/* Iskaria — brand system (from brand-one-pager.md + logo concept "Systems Mark") */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;700&family=Manrope:wght@400;500;600;700&display=swap');

:root {
  --ink: oklch(20% 0.02 60);
  --ink-muted: oklch(45% 0.02 60);
  --bg: oklch(97% 0.01 80);
  --surface: oklch(100% 0 0);
  --dark-bg: oklch(15% 0.02 60);
  --dark-ink: oklch(97% 0.01 80);
  --accent: oklch(70% 0.19 50);
  --decline: oklch(55% 0.02 60);
  --line: oklch(88% 0.01 80);

  --container: 1120px;
  --radius: 4px;
  --ease: cubic-bezier(.16,.84,.44,1);
  --ease-pop: cubic-bezier(.34,1.56,.64,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  opacity: 0;
}
body.is-ready { opacity: 1; transition: opacity .5s ease; }

/* film grain — depth without another gradient */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

h1, h2, h3, .display {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

img, svg { display: block; max-width: 100%; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.muted { color: var(--ink-muted); }

/* Header */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in oklch, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
header.site-header .bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.02em;
}
.logo svg, .logo .logo-mark { width: 30px; height: 30px; transition: transform .4s var(--ease-pop); }
.logo:hover svg, .logo:hover .logo-mark { transform: rotate(-8deg) scale(1.08); }
.logo:hover { color: var(--ink); }

nav.primary-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
nav.primary-nav a:not(.btn) {
  position: relative;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-muted);
  padding-bottom: 3px;
}
nav.primary-nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .3s var(--ease);
}
nav.primary-nav a:not(.btn):hover,
nav.primary-nav a.active { color: var(--ink); }
nav.primary-nav a:not(.btn):hover::after,
nav.primary-nav a.active::after { transform: scaleX(1); transform-origin: left; }
nav.primary-nav .btn { font-size: 14px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); display: block; transition: transform .3s var(--ease), opacity .3s ease; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}
.btn .arrow { width: 14px; height: 14px; transition: transform .3s var(--ease-pop); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: var(--accent); color: var(--ink); transform: translateY(-2px); }
.btn-outline { border-color: var(--line); color: var(--ink); }
.btn-outline:hover { border-color: var(--ink); color: var(--ink); transform: translateY(-2px); }

/* Sections */
section { padding: 96px 0; }
section.tight { padding: 56px 0; }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(28px, 4vw, 36px); margin-top: 10px; }

/* Reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.grid-4 .reveal:nth-child(2) { transition-delay: .08s; }
.grid-4 .reveal:nth-child(3) { transition-delay: .16s; }
.grid-4 .reveal:nth-child(4) { transition-delay: .24s; }

/* Hero */
.hero { position: relative; padding: 96px 0 72px; overflow: hidden; }
.hero-grid { position: relative; z-index: 2; }
.hero-title { font-size: clamp(26px, 4.4vw, 46px); max-width: 780px; margin-top: 28px; }
.line-wrap { display: block; overflow: hidden; }
.line-wrap .line {
  display: block;
  transform: translateY(112%);
  opacity: 0;
  animation: lineUp .9s var(--ease) forwards;
}
@keyframes lineUp { to { transform: translateY(0); opacity: 1; } }

.fade-up { opacity: 0; transform: translateY(16px); animation: fadeUp .8s var(--ease) forwards; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }

.hero .lede { max-width: 620px; font-size: 19px; color: var(--ink-muted); margin-top: 20px; }
.hero .actions { display: flex; gap: 14px; margin-top: 36px; }

