/* Slon13 variant 1 — side-rail instrument layout (Evolve-inspired tokens, system fonts) */

:root {
  --page: #000000;
  --surface: #0a0f18;
  --surface-raised: #111827;
  --text: #ffffff;
  --muted: rgba(255, 255, 255, 0.42);
  --accent: #69beff;
  --accent-alt: #8dd8ff;
  --accent-ink: #000814;
  --line: rgba(255, 255, 255, 0.15);
  --line-strong: rgba(255, 255, 255, 0.2);
  --glow: rgba(105, 190, 255, 0.35);
  --radius: 4px;
  --radius-lg: 8px;
  --section-space: clamp(3.5rem, 6vw, 5.5rem);
  --rail-width: clamp(220px, 16vw, 300px);
  --content-max: min(1280px, calc(100% - clamp(1.5rem, 4vw, 3rem)));
  --font-display: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.28s;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-width: 0;
  overflow-x: hidden;
  line-height: 1.55;
  font-family: var(--font-body);
  background: var(--page);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 90% 80% at 70% 20%, #000 20%, transparent 75%);
  opacity: 0.55;
}

body, button, input, select, textarea { font: inherit; }

a { color: inherit; text-decoration: none; }

img, svg, video, canvas, iframe {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.2vw, 3.75rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 2.8vw, 2.65rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin-bottom: 0.85rem;
}

h3 {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.25;
  font-weight: 600;
}

p { color: var(--muted); }

/* Shell: left rail + main canvas */
.page-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: var(--rail-width) minmax(0, 1fr);
  min-height: 100vh;
}

.site-rail {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--surface) 92%, var(--page));
  backdrop-filter: blur(12px);
  z-index: 40;
}

.page-canvas {
  min-width: 0;
  display: flex;
  justify-content: center;
}

.page-main {
  width: 100%;
  max-width: 1680px;
  padding-inline: clamp(1rem, 3vw, 2.5rem);
}

/* Header inside rail */
.site-header {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.header-inner {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 1.75rem;
  padding: clamp(1.25rem, 2.5vw, 2rem) clamp(1rem, 2vw, 1.5rem);
  min-height: 100%;
}

.brand {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.2;
  min-width: 0;
}

.brand-logo {
  display: block;
  width: clamp(44px, 5vw, 64px);
  height: clamp(44px, 5vw, 64px);
  max-width: 64px;
  max-height: 64px;
  border-radius: var(--radius);
  overflow: hidden;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
}

.brand-logo svg { width: 100%; height: 100%; }

.brand small {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.site-header nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin: 0;
  min-width: 0;
}

.site-header nav a {
  display: flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0.45rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.site-header nav a:hover {
  color: var(--accent-alt);
  border-left-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.75rem 1.15rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.header-cta {
  margin-top: auto;
  white-space: normal;
  text-align: center;
}

.button-primary,
.header-cta {
  background: linear-gradient(135deg, var(--accent-alt), var(--accent));
  color: var(--accent-ink);
  border-color: var(--accent);
}

.button-primary:hover,
.header-cta:hover,
.button-secondary:hover {
  transform: translateY(-1px);
}

.button-secondary {
  border-color: var(--line-strong);
  color: var(--text);
  background: transparent;
}

.button-secondary:hover {
  border-color: var(--accent);
  color: var(--accent-alt);
}

/* Hero — stacked instrument panel */
.hero {
  padding: clamp(2rem, 5vw, 4rem) 0 var(--section-space);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.85fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: stretch;
}

.hero-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.25rem, 2.5vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 6%, var(--surface)), var(--surface-raised));
  position: relative;
}

.hero-copy::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-alt), var(--accent), transparent);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.eyebrow,
.section-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 600;
  color: var(--accent-alt);
  margin-bottom: 0.85rem;
}

.lead {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  max-width: 52ch;
  color: color-mix(in srgb, var(--text) 78%, transparent);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.75rem 0 1rem;
}

.geo-line {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-visual {
  overflow: hidden;
  width: 100%;
  min-height: clamp(240px, 34vw, 420px);
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 12%, transparent), 0 24px 64px color-mix(in srgb, var(--accent) 10%, transparent);
  align-self: stretch;
}

.hero-visual svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Sections */
.section {
  padding: var(--section-space) 0;
  border-top: 1px solid var(--line);
}

.section-inner {
  width: var(--content-max);
  margin: 0 auto;
}

.section-heading {
  max-width: 720px;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.section-heading > p { font-size: 1.02rem; }

/* Services & cards — bento mosaic */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 0.85rem;
}

.card {
  min-width: 0;
  padding: clamp(1.1rem, 2vw, 1.5rem);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface-raised);
  display: flex;
  flex-direction: column;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.card:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  transform: translateY(-2px);
}

.component-services .card:nth-child(1) { grid-column: span 6; }
.component-services .card:nth-child(2) { grid-column: span 6; }
.component-services .card:nth-child(3) { grid-column: span 4; }
.component-services .card:nth-child(4) { grid-column: span 4; }
.component-services .card:nth-child(5) { grid-column: span 4; }

.component-benefits .cards-grid,
.component-scenarios .cards-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.component-benefits .card,
.component-scenarios .card {
  grid-column: span 3;
}

.component-scenarios .card:nth-child(5) {
  grid-column: span 6;
}

.card p { margin-bottom: 0; }

.card-icon,
.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 0.85rem;
  color: var(--accent-alt);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: var(--radius);
}

.card-icon svg,
.step-icon svg {
  width: 24px;
  height: 24px;
}

.card-label {
  display: block;
  font-family: var(--font-mono);
  color: var(--accent-alt);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 0.55rem;
}

