:root {
    --bg-main: #FFFFFF;
    --bg-surface: #F9F9F9;
    --bg-alt: #F0F0F0;
    --text-main: #000000;
    --text-muted: #666666;
    --text-on-accent: #ffffff;
    --accent: #0000EE;
    --accent-light: #E0E0FF;
    --border: #000000;
}

.dark {
    --bg-main: #000000;
    --bg-surface: #111111;
    --bg-alt: #222222;
    --text-main: #E0E0E0;
    --text-muted: #AAAAAA;
    --text-on-accent: #ffffff;
    --accent: #5599FF;
    --accent-light: #223355;
    --border: #555555;
}

/* Clean No-Nonsense 90s/00s Styling Globally */
* {
    border-radius: 0 !important;
}

.bg-surface, .bg-alt, .app-page, .dir-item, .tool-container {
    box-shadow: none !important;
    border: 1px solid var(--border) !important;
    backdrop-filter: none !important;
}

button, .tool-link, .dir-item {
    box-shadow: none !important;
    border: 1px solid var(--border) !important;
    background-color: var(--bg-alt);
}

button:active, .tool-link:active, .dir-item:active {
    background-color: var(--text-main) !important;
    color: var(--bg-main) !important;
}

body {
    font-family: "MS Sans Serif", "Microsoft Sans Serif", Geneva, Tahoma, Verdana, sans-serif !important;
    background-color: var(--bg-main);
    color: var(--text-main);
    letter-spacing: normal;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Classic layout constraints */
.max-w-7xl {
    max-width: 960px !important;
}

/* Legacy Web Overrides (XP Vibe) */
body {
    font-family: Tahoma, Verdana, Arial, sans-serif !important;
}

a {
    color: #0000EE;
    text-decoration: underline;
}
a:visited {
    color: #551A8B;
}
a.nav-link {
    text-decoration: none;
}

/* 2000s Gradient Buttons */
button, .btn, .tool-link, input[type="button"], input[type="submit"] {
    border: 1px solid #7b9ebd !important;
    border-radius: 3px !important;
    background: linear-gradient(to bottom, #ffffff 0%, #ece9d8 100%) !important;
    color: #000000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
}
button:active, .btn:active, .tool-link:active, input[type="button"]:active, input[type="submit"]:active {
    background: linear-gradient(to bottom, #ece9d8 0%, #ffffff 100%) !important;
    border-style: solid !important;
}

/* Dark mode adjustments for XP Royale/Zune feel */
html.dark button, html.dark .btn, html.dark .tool-link, html.dark input[type="button"], html.dark input[type="submit"] {
    background: linear-gradient(to bottom, #444444 0%, #222222 100%) !important;
    color: #ffffff !important;
    border-color: #111111 !important;
}
html.dark button:active, html.dark .btn:active, html.dark .tool-link:active, html.dark input[type="button"]:active, html.dark input[type="submit"]:active {
    background: linear-gradient(to bottom, #222222 0%, #444444 100%) !important;
}

.app-page, .tool-container {
    padding: 32px !important;
    background-color: var(--bg-surface) !important;
    border: 1px solid #7b9ebd !important;
    border-radius: 4px !important;
}

iframe, #sidebar-search {
    border: 1px solid #7b9ebd !important;
    border-radius: 5px !important;
    box-shadow: inset 1px 1px 3px rgba(0,0,0,0.15) !important;
}

/* XP Task Pane Header */
.xp-task-header {
    background: linear-gradient(to right, #245EDC 0%, #3f79f2 100%) !important;
    color: #ffffff !important;
    border: 1px solid #245EDC !important;
    border-top-left-radius: 3px !important;
    border-top-right-radius: 3px !important;
    border-bottom-left-radius: 0px !important;
    border-bottom-right-radius: 0px !important;
    text-transform: none !important;
    letter-spacing: normal !important;
    font-weight: 700 !important;
}

