/* ============================================================
   Improv3D – Design System
   Look: "Topografie" – deep black, print layers as contour lines,
   mint (#9fd1c8) + orange (#eb6c4b) from the corporate branding.
   Fonts self-hosted: Outfit (~Arboria), Source Sans 3 (~Myriad Pro).
   ============================================================ */

@font-face { font-family: 'Outfit'; src: url('../fonts/outfit.woff2') format('woff2'); font-weight: 100 900; font-display: swap; }
@font-face { font-family: 'Source Sans 3'; src: url('../fonts/source-sans-3.woff2') format('woff2'); font-weight: 200 900; font-display: swap; }
@font-face { font-family: 'Source Sans 3'; src: url('../fonts/source-sans-3-italic.woff2') format('woff2'); font-weight: 200 900; font-style: italic; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('../fonts/jetbrains-mono.woff2') format('woff2'); font-weight: 400; font-display: swap; }

:root {
  --bg:      #0a0c0c;
  --bg-2:    #111515;
  --card:    #151a1a;
  --text:    #eef1ef;
  --soft:    #c4cbc9;
  --muted:   #8e9896;
  --line:    rgba(159, 209, 200, .14);
  --mint:    #9fd1c8;
  --orange:  #eb6c4b;
  --ink:     #0a0c0c;                     /* fixed dark text on mint/orange */
  --accent:  #9fd1c8;                     /* mint used as text/line accent */
  --card-hi: #1c2322;
  --line-strong: rgba(238, 241, 239, .3);
  --nav-bg:  rgba(10, 12, 12, .82);
  --viz-line: #9fd1c8;
  --viz-back: rgba(159, 209, 200, .13);
  --viz-solid: #eef1ef;
  --viz-solid-back: rgba(238, 241, 239, .12);
  --maxw:    1280px;
  --display: 'Outfit', system-ui, sans-serif;
  --body:    'Source Sans 3', system-ui, sans-serif;
  --mono:    'JetBrains Mono', ui-monospace, monospace;
}

/* Light theme (set via data-theme on <html>, see js/theme.js) */
[data-theme="light"] {
  --bg:      #f6f6f3;
  --bg-2:    #ecece7;
  --card:    #ffffff;
  --card-hi: #f1f4f2;
  --text:    #0d0f0f;
  --soft:    #3a3d3d;
  --muted:   #6a706e;
  --line:    rgba(13, 15, 15, .12);
  --line-strong: rgba(13, 15, 15, .3);
  --accent:  #2f7d70;
  --nav-bg:  rgba(246, 246, 243, .85);
  --viz-line: #2f7d70;
  --viz-back: rgba(47, 125, 112, .14);
  --viz-solid: #0d0f0f;
  --viz-solid-back: rgba(13, 15, 15, .12);
}
[data-theme="light"] .hero .glow { background: radial-gradient(circle, rgba(235, 108, 75, .14), transparent 65%); }
:root { color-scheme: dark; } [data-theme="light"] { color-scheme: light; }

/* Logo variants per theme */
.logo-l { display: none !important; }
[data-theme="light"] .logo-d { display: none !important; }
[data-theme="light"] .logo-l { display: block !important; }

/* Theme toggle */
.theme-toggle { flex: none; padding: 0; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--line-strong); background: transparent; color: var(--text); display: grid; place-items: center; cursor: pointer; transition: border-color .2s, color .2s; }
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .sun { display: none; }
[data-theme="light"] .theme-toggle .sun { display: block; }
[data-theme="light"] .theme-toggle .moon { display: none; }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { background: var(--bg); color: var(--text); transition: background-color .3s, color .3s; font: 400 18px/1.6 var(--body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.mono { font: 400 12px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--mint); color: var(--ink); padding: 8px 14px; z-index: 50; }
.skip:focus { left: 8px; }

/* ---------- Nav ---------- */
.nav { position: fixed; inset: 0 0 auto; z-index: 20; transition: background .3s, border-color .3s; border-bottom: 1px solid transparent; }
.nav.scrolled, .nav.solid { background: var(--nav-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-color: var(--line); }
.nav-inner { display: flex; align-items: center; height: 76px; gap: 36px; }
.nav .logo { width: 150px; color: var(--text); }
.nav .logo img { width: 100%; height: auto; }
.nav nav { margin-left: auto; display: flex; gap: 30px; align-items: center; font-size: 16px; color: var(--soft); }
.nav nav a:not(.btn):hover { color: var(--accent); }

