/* Oxid landing page — Industrial Elegance, per DESIGN.md */

:root {
  --carbon: #121212;
  --iron: #1a1a1a;
  --iron-2: #1f1f1f;
  --border: #333333;
  --steel: #f4f4f5;
  --orange: #de5236;
  --green: #4a9e79;
  --ash: #6b7280;

  --font-ui: "Fira Sans", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "Fira Code", ui-monospace, "SFMono-Regular", Menlo, monospace;

  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--carbon);
  color: var(--steel);
  font-family: var(--font-ui);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

code {
  font-family: var(--font-mono);
  background: var(--iron-2);
  border: 1px solid var(--border);
  padding: 0.1em 0.4em;
  border-radius: 2px;
  font-size: 0.9em;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--orange);
  color: var(--carbon);
  padding: 0.75rem 1rem;
  z-index: 100;
}
.skip-link:focus {
  left: 0;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Topbar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(18, 18, 18, 0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--steel);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.95rem;
}

.primary-nav a {
  text-decoration: none;
  color: var(--steel);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.primary-nav a:hover {
  color: var(--orange);
  border-color: var(--orange);
}

.primary-nav a.nav-cta {
  display: inline-flex;
  align-items: center;
  line-height: 1;
  border: 1px solid var(--border);
  padding: 0.6rem 0.75rem;
  border-radius: 2px;
  font-family: var(--font-mono);
}

.nav-cta:hover {
  border-color: var(--orange);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 2px;
  width: 40px;
  height: 36px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--steel);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 5.5rem 0 4.5rem;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(222, 82, 54, 0.06), transparent 60%);
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(244, 244, 245, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 244, 245, 0.05) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse 60% 55% at 50% 20%, #000 40%, transparent 85%);
  animation: grid-drift 30s linear infinite;
}

@keyframes grid-drift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 84px 42px, 84px 42px; }
}

.hero-inner {
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.dot-building {
  background: var(--orange);
  box-shadow: 0 0 0 0 rgba(222, 82, 54, 0.6);
  animation: pulse 1.6s infinite;
}

.dot-running {
  background: var(--green);
  animation: pulse-green 1.6s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(222, 82, 54, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(222, 82, 54, 0); }
  100% { box-shadow: 0 0 0 0 rgba(222, 82, 54, 0); }
}

@keyframes pulse-green {
  0% { box-shadow: 0 0 0 0 rgba(74, 158, 121, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(74, 158, 121, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 158, 121, 0); }
}

.hero-word {
  font-family: var(--font-mono);
  font-size: clamp(4.5rem, 15vw, 9.5rem);
  margin: 0;
  letter-spacing: -0.03em;
  font-weight: 600;
  line-height: 0.88;
}

.cursor {
  display: inline-block;
  width: 0.5em;
  height: 0.72em;
  margin-left: 0.08em;
  background: var(--orange);
  animation: blink 1s steps(1) infinite;
  vertical-align: -0.06em;
}

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

.tagline {
  font-size: clamp(1.9rem, 4.8vw, 2.9rem);
  margin: 2.5rem 0 0.9rem;
  color: var(--steel);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  max-width: 780px;
  text-wrap: balance;
}

.subtagline {
  font-family: var(--font-mono);
  color: var(--orange);
  margin: 0 0 2rem;
  font-size: clamp(1rem, 2.6vw, 1.4rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.45;
  max-width: 720px;
  text-wrap: balance;
}

.cta-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.4rem;
  border-radius: 2px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  font-size: 0.95rem;
  transition: transform 0.1s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--orange);
  color: var(--carbon);
}

.btn-primary:hover {
  background: #f06246;
}

.btn-outline {
  border-color: var(--border);
  color: var(--steel);
}

.btn-outline:hover {
  border-color: var(--orange);
  color: var(--orange);
}

/* ---------- Sections ---------- */

.section {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border);
}

.section-alt {
  background: var(--iron);
}

.eyebrow {
  font-family: var(--font-mono);
  color: var(--orange);
  text-transform: lowercase;
  letter-spacing: 0.02em;
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
}

.section h2 {
  font-size: 2rem;
  max-width: 720px;
  margin: 0 auto 2.5rem;
  letter-spacing: -0.01em;
  text-align: center;
  text-wrap: balance;
}

.section .eyebrow {
  text-align: center;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.card {
  border: 1px solid var(--border);
  padding: 1.75rem;
  border-radius: 2px;
  background: var(--iron-2);
}

.card-accent {
  border-color: var(--orange);
}

.card h3 {
  margin-top: 0;
}

.card p {
  color: #c7c7ca;
  margin-bottom: 0;
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
  border: 1px solid var(--border);
}