/* XP Selection Highlight */
.tool-link:hover {
    background-color: #316ac5 !important;
    border-color: #316ac5 !important;
    color: #ffffff !important;
}
.tool-link:hover h3, .tool-link:hover p, .tool-link:hover div {
    color: #ffffff !important;
}

html.dark .xp-task-header {
    background: linear-gradient(to right, #333333 0%, #444444 100%) !important;
    border-color: #222222 !important;
}
html.dark .tool-link:hover {
    background-color: #555555 !important;
    border-color: #555555 !important;
}
html.dark #tool-placeholder {
    background-color: #222222 !important;
    border-color: #444444 !important;
}
html.dark #tool-placeholder p {
    color: #888888 !important;
}

nav {
    border-bottom: 3px solid #245EDC !important;
}

/* Classic header lines */
.app-page > header > h2, .tool-container > header > h2 {
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
    margin-bottom: 16px;
}



.dark 

.bg-surface, .bg-alt {
    
    -webkit-
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.04);
}

.dark .bg-surface, .dark .bg-alt {
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.15);
}

/* Global button hierarchy enhancements */
button.bg-accent, a.bg-accent {
    border: 1px solid rgba(0, 0, 0, 0.25) !important;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06) !important;
}

.dark button.bg-accent, .dark a.bg-accent {
    border: 1px solid rgba(255, 255, 255, 0.25) !important;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2) !important;
}

.logo-light {
    display: block;
}

.logo-dark {
    display: none;
}

.dark .logo-light {
    display: none !important;
}

.dark .logo-dark {
    display: block !important;
}

/* ═══ Tool Row & Column Resize Gutter ═══ */
.tool-row {
    display: flex;
    align-items: stretch;
}

.grid-gutter {
    flex: 0 0 12px;
    cursor: col-resize;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    -webkit-user-select: none;
    user-select: none;
}

.grid-gutter::before {
    content: '';
    width: 4px;
    height: 48px;
    border-radius: 4px;
    background: var(--border);
    transition: all 0.2s ease;
    position: relative;
    z-index: 1;
}

.grid-gutter::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: -4px;
    right: -4px;
}

.grid-gutter:hover::before {
    background: var(--accent);
    height: 64px;
    width: 5px;
}

.grid-gutter.dragging::before {
    background: var(--accent);
    height: 80px;
    width: 5px;
    box-shadow: 0 0 8px rgba(163, 124, 77, 0.3);
}

.grid-gutter-dragging iframe {
    pointer-events: none !important;
}

.grid-gutter-dragging {
    cursor: col-resize !important;
    -webkit-user-select: none !important;
    user-select: none !important;
}

.tool-link {
    transition: all 0.2s ease;
}

.tool-link:hover {
}

#qr-result>svg:not(.barcode) {
    width: 160px;
    height: 160px;
    margin: 0 auto;
}

.drag-over {
    border: 2px dashed var(--accent) !important;
    background-color: var(--accent-light) !important;
    box-shadow: inset 0 0 24px rgba(37, 99, 235, 0.25) !important;
}

.emoji-item {
    cursor: pointer;
    transition: background-color 0.1s ease;
    user-select: none;
}

.emoji-item:hover {
    background-color: var(--accent-light);
}

.emoji-item:active {
    background-color: var(--accent);
    color: var(--text-on-accent);
}

.mode-btn-active {
    background-color: var(--accent) !important;
    color: var(--text-on-accent) !important;
}

.custom-scrollbar::-webkit-scrollbar {
    width: 4px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: var(--bg-alt);
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}

input,
textarea,
select {
    background-color: rgba(0, 0, 0, 0.03);
    color: var(--text-main);
    border: 1px solid var(--border);
    outline: none;
    transition: all 0.2s ease;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.04);
}

.dark input,
.dark textarea,
.dark select {
    background-color: rgba(255, 255, 255, 0.05); /* very subtle white overlay on dark background */
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--accent);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.04), 0 0 0 2px var(--accent-light);
}

.dark input:focus,
.dark textarea:focus,
.dark select:focus {
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2), 0 0 0 2px var(--accent-light);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

