/* Kenvidis — marketing site. Brand system per "Kenvidis Brand Kit July 18". */

:root {
  /* Core palette */
  --forest: #1A3B3A;   /* primary ink, headlines, dark sections */
  --spruce: #2E5751;   /* secondary body */
  --sage: #5F8A86;     /* labels, quiet detail */
  --signal: #6BA3BE;   /* the one accent — reserved for "AI" */
  --ember: #D96A34;    /* bold accent, used rarely */
  --paper: #FBFAF5;
  --cream: #EFEDE4;
  --line: #D8D4C8;
  --mute: #8A897E;

  --serif: 'Fraunces', 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --mono: 'IBM Plex Mono', 'SF Mono', Menlo, Consolas, monospace;

  --maxw: 1080px;
  --pad: clamp(1.5rem, 5vw, 4rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html, body { height: 100%; }

body {
  background: var(--paper);
  color: var(--forest);
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.125rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection { background: rgba(107, 163, 190, 0.25); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); }

/* ---- Typography primitives ---- */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sage);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: '';
  width: 1.5rem;
  height: 1px;
  background: var(--ember);
  display: inline-block;
}
.eyebrow.plain::before { display: none; }

h1, h2, h3 { font-weight: 500; color: var(--forest); letter-spacing: -0.02em; line-height: 1.08; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); }
h3 { font-size: 1.3rem; letter-spacing: -0.01em; line-height: 1.25; }
p { color: var(--spruce); }
em, .spark { font-style: italic; color: var(--signal); font-weight: 500; }
strong { font-weight: 600; color: var(--forest); }

a { color: inherit; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--paper);
  background: var(--forest);
  padding: 1rem 1.6rem;
  border-radius: 4px;
  border: 1px solid var(--forest);
  cursor: pointer;
  transition: background 0.3s var(--ease), transform 0.2s var(--ease), box-shadow 0.3s var(--ease);
  will-change: transform;
}
.btn:hover { background: var(--spruce); box-shadow: 0 10px 30px rgba(26, 59, 58, 0.18); }
.btn .arrow { transition: transform 0.3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn.ghost {
  background: transparent;
  color: var(--forest);
  border-color: var(--line);
}
.btn.ghost:hover { background: transparent; border-color: var(--sage); box-shadow: none; }
.btn.on-dark { background: var(--paper); color: var(--forest); border-color: var(--paper); }
.btn.on-dark:hover { background: var(--cream); border-color: var(--cream); }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  transition: padding 0.3s var(--ease), background 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; padding-block: 1.5rem; transition: padding-block 0.3s var(--ease); }
.site-header.scrolled { background: rgba(251, 250, 245, 0.82); backdrop-filter: saturate(140%) blur(12px); border-bottom-color: var(--line); }
.site-header.scrolled .container { padding-block: 0.85rem; }
.mark { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; }
.mark img { width: 2.4rem; height: 2.4rem; display: block; transition: width 0.3s var(--ease), height 0.3s var(--ease); }
.site-header.scrolled .mark img { width: 2rem; height: 2rem; }
.mark span { font-size: 1.35rem; font-weight: 500; color: var(--forest); letter-spacing: -0.01em; }
.est { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--sage); display: flex; align-items: center; gap: 0.5rem; }
.est::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--ember); }

/* ---- Sections ---- */
main { position: relative; z-index: 1; }
.section { padding-block: clamp(4.5rem, 10vw, 8rem); border-top: 1px solid var(--line); }
.section-lead { max-width: 46ch; }
.section-head { margin-bottom: 3rem; }
.section-head .eyebrow { margin-bottom: 1.5rem; }
.section-head h2 { max-width: 18ch; }