.btn { white-space: nowrap; display: inline-flex; align-items: center; gap: 12px; font: 600 16px var(--display); padding: 14px 24px; border-radius: 999px; transition: background .25s, color .25s, border-color .25s; border: 1px solid transparent; cursor: pointer; }
.btn-mint { background: var(--mint); color: var(--ink); }
.btn-mint:hover { background: var(--text); color: var(--bg); }
.btn-line { border-color: var(--line-strong); color: var(--text); }
.btn-line:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: grid; align-items: center; padding: 120px 0 60px; overflow: hidden; }
.hero > .wrap { width: 100%; }
.hero canvas { position: absolute; right: 0; top: 54%; transform: translateY(-50%); width: min(54vw, 940px); height: min(27vw, 470px); }
.hero .glow { position: absolute; right: 14vw; top: 36%; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(235, 108, 75, .2), transparent 65%); filter: blur(10px); pointer-events: none; }
.hero-copy { position: relative; z-index: 2; max-width: 760px; }
.hero h1 { font: 700 clamp(52px, 8.4vw, 132px)/.92 var(--display); letter-spacing: -.04em; }
.hero h1 .line { display: block; overflow: hidden; padding-bottom: .2em; margin-bottom: -.2em; } /* room for descenders (j, g) */
.hero h1 .line > span { display: block; animation: print 1.1s cubic-bezier(.2, .8, .2, 1) both; }
.hero h1 .line:nth-child(2) > span { animation-delay: .15s; }
.hero h1 em { font-style: normal; color: var(--accent); }
@keyframes print { from { transform: translateY(110%); } to { transform: none; } }
.hero .lead { font-size: 21px; color: var(--soft); max-width: 28em; margin: 32px 0 40px; }
.hero .cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero .hud { position: absolute; right: 32px; bottom: 36px; z-index: 2; text-align: right; display: grid; gap: 4px; }
.hero .hud b { color: var(--orange); font-weight: 400; }
.scroll-hint { position: absolute; left: 32px; bottom: 36px; z-index: 2; display: flex; align-items: center; gap: 10px; }
.scroll-hint i { width: 1px; height: 40px; background: linear-gradient(var(--mint), transparent); }

/* ---------- Facts strip (static) ---------- */
.facts-strip { border-block: 1px solid var(--line); }
.facts-row { display: grid; grid-template-columns: repeat(4, 1fr); column-gap: 16px; }
.facts-row > div { padding: 26px 24px; border-left: 1px solid var(--line); }
.facts-row > div:first-child { border-left: 0; padding-left: 0; }
.facts-row b { display: block; font: 700 30px var(--display); letter-spacing: -.02em; }
.facts-row span { font-size: 15px; color: var(--muted); }

/* ---------- Sections ---------- */
section { padding: 140px 0; position: relative; }
.kicker { display: inline-flex; align-items: center; gap: 12px; margin-bottom: 26px; }
.kicker::before { content: ''; width: 28px; height: 1px; background: var(--accent); }
h2 { font: 700 clamp(40px, 5.6vw, 84px)/.98 var(--display); letter-spacing: -.035em; max-width: 14em; }
h2 em { font-style: normal; color: var(--accent); }
.pt0 { padding-top: 0; }
.intro { color: var(--soft); font-size: 20px; max-width: 36em; margin-top: 28px; }

/* Services as rows */
.rows { margin-top: 72px; border-top: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 120px 1.1fr 1fr 40px; gap: 32px; align-items: start; padding: 40px 0; border-bottom: 1px solid var(--line); transition: background .3s, padding .3s; }
.row:hover { background: linear-gradient(90deg, rgba(159, 209, 200, .06), transparent); padding-left: 16px; }
.row .n { font: 300 64px/1 var(--display); color: var(--accent); }
.row h3 { font: 600 36px/1.1 var(--display); letter-spacing: -.02em; }
.row p { color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chips span { font: 400 13px var(--mono); border: 1px solid var(--line); padding: 6px 12px; border-radius: 999px; color: var(--soft); }
.row .arrow { width: 28px; color: var(--orange); transform: rotate(90deg); margin-top: 14px; }
.row .arrow svg { width: 100%; height: auto; }

/* Case */
.case { background: var(--bg-2); }
.case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.case .sticky { position: sticky; top: 120px; align-self: start; }
.case blockquote { margin-top: 48px; padding-left: 24px; border-left: 2px solid var(--orange); font: 500 26px/1.3 var(--display); }
.case blockquote cite { display: block; margin-top: 12px; font: 400 15px var(--body); color: var(--muted); font-style: normal; }
.cards { display: grid; gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 32px; }
.card .mono { color: var(--accent); }
.card h3 { font: 600 24px var(--display); margin: 10px 0 8px; }
.card p { color: var(--muted); }
.case-viz { padding: 0; aspect-ratio: 16 / 10; position: relative; overflow: hidden; }
.case-viz canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.case-viz .mono { position: absolute; left: 24px; bottom: 20px; }
.kpi-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.kpi-grid .card b { font: 700 64px/1 var(--display); letter-spacing: -.03em; display: block; margin-bottom: 8px; }
.kpi-grid .card b small { font-size: 22px; color: var(--orange); margin-left: 4px; }