.suggestion-btn {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    background-color: var(--bg-surface);
    color: var(--text-main);
    transition: all 0.2s ease;
}

.secondary-btn {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 1.5rem;
    border-radius: 0.25rem;
    border: 1px solid var(--border);
    background-color: var(--bg-surface);
    color: var(--text-main);
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.action-btn {
    background-color: var(--accent) !important;
    color: var(--text-on-accent) !important;
    border-radius: 0.25rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.2s ease;
    border: 1px solid var(--border) !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.action-btn:hover {
    opacity: 0.8;
}

.action-btn:active {
    transform: translateY(1px) scale(0.98);
}

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

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

@keyframes slot-spin {
    0% {
        transform: translateY(100%);
        opacity: 0;
    }

    25% {
        opacity: 1;
    }

    75% {
        opacity: 1;
    }

    100% {
        transform: translateY(-100%);
        opacity: 0;
    }
}

@keyframes slot-stop {
    0% {
        transform: translateY(100%);
        opacity: 0;
    }

    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

.take-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 130px;
    overflow: hidden;
    display: flex;
    flex-direction: row;
}

.take-card:hover {
    max-height: 800px;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.15);
    border-color: var(--accent);
    transform: translateY(-4px);
}

.take-content {
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease-out;
    transition-delay: 0.1s;
}

.take-card:hover .take-content {
    opacity: 1;
    transform: translateY(0);
}

.image-placeholder {
    background-color: var(--bg-alt);
    min-width: 100px;
    width: 100px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--border);
}

.action-btn {
    transition: all 0.2s ease;
}

.action-btn:active {
    transform: scale(0.9);
}

@keyframes pop-match {
    0% {
        transform: scale(1);
        background-color: var(--bg-surface);
        border-color: var(--border);
    }

    50% {
        transform: scale(1.15);
        background-color: var(--accent);
        border-color: var(--accent);
    }

    100% {
        transform: scale(1);
        background-color: var(--bg-surface);
        border-color: var(--border);
    }
}

.pop-match {
    animation: pop-match 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
    z-index: 10;
    position: relative;
}

#td-fullscreen-wrapper:fullscreen {
    padding: 16px;
    background-color: var(--bg-main);
    overflow-y: auto;
}

#nav-wd-add-val::-webkit-inner-spin-button,
#nav-wd-add-val::-webkit-outer-spin-button,
#timer-input::-webkit-inner-spin-button,
#timer-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}



html.is-iframe {
    background: transparent;
}

html.is-iframe body {
    background-color: transparent !important;
    min-height: 0 !important;
    height: auto !important;
    overflow: hidden !important;
}

html.is-iframe #site-header,
html.is-iframe #site-footer,
html.is-iframe .standalone-only {
    display: none !important;
}

html.is-iframe main {
    padding: 1.5rem !important;
    max-width: none !important;
    margin: 0 !important;
    min-height: 0 !important;
}



/* Custom styles from test-freq.html */
.pattern-font {
    font-family: 'Noto Sans JP', sans-serif;
    letter-spacing: 0.2em;
}

.option-btn {
    transition: all 0.2s ease;
    font-family: 'Noto Sans JP', sans-serif;
}

.correct {
    background-color: var(--accent) !important;
    color: white !important;
    border-color: var(--accent) !important;
}

.incorrect {
    background-color: var(--bg-alt) !important;
    color: white !important;
    border-color: var(--border) !important;
}

/* Custom styles from learn-kana.html */
.kana-font {
    font-family: 'Noto Sans JP', sans-serif;
}

.level-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    outline: none;
    margin: 1.5rem 0;
}

.level-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent);
    border: 3px solid var(--bg-surface);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.1s ease;
}

.level-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.option-btn {
    transition: all 0.2s ease;
    font-family: 'Inter', sans-serif;
}

.correct {
    background-color: var(--accent) !important;
    color: white !important;
    border-color: var(--accent) !important;
}