/* ---- Hero ---- */
.hero { position: relative; padding-block: clamp(4rem, 12vw, 9rem) clamp(4.5rem, 10vw, 7rem); overflow: hidden; }
.hero-glow {
  position: absolute;
  top: -30%; left: 50%;
  width: 90vw; max-width: 1100px; height: 80vh;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(95, 138, 134, 0.20) 0%, rgba(107, 163, 190, 0.10) 35%, transparent 68%);
  pointer-events: none;
  z-index: 0;
  animation: drift 18s ease-in-out infinite alternate;
}
.hero .container { position: relative; z-index: 1; }
.hero .eyebrow { margin-bottom: 1.75rem; }
.hero h1 {
  font-size: clamp(2.6rem, 7vw, 5.25rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 500;
  max-width: 16ch;
  margin-bottom: 1.75rem;
}
.hero .lede { font-size: clamp(1.15rem, 1.7vw, 1.4rem); line-height: 1.55; max-width: 54ch; color: var(--spruce); margin-bottom: 2.5rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }

/* ---- 001 Problems ---- */
.problem-lead { font-size: clamp(1.5rem, 3vw, 2.1rem); line-height: 1.25; letter-spacing: -0.015em; color: var(--forest); max-width: 20ch; margin-bottom: 1.5rem; }
.problem-support { max-width: 54ch; margin-bottom: 2.75rem; }
.problem-list { list-style: none; display: grid; gap: 0; border-top: 1px solid var(--line); }
.problem-list li {
  display: flex; align-items: baseline; gap: 1.25rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  font-style: italic;
  color: var(--forest);
}
.problem-list li .num { font-family: var(--mono); font-size: 0.72rem; font-style: normal; letter-spacing: 0.1em; color: var(--sage); flex-shrink: 0; padding-top: 0.4rem; }

/* ---- 002 How We Work ---- */
.work-intro { font-size: clamp(1.4rem, 2.6vw, 2rem); line-height: 1.3; letter-spacing: -0.015em; max-width: 22ch; margin-bottom: 3.5rem; }
.steps { position: relative; display: grid; gap: 2.75rem; padding-left: 2.5rem; }
.steps-line { position: absolute; left: 0.35rem; top: 0.5rem; bottom: 0.5rem; width: 2px; background: var(--line); overflow: hidden; }
.steps-line::after { content: ''; position: absolute; inset: 0; background: linear-gradient(var(--sage), var(--signal)); transform: scaleY(0); transform-origin: top; transition: transform 1.4s var(--ease); }
.steps.in .steps-line::after { transform: scaleY(1); }
.step { position: relative; }
.step::before {
  content: ''; position: absolute; left: calc(-2.5rem + 0.05rem); top: 0.55rem;
  width: 0.66rem; height: 0.66rem; border-radius: 50%;
  background: var(--paper); border: 2px solid var(--sage);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.step.in::before { background: var(--ember); border-color: var(--ember); }
.step .step-num { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--sage); margin-bottom: 0.5rem; }
.step h3 { margin-bottom: 0.6rem; }
.step p { max-width: 60ch; }

/* ---- 003 Why (three points) ---- */
.points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.point { padding-top: 1.5rem; border-top: 2px solid var(--forest); }
.point h3 { margin-bottom: 0.7rem; }
.point p { font-size: 1.05rem; }
@media (max-width: 780px) { .points { grid-template-columns: 1fr; gap: 2.25rem; } }

/* ---- 004 Selected Work ---- */
.work-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.work-card {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 2.25rem;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.work-card:hover { transform: translateY(-6px); border-color: var(--sage); box-shadow: 0 18px 44px rgba(26, 59, 58, 0.10); }
.work-card .tag { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--sage); margin-bottom: 1.25rem; }
.work-card h3 { font-size: 1.5rem; margin-bottom: 1rem; }
.work-card p { color: var(--spruce); }
.work-close { margin-top: 2.5rem; font-style: italic; color: var(--sage); }
@media (max-width: 780px) { .work-grid { grid-template-columns: 1fr; } }

/* ---- 005 Powered By ---- */
.powered { text-align: left; }
.marquee { overflow: hidden; -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent); margin-bottom: 1.5rem; }
.marquee-track { display: flex; width: max-content; gap: 2.75rem; animation: marquee 42s linear infinite; font-family: var(--mono); font-size: 0.95rem; letter-spacing: 0.02em; color: var(--spruce); white-space: nowrap; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { display: inline-flex; align-items: center; gap: 2.75rem; }
.marquee-track span::after { content: '·'; color: var(--line); }
.powered-note { font-style: italic; color: var(--sage); }

