/* ========================================================================== CHEMTECH — Design System Palette: Brand Green + Graphite (matches green molecule + black wordmark logo) Type: Libre Franklin + Inter All custom layers on top of Tailwind (Play CDN). Animations are transform/opacity only and fully respect prefers-reduced-motion. Note: the Tailwind colour key "navy" is retained for class stability but now holds dark graphite-green values — see tailwind.config in each page . ========================================================================== */ :root { /* Brand greens */ --accent: #16a34a; /* Chemtech green */ --accent-light: #22c55e; --accent-dark: #15803d; --accent-deep: #166534; /* Dark graphite-green scale (was "navy") */ --navy-950: #0a0f0c; --navy-900: #101813; --navy-800: #18241d; --navy-700: #21342a; --navy-600: #2c4736; /* Neutrals (light surface) */ --bg: #f6f9f6; --surface: #ffffff; --ink: #0b1410; --muted: #475a4f; --line: #e2e8e3; /* System */ --radius: 14px; --shadow-sm: 0 1px 2px rgba(10,15,12,.06), 0 1px 1px rgba(10,15,12,.04); --shadow-md: 0 10px 30px -12px rgba(10,24,16,.20); --shadow-lg: 0 30px 60px -20px rgba(10,24,16,.32); --ease: cubic-bezier(.22,.61,.36,1); /* z-scale */ --z-nav: 50; --z-overlay: 40; --z-top: 60; } * { -webkit-tap-highlight-color: transparent; } html { scroll-behavior: smooth; scroll-padding-top: 84px; } /* Ensure the [hidden] attribute always wins over display utilities (e.g. .flex) */ [hidden] { display: none !important; } /* Mobile: never allow accidental horizontal scroll */ body { overflow-x: hidden; } body { background: var(--bg); color: var(--ink); font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; } .font-display { font-family: 'Libre Franklin', 'Inter', sans-serif; } /* Logo wordmark — Montserrat (matches the CHEMTECH logo) */ .brand-text { font-family: 'Montserrat', 'Libre Franklin', sans-serif; letter-spacing: -.015em; } /* Selection */ ::selection { background: var(--accent); color: #04220f; } /* Accessible focus ring */ :where(a, button, input, textarea, select, [tabindex]):focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; } /* Skip link */ .skip-link { position: fixed; left: 16px; top: -120px; z-index: var(--z-top); background: var(--navy-900); color: #fff; padding: 12px 18px; border-radius: 10px; font-weight: 600; transition: top .2s var(--ease); } .skip-link:focus { top: 16px; } /* ===================== Typographic helpers ===================== */ .eyebrow { display: inline-flex; align-items: center; gap: .5rem; font-family: 'Libre Franklin', sans-serif; font-size: .8rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-dark); } .eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--accent); border-radius: 2px; } .eyebrow--light { color: var(--accent-light); } .balance { text-wrap: balance; } /* Tight chemical formulas (e.g. H₂SO₄, CH₃ONa) */ .chem { letter-spacing: -.03em; } .chem sub { font-size: .7em; } /* ===================== Buttons ===================== */ .btn { display: inline-flex; align-items: center; justify-content: center; gap: .55rem; font-weight: 600; font-size: .98rem; line-height: 1; cursor: pointer; padding: .92rem 1.5rem; border-radius: 999px; border: 1px solid transparent; transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), box-shadow .25s var(--ease), transform .2s var(--ease); will-change: transform; } .btn:active { transform: translateY(1px); } .btn-primary { background: var(--accent); color: #04220f; box-shadow: 0 8px 22px -8px rgba(22,163,74,.55); } .btn-primary:hover { background: var(--accent-light); box-shadow: 0 12px 28px -8px rgba(22,163,74,.65); } .btn-dark { background: var(--navy-900); color: #fff; } .btn-dark:hover { background: var(--navy-800); } .btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); } .btn-ghost:hover { border-color: var(--navy-800); background: #fff; } .btn-ondark { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.22); backdrop-filter: blur(6px); } .btn-ondark:hover { background: rgba(255,255,255,.16); } /* ===================== Cards ===================== */ .card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease); } .card-hover:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: #cfe0d4; } .card-accent-top { position: relative; overflow: hidden; } .card-accent-top::after { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: linear-gradient(90deg, var(--accent), var(--accent-light)); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease); } .card-accent-top:hover::after { transform: scaleX(1); } /* ===================== Hero canvas ===================== */ .hero { position: relative; overflow: hidden; background: radial-gradient(1100px 520px at 78% -8%, rgba(34,197,94,.22), transparent 60%), radial-gradient(900px 600px at 8% 12%, rgba(44,71,54,.65), transparent 55%), linear-gradient(160deg, var(--navy-950) 0%, var(--navy-900) 45%, var(--navy-800) 100%); } .hero-grid { position: absolute; inset: 0; pointer-events: none; opacity: .5; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 64px 64px; -webkit-mask-image: radial-gradient(80% 60% at 50% 30%, #000 30%, transparent 80%); mask-image: radial-gradient(80% 60% at 50% 30%, #000 30%, transparent 80%); } /* Floating molecule nodes (decorative, calm) */ .molecule { position: absolute; inset: 0; pointer-events: none; } .node { position: absolute; border-radius: 50%; } .node--ring { border: 1.5px solid rgba(34,197,94,.45); background: transparent; } .node--dot { background: radial-gradient(circle at 35% 30%, var(--accent-light), var(--accent-dark)); box-shadow: 0 0 24px rgba(22,163,74,.5); } .float-a { animation: floatA 9s ease-in-out infinite; } .float-b { animation: floatB 11s ease-in-out infinite; } .float-c { animation: floatC 13s ease-in-out infinite; } @keyframes floatA { 0%,100% { transform: translate3d(0,0,0); } 50% { transform: translate3d(0,-22px,0); } } @keyframes floatB { 0%,100% { transform: translate3d(0,0,0); } 50% { transform: translate3d(0,18px,0); } } @keyframes floatC { 0%,100% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(0,-14px,0) scale(1.06); } } /* Animated connector lines in hero svg */ .dash { stroke-dasharray: 6 8; animation: dashMove 6s linear infinite; } @keyframes dashMove { to { stroke-dashoffset: -140; } } /* ===================== Section dividers ===================== */ .diagonal-top { clip-path: polygon(0 3vw, 100% 0, 100% 100%, 0 100%); } /* Hex pattern overlay for dark panels */ .hex-overlay { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='100' viewBox='0 0 56 100'%3E%3Cpath fill='none' stroke='%2322c55e' stroke-opacity='0.12' stroke-width='1.5' d='M28 0L56 16v34L28 66 0 50V16z M28 66v34'/%3E%3C/svg%3E"); background-size: 56px 100px; } /* ===================== Marquee ===================== */ .marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); } .marquee__track { display: flex; gap: 3.5rem; width: max-content; animation: marquee 26s linear infinite; } .marquee:hover .marquee__track { animation-play-state: paused; } @keyframes marquee { to { transform: translateX(-50%); } } /* ===================== Reveal on scroll ===================== */ .reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); will-change: opacity, transform; } .reveal.is-visible { opacity: 1; transform: none; } .reveal-left { transform: translateX(-28px); } .reveal-right { transform: translateX(28px); } .reveal-scale { transform: scale(.96); } [data-delay="1"] { transition-delay: .08s; } [data-delay="2"] { transition-delay: .16s; } [data-delay="3"] { transition-delay: .24s; } [data-delay="4"] { transition-delay: .32s; } [data-delay="5"] { transition-delay: .40s; } /* ===================== Navbar ===================== */ .site-header { position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-nav); transition: background-color .