.incorrect {
    background-color: var(--bg-alt) !important;
    color: white !important;
    border-color: var(--border) !important;
}

input:focus {
    outline: none;
    border-color: var(--accent);
}

.step-label {
    cursor: pointer;
    transition: color 0.2s;
}

.step-label.active {
    color: var(--accent);
    font-weight: 700;
}

/* Custom styles from tool-emoji.html */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.input-box {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.input-box:focus {
    outline: none;
    border-color: var(--accent);
}

.symbol-card {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
}

.symbol-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.symbol-card:active {
    transform: scale(0.95);
}

.toggle-group {
    display: flex;
    background: var(--bg-alt);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.toggle-option {
    flex: 1;
    text-align: center;
    padding: 8px 4px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 9px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.2s ease;
    color: var(--text-muted);
}

.toggle-option.active {
    background: var(--text-main);
    color: var(--bg-surface);
}

.category-tag {
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid var(--border);
    font-size: 8px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-muted);
    white-space: nowrap;
}

.category-tag.active {
    background: var(--text-main);
    color: var(--bg-surface);
    border-color: var(--text-main);
}

.category-tag:hover:not(.active) {
    border-color: var(--accent);
    color: var(--accent);
}

.skin-tone-btn {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: transform 0.1s;
}

.skin-tone-btn.active {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.skin-tone-btn:hover {
    transform: scale(1.1);
}

.copied-toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-main);
    color: var(--bg-surface);
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    z-index: 50;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.copied-toast.show {
    opacity: 1;
}

#results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 1rem;
}

.scratchpad {
    min-height: 120px;
    font-family: 'Inter', sans-serif;
    font-size: 20px;
    font-weight: 400;
}

.scratchpad::placeholder {
    font-family: 'Inter', sans-serif;
    font-style: italic;
    font-size: 13px;
    letter-spacing: 0.02em;
    opacity: 0.5;
    color: var(--text-muted);
}

.tech-meta {
    font-family: monospace;
    font-size: 7px;
    opacity: 0.5;
    cursor: copy;
}

.tech-meta:hover {
    opacity: 1;
    color: var(--accent);
}

/* Custom styles from toy-def.html */
.custom-scrollbar::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}

#td-canvas {
    touch-action: none;
    background-color: var(--bg-surface);
}

.tower-btn {
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}

/* Custom styles from ai.html */
#chat-window {
    height: calc(100vh - 280px);
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

#chat-window::-webkit-scrollbar {
    width: 4px;
}

#chat-window::-webkit-scrollbar-thumb {
    background-color: var(--border);
    border-radius: 10px;
}

.thinking-dot {
    display: inline-block;
    width: 3px;
    height: 3px;
    background-color: var(--text-muted);
    border-radius: 50%;
    margin-right: 2px;
    animation: blink 1.4s infinite both;
}

.thinking-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.thinking-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes blink {

    0%,
    80%,
    100% {
        opacity: 0;
    }

    40% {
        opacity: 1;
    }
}

.user-bubble {
    background-color: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 1rem;
    border-top-right-radius: 0.1rem;
    padding: 0.75rem 1rem;
    max-width: 80%;
}

.ai-content {
    line-height: 1.6;
}

.system-notice {
    text-align: center;
    font-size: 0.7rem;
    color: #ef4444;
    background-color: #fef2f2;
    padding: 0.4rem;
    border-radius: 0.4rem;
    border: 1px solid #fee2e2;
    margin: 1rem 0;
    font-weight: 700;
    text-transform: uppercase;
}

.suggestion-btn {
    border: 1px solid var(--border);
    padding: 0.4rem 0.8rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    color: var(--text-main);
    transition: all 0.2s;
    background: var(--bg-surface);
    font-weight: 700;
}

.suggestion-btn:hover {
    border-color: var(--accent);
    background-color: var(--accent-light);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Custom styles from tool-qr.html */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.input-box {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.input-box:focus {
    outline: none;
    border-color: var(--accent);
}