/* ---- 006 About ---- */
.about blockquote { font-size: clamp(1.5rem, 3.2vw, 2.5rem); line-height: 1.3; letter-spacing: -0.015em; font-weight: 500; color: var(--forest); max-width: 26ch; }
.about blockquote .spark { color: var(--signal); }
.about .attribution { margin-top: 1.75rem; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--sage); }
.about .rule { width: 2.5rem; height: 2px; background: var(--ember); margin-bottom: 2rem; }

/* ---- 007 Get in touch (the single dark close) ---- */
.contact { background: var(--forest); border-top: none; color: var(--cream); }
.contact h2 { color: var(--paper); font-size: clamp(2.2rem, 5vw, 3.4rem); margin-bottom: 1rem; }
.contact .lede { color: rgba(239, 237, 228, 0.82); font-size: clamp(1.15rem, 1.8vw, 1.35rem); max-width: 40ch; margin-bottom: 2.5rem; }
.contact .eyebrow { color: var(--sage); margin-bottom: 1.5rem; }
.contact-links { margin-top: 2.5rem; display: flex; flex-wrap: wrap; gap: 0.4rem 2rem; font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.03em; }
.contact-links a { color: rgba(239, 237, 228, 0.78); text-decoration: none; border-bottom: 1px solid transparent; padding-bottom: 2px; transition: color 0.25s, border-color 0.25s; }
.contact-links a:hover { color: var(--paper); border-bottom-color: var(--signal); }

/* ---- Footer ---- */
.site-footer { background: var(--forest); color: rgba(239,237,228,0.6); padding-block: 2rem; }
.site-footer .container { display: flex; justify-content: space-between; align-items: center; gap: 1rem; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; }
@media (max-width: 560px) { .site-footer .container { flex-direction: column; gap: 0.5rem; text-align: center; } }

/* ---- Reveal animation (progressive enhancement) ----
   Content is visible by default; only once JS adds .motion to <html> do the
   reveals start hidden and animate in. So a JS failure never hides the page. */
.reveal { transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
html.motion .reveal { opacity: 0; transform: translateY(26px); }
html.motion .reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* Hero load stagger (runs on load, not scroll) */
.hero .stagger { opacity: 0; transform: translateY(24px); animation: rise 1s var(--ease) forwards; }
.hero .stagger.d1 { animation-delay: 0.15s; }
.hero .stagger.d2 { animation-delay: 0.35s; }
.hero .stagger.d3 { animation-delay: 0.55s; }
.hero .stagger.d4 { animation-delay: 0.75s; }

@keyframes rise { to { opacity: 1; transform: none; } }
@keyframes drift { from { transform: translateX(-50%) translateY(0) scale(1); } to { transform: translateX(-50%) translateY(24px) scale(1.06); } }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---- Header path switcher ---- */
.path-switch { display: flex; gap: 0.2rem; font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.08em; text-transform: uppercase; }
.path-switch a { text-decoration: none; color: var(--mute); padding: 0.4rem 0.7rem; border-radius: 20px; transition: color 0.2s, background 0.2s; white-space: nowrap; }
.path-switch a:hover { color: var(--forest); }
.path-switch a.active { color: var(--forest); background: var(--cream); }
@media (max-width: 760px) { .path-switch { display: none; } }

/* ---- Chooser hero (interactive landing) ---- */
.chooser-hero { position: relative; overflow: hidden; text-align: center; padding-block: clamp(2.5rem, 7vw, 5rem) clamp(2.5rem, 6vw, 4rem); }
.chooser-hero .eyebrow { justify-content: center; margin-bottom: 1.5rem; }
.chooser-hero h1 { font-size: clamp(2.1rem, 5vw, 3.9rem); line-height: 1.05; letter-spacing: -0.03em; max-width: 20ch; margin: 0 auto 1.15rem; }
.chooser-prompt { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--sage); margin-bottom: 1.25rem; }
.chooser { max-width: 600px; margin: 0 auto; }
.chooser svg { width: 100%; height: auto; display: block; overflow: visible; }
.chooser a { cursor: pointer; -webkit-tap-highlight-color: transparent; }
.chooser a:focus-visible { outline: none; }
.chooser a:focus-visible .venn-circle, .chooser a:focus-visible .orbit-dot { stroke: var(--ember); stroke-width: 3; }