/* Liquid-fill wordmark — the hero's centerpiece */
.liquid-word {
  position: relative;
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(46px, 13vw, 208px);
  letter-spacing: -0.02em;
  line-height: 1;
  white-space: nowrap;
}
.liquid-word span { display: block; }
.liquid-word .base {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--line);
}
.liquid-word .fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--accent) 0%, var(--ink) 88%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transform-origin: bottom;
  clip-path: inset(100% 0 0 0);
  animation: liquidFill 1.8s var(--ease) .3s forwards;
}
@keyframes liquidFill {
  0%   { clip-path: inset(100% 0 0 0); transform: scaleY(.96); }
  70%  { transform: scaleY(1.015); }
  100% { clip-path: inset(0% 0 0 0); transform: scaleY(1); }
}
.liquid-word .shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 30%, var(--dark-ink) 48%, transparent 66%);
  background-size: 250% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0;
  animation: shineSweep 1.4s ease 2.1s forwards;
}
@keyframes shineSweep {
  0%   { background-position: -120% 0; opacity: 0; }
  15%  { opacity: .9; }
  85%  { opacity: .9; }
  100% { background-position: 120% 0; opacity: 0; }
}

.scroll-cue {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 64px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  opacity: 0;
  animation: fadeUp .8s var(--ease) 2.6s forwards;
}
.scroll-cue .stem { width: 1px; height: 34px; background: var(--line); position: relative; overflow: hidden; }
.scroll-cue .stem::after {
  content: "";
  position: absolute;
  left: 0; top: -100%;
  width: 100%; height: 100%;
  background: var(--accent);
  animation: cueDrop 1.8s ease-in-out infinite;
}
@keyframes cueDrop { 0% { top: -100%; } 60% { top: 100%; } 100% { top: 100%; } }

@media (max-width: 640px) {
  .liquid-word { letter-spacing: -0.01em; }
}

/* Proof strip */
.proof-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 32px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
  align-items: center;
}
.proof-strip .proof-item {
  font-size: 14px;
  color: var(--ink-muted);
}
.proof-strip .proof-item strong {
  color: var(--ink);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 18px;
  letter-spacing: -0.01em;
  margin-right: 6px;
}

/* Grids */
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--ink);
  box-shadow: 0 28px 50px -30px color-mix(in oklch, var(--ink) 55%, transparent);
}
.card .icon { width: 36px; height: 36px; margin-bottom: 18px; color: var(--accent); transition: transform .4s var(--ease-pop); }
.card:hover .icon { transform: scale(1.15) rotate(-6deg); }
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { color: var(--ink-muted); font-size: 15px; margin: 0; }

/* Case studies */
.case-card {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 40px;
  padding: 44px 0;
  border-top: 1px solid var(--line);
}
.case-card:last-child { border-bottom: 1px solid var(--line); }
.case-num {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 200px;
  line-height: 1;
  color: var(--ink);
  opacity: 0.045;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.case-card > * { position: relative; z-index: 1; }
.case-card .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.case-card h3 { font-size: 26px; margin-bottom: 12px; }
.case-card ul { margin: 18px 0 0; padding-left: 18px; color: var(--ink-muted); font-size: 15px; }
.case-card li { margin-bottom: 6px; }
.case-card .placeholder {
  display: inline-block;
  margin-top: 16px;
  padding: 4px 10px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--ink-muted);
}
.case-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.case-links a { color: var(--ink-muted); border-bottom: 1px solid var(--line); padding-bottom: 1px; }
.case-links a:hover { color: var(--accent); border-color: var(--accent); }
@media (max-width: 860px) { .case-num { display: none; } }

/* Quote / differentiator */
.quote-block {
  background: var(--dark-bg);
  color: var(--dark-ink);
  border-radius: var(--radius);
  padding: 64px;
  position: relative;
  overflow: hidden;
}
.quote-block p.display { font-size: clamp(24px, 3.4vw, 32px); max-width: 780px; }
.quote-block .muted { color: color-mix(in oklch, var(--dark-ink) 60%, transparent); margin-top: 18px; max-width: 620px; }

