/* Shared layout for inner pages: project.html, automation.html */

:root {
  --paper: #f5f8fb;
  --ink: #1d2a3a;
  --ink-soft: #5d6f82;
  --accent: #4a7ab8;
  --rule: 0.1rem solid rgba(29, 42, 58, 0.18);
  --nh: "Onest", sans-serif;
  --cond: "Onest", sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --hover: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  --x: 4.5rem;
}

* { box-sizing: border-box; }
html {
  font-size: 10px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--nh);
  font-size: 1.7rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
}

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

a:focus-visible,
button:focus-visible {
  outline: 0.2rem solid var(--accent);
  outline-offset: 0.3rem;
}

h1, h2, h3 {
  overflow-wrap: break-word;
  hyphens: auto;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.label,
.back,
.eyebrow,
.hint,
.chip,
.side small,
.meta,
.contacts,
.switch button {
  font-family: var(--cond);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* top */

.topbar {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.6rem;
  min-height: 6.4rem;
  padding: 0 var(--x);
  border-bottom: var(--rule);
}

.back {
  font-size: 1.2rem;
  color: var(--ink);
  background: linear-gradient(currentColor, currentColor) left bottom / 0 0.1rem no-repeat;
  transition: color var(--hover), background-size var(--hover);
}

.back:hover {
  color: var(--accent);
  background-size: 100% 0.1rem;
}

/* project switcher */

.switch { position: relative; min-width: 22rem; }

.switch > button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.8rem;
  width: 100%;
  min-height: 4rem;
  padding: 0 1.2rem;
  border: var(--rule);
  background: var(--paper);
  color: var(--ink);
  font-size: 1.2rem;
  cursor: pointer;
  transition: background var(--hover), color var(--hover), border-color var(--hover);
}

.switch > button::after {
  content: "";
  width: 0.7rem;
  height: 0.7rem;
  border-right: 0.2rem solid currentColor;
  border-bottom: 0.2rem solid currentColor;
  transform: rotate(45deg) translateY(-0.2rem);
  transition: transform var(--hover);
}

.switch > button:hover,
.switch.is-open > button {
  background: var(--ink);
  color: var(--paper);
}

.switch.is-open > button::after { transform: rotate(225deg) translateY(-0.2rem); }

.switch-list {
  position: absolute;
  top: calc(100% + 0.6rem);
  right: 0;
  display: grid;
  width: 100%;
  border: var(--rule);
  background: var(--paper);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-0.4rem);
  transition: opacity var(--hover), transform var(--hover), visibility var(--hover);
}

.switch.is-open .switch-list {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: none;
}

.switch-list a {
  padding: 1rem 1.2rem;
  font-family: var(--cond);
  font-size: 1.2rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background var(--hover), color var(--hover);
}

.switch-list a + a { border-top: 0.1rem solid rgba(29, 42, 58, 0.18); }

.switch-list a:hover,
.switch-list a[aria-current="page"] {
  background: var(--ink);
  color: var(--paper);
}

/* hero */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 24rem;
  border-bottom: var(--rule);
}

.hero-main { padding: 4.3rem var(--x); }

.eyebrow {
  margin: 0;
  font-size: 1.2rem;
}

.hero h1 {
  margin: 1.4rem 0 0;
  font-size: clamp(3.4rem, 6vw, 6.4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.summary {
  max-width: 52rem;
  margin: 1.8rem 0 0;
  font-size: 1.8rem;
  line-height: 1.55;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 2.8rem;
  padding: 1.3rem 2.2rem 1.2rem;
  border: 0.1rem solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--nh);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
  text-transform: none;
  transition: background var(--hover), color var(--hover), border-color var(--hover);
}

.btn svg {
  flex: none;
  display: block;
  width: 1.5rem;
  height: 1.5rem;
  margin-top: 0.1rem;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--hover);
}

.btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper);
}

.btn:hover svg { transform: translate(0.15rem, -0.15rem); }

.side {
  display: grid;
  align-content: end;
  gap: 0.6rem;
  padding: 4.3rem var(--x);
  border-left: var(--rule);
}

.side strong {
  font-size: 5.6rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.side small { font-size: 1.2rem; }

/* sections */

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 0.8rem 2rem;
  padding: 4.3rem var(--x) 2rem;
  border-bottom: var(--rule);
}

.section-head h2 {
  margin: 0;
  font-size: clamp(3rem, 4vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hint { font-size: 1.2rem; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 0;
  padding: 2.5rem var(--x);
  border-bottom: var(--rule);
  list-style: none;
}

.chip {
  padding: 0.6rem 1rem;
  border: 0.1rem solid rgba(29, 42, 58, 0.18);
  color: var(--ink-soft);
  font-size: 1.2rem;
}

/* cells: no outer frame, each cell draws its own right and bottom rule */

.cells {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.cell {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 2.5rem var(--x);
  border-right: var(--rule);
  border-bottom: var(--rule);
  transition: background var(--hover), color var(--hover);
}

.cell:nth-child(2n) { border-right: 0; }

.cell:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  border-right: 0;
}

.cell:hover {
  background: var(--ink);
  color: var(--paper);
}

a.cell {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 8.4rem;
  font-size: 1.9rem;
}

a.cell svg {
  flex: none;
  width: 1.8rem;
  height: 1.8rem;
  transition: transform var(--hover);
}

a.cell:hover svg { transform: translate(0.15rem, -0.15rem); }

.cell h3 {
  margin: 0;
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.cell p { margin: 0; }

.meta {
  font-size: 1.2rem;
  color: var(--ink-soft);
  transition: color var(--hover);
}

.cell:hover .meta {
  color: rgba(245, 248, 251, 0.65);
}

/* footer */

.contacts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.8rem;
  padding: 2.5rem var(--x);
  font-size: 1.2rem;
}

.contacts div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 2rem;
}

.contacts a {
  color: var(--ink);
  background: linear-gradient(currentColor, currentColor) left bottom / 0 0.1rem no-repeat;
  transition: color var(--hover), background-size var(--hover);
}

.contacts a:hover {
  color: var(--accent);
  background-size: 100% 0.1rem;
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .side { border-left: 0; border-top: var(--rule); }
  .cells { grid-template-columns: 1fr; }
  .cell { border-right: 0; }
}

@media (max-width: 560px) {
  :root { --x: 2rem; }
  .topbar { flex-wrap: wrap; padding: 1.2rem var(--x); }
  .switch { min-width: 0; width: 100%; }
  .hero-main, .side { padding-top: 2.8rem; padding-bottom: 2.8rem; }
  .section-head { padding-top: 3.2rem; }
  .side strong { font-size: 4.4rem; }
  .summary { font-size: 1.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}