.gen-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.gen-card:hover {
    box-shadow: 0 10px 20px -10px rgba(0, 0, 0, 0.1);
    border-color: var(--accent);
}

.action-btn {
    transition: all 0.2s ease;
}

.action-btn:active {
    transform: scale(0.96);
}

.toggle-group {
    display: flex;
    background: var(--bg-alt);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.toggle-option {
    flex: 1;
    text-align: center;
    padding: 8px 4px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 9px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.2s ease;
    color: var(--text-muted);
}

.toggle-option.active {
    background: var(--text-main);
    color: var(--bg-surface);
}

.toggle-option:not(.active):hover {
    background: rgba(0, 0, 0, 0.05);
}

.render-canvas {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

.square-symbol {
    aspect-ratio: 1 / 1 !important;
    height: auto !important;
    max-width: 180px !important;
}

.loader-dots:after {
    content: '...';
    animation: dots 1.5s steps(5, end) infinite;
}

@keyframes dots {

    0%,
    20% {
        color: rgba(0, 0, 0, 0);
        text-shadow: .25em 0 0 rgba(0, 0, 0, 0), .5em 0 0 rgba(0, 0, 0, 0);
    }

    40% {
        color: var(--text-muted);
        text-shadow: .25em 0 0 rgba(0, 0, 0, 0), .5em 0 0 rgba(0, 0, 0, 0);
    }

    60% {
        text-shadow: .25em 0 0 var(--text-muted), .5em 0 0 rgba(0, 0, 0, 0);
    }

    80%,
    100% {
        text-shadow: .25em 0 0 var(--text-muted), .5em 0 0 var(--text-muted);
    }
}

/* Custom styles from hottakes.html */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.take-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 130px;
    overflow: hidden;
    display: flex;
    flex-direction: row;
}

.take-card:hover {
    max-height: 800px;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.15);
    border-color: var(--accent);
    transform: translateY(-4px);
}

.take-content {
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease-out;
    transition-delay: 0.1s;
}

.take-card:hover .take-content {
    opacity: 1;
    transform: translateY(0);
}

.image-placeholder {
    background-color: var(--bg-alt);
    min-width: 100px;
    width: 100px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--border);
}

.action-btn {
    transition: all 0.2s ease;
}

.action-btn:active {
    transform: scale(0.9);
}

/* Article Global Styles */
.drop-cap {
    float: left;
    font-size: 4.8rem;
    line-height: 0.8;
    padding-right: 12px;
    padding-top: 4px;
    font-weight: 900;
    color: var(--accent);
}

.article-content p {
    margin-bottom: 2rem;
    line-height: 1.8;
    font-size: 1.1rem;
    font-weight: 300;
    letter-spacing: 0.01em;
}

.article-content strong {
    font-weight: 700;
    color: var(--text-main);
}

.reference-list {
    list-style-type: none;
    padding: 0;
}

.reference-item {
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.reference-number {
    font-weight: 900;
    color: var(--accent);
    margin-right: 0.5rem;
    font-size: 0.75rem;
    vertical-align: top;
}

.reference-link {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.reference-link:hover {
    border-bottom-color: var(--accent);
}

.table-of-errors,
.regex-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    margin: 2rem 0;
    background: var(--bg-surface);
    border: 1px solid var(--border);
}

.table-of-errors th, .table-of-errors td,
.regex-table th, .regex-table td {
    padding: 1rem;
    text-align: left;
    border: 1px solid var(--border);
}

.table-of-errors th,
.regex-table th {
    background: var(--bg-alt);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

code {
    background: var(--bg-alt);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: monospace;
    font-size: 0.9em;
}

.playground-container {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 3rem 0;
}

.playground-input {
    width: 100%;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 0.75rem;
    border-radius: 4px;
    font-family: monospace;
    margin-bottom: 1rem;
}

.match-highlight {
    background: rgba(163, 124, 77, 0.2);
    border-bottom: 2px solid var(--accent);
}