.18);
}

.dark .reading-font-size-popover {
    border-color: rgba(255, 255, 255, 0.16);
    background: #1f2937;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.4);
}

.reading-font-size-popover[hidden] {
    display: none;
}

.reading-font-size-popover__options {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
    margin-bottom: 12px;
}

.reading-font-size-option {
    min-height: 34px;
    padding: 0 4px;
    border: 1px solid rgba(51, 51, 51, 0.12);
    border-radius: 7px;
    background: #f8fafc;
    color: #333333;
    font-family: var(--font-main);
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.reading-font-size-option:hover,
.reading-font-size-option:focus-visible {
    border-color: rgba(255, 121, 0, 0.7);
    outline: none;
}

.reading-font-size-option.is-active {
    border-color: #FF7900;
    background: #FF7900;
    color: #ffffff;
}

.dark .reading-font-size-option {
    border-color: rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.06);
    color: #f8fafc;
}

.dark .reading-font-size-option.is-active {
    border-color: #FF7900;
    background: #FF7900;
    color: #ffffff;
}

.reading-font-size-popover__slider-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 6px;
    color: #4b5563;
    font-family: var(--font-main);
    font-size: 12px;
    font-weight: 700;
}

.dark .reading-font-size-popover__slider-header {
    color: #d1d5db;
}

.reading-font-size-value {
    min-width: 44px;
    text-align: right;
    color: #FF7900;
    font-variant-numeric: tabular-nums;
}

.reading-font-size-slider {
    width: 100%;
    accent-color: #FF7900;
    cursor: pointer;
}