/* Venn */
.venn-circle { mix-blend-mode: multiply; transition: fill-opacity 0.4s var(--ease); }
.chooser a:hover .venn-circle { fill-opacity: 0.74; }
.venn-label { font-family: var(--serif); font-weight: 500; fill: var(--forest); font-size: 18px; letter-spacing: -0.01em; text-anchor: middle; transition: fill 0.3s var(--ease); }
.chooser a:hover .venn-label { fill: var(--paper); font-weight: 600; }

/* Orbit */
.orbit-line { stroke: var(--line); stroke-width: 1.5; transition: stroke 0.3s var(--ease); }
.orbit-dot { fill: var(--cream); stroke: var(--sage); stroke-width: 2; transition: stroke 0.3s var(--ease), fill 0.3s var(--ease); }
.chooser a:hover .orbit-dot { stroke: var(--ember); fill: var(--paper); }
.chooser a:hover .orbit-line { stroke: var(--sage); }
.orbit-label { font-family: var(--serif); font-weight: 500; fill: var(--forest); font-size: 16px; letter-spacing: -0.01em; text-anchor: middle; transition: fill 0.3s var(--ease); }
.chooser a:hover .orbit-label { fill: var(--signal); }

/* Center KV mark (shared) */
.kv-tile { fill: var(--paper); stroke: var(--forest); stroke-width: 1.5; }
.kv-text { font-family: var(--serif); font-weight: 600; fill: var(--forest); text-anchor: middle; font-size: 26px; }
.chooser-cap { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--mute); margin-top: 1rem; }

/* ---- Sub-page hero (build / solutions) ---- */
.subhero { padding-block: clamp(3.5rem, 9vw, 7rem) clamp(2.5rem, 6vw, 4rem); }
.subhero .eyebrow { margin-bottom: 1.5rem; }
.subhero h1 { font-size: clamp(2.3rem, 5.5vw, 4rem); line-height: 1.05; letter-spacing: -0.03em; max-width: 17ch; margin-bottom: 1.5rem; }
.subhero .lede { font-size: clamp(1.15rem, 1.7vw, 1.35rem); line-height: 1.55; max-width: 52ch; color: var(--spruce); margin-bottom: 2.25rem; }

/* ---- Ready-Made solutions grid ---- */
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.15rem; }
@media (max-width: 780px) { .solutions-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px) { .solutions-grid { grid-template-columns: 1fr; } }
.solution-tile { position: relative; aspect-ratio: 5 / 4; background: var(--cream); border: 1px solid var(--line); border-radius: 10px; padding: 1.35rem; display: flex; align-items: center; justify-content: center; text-align: center; transition: border-color 0.3s var(--ease), transform 0.3s var(--ease); }
.solution-tile:hover { border-color: var(--sage); transform: translateY(-4px); }
.solution-tile .st-soon { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--sage); border: 1px solid var(--line); border-radius: 20px; padding: 0.4rem 0.85rem; }

/* ---- Cross-nav "other paths" ---- */
.other-paths { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) { .other-paths { grid-template-columns: 1fr; } }
.other-path { display: block; text-decoration: none; border: 1px solid var(--line); border-radius: 10px; padding: 1.6rem 1.75rem; transition: border-color 0.3s var(--ease), transform 0.3s var(--ease); }
.other-path:hover { border-color: var(--sage); transform: translateY(-3px); }
.other-path .op-label { font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--sage); margin-bottom: 0.5rem; }
.other-path .op-title { font-family: var(--serif); font-size: 1.3rem; color: var(--forest); }
.other-path .op-title .op-arrow { color: var(--ember); transition: transform 0.3s var(--ease); display: inline-block; }
.other-path:hover .op-title .op-arrow { transform: translateX(4px); }

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .hero .stagger { opacity: 1 !important; transform: none !important; animation: none !important; transition: none !important; }
  .hero-glow, .marquee-track { animation: none !important; }
  .steps-line::after { transform: scaleY(1) !important; transition: none !important; }
  * { scroll-behavior: auto !important; }
}