.card-value {
  display: block;
  margin-top: 0.85rem;
  color: var(--accent-alt);
  font-size: 1rem;
  font-weight: 600;
}

.card small {
  display: block;
  color: var(--muted);
  margin-top: 0.35rem;
  font-size: 0.82rem;
}

/* Process — vertical timeline rail */
.process-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0;
  position: relative;
}

.process-list::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 0.75rem;
  bottom: 0.75rem;
  width: 1px;
  background: linear-gradient(var(--accent), color-mix(in srgb, var(--accent) 20%, transparent));
}

.process-list li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 1rem;
  padding: 1.25rem 0 1.25rem 0.5rem;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.process-list li:last-child { border-bottom: 0; }

.step-icon { margin-bottom: 0; z-index: 1; }

/* Geography — split city panels */
.geo-chips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.geo-chip {
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface-raised), var(--surface));
  min-height: 100%;
}

.geo-chip strong,
.geo-chip span { display: block; }

.geo-chip strong {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.geo-chip span {
  color: var(--muted);
  font-size: 0.88rem;
}

/* Guide — two-column reading layout */
.guide-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.25rem;
}

.chapter {
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  min-width: 0;
}

.chapter li {
  color: var(--muted);
  margin: 0.45rem 0;
}

/* FAQ */
.faq-list {
  max-width: none;
  display: grid;
  gap: 0.5rem;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  background: var(--surface);
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq-list summary::-webkit-details-marker { display: none; }

.faq-list p {
  padding-right: 0.5rem;
  margin-bottom: 0;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 1.05fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 0.85rem;
  background: var(--surface-raised);
  padding: clamp(1.15rem, 2vw, 1.5rem);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

input, select, textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line-strong);
  background: var(--page);
  color: var(--text);
  padding: 0.8rem 0.85rem;
  border-radius: var(--radius);
}

textarea {
  min-height: 110px;
  resize: vertical;
}

.form-message {
  color: var(--accent-alt);
  margin: 0;
  font-size: 0.9rem;
}

/* Footer */
.site-footer {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: color-mix(in srgb, var(--surface) 80%, var(--page));
  border-top: 1px solid var(--line-strong);
  margin-top: var(--section-space);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: clamp(1rem, 3vw, 2rem);
}

.footer-brand { font-size: 1.25rem; }

.site-footer a {
  display: block;
  color: var(--muted);
  margin: 0.35rem 0;
  font-size: 0.92rem;
}

.site-footer a:hover { color: var(--accent-alt); }

/* Icon motion — slowed instrument pulse */
.icon-draw path { stroke-dasharray: 34 8; animation: iconDraw 12s linear infinite; }
.icon-pulse { transform-box: fill-box; transform-origin: center; animation: iconPulse 12s ease-in-out infinite; }
.icon-slide { animation: iconSlide 12s ease-in-out infinite; }
.icon-spin { transform-box: fill-box; transform-origin: center; animation: iconSpin 14s linear infinite; }

@keyframes iconDraw { to { stroke-dashoffset: -84; } }
@keyframes iconPulse { 50% { transform: scale(0.9); opacity: 0.75; } }
@keyframes iconSlide { 50% { transform: translateX(3px); } }
@keyframes iconSpin { to { transform: rotate(360deg); } }

/* Wide desktop balance */
@media (min-width: 1440px) {
  .page-main { max-width: 1760px; }
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
  .section-inner { max-width: min(1320px, 100%); }
}

@media (min-width: 2000px) {
  .page-shell { grid-template-columns: 300px minmax(0, 1fr); }
  .page-main { padding-inline: 3rem; }
}

/* Tablet */
@media (max-width: 1100px) {
  .page-shell { grid-template-columns: 1fr; }
  .site-rail {
    position: sticky;
    top: 0;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line-strong);
  }
  .header-inner {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.85rem 1rem;
    padding: 0.85rem 1rem;
  }
  .brand { flex: 1 1 auto; }
  .site-header nav {
    flex-direction: row;
    flex-wrap: wrap;
    order: 3;
    width: 100%;
  }
  .site-header nav a {
    border-left: 0;
    border-bottom: 2px solid transparent;
    border-radius: var(--radius);
    min-height: 2.25rem;
    padding: 0.35rem 0.6rem;
  }
  .site-header nav a:hover { border-bottom-color: var(--accent); }
  .header-cta { margin-top: 0; margin-left: auto; white-space: nowrap; }
  .hero-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .component-services .card,
  .component-benefits .card,
  .component-scenarios .card { grid-column: span 1; }
  .component-scenarios .card:nth-child(5) { grid-column: span 2; }
  .guide-body { grid-template-columns: 1fr; }
  .geo-chips { grid-template-columns: 1fr; }
}

/* Mobile */
@media (max-width: 640px) {
  .page-main { padding-inline: 0.85rem; }
  .header-inner { padding: 0.75rem; }
  .brand-logo { width: 44px; height: 44px; }
  .site-header nav { display: none; }
  .header-cta { width: 100%; margin-left: 0; }
  .hero { padding-top: 1.5rem; }
  .hero-copy { padding: 1rem; }
  .hero-visual { min-height: 220px; aspect-ratio: 16 / 11; }
  .cards-grid,
  .component-benefits .cards-grid,
  .component-scenarios .cards-grid { grid-template-columns: 1fr; }
  .component-scenarios .card:nth-child(5) { grid-column: span 1; }
  .footer-grid { grid-template-columns: 1fr; }
  h1 { font-size: clamp(1.75rem, 9vw, 2.35rem); }
  h2 { font-size: clamp(1.45rem, 7vw, 2rem); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .card:hover { transform: none; }
}