/* ============================================================ Tessium Labs — stylesheet Design tokens live at the top. Theme = dark by default, overridden by prefers-color-scheme and by the manual toggle (which stamps data-theme="light"/"dark" on ). ============================================================ */ :root { --ink: #0b1210; --surface: #131b18; --surface-2: #1b2521; --paper: #edeee9; --muted: #8fa39a; --accent: #e8973d; --accent-2: #4fd8b0; --line: rgba(237, 238, 233, 0.12); --shadow: rgba(0, 0, 0, 0.35); --font-display: "IBM Plex Serif", Georgia, "Times New Roman", serif; --font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; --text-xs: 0.75rem; --text-sm: 0.875rem; --text-base: 1rem; --text-md: 1.125rem; --text-lg: 1.375rem; --text-xl: 1.875rem; --text-2xl: clamp(1.9rem, 1.5rem + 1.6vw, 2.75rem); --text-3xl: clamp(2.6rem, 1.9rem + 3vw, 4.5rem); --content-w: 1120px; --content-w-narrow: 760px; --gutter: clamp(1.25rem, 4vw, 3rem); --section-pad: clamp(4rem, 8vw, 7.5rem); --ease: cubic-bezier(0.16, 1, 0.3, 1); } @media (prefers-color-scheme: light) { :root { --ink: #f3f1ea; --surface: #ffffff; --surface-2: #eae7dc; --paper: #14201c; --muted: #5b6c64; --accent: #c96a1f; --accent-2: #1f8f76; --line: rgba(20, 32, 28, 0.12); --shadow: rgba(20, 32, 28, 0.12); } } :root[data-theme="dark"] { --ink: #0b1210; --surface: #131b18; --surface-2: #1b2521; --paper: #edeee9; --muted: #8fa39a; --accent: #e8973d; --accent-2: #4fd8b0; --line: rgba(237, 238, 233, 0.12); --shadow: rgba(0, 0, 0, 0.35); } :root[data-theme="light"] { --ink: #f3f1ea; --surface: #ffffff; --surface-2: #eae7dc; --paper: #14201c; --muted: #5b6c64; --accent: #c96a1f; --accent-2: #1f8f76; --line: rgba(20, 32, 28, 0.12); --shadow: rgba(20, 32, 28, 0.12); } /* ---------- reset ---------- */ *, *::before, *::after { box-sizing: border-box; } html { scroll-behavior: smooth; } @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; } } body { margin: 0; background: var(--ink); color: var(--paper); font-family: var(--font-body); font-size: var(--text-base); line-height: 1.55; -webkit-font-smoothing: antialiased; transition: background 0.3s var(--ease), color 0.3s var(--ease); } img { max-width: 100%; display: block; } a { color: inherit; } h1, h2, h3 { font-family: var(--font-display); font-weight: 500; margin: 0; text-wrap: balance; } p { margin: 0; } ul { margin: 0; padding: 0; list-style: none; } .skip-link { position: absolute; left: -999px; top: auto; background: var(--accent); color: var(--ink); padding: 0.75em 1.25em; z-index: 1000; font-family: var(--font-mono); font-size: var(--text-sm); } .skip-link:focus { left: 1rem; top: 1rem; } :focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; } /* ---------- layout helpers ---------- */ .section-inner { max-width: var(--content-w); margin: 0 auto; padding: 0 var(--gutter); } .section-inner-narrow { max-width: var(--content-w-narrow); } .section { padding-block: var(--section-pad); border-top: 1px solid var(--line); } .eyebrow { display: flex; align-items: center; gap: 0.6em; font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin: 0 0 1.1rem; } .eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex: none; } .section-head h2 { font-size: var(--text-2xl); line-height: 1.15; } .section-lede { margin-top: 1rem; max-width: 46ch; color: var(--muted); font-size: var(--text-md); } /* ---------- reveal-on-scroll ---------- */ [data-reveal] { opacity: 0; transform: translateY(14px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); } [data-reveal].is-visible { opacity: 1; transform: none; } @media (prefers-reduced-motion: reduce) { [data-reveal] { transform: none; } } /* ---------- buttons ---------- */ .btn { display: inline-flex; align-items: center; gap: 0.5em; font-family: var(--font-mono); font-size: var(--text-sm); letter-spacing: 0.02em; padding: 0.85em 1.5em; border-radius: 3px; border: 1px solid transparent; cursor: pointer; text-decoration: none; transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease); white-space: nowrap; } .btn-sm { padding: 0.65em 1.15em; font-size: var(--text-xs); } .btn-primary { background: var(--accent); color: var(--ink); } .btn-primary:hover { transform: translateY(-1px); filter: brightness(1.06); } .btn-ghost { background: transparent; color: var(--paper); border-color: var(--line); } .btn-ghost:hover { border-color: var(--accent); color: var(--accent); } /* ---------- header ---------- */ .site-header { position: sticky; top: 0; z-index: 100; background: color-mix(in srgb, var(--ink) 82%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color 