.tag-good {
  color: var(--green);
  border-color: var(--green);
}

.tag-bad {
  color: var(--orange);
  border-color: var(--orange);
}

.tag-muted {
  color: var(--ash);
  border-color: var(--border);
}

.feature {
  border: 1px solid var(--border);
  padding: 1.75rem;
  border-radius: 2px;
  background: var(--iron-2);
}

.feature-icon {
  width: 40px;
  height: 40px;
  color: var(--orange);
  margin-bottom: 1rem;
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.feature p {
  margin: 0;
  color: #c7c7ca;
  font-size: 0.95rem;
}

/* ---------- Timeline ---------- */

.timeline {
  list-style: none;
  margin: 0 0 3rem;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.timeline li {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 1.25rem 1.5rem;
  background: var(--iron-2);
}

.timeline-index {
  font-family: var(--font-mono);
  color: var(--orange);
  font-size: 1.1rem;
  font-weight: 600;
  flex-shrink: 0;
}

.timeline h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}

.timeline p {
  margin: 0;
  color: #c7c7ca;
}

/* ---------- Terminal ---------- */

.terminal {
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  background: #0d0d0d;
}

.terminal-titlebar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
  background: var(--iron);
}

.terminal-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
}

.terminal-title {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ash);
}

.terminal-body {
  margin: 0;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
  overflow-x: auto;
}

.tk-orange { color: var(--orange); }
.tk-green { color: var(--green); }
.tk-gray, .tk-ash { color: var(--ash); }

/* ---------- Typewriter (hero CLI preview) ---------- */

.tw-line {
  color: var(--steel);
}

.tw-line::before {
  content: attr(data-prompt) " ";
  color: var(--ash);
}

.tw-line[data-color="orange"],
.tw-line[data-color="orange"]::before { color: var(--orange); }
.tw-line[data-color="green"],
.tw-line[data-color="green"]::before { color: var(--green); }
.tw-line[data-color="ash"],
.tw-line[data-color="ash"]::before { color: var(--ash); }

.typewriter .tw-line {
  visibility: hidden;
}

.typewriter.is-typing .tw-line {
  visibility: visible;
}

.tw-caret {
  display: inline-block;
  width: 0.5em;
  height: 1em;
  margin-left: 1px;
  background: var(--orange);
  vertical-align: -0.15em;
  animation: blink 0.85s steps(1) infinite;
}

/* ---------- CLI command groups ---------- */

.cli-grid {
  margin-top: 1.5rem;
}

.cli-grid .card h3 {
  margin-top: 0;
}

.cli-grid .card p {
  margin-bottom: 0.9rem;
}

.cli-grid .card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.cli-grid .card li {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #c7c7ca;
}

.cli-note {
  margin: 1.25rem 0 0;
  color: var(--ash);
  font-size: 0.95rem;
}

/* ---------- Status / interfaces ---------- */

.status-copy {
  max-width: 720px;
  color: #c7c7ca;
  margin: 0 auto 2.5rem;
  text-align: center;
  text-wrap: balance;
}

.status-copy a {
  color: var(--orange);
}

.interface-card {
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 1.5rem;
  background: var(--iron-2);
}

.interface-card.is-planned {
  color: var(--ash);
}

.interface-card h3 {
  margin: 0.75rem 0 0.4rem;
  font-size: 1.05rem;
}

.interface-card p {
  margin: 0;
  font-size: 0.9rem;
  color: inherit;
}

.interface-card:not(.is-planned) p {
  color: #c7c7ca;
}

/* ---------- CTA band ---------- */

.cta-band {
  text-align: center;
  background:
    linear-gradient(180deg, rgba(222, 82, 54, 0.08), transparent 70%);
}

.cta-band-inner h2 {
  margin-left: auto;
  margin-right: auto;
}

.qs-cmd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  background: var(--iron-2);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 0.55rem 1rem;
  color: var(--steel);
  max-width: 100%;
  text-align: center;
  line-height: 1.5;
  overflow-wrap: anywhere;
  word-break: break-word;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.qs-cmd:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.qs-cmd.qs-copied {
  border-color: var(--green);
  color: var(--green);
}

.hero-qs {
  margin: 1.75rem auto 0;
  max-width: 640px;
}

/* ---------- Showcase (CLI / dashboard preview) ---------- */

.showcase {
  margin: 3rem auto 0;
  max-width: 760px;
  width: 100%;
  text-align: left;
}

.showcase-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: -1px;
  position: relative;
  z-index: 1;
}

.showcase-tab {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ash);
  background: var(--iron);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 2px 2px 0 0;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  transition: color 0.15s ease;
}