/* Process: layer stack */
.stack { margin-top: 80px; display: grid; gap: 10px; list-style: none; }
.layer { display: grid; grid-template-columns: 80px 260px 1fr auto; gap: 32px; align-items: center; padding: 26px 32px; border-radius: 16px; background: var(--card); border: 1px solid var(--line); }
.layer:nth-child(2) { margin-right: 6%; } .layer:nth-child(3) { margin-right: 12%; } .layer:nth-child(4) { margin-right: 18%; } .layer:nth-child(5) { margin-right: 24%; }
.layer .z { font: 400 13px var(--mono); color: var(--orange); }
.layer h3 { font: 600 26px var(--display); }
.layer p { color: var(--muted); font-size: 17px; }
.layer .badge { font: 400 12px var(--mono); color: var(--ink); background: var(--mint); padding: 5px 10px; border-radius: 999px; white-space: nowrap; }

/* Swiss */
.swiss-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 80px; align-items: center; }
.swiss-mark { aspect-ratio: 1; border-radius: 28px; background: radial-gradient(circle at 30% 30%, var(--card-hi), var(--card)); border: 1px solid var(--line); display: grid; place-items: center; position: relative; overflow: hidden; }
.swiss-mark .ring { position: absolute; border: 1px solid var(--line); border-radius: 50%; animation: pulse 6s ease-in-out infinite; }
.swiss-mark .r1 { width: 40%; height: 40%; } .swiss-mark .r2 { width: 60%; height: 60%; } .swiss-mark .r3 { width: 80%; height: 80%; } .swiss-mark .r4 { width: 100%; height: 100%; }
.swiss-mark .ring:nth-child(2) { animation-delay: .6s; } .swiss-mark .ring:nth-child(3) { animation-delay: 1.2s; } .swiss-mark .ring:nth-child(4) { animation-delay: 1.8s; }
@keyframes pulse { 50% { border-color: rgba(159, 209, 200, .32); } }
.swiss-mark .label { position: relative; text-align: center; }
.swiss-mark .label b { display: block; font: 700 clamp(36px, 4.6vw, 56px)/1 var(--display); letter-spacing: -.03em; margin-top: 8px; }
.swiss-mark .label b em { color: var(--orange); font-style: normal; }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 40px; margin-top: 40px; }
.facts div { border-top: 1px solid var(--line); padding-top: 16px; }
.facts b { font: 600 20px var(--display); display: block; margin-bottom: 4px; }
.facts span { color: var(--muted); font-size: 16px; }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 80px; align-items: center; }
.portrait { aspect-ratio: 4 / 5; border-radius: 28px; overflow: hidden; background: var(--card); border: 1px solid var(--line); position: relative; display: grid; place-items: center; }
.portrait img { width: 100%; height: 100%; object-fit: cover; }
.portrait canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.portrait .ph { position: absolute; left: 28px; bottom: 28px; width: 72px; }
.portrait .ph img { width: 100%; height: auto; }
.about blockquote { font: 600 clamp(30px, 3.4vw, 46px)/1.12 var(--display); letter-spacing: -.02em; margin-bottom: 28px; }
.about blockquote em { color: var(--accent); font-style: normal; }
.about p { color: var(--soft); font-size: 20px; max-width: 32em; }
.about .who { margin-top: 28px; display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }

/* FAQ */
.faq { margin-top: 64px; max-width: 900px; }
.faq details { border-top: 1px solid var(--line); padding: 24px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { font: 600 22px var(--display); cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 24px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--orange); font-weight: 400; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--muted); margin-top: 12px; max-width: 46em; }

