/* Selection Highlight */
::-moz-selection {
    color: #ffffff;
    background: #8DB9FF;
    background-image: none;
    -webkit-text-fill-color: #ffffff;
}

::selection {
    color: #ffffff;
    background: #8DB9FF;
    background-image: none;
    -webkit-text-fill-color: #ffffff;
}

/* Base Light Theme (Default) */
:root,
[data-bs-theme="light"] {
    --bg-color: #ffffff;
    --bg-alt: #f8f9fa;
    --bg-card: #ffffff;
    --text-color: #212529;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --border-hover: #adb5bd;

    /* Accent & Link Colors */
    --accent-color: #0d6efd;
    --accent-hover: #0a58ca;
    --link-color: #0d6efd;
    --link-hover: #0a58ca;

    /* Buttons */
    --btn-primary-bg: #0d6efd;
    --btn-primary-hover: #0b5ed7;
    --btn-primary-text: #ffffff;
    --btn-secondary-bg: #f8f9fa;
    --btn-secondary-hover: #e9ecef;
    --btn-secondary-border: #dee2e6;
    --btn-secondary-text: #212529;

    /* Inputs */
    --input-bg: #ffffff;
    --input-border: #ced4da;
    --input-text: #212529;
    --input-focus-border: #86b7fe;
    --input-focus-shadow: rgba(13, 110, 253, 0.25);

    /* Theme Toggle */
    --btn-toggle-bg: rgba(0, 0, 0, 0.05);
    --btn-toggle-hover: rgba(0, 0, 0, 0.1);
    --btn-toggle-border: rgba(0, 0, 0, 0.1);
    --btn-toggle-text: #333333;

    /* Status Result Boxes */
    --success-bg: #d1e7dd;
    --success-border: #a3cfbb;
    --success-text: #0f5132;

    --danger-bg: #f8d7da;
    --danger-border: #f1aeb5;
    --danger-text: #842029;

    --warning-bg: #fff3cd;
    --warning-border: #ffe69c;
    --warning-text: #664d03;

    /* Code Blocks */
    --code-bg: #f6f8fa;
    --code-border: #d0d7de;
    --code-text: #1f2328;

    /* Typography & Dimensions */
    --font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --max-width: 800px;
}

/* Dark Theme */
[data-bs-theme="dark"] {
    --bg-color: #212529;
    --bg-alt: #2b3035;
    --bg-card: #2b3035;
    --text-color: #f8f9fa;
    --text-muted: #adb5bd;
    --border-color: #495057;
    --border-hover: #6c757d;

    /* Dark Mode Accent & Link Colors */
    --accent-color: #8DB9FF;
    --accent-hover: #b6d4fe;
    --link-color: #8DB9FF;
    --link-hover: #b6d4fe;

    /* Buttons */
    --btn-primary-bg: #0d6efd;
    --btn-primary-hover: #0b5ed7;
    --btn-primary-text: #ffffff;
    --btn-secondary-bg: #2b3035;
    --btn-secondary-hover: #343a40;
    --btn-secondary-border: #495057;
    --btn-secondary-text: #f8f9fa;

    /* Inputs */
    --input-bg: #2b3035;
    --input-border: #495057;
    --input-text: #f8f9fa;
    --input-focus-border: #8DB9FF;
    --input-focus-shadow: rgba(141, 185, 255, 0.25);

    /* Theme Toggle */
    --btn-toggle-bg: rgba(255, 255, 255, 0.1);
    --btn-toggle-hover: rgba(255, 255, 255, 0.2);
    --btn-toggle-border: rgba(255, 255, 255, 0.15);
    --btn-toggle-text: #f8fafc;

    /* Status Result Boxes */
    --success-bg: #0f3d2e;
    --success-border: #146c43;
    --success-text: #75b798;

    --danger-bg: #3d1418;
    --danger-border: #842029;
    --danger-text: #ea868f;

    --warning-bg: #332701;
    --warning-border: #664d03;
    --warning-text: #ffda6a;

    /* Code Blocks */
    --code-bg: #161b22;
    --code-border: #30363d;
    --code-text: #e6edf3;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    line-height: 1.6;
    font-size: 16px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.site-container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    padding: 0.875rem 1.5rem;
    width: 100%;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    width: 100%;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.15s ease;
}

a.brand:hover,
a.brand:focus,
a.brand:active {
    color: var(--text-color);
    text-decoration: none;
}