/* Founders */
.founder-card { display: grid; grid-template-columns: 220px 1fr; gap: 32px; padding: 32px 0; border-top: 1px solid var(--line); }
.founder-card:last-child { border-bottom: 1px solid var(--line); }
.founder-avatar {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius);
  background: var(--dark-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 48px;
  transition: transform .4s var(--ease);
}
.founder-card:hover .founder-avatar { transform: scale(1.03) rotate(-1deg); }
.founder-card h3 { font-size: 22px; margin-bottom: 4px; }
.founder-card .role { color: var(--accent); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 14px; }
.founder-card p { color: var(--ink-muted); font-size: 15px; }

/* Contact */
.contact-panel {
  background: var(--dark-bg);
  color: var(--dark-ink);
  border-radius: var(--radius);
  padding: 64px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
}
.contact-panel h2 { color: var(--dark-ink); font-size: clamp(28px, 3.6vw, 34px); }
.contact-panel a.email { color: var(--accent); font-size: 20px; font-weight: 700; }
.contact-list { list-style: none; margin: 24px 0 0; padding: 0; }
.contact-list li { padding: 14px 0; border-top: 1px solid color-mix(in oklch, var(--dark-ink) 20%, transparent); font-size: 15px; }
.contact-list li:last-child { border-bottom: 1px solid color-mix(in oklch, var(--dark-ink) 20%, transparent); }
.contact-list .label { color: color-mix(in oklch, var(--dark-ink) 55%, transparent); display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 4px; }

/* Footer */
footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--ink-muted);
}

/* Responsive */
@media (max-width: 860px) {
  .hero-title { font-size: clamp(40px, 11vw, 56px); }
  .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .case-card { grid-template-columns: 1fr; }
  .founder-card { grid-template-columns: 96px 1fr; }
  .founder-avatar { font-size: 28px; }
  .quote-block, .contact-panel { padding: 36px; }
  .contact-panel { grid-template-columns: 1fr; }

  nav.primary-nav {
    display: none;
    position: fixed;
    inset: 0;
    top: 79px;
    background: rgba(252, 250, 245, 0.96);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--line);
    box-shadow: 0 30px 60px -28px color-mix(in oklch, var(--ink) 60%, transparent);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px;
    gap: 24px;
    z-index: 19;
  }
  nav.primary-nav.is-open { display: flex; }
  nav.primary-nav a:not(.btn) { font-size: 20px; color: var(--ink); }
  nav.primary-nav a:not(.btn).active { color: var(--accent); }
  .nav-toggle { display: flex; }
}

@media (prefers-reduced-motion: reduce) {
  .line-wrap .line, .fade-up, .liquid-word .fill, .liquid-word .shine, .scroll-cue, .reveal {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
    clip-path: none !important;
  }
  .wa-tab { transition: background .25s ease, color .25s ease !important; opacity: 1 !important; transform: none !important; }
  .wa-tab__dots i { animation: none !important; opacity: 1 !important; }
}

/* ---------- Before/after compare slider ---------- */
.compare-slider {
  position: relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 858 / 431;
  margin-top: 20px;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: ew-resize;
  touch-action: pan-y;
  box-shadow: 0 20px 40px oklch(20% 0.02 60 / 18%);
}
.compare-slider__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; pointer-events: none; }
.compare-slider__before-wrap { position: absolute; inset: 0; clip-path: inset(0 50% 0 0); }
.compare-slider__before-wrap .compare-slider__img { position: absolute; inset: 0; }
.compare-slider__handle {
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 2px;
  background: var(--bg);
  transform: translateX(-1px);
  box-shadow: 0 0 0 1px oklch(20% 0.02 60 / 20%);
}
.compare-slider__grip {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--ink);
  display: grid; place-items: center;
  box-shadow: 0 6px 18px oklch(20% 0.02 60 / 28%);
}
.compare-slider__grip svg { width: 15px; height: 15px; }
.compare-slider__tag {
  position: absolute; bottom: 12px;
  padding: 4px 10px;
  border-radius: var(--radius);
  background: oklch(20% 0.02 60 / 55%);
  color: var(--bg);
  font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  pointer-events: none;
}
.compare-slider__tag--before { left: 12px; }
.compare-slider__tag--after { right: 12px; }
.compare-caption { margin-top: 10px; font-size: 13px; }