0.3s var(--ease); } .site-header.is-scrolled { border-bottom-color: var(--line); } .header-inner { max-width: var(--content-w); margin: 0 auto; padding: 0.9rem var(--gutter); display: flex; align-items: center; gap: 2rem; } .brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--paper); margin-right: auto; } .brand-mark { display: inline-flex; color: var(--paper); } .brand-word { font-family: var(--font-mono); font-size: var(--text-sm); letter-spacing: 0.08em; text-transform: uppercase; } .brand-word em { color: var(--accent); font-style: normal; } .site-nav { display: flex; gap: 1.75rem; } .site-nav a { position: relative; text-decoration: none; color: var(--muted); font-size: var(--text-sm); padding: 0.25rem 0; transition: color 0.2s var(--ease); } .site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -2px; height: 1px; background: var(--accent); transition: right 0.25s var(--ease); } .site-nav a:hover, .site-nav a.is-active { color: var(--paper); } .site-nav a.is-active::after { right: 0; } .header-actions { display: flex; align-items: center; gap: 1rem; } .theme-toggle { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--line); background: transparent; color: var(--paper); cursor: pointer; } .theme-toggle svg { fill: none; stroke: currentColor; stroke-width: 1.6; } .theme-toggle .icon-sun circle { fill: currentColor; stroke: none; } .theme-toggle .icon-sun, .theme-toggle .icon-moon { display: none; } :root[data-theme="dark"] .theme-toggle .icon-moon { display: block; } :root[data-theme="light"] .theme-toggle .icon-sun { display: block; } @media (max-width: 720px) { .site-nav { display: none; } } /* ---------- hero ---------- */ .hero { position: relative; min-height: min(88vh, 780px); display: flex; align-items: center; overflow: hidden; } .hero-trace { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.55; } .hero-inner { position: relative; z-index: 1; max-width: var(--content-w); margin: 0 auto; padding: var(--section-pad) var(--gutter); } .hero-title { font-size: var(--text-3xl); line-height: 1.08; max-width: 16ch; } .hero-title em { font-style: italic; color: var(--accent); } .hero-sub { margin-top: 1.75rem; max-width: 52ch; font-size: var(--text-md); color: var(--muted); } .hero-actions { margin-top: 2.5rem; display: flex; gap: 1rem; flex-wrap: wrap; } /* ---------- services ---------- */ .card-grid { margin-top: 3rem; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); } .card { background: var(--ink); padding: 2rem; transition: background 0.25s var(--ease); } .card:hover { background: var(--surface); } .card h3 { font-size: var(--text-md); margin-bottom: 0.75rem; } .card p { color: var(--muted); font-size: var(--text-sm); } /* ---------- product ---------- */ .section-product { border-top: 1px solid var(--line); } .product-panel { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; display: grid; grid-template-columns: 1.1fr 0.9fr; overflow: hidden; } .product-copy { padding: clamp(2rem, 4vw, 3.5rem); display: flex; flex-direction: column; align-items: flex-start; gap: 1.25rem; } .product-copy h2 { font-size: var(--text-2xl); } .product-copy p:not(.eyebrow) { color: var(--muted); max-width: 48ch; } .product-trace { position: relative; min-height: 220px; background: var(--surface-2); } .product-trace canvas { width: 100%; height: 100%; display: block; } @media (max-width: 820px) { .product-panel { grid-template-columns: 1fr; } .product-trace { min-height: 160px; } } /* ---------- about ---------- */ .principle-list { margin-top: 2.5rem; display: flex; flex-direction: column; gap: 0; } .principle-list li { padding: 1.25rem 0; border-top: 1px solid var(--line); font-family: var(--font-mono); font-size: var(--text-sm); color: var(--paper); } .principle-list li:last-child { border-bottom: 1px solid var(--line); } /* ---------- contact ---------- */ .contact-box { margin-top: 2.5rem; display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; padding: 1.75rem 2rem; background: var(--surface); border: 1px solid var(--line); border-radius: 6px; } .contact-email { font-family: var(--font-mono); font-size: var(--text-lg); text-decoration: none; color: var(--paper); border-bottom: 1px solid var(--accent); } .contact-email:hover { color: var(--accent); } /* ---------- footer ---------- */ .site-footer { border-top: 1px solid var(--line); } .footer-inner { max-width: var(--content-w); margin: 0 auto; padding: 2rem var(--gutter); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.75rem; font-family: var(--font-mono); font-size: var(--text-xs); color: var(--muted); letter-spacing: 0.03em; }