.brand-current {
    cursor: default;
}

.site-logo {
    display: block;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    flex-shrink: 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 1.25rem;
    flex-wrap: wrap;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--link-color);
    text-decoration: underline dashed;
    text-underline-offset: 4px;
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.25rem 0;
    transition: color 0.15s ease;
}

.nav-link:hover,
.nav-link:focus,
.nav-link:active {
    color: var(--link-hover);
    text-decoration: underline dashed;
}

.nav-link.active {
    font-weight: 700;
}


.theme-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--btn-toggle-bg);
    color: var(--btn-toggle-text);
    border: 1px solid var(--btn-toggle-border);
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
    flex-shrink: 0;
}

.theme-toggle-btn:hover {
    background-color: var(--btn-toggle-hover);
}

.theme-toggle-btn:active {
    transform: scale(0.92);
}

.theme-icon-svg {
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), color 0.6s ease;
    transform: rotate(0deg);
    color: #a1a1aa;
}

.sun-moon-circle {
    r: 9px;
    cx: 12px;
    cy: 12px;
    transition: r 0.4s ease, cx 0.4s ease;
}

.moon-mask-circle {
    cx: 15px;
    cy: 9px;
    r: 9px;
    transition: cx 0.4s ease, cy 0.4s ease, r 0.4s ease;
}

.sun-rays {
    transform: rotate(-90deg) scale(0);
    transform-origin: center;
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
}

/* Light Mode Sun Animation */
[data-bs-theme="light"] .theme-icon-svg,
html:not([data-bs-theme="dark"]) .theme-icon-svg {
    transform: rotate(90deg);
    color: #f59e0b;
}

[data-bs-theme="light"] .sun-moon-circle,
html:not([data-bs-theme="dark"]) .sun-moon-circle {
    r: 5px;
}

[data-bs-theme="light"] .moon-mask-circle,
html:not([data-bs-theme="dark"]) .moon-mask-circle {
    cx: 30px;
    cy: 0px;
}

[data-bs-theme="light"] .sun-rays,
html:not([data-bs-theme="dark"]) .sun-rays {
    transform: rotate(0deg) scale(1);
    opacity: 1;
}

/* Dark Mode Moon Animation */
[data-bs-theme="dark"] .theme-icon-svg {
    transform: rotate(0deg);
    color: #a1a1aa;
}

[data-bs-theme="dark"] .sun-moon-circle {
    r: 9px;
    cx: 12px;
    cy: 12px;
}

[data-bs-theme="dark"] .moon-mask-circle {
    cx: 15px;
    cy: 9px;
    r: 9px;
}

[data-bs-theme="dark"] .sun-rays {
    transform: rotate(-90deg) scale(0);
    opacity: 0;
}

/* ==========================================================================
   Main Content & Typography
   ========================================================================== */
.main-content {
    flex: 1;
    padding: 2.5rem 0;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

h2 {
    font-size: 1.45rem;
    font-weight: 600;
    margin-top: 2.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

p {
    margin-bottom: 1rem;
    color: var(--text-color);
}

ul,
ol {
    margin: 1rem 0 1rem 1.5rem;
    padding-left: 0.5rem;
    color: var(--text-color);
}

ul {
    list-style-type: disc;
}

ol {
    list-style-type: decimal;
}

li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

li > ul,
li > ol {
    margin-top: 0.375rem;
    margin-bottom: 0.375rem;
}

a {
    color: var(--link-color);
    text-decoration: underline dashed;
    text-underline-offset: 4px;
    transition: color 0.15s ease;
}

a:hover,
a:focus,
a:active {
    color: var(--link-hover);
    text-decoration: underline dashed;
}

/* Image links and logo link - without underline and without link color */
a:has(> img),
a.img-link {
    color: inherit;
    text-decoration: none;
}

a:has(> img):hover,
a:has(> img):focus,
a:has(> img):active,
a.img-link:hover {
    color: inherit;
    text-decoration: none;
}

/* ==========================================================================
   Form & Checker Tool
   ========================================================================== */
.checker-card {
    background-color: var(--bg-alt);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.checker-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Keep the native hidden attribute authoritative over component display rules. */
.checker-card [hidden] {
    display: none !important;
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