.showcase-tab:hover {
  color: var(--steel);
}

.showcase-tab.is-active {
  color: var(--steel);
  background: #0d0d0d;
}

.showcase-panel .terminal,
.showcase-panel .mock-dashboard {
  border-top-left-radius: 0;
}

.showcase-panel[hidden] {
  display: none;
}

/* ---------- Dashboard mockup ---------- */

.mock-dashboard {
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  background: var(--carbon);
  font-family: var(--font-mono);
}

.mock-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1.1rem;
  border-bottom: 1px solid var(--border);
  background: var(--iron);
}

.mock-brand {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.85rem;
}

.mock-nav {
  display: flex;
  gap: 1rem;
  font-size: 0.78rem;
  color: var(--ash);
}

.mock-nav .is-active {
  color: var(--orange);
}

.mock-stats {
  display: flex;
  gap: 2rem;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--border);
}

.mock-stats div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.mock-stats strong {
  font-size: 1.3rem;
  line-height: 1;
}

.mock-stats span {
  font-size: 0.72rem;
  color: var(--ash);
  text-transform: lowercase;
}

.mock-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.mock-table td {
  padding: 0.65rem 1.1rem;
  border-top: 1px solid var(--border);
  white-space: nowrap;
}

.mock-table tr:first-child td {
  border-top: none;
}

.mock-table .dot {
  margin-right: 0.55rem;
  vertical-align: middle;
}

.mock-table tr.is-paused {
  color: var(--ash);
}

.mock-table tr.is-paused .dot {
  background: var(--ash);
}

.mock-url {
  width: 100%;
  color: var(--ash);
  text-align: right;
}

/* ---------- Install — 60 seconds ---------- */

#install .eyebrow,
#install h2,
.install-lead {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

#install h2 {
  max-width: 720px;
  text-wrap: balance;
}

.install-lead {
  max-width: 640px;
  color: #c7c7ca;
  margin: 0 auto 2.25rem;
  text-align: center;
  text-wrap: balance;
}

.install-card {
  border: 1px solid var(--border);
  padding: 1.75rem;
  border-radius: 2px;
  background: var(--iron-2);
  display: flex;
  flex-direction: column;
}

.install-card p {
  max-width: none;
  margin: 0 0 1rem;
  color: #c7c7ca;
  font-size: 0.95rem;
}

.install-card-accent {
  border-color: var(--orange);
}

.install-step {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--orange);
  margin-bottom: 0.75rem;
  display: block;
}

.install-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}

.install-card .cmd-block {
  margin-top: auto;
  width: 100%;
  text-align: left;
}

.install-list {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
  max-width: none;
  text-align: left;
  color: #c7c7ca;
  font-size: 0.92rem;
  display: grid;
  gap: 0.35rem;
}

.install-list li::marker {
  color: var(--orange);
}

.install-card .muted {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--ash);
}

.install-footnote {
  max-width: 720px;
  margin: 1.75rem auto 0;
  color: var(--ash);
  font-size: 0.92rem;
  text-align: center;
  text-wrap: balance;
}

.install-footnote a {
  color: var(--orange);
}

/* Prevent grid blowout — long <pre> lines (curl URLs) otherwise force page-level horizontal scroll */
.grid-3 > *,
.install-card,
.install-stack > * {
  min-width: 0;
}

.install-card {
  overflow: hidden;
}

.install-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  max-width: 1080px;
  margin: 0 auto;
}

.cmd-block {
  display: block;
  max-width: 100%;
  min-width: 0;
  margin: 0 0 1.25rem;
  padding: 0.9rem 1.1rem;
  background: #0d0d0d;
  border: 1px solid var(--border);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  overflow-x: auto;
  overflow-y: hidden;
  color: var(--steel);
  white-space: pre;
  word-wrap: normal;
  -webkit-overflow-scrolling: touch;
}

.cmd-block code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  white-space: pre;
  overflow-wrap: normal;
  word-break: normal;
}

html, body {
  overflow-x: clip;
}

.cta-band-inner p {
  max-width: 560px;
  margin: 0 auto 2rem;
  color: #c7c7ca;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-tagline {
  color: var(--ash);
  font-size: 0.9rem;
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.9rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--ash);
}

.footer-links a:hover {
  color: var(--orange);
}

/* ---------- Reveal-on-scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .primary-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--carbon);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.5rem 1.5rem;
    gap: 1rem;
    display: none;
  }

  .primary-nav.is-open {
    display: flex;
  }

  .hero h1 {
    font-size: clamp(4rem, 16vw, 6rem);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}