/* Contact */
.contact { padding-top: 0; }
.contact-block { border-radius: 32px; background: var(--orange); color: var(--ink); padding: 88px 64px; display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; position: relative; overflow: hidden; }
.contact-block h2 { max-width: 9em; }
.contact-block .intro, .contact-block .kicker.dark { color: #2a1610; }
.contact-block .kicker.dark::before { background: #2a1610; }
.contact-block .direct { display: grid; gap: 6px; font: 600 20px var(--display); margin-top: 36px; }
.contact-block .direct a { justify-self: start; border-bottom: 1.5px solid rgba(10, 12, 12, .35); }
.contact-block .direct a:hover { border-color: var(--ink); }
.form { background: var(--bg); color: var(--text); border-radius: 24px; padding: 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-content: start; }
.form .full { grid-column: 1 / -1; }
.form label { font: 400 12px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); display: grid; gap: 6px; }
.form input, .form textarea { font: 400 17px var(--body); background: var(--card); border: 1px solid var(--line); border-radius: 12px; color: var(--text); padding: 12px 14px; outline: none; width: 100%; }
.form textarea { resize: vertical; min-height: 120px; }
.form input:focus, .form textarea:focus { border-color: var(--mint); }
.form .hp { position: absolute; left: -9999px; }
.drop { border: 1px dashed rgba(159, 209, 200, .4); border-radius: 12px; padding: 22px; text-align: center; color: var(--muted); font-size: 15px; cursor: pointer; transition: background .2s, border-color .2s; }
.drop.over, .drop:hover { background: rgba(159, 209, 200, .06); border-color: var(--mint); }
.form .drop { display: block; font: 400 15px/1.5 var(--body); text-transform: none; letter-spacing: 0; }
.drop b { color: var(--accent); font-weight: 600; }
.drop small { font-size: 13px; }
.drop input { display: none; }
.files { font: 400 13px var(--mono); color: var(--soft); display: grid; gap: 4px; margin-top: 10px; text-align: left; }
.form .consent { font: 400 14px var(--body); text-transform: none; letter-spacing: 0; color: var(--muted); }
.form .consent input { width: auto; margin-right: 8px; vertical-align: -2px; accent-color: var(--mint); }
.form .consent a { color: var(--accent); text-decoration: underline; }
.form .actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.form .status { font-size: 15px; color: var(--soft); }
.form .status.ok { color: var(--accent); } .form .status.err { color: var(--orange); }

/* ---------- Footer ---------- */
footer { padding: 72px 0 40px; color: var(--muted); font-size: 15px; }
.foot { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px; }
.foot .logo { width: 220px; color: var(--text); display: block; margin-bottom: 18px; }
.foot .logo img { width: 100%; height: auto; }
.foot h4 { font: 400 12px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-bottom: 12px; }
.foot a { display: block; padding: 3px 0; }
.foot a:hover { color: var(--text); }
.legal { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 24px; display: flex; justify-content: space-between; gap: 16px; }
.legal a { display: inline; }

/* ---------- Legal pages ---------- */
.page { padding: 160px 0 80px; }
.page h1 { font: 700 clamp(44px, 6vw, 80px)/1 var(--display); letter-spacing: -.035em; margin-bottom: 48px; }
.prose { max-width: 760px; color: var(--soft); }
.prose h2 { font-size: 28px; letter-spacing: -.01em; margin: 48px 0 12px; color: var(--text); }
.prose p, .prose ul { margin-bottom: 14px; }
.prose ul { padding-left: 20px; }
.prose a { color: var(--accent); text-decoration: underline; }
.prose .stand { margin-top: 32px; }
.prose .todo { background: rgba(235, 108, 75, .15); color: var(--orange); padding: 0 4px; border-radius: 4px; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s, transform .9s cubic-bezier(.2, .8, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero h1 .line > span, .swiss-mark .ring { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .wrap { padding: 0 16px; }
  .nav nav a:not(.btn) { display: none; }
  .nav-inner { gap: 12px; }
  .nav .logo { width: 124px; }
  .nav nav { gap: 10px; }
  .nav .btn { padding: 10px 16px; font-size: 15px; }
  .theme-toggle { width: 38px; height: 38px; }
  .hero { padding: 100px 0 40px; align-items: start; }
  .hero canvas { position: relative; right: auto; top: auto; transform: none; width: 100%; height: 52vw; margin-top: 24px; }
  .hero .glow { right: 10vw; top: auto; bottom: 10%; width: 260px; height: 260px; }
  .hero .hud, .scroll-hint { display: none; }
  .row { grid-template-columns: 1fr; gap: 12px; }
  .row .n { font-size: 40px; } .row .arrow { display: none; }
  .case-grid, .swiss-grid, .about-grid, .foot, .contact-block { grid-template-columns: 1fr; gap: 48px; }
  .case .sticky { position: static; }
  .layer { grid-template-columns: 1fr; gap: 6px; margin-right: 0 !important; padding: 22px; }
  .layer .badge { justify-self: start; }
  .contact-block { padding: 56px 20px 20px; border-radius: 24px; }
  .form { grid-template-columns: 1fr; padding: 22px; }
  .facts { grid-template-columns: 1fr; }
  .facts-row { grid-template-columns: 1fr 1fr; }
  .facts-row > div { padding: 18px 0; border-left: 0; }
  .portrait { aspect-ratio: 1; }
  .kpi-grid .card b { font-size: 48px; }
  section { padding: 90px 0; }
  .legal { flex-direction: column; }
}

/* Touch devices: no sticky hover states */
@media (hover: none) {
  .btn-line:hover { border-color: var(--line-strong); color: var(--text); }
  .row:hover { background: none; padding-left: 0; }
}