/* ---------- WhatsApp dock tab ---------- */
.wa-tab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 18px 13px 13px;
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--radius);
  box-shadow: 0 14px 30px oklch(20% 0.02 60 / 22%);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.01em;
  opacity: 0;
  transform: translateY(18px);
  translate: 0 0;
  transition: opacity .6s var(--ease) .9s, transform .6s var(--ease-pop) .9s,
              background .25s var(--ease), color .25s var(--ease),
              box-shadow .25s var(--ease), translate .25s var(--ease-pop);
}
body.is-ready .wa-tab { opacity: 1; transform: translateY(0); }
.wa-tab:hover, .wa-tab:focus-visible {
  background: var(--accent);
  color: var(--ink);
  box-shadow: 0 16px 34px oklch(70% 0.19 50 / 32%);
  translate: 0 -3px;
}
.wa-tab__icon { position: relative; width: 22px; height: 22px; flex: none; display: grid; place-items: center; }
.wa-tab__icon svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.wa-tab__dots { position: relative; z-index: 1; display: flex; gap: 2.5px; }
.wa-tab__dots i {
  width: 3px; height: 3px; border-radius: 50%;
  background: currentColor; display: block;
  animation: waDot 1.3s ease-in-out infinite;
}
.wa-tab__dots i:nth-child(2) { animation-delay: .15s; }
.wa-tab__dots i:nth-child(3) { animation-delay: .3s; }
@keyframes waDot {
  0%, 60%, 100% { transform: translateY(0); opacity: .45; }
  30% { transform: translateY(-3px); opacity: 1; }
}

/* ---------- Phone polish ---------- */
a, button { -webkit-tap-highlight-color: transparent; }
body { overflow-x: hidden; }

@media (max-width: 640px) {
  .container { padding-left: 20px; padding-right: 20px; }
  header.site-header .bar { padding: 14px 20px; }
  nav.primary-nav { top: 63px; padding: 24px 20px; gap: 20px; }
  nav.primary-nav a:not(.btn) { font-size: 19px; }
  nav.primary-nav .btn { margin-top: 8px; }

  .hero { padding: 64px 0 56px; }
  .hero .lede { font-size: 17px; }
  .hero .actions { flex-wrap: wrap; }
  .hero .actions .btn { flex: 1 1 190px; justify-content: center; }
  .liquid-word { font-size: clamp(44px, 15vw, 120px); }

  section { padding: 72px 0; }
  section.tight { padding: 40px 0; }
  .section-head { margin-bottom: 32px; }
  .section-head h2 { font-size: 26px; }

  .proof-strip { gap: 18px; padding: 24px 0; }

  .quote-block, .contact-panel { padding: 30px 22px; }
  .contact-panel { gap: 28px; }
  .contact-list li { padding: 12px 0; }

  .case-card { gap: 24px; padding: 34px 0; }
  .case-card h3 { font-size: 22px; }

  .scroll-cue { margin-top: 48px; }
  .btn { min-height: 44px; }
}

@media (max-width: 480px) {
  .founder-card { grid-template-columns: 1fr; gap: 18px; }
  .founder-avatar { width: 72px; font-size: 20px; }
  .grid-2 .card, .grid-4 .card { padding: 22px 20px; }
  .card .icon { width: 30px; height: 30px; }
  h1, h2 { overflow-wrap: break-word; }
  .contact-panel a.email { font-size: 18px; }
  footer.site-footer { justify-content: center; text-align: center; }

  .wa-tab { right: 16px; bottom: 16px; padding: 13px; gap: 0; }
  .wa-tab__label { display: none; }
}