.number-input {
    width: 100%;
    font-family: var(--font-family);
    font-size: 1.0625rem;
    padding: 0.75rem 0.875rem;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    background-color: var(--input-bg);
    color: var(--input-text);
    outline: none;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out, background-color 0.2s ease;
}

.textarea-input {
    min-height: 100px;
    resize: vertical;
    line-height: 1.5;
    font-family: var(--font-mono);
    word-break: break-all;
}

.number-input:focus {
    border-color: var(--input-focus-border);
    box-shadow: 0 0 0 0.25rem var(--input-focus-shadow);
}

.form-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.digit-counter {
    margin-left: auto;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 500;
    padding: 0.55rem 1.25rem;
    border-radius: 6px;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border-color: var(--btn-primary-bg);
}

.btn-primary:hover {
    background-color: var(--btn-primary-hover);
    border-color: var(--btn-primary-hover);
    color: #ffffff;
    text-decoration: none;
}

.btn-secondary {
    background-color: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    border-color: var(--btn-secondary-border);
}

.btn-secondary:hover {
    background-color: var(--btn-secondary-hover);
    color: var(--btn-secondary-text);
    text-decoration: none;
}

.btn:disabled,
.btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Mersenne Form Controls */
.mersenne-toggle-link {
    font-size: 0.9375rem;
    color: var(--link-color);
    text-decoration: underline dashed;
    text-underline-offset: 4px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.25rem 0.25rem;
    font-family: inherit;
    transition: color 0.15s ease;
}

.mersenne-toggle-link:hover,
.mersenne-toggle-link:focus,
.mersenne-toggle-link:active {
    color: var(--link-hover);
    text-decoration: underline dashed;
}

.mersenne-panel {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem 1.25rem;
    margin-top: 1rem;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.mersenne-label {
    display: block;
    font-size: 0.9375rem;
    margin-bottom: 0.6rem;
    color: var(--text-color);
}

.mersenne-input-group {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    flex-wrap: wrap;
}

.mersenne-input-prefix {
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    color: var(--text-muted);
}

.mersenne-number-input {
    width: 150px;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
}

.mersenne-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Quick test chip buttons */
.quick-tests {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.quick-tests-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.chip-btn {
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.25rem 0.625rem;
    font-size: 0.875rem;
    color: var(--text-color);
    cursor: pointer;
    font-family: inherit;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.chip-btn:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-alt);
}

.chip-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Related tools bar under checker form */
.related-tools {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.9375rem;
}

.related-tools-label {
    font-weight: 600;
    color: var(--text-color);
}

.related-tool-link {
    color: var(--link-color);
    text-decoration: underline dashed;
    text-underline-offset: 4px;
    transition: color 0.15s ease;
}

.related-tool-link:hover,
.related-tool-link:focus,
.related-tool-link:active {
    color: var(--link-hover);
    text-decoration: underline dashed;
}

.related-tools-sep {
    color: var(--text-muted);
}

/* Shared progress panel used by the checker and prime generator. */
.progress-panel {
    margin-top: 1.25rem;
    padding: 1rem 1.125rem 1.125rem;
    border: 1px solid rgba(128, 128, 128, 0.35);
    border: 1px solid color-mix(in srgb, currentColor 30%, transparent);
    border-radius: 6px;
}

.progress-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.6rem;
}

.worker-progress-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.worker-progress-meter {
    min-width: 0;
    padding: 0.7rem 0.75rem 0.75rem;
    border: 1px solid rgba(128, 128, 128, 0.28);
    border: 1px solid color-mix(in srgb, currentColor 24%, transparent);
    border-radius: 5px;
    background: rgba(128, 128, 128, 0.06);
    background: color-mix(in srgb, currentColor 5%, transparent);
}

.worker-progress-meter .progress-head {
    margin-bottom: 0.5rem;
}

.worker-progress-meter.is-stopped {
    opacity: 0.55;
}

.progress-estimate-note {
    margin: 0.55rem 0 0;
    font-size: 0.78rem;
    line-height: 1.4;
    opacity: 0.65;
}

.progress-stage {
    font-weight: 600;
}

.progress-pct {
    font-variant-numeric: tabular-nums;
    opacity: 0.75;
}

.progress-track {
    height: 8px;
    overflow: hidden;
    border-radius: 4px;
    background: rgba(128, 128, 128, 0.25);
    background: color-mix(in srgb, currentColor 20%, transparent);
}