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease); border-bottom: 1px solid transparent; } .site-header.scrolled { background: rgba(255,255,255,.88); backdrop-filter: saturate(180%) blur(12px); border-bottom-color: var(--line); box-shadow: 0 8px 30px -24px rgba(10,24,16,.5); } .nav-link { position: relative; font-weight: 500; font-size: .95rem; padding: .4rem 0; color: var(--navy-900); transition: color .2s var(--ease); } .nav-link::after { content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 100%; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .25s var(--ease); } .nav-link:hover { color: var(--accent-dark); } .nav-link:hover::after, .nav-link[aria-current="page"]::after { transform: scaleX(1); } .nav-link[aria-current="page"] { color: var(--accent-dark); } /* header transparent over dark hero by default */ .site-header.on-dark:not(.scrolled) .nav-link { color: #e7efe9; } .site-header.on-dark:not(.scrolled) .nav-link:hover { color: #fff; } .site-header.on-dark:not(.scrolled) .brand-text { color: #fff; } .site-header.on-dark:not(.scrolled) .hamburger span { background: #fff; } /* Mobile menu */ .mobile-menu { position: absolute; top: 100%; left: 0; right: 0; transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s; } .mobile-menu[hidden] { display: block !important; opacity: 0; transform: translateY(-8px); visibility: hidden; pointer-events: none; } .hamburger span { display: block; width: 24px; height: 2px; background: var(--navy-900); border-radius: 2px; transition: transform .25s var(--ease), opacity .2s var(--ease); } .hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); } .hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; } .hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); } /* ===================== Counter / stats ===================== */ .stat-num { font-family: 'Libre Franklin', sans-serif; font-weight: 700; letter-spacing: -.02em; line-height: 1; } /* ===================== Forms ===================== */ .field { width: 100%; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: .85rem 1rem; font-size: 1rem; color: var(--ink); transition: border-color .2s var(--ease), box-shadow .2s var(--ease); } .field::placeholder { color: #94a3b0; } .field:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px rgba(22,163,74,.15); } .field-label { font-size: .85rem; font-weight: 600; color: var(--navy-900); margin-bottom: .4rem; display: block; } .field.invalid { border-color: #e11d48; box-shadow: 0 0 0 4px rgba(225,29,72,.12); } .field-error { color: #e11d48; font-size: .8rem; margin-top: .35rem; display: none; } .field-error.show { display: block; } /* ===================== Back to top ===================== */ .to-top { position: fixed; right: 20px; bottom: 20px; z-index: var(--z-overlay); width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; background: var(--navy-900); color: #fff; box-shadow: var(--shadow-md); opacity: 0; visibility: hidden; transform: translateY(12px); transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s, background-color .2s; cursor: pointer; } .to-top.show { opacity: 1; visibility: visible; transform: none; } .to-top:hover { background: var(--accent); color: #04220f; } /* ===================== Misc utility ===================== */ .divider-grad { height: 1px; background: linear-gradient(90deg, transparent, var(--line), transparent); } .chip { display: inline-flex; align-items: center; gap: .4rem; padding: .35rem .75rem; border-radius: 999px; font-size: .8rem; font-weight: 600; } .chip-soft { background: rgba(22,163,74,.10); color: var(--accent-dark); border: 1px solid rgba(22,163,74,.25); } .link-arrow { display: inline-flex; align-items: center; gap: .35rem; font-weight: 600; color: var(--accent-dark); transition: gap .2s var(--ease); } .link-arrow:hover { gap: .6rem; } .icon-tile { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 14px; background: linear-gradient(140deg, rgba(22,163,74,.14), rgba(44,71,54,.10)); border: 1px solid rgba(22,163,74,.22); color: var(--accent-dark); } .icon-tile--dark { background: rgba(255,255,255,.06); border-color: rgba(34,197,94,.3); color: var(--accent-light); } /* ===================== Reduced motion ===================== */ @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1 !important; transform: none !important; transition: none !important; } .float-a, .float-b, .float-c, .dash, .marquee__track { animation: none !important; } .card-hover:hover { transform: none; } *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; } }