/* ============================================================ ClackLab — Core Design System Shared across all tools (EN/KO/JA/TR). One engine, one look. Identity: precision lab instrument — mono readouts, dual signal colors (orange = action, phosphor green = live data). ============================================================ */ /* Fonts are linked directly from each page (preconnect + swap) so they load in parallel with this stylesheet instead of behind it. */ :root { /* ---- Color ---- */ --bg: #0b0e14; --bg-alt: #0e131b; --surface: #141a24; --surface-2: #1a2130; --border: #232b3a; --border-strong: #2f3a4d; --txt: #e7ecf5; --txt-dim: #8b96ab; --txt-faint: #5a6478; --accent: #ff5a3c; /* signal orange — action / CTA */ --accent-dim: #c94427; --accent-soft: rgba(255, 90, 60, 0.12); --trace: #39e6a4; /* phosphor green — live measurement */ --trace-dim: #1f8f66; --trace-soft: rgba(57, 230, 164, 0.12); --warn: #ffb020; --danger: #ff4d6a; /* ---- Type ---- */ --font-display: 'Space Grotesk', system-ui, sans-serif; --font-body: 'Inter', system-ui, -apple-system, sans-serif; --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Menlo, monospace; --step--1: clamp(0.8rem, 0.78rem + 0.1vw, 0.875rem); --step-0: clamp(1rem, 0.97rem + 0.15vw, 1.0625rem); --step-1: clamp(1.2rem, 1.13rem + 0.35vw, 1.4rem); --step-2: clamp(1.6rem, 1.4rem + 0.9vw, 2.1rem); --step-3: clamp(2.2rem, 1.8rem + 1.8vw, 3.2rem); --step-4: clamp(3rem, 2.3rem + 3vw, 4.6rem); /* ---- Space ---- */ --space-1: 0.5rem; --space-2: 0.75rem; --space-3: 1.25rem; --space-4: 2rem; --space-5: 3.5rem; --space-6: 6rem; --radius-sm: 6px; --radius-md: 10px; --radius-lg: 18px; --ease: cubic-bezier(.16, .8, .3, 1); --container: 1180px; } /* ---- Reset ---- */ *, *::before, *::after { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; } body { margin: 0; background: var(--bg); color: var(--txt); font-family: var(--font-body); font-size: var(--step-0); line-height: 1.6; -webkit-font-smoothing: antialiased; } img, svg { display: block; max-width: 100%; } a { color: inherit; text-decoration: none; } button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; } ul { list-style: none; margin: 0; padding: 0; } /* Background: faint grid, instrument-panel feel, no gradient hero cliché */ body { background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px); background-size: 48px 48px; background-attachment: fixed; background-color: var(--bg); background-blend-mode: overlay; opacity: 1; } body::before { content: ""; position: fixed; inset: 0; background: radial-gradient(ellipse 60% 40% at 50% -10%, rgba(255,90,60,0.06), transparent 60%); pointer-events: none; z-index: 0; } /* ---- Focus ---- */ :focus-visible { outline: 2px solid var(--trace); outline-offset: 2px; border-radius: var(--radius-sm); } /* ---- Type scale ---- */ h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; margin: 0 0 var(--space-2); color: var(--txt); } h1 { font-size: var(--step-4); line-height: 1.05; letter-spacing: -0.02em; } h2 { font-size: var(--step-3); line-height: 1.1; } h3 { font-size: var(--step-2); line-height: 1.2; } h4 { font-size: var(--step-1); line-height: 1.3; } p { margin: 0 0 var(--space-3); color: var(--txt-dim); max-width: 68ch; } small, .eyebrow { font-family: var(--font-mono); font-size: var(--step--1); letter-spacing: 0.08em; text-transform: uppercase; color: var(--trace); } /* Data readouts — every live number on the site uses this */ .data, .readout { font-family: var(--font-mono); font-variant-numeric: tabular-nums; color: var(--trace); } /* ---- Layout ---- */ .container { max-width: var(--container); margin: 0 auto; padding: 0 var(--space-3); position: relative; z-index: 1; } .grid { display: grid; gap: var(--space-3); } .grid-2 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-4 { grid-template-columns: repeat(4, 1fr); } @media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } } @media (max-width: 620px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } } /* ---- Nav ---- */ .site-nav { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; padding: var(--space-2) var(--space-3); background: rgba(11, 14, 20, 0.82); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); } .site-nav .brand { font-family: var(--font-display); font-weight: 700; font-size: var(--step-1); display: flex; align-items: center; gap: var(--space-1); } .site-nav .brand .dot { color: var(--accent); } .site-nav ul { display: flex; gap: var(--space-3); align-items: center; } .site-nav a.nav-link { color: var(--txt-dim); font-size: var(--step--1); transition: color .15s var(--ease); } .site-nav a.nav-link:hover, .site-nav a.nav-link[aria-current="page"] { color: var(--txt); } /* ---- Language switcher ---- */ .lang-switch { display: flex; gap: 4px; } .lang-switch a { font-family: var(--font-mono); font-size: var(--step--1); padding: 4px 8px; border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--txt-faint); transition: all .15s var(--ease); } .lang-switch a:hover { color: var(--txt); border-color: var(--border-strong); } .lang-switch a[aria-current="true"] { color: var(--bg); background: var(--trace); border-color: var(--trace); } /* ---- Buttons ---- */ .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0.85em 1.6em; border-radius: var(--radius-md); font-weight: 600; font-size: var(--step-0); transition: transform .15s var(--ease), background .15s var(--ease), border-color .15s var(--ease); border: 1px solid transparent; } .btn:active { transform: scale(0.97); } .btn-primary { background: var(--accent); color: #fff; } .btn-primary:hover { background: #ff6f54; } .btn-ghost { background: transparent; border-color: var(--border-strong); color: var(--txt); } .btn-ghost:hover { border-color: var(--trace); color: var(--trace); } .btn:disabled { opacity: 0.4; cursor: not-allowed; } /* ---- Card ---- */ .card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-3); } .card-tool { display: flex; flex-direction: column; gap: var(--space-1); transition: border-color .2s var(--ease), transform .2s var(--ease); } .card-tool:hover { border-color: var(--border-strong); transform: translateY(-2px); } .card-tool .tag { font-family: var(--font-mono); font-size: var(--step--1); color: var(--txt-faint); text-transform: uppercase; letter-spacing: 0.06em; } .card-tool h3 { font-size: var(--step-1); } .card-tool p { font-size: var(--step--1); margin-bottom: var(--space-2); } /* ---- Signature element: signal bars (VU-meter) ---- */ .signal-bars { display: inline-flex; align-items: flex-end; gap: 3px; height: 18px; } .signal-bars span { width: 3px; background: var(--trace-dim); border-radius: 1px; height: 30%; transition: background .2s var(--ease); } .signal-bars.live span { background: var(--trace); animation: signal-pulse 1.1s ease-in-out infinite; } .signal-bars span:nth-child(1) { animation-delay: 0s; } .signal-bars span:nth-child(2) { animation-delay: .15s; } .signal-bars span:nth-child(3) { animation-delay: .3s; } .signal-bars span:nth-child(4) { animation-delay: .1s; } .signal-bars span:nth-child(5) { animation-delay: .25s; } @keyframes signal-pulse { 0%, 100% { height: 25%; } 50% { height: 100%; } } /* ---- Result panel (used by every tool) ---- */ .result-panel { text-align: center; padding: var(--space-5) var(--space-3); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); } .result-panel .big-number { font-family: var(--font-mono); font-size: var(--step-4); font-weight: 600; color: var(--trace); line-height: 1; } .result-panel .unit { font-family: var(--font-mono); color: var(--txt-faint); font-size: var(--step-0); margin-left: 6px; } .result-panel .best-score { margin-top: var(--space-2); font-family: var(--font-mono); font-size: var(--step--1); color: var(--txt-faint); } .result-panel .best-score .val { color: var(--accent); } /* Test zone — the clickable/interactive surface */ .test-zone { display: flex; align-items: center; justify-content: center; min-height: 260px; border: 2px dashed var(--border-strong); border-radius: var(--radius-lg); background: var(--surface); cursor: pointer; user-select: none; transition: border-color .15s var(--ease), background .15s var(--ease); } .test-zone:hover { border-color: var(--trace-dim); } .test-zone.active { border-style: solid; border-color: var(--accent); background: var(--accent-soft); } .test-zone .prompt { font-family: var(--font-display); font-size: var(--step-1); color: var(--txt-dim); } /* ---- FAQ ---- */ .faq details { border-bottom: 1px solid var(--border); padding: var(--space-2) 0; } .faq summary { cursor: pointer; font-family: var(--font-display); font-weight: 600; font-size: var(--step-0); list-style: none; display: flex; justify-content: space-between; align-items: center; } .faq summary::-webkit-details-marker { display: none; } .faq summary::after { content: "+"; color: var(--accent); font-size: 1.4em; } .faq details[open] summary::after { content: "\2212"; } .faq details p { margin-top: var(--space-2); } /* ---- Footer ---- */ .site-footer { border-top: 1px solid var(--border); padding: var(--space-4) 0; color: var(--txt-faint); font-size: var(--step--1); } .site-footer a { color: var(--txt-dim); } .site-footer a:hover { color: var(--trace); } /* ---- Motion respect ---- */ @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } } /* ============================================================ Homepage + article layout (aligned build) System: centered hero and section heads, full-width tool grid closed by a wide banner card, centered readable article column. ============================================================ */ .hero { padding: var(--space-6) 0 var(--space-4); position: relative; z-index: 1; text-align: center; } .hero h1 { font-size: var(--step-3); line-height: 1.14; text-wrap: balance; } .hero .lede { font-size: var(--step-1); color: var(--txt); max-width: 62ch; margin: 0 auto; } .hero-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-2); margin-top: var(--space-4); } #tools { padding-bottom: var(--space-4); } #tools .section-head { text-align: center; margin-bottom: var(--space-3); } .card.card-tool { color: inherit; } .card-tool .tag { color: var(--accent); } .card-tool .go { margin-top: auto; font-family: var(--font-mono); font-size: var(--step--1); color: var(--trace); } .card-tool:hover .go { text-decoration: underline; } /* 10 tools in a 3-col grid leaves one orphan: turn it into a wide banner card */ #tools .grid > a:last-child:nth-child(3n+1) { grid-column: 1 / -1; display: flex; flex-direction: row; align-items: center; gap: var(--space-3); } #tools .grid > a:last-child:nth-child(3n+1) h3 { margin: 0; } #tools .grid > a:last-child:nth-child(3n+1) p { flex: 1; margin: 0; } /* Article: centered column, left-aligned text inside for readability. Works for Latin, Hangul, kana and kanji line lengths alike. */ .article { max-width: 740px; margin: 0 auto; padding-bottom: var(--space-5); } .article p { max-width: none; } .article section { margin-top: var(--space-4); } .article section.faq h2 { margin-bottom: var(--space-2); } .tool-article { max-width: 740px; margin: var(--space-5) auto 0; padding-top: var(--space-4); border-top: 1px solid var(--border); } .tool-article p { max-width: none; } .tool-article h2 { margin-bottom: var(--space-3); } /* ---- Mobile ---- */ @media (max-width: 620px) { .site-nav { padding: var(--space-2); } .site-nav .brand { font-size: var(--step-0); } .lang-switch a { padding: 3px 7px; } .hero { padding-top: var(--space-5); } .hero h1 { font-size: clamp(1.7rem, 1.35rem + 2.6vw, 2.15rem); line-height: 1.2; } .hero-cta .btn { flex: 1 1 auto; min-width: 200px; } #tools .grid > a:last-child:nth-child(3n+1) { flex-direction: column; align-items: flex-start; } #tools .grid > a:last-child:nth-child(3n+1) p { margin: 0 0 var(--space-2); } } /* Article links (internal linking) */ .tool-article a, .article a { color: var(--trace); text-decoration: underline; text-underline-offset: 3px; } .tool-article a:hover, .article a:hover { color: var(--accent); } /* ============================================================ Header menu (categories + dropdowns + burger) and site footer ============================================================ */ .site-nav .nav-left { display: flex; align-items: center; gap: var(--space-2); } .nav-burger { display: none; flex-direction: column; gap: 4px; padding: 9px 8px; border: 1px solid var(--border); border-radius: var(--radius-sm); } .nav-burger span { display: block; width: 18px; height: 2px; background: var(--txt); border-radius: 1px; transition: transform .2s var(--ease), opacity .2s var(--ease); } body.nav-open .nav-burger span:nth-child(1) { transform: translateY(6px) rotate(45deg); } body.nav-open .nav-burger span:nth-child(2) { opacity: 0; } body.nav-open .nav-burger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); } .nav-menu { display: flex; align-items: center; gap: var(--space-1); } .nav-item { position: relative; } a.nav-drop-toggle { padding: 8px 10px; border-radius: var(--radius-sm); } a.nav-drop-toggle::after { content: "\25BE"; font-size: 0.7em; color: var(--txt-faint); margin-left: 5px; } .nav-drop { position: absolute; top: 100%; left: 0; min-width: 280px; background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius-md); padding: var(--space-1); box-shadow: 0 14px 36px rgba(0, 0, 0, 0.5); opacity: 0; visibility: hidden; transform: translateY(6px); z-index: 30; transition: opacity .15s var(--ease), transform .15s var(--ease), visibility .15s; } .nav-item:hover .nav-drop, .nav-item:focus-within .nav-drop { opacity: 1; visibility: visible; transform: translateY(0); } .nav-drop a { display: block; padding: 8px 10px; border-radius: var(--radius-sm); font-size: var(--step-0); color: var(--txt); } .nav-drop a:hover { background: var(--surface-2); } .nav-drop a span { display: block; color: var(--txt-faint); font-size: 0.78em; line-height: 1.35; margin-top: 2px; } @media (max-width: 900px) { .nav-burger { display: flex; } .nav-menu { position: fixed; top: 54px; left: 0; right: 0; z-index: 25; flex-direction: column; align-items: stretch; gap: 0; background: rgba(11, 14, 20, 0.98); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); padding: var(--space-2) var(--space-3) var(--space-3); max-height: calc(100vh - 54px); overflow-y: auto; opacity: 0; visibility: hidden; transform: translateY(-8px); pointer-events: none; transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s; } body.nav-open .nav-menu { opacity: 1; visibility: visible; transform: none; pointer-events: auto; } .nav-item { padding: var(--space-2) 0; border-bottom: 1px solid var(--border); } .nav-item:last-child { border-bottom: 0; } .nav-drop { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; background: transparent; padding: 0 0 0 var(--space-2); min-width: 0; } .nav-drop a { font-size: var(--step--1); } a.nav-drop-toggle { display: inline-block; } } /* ---- Footer ---- */ .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: var(--space-4); } .footer-grid h4 { font-family: var(--font-mono); font-size: var(--step--1); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--trace); margin: 0 0 var(--space-2); } .footer-grid a { display: block; color: var(--txt-dim); font-size: var(--step--1); padding: 3px 0; } .footer-grid a:hover { color: var(--txt); } .footer-brand .brand { font-family: var(--font-display); font-weight: 700; font-size: var(--step-1); display: flex; align-items: center; gap: var(--space-1); } .footer-brand .brand .dot { color: var(--accent); } .footer-brand p { margin: var(--space-2) 0 0; font-size: var(--step--1); max-width: 36ch; color: var(--txt-faint); } .footer-bottom { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-3); justify-content: space-between; align-items: center; border-top: 1px solid var(--border); margin-top: var(--space-4); padding-top: var(--space-3); font-size: var(--step--1); color: var(--txt-faint); } .footer-legal a { color: var(--txt-dim); } .footer-legal a:hover { color: var(--trace); } @media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } } @media (max-width: 620px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { justify-content: center; text-align: center; } }