.progress-fill {
    width: 0;
    height: 100%;
    background: currentColor;
    transition: width 0.2s linear;
}

.progress-fill-overall {
    opacity: 0.78;
}

.progress-eta {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 0.7rem;
    padding: 0.6rem 0.75rem;
    border-radius: 5px;
    background: rgba(128, 128, 128, 0.08);
    background: color-mix(in srgb, currentColor 7%, transparent);
}

.progress-eta-label {
    font-size: 0.82rem;
    font-weight: 600;
}

.progress-eta-value {
    white-space: nowrap;
    font-size: 1.05rem;
    font-variant-numeric: tabular-nums;
}

.progress-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
    gap: 0.75rem 1.25rem;
    margin: 0.9rem 0 0;
}

.progress-stat dt {
    margin: 0;
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    opacity: 0.7;
}

.progress-stat dd {
    margin: 0.15rem 0 0;
    font-size: 1.05rem;
    font-variant-numeric: tabular-nums;
}

.progress-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1rem;
}

.progress-hint {
    font-size: 0.85rem;
    opacity: 0.65;
}

.btn-abort {
    border: 1px solid rgba(128, 128, 128, 0.55);
    border: 1px solid color-mix(in srgb, currentColor 45%, transparent);
    background: transparent;
    color: inherit;
    cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
    .progress-fill {
        transition: none;
    }
}

@media (max-width: 420px) {
    .progress-eta {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.2rem;
    }
}

/* ==========================================================================
   Prime Generator Tool Styles
   ========================================================================== */
.generator-mode-fieldset {
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

.generator-mode-legend {
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.generator-mode-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.mode-option-card {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.75rem;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.mode-option-card:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-alt);
}

.mode-option-card.is-active {
    border-color: var(--btn-primary-bg);
    background-color: var(--bg-card);
    box-shadow: 0 0 0 1px var(--btn-primary-bg);
}

.mode-option-card:focus-within {
    box-shadow: 0 0 0 0.25rem var(--input-focus-shadow);
}

.mode-radio-input {
    margin: 0;
    cursor: pointer;
    accent-color: var(--btn-primary-bg);
    width: 16px;
    height: 16px;
}

.mode-card-title {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-color);
    cursor: pointer;
}

.generator-form-group {
    margin: 0;
}

.generator-form-label {
    display: block;
    font-size: 0.9375rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.generator-number-input {
    min-height: 50px;
    font-family: var(--font-mono);
}

.generator-form-hint {
    margin: 0.5rem 0 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

#generator-form [hidden] {
    display: none !important;
}

#generator-form .generator-presets {
    margin-top: 0;
}

@media (max-width: 640px) {
    .mode-option-card {
        flex: 1 1 100%;
    }
}

.generator-result {
    margin-top: 1.5rem;
    background-color: var(--bg-card);
    border: 1px solid var(--success-border);
    border-radius: 8px;
    padding: 1.5rem;
    animation: fadeIn 0.2s ease;
}

.generator-result-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.875rem;
}

.generator-result-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--success-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.generator-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    background-color: var(--success-bg);
    border: 1px solid var(--success-border);
    color: var(--success-text);
}

.generator-output-display {
    background-color: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 6px;
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    color: var(--code-text);
    word-break: break-all;
    max-height: 250px;
    overflow-y: auto;
    line-height: 1.6;
    margin-bottom: 1rem;
    user-select: all;
}

.generator-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.generator-meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.generator-meta-item {
    font-size: 0.8125rem;
}

.generator-meta-label {
    color: var(--text-muted);
    margin-bottom: 0.2rem;
}

.generator-meta-val {
    font-weight: 600;
    color: var(--text-color);
    font-family: var(--font-mono);
}

/* ==========================================================================
   Results Display
   ========================================================================== */
.result-box {
    margin-top: 1.5rem;
    padding: 1.25rem 1.5rem;
    border-radius: 6px;
    border: 1px solid transparent;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.result-box.result-prime {
    background-color: var(--success-bg);
    border-color: var(--success-border);
    color: var(--success-text);
}

.result-box.result-not_prime {
    background-color: var(--danger-bg);
    border-color: var(--danger-border);
    color: var(--danger-text);
}

.result-box.result-invalid,
.result-box.result-too_large {
    background-color: var(--warning-bg);
    border-color: var(--warning-border);
    color: var(--warning-text);
}

.result-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.result-box p {
    color: inherit;
    margin-bottom: 0.5rem;
}

.result-box p:last-child {
    margin-bottom: 0;
}

.result-meta {
    font-size: 0.9375rem;
    margin-top: 0.5rem;
    opacity: 0.9;
}

.noscript-warning-box {
    background-color: var(--warning-bg);
    border: 1px solid var(--warning-border);
    color: var(--warning-text);
    border-radius: 6px;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
}

.noscript-warning-box h2 {
    color: inherit;
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.noscript-warning-box p {
    color: inherit;
    margin-bottom: 0.5rem;
}

.noscript-warning-box p:last-child {
    margin-bottom: 0;
}

/* ==========================================================================
   Content Boxes, Lists & Tables
   ========================================================================== */
.info-section {
    margin-top: 2.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    transition: border-color 0.2s ease;
}

.content-list {
    margin: 1rem 0 1rem 1.5rem;
    color: var(--text-color);
}

.content-list li {
    margin-bottom: 0.5rem;
}

.content-box {
    background-color: var(--bg-alt);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.25rem 1.5rem;
    margin: 1.25rem 0;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.inline-code,
code:not(pre code) {
    font-family: var(--font-mono);
    background-color: var(--code-bg);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    border: 1px solid var(--code-border);
    color: var(--code-text);
    white-space: nowrap;
}

/* ==========================================================================
   Code Blocks & Preformatted Code
   ========================================================================== */
pre,
.code-box {
    background-color: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--code-text);
    tab-size: 4;
    -moz-tab-size: 4;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

pre code,
.code-box code {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: transparent;
    padding: 0;
    border: none;
    border-radius: 0;
    white-space: pre;
    word-break: normal;
    word-wrap: normal;
    display: block;
}

/* Custom Scrollbar for Code Blocks */
pre::-webkit-scrollbar,
.code-box::-webkit-scrollbar {
    height: 6px;
}

pre::-webkit-scrollbar-track,
.code-box::-webkit-scrollbar-track {
    background: transparent;
}

pre::-webkit-scrollbar-thumb,
.code-box::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

pre::-webkit-scrollbar-thumb:hover,
.code-box::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.75rem 0;
}

.data-table th,
.data-table td {
    padding: 0.625rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-weight: 600;
    color: var(--text-color);
}

.data-table tr:hover {
    background-color: var(--bg-alt);
}

/* Sources & References */
.sources-section {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.sources-list {
    list-style: decimal;
    margin: 1rem 0 1rem 1.5rem;
    padding-left: 0.5rem;
    color: var(--text-color);
}

.sources-list li {
    margin-bottom: 0.625rem;
    line-height: 1.55;
}

.sources-list .source-title {
    font-weight: normal;
    color: inherit;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background-color: var(--bg-alt);
    border-top: 1px solid var(--border-color);
    padding: 2.75rem 0 2rem;
    width: 100%;
    margin-top: auto;
    font-size: 0.875rem;
    color: var(--text-muted);
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem 2.5rem;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-col-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-color);
    opacity: 0.8;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links li {
    margin: 0;
    line-height: 1.4;
}

.footer-links a,
.footer-legal a,
.footer-copyright a,
.site-footer a {
    color: var(--link-color);
    text-decoration: underline dashed;
    text-underline-offset: 3px;
    transition: color 0.15s ease;
}

.footer-links a:hover,
.footer-links a:focus,
.footer-links a:active,
.footer-legal a:hover,
.footer-legal a:focus,
.footer-legal a:active,
.footer-copyright a:hover,
.footer-copyright a:focus,
.footer-copyright a:active,
.site-footer a:hover,
.site-footer a:focus,
.site-footer a:active {
    color: var(--link-hover);
    text-decoration: underline dashed;
}

.footer-bottom {
    margin-top: 2.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.footer-copyright {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.8125rem;
}

.footer-legal {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8125rem;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .nav-wrapper {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 680px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.75rem 1.5rem;
    }
}

@media (max-width: 600px) {
    .site-header {
        padding: 0.875rem 1rem;
    }

    .site-footer {
        padding: 2rem 0 1.5rem;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .input-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

@media (max-width: 440px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}