/* ==========================================================================
   OpenShip — developer-tool design system, two surfaces:
   .os-mkt (dark marketing) and .os-app (split dark/light backend).
   Companion to references/design.md. Pair with assets/openship.js.
   ========================================================================== */


:root {
  /* shared tokens */
  --os-ink: #111113;
  --os-text-secondary: #9CA0A8;
  --os-surface: #FFFFFF;
  --os-line-light: #E5E5E8;
  --os-mint: #4ADE80;
  --os-grad: linear-gradient(100deg, #F472B6, #A78BFA 50%, #60A5FA);

  /* marketing tokens */
  --os-mkt-bg: #0B0B0D;
  --os-mkt-glow: rgba(180, 92, 200, 0.20);
  --os-mkt-text: #F4F4F5;
  --os-line-dark: #26262B;

  /* app tokens */
  --os-sidebar: #17171A;
  --os-sidebar-hover: rgba(255, 255, 255, 0.08);
  --os-app-bg: #F7F7F8;

  /* type */
  --os-font: 'Inter', -apple-system, sans-serif;
  --os-font-mono: 'JetBrains Mono', monospace;

  /* motion */
  --os-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --os-dur-micro: 200ms;
  --os-dur-ui: 500ms;

  /* elevation */
  --os-shadow-card: 0 1px 3px rgba(17, 17, 19, 0.05);
  --os-shadow-shot: 0 40px 120px rgba(0, 0, 0, 0.6);
}

/* ======================================================================
   SURFACE 1 — MARKETING
   ====================================================================== */

.os-mkt {
  background: var(--os-mkt-bg);
  color: var(--os-mkt-text);
  font-family: var(--os-font);
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}
.os-mkt__glow {
  position: absolute;
  inset: -20% -10% auto;
  height: 80%;
  background: radial-gradient(45% 55% at 50% 40%, var(--os-mkt-glow) 0%, transparent 70%);
  pointer-events: none;
  animation: os-glow-breathe 8s ease-in-out infinite alternate;
}
@keyframes os-glow-breathe {
  from { opacity: 0.7; transform: scale(1); }
  to   { opacity: 1; transform: scale(1.08); }
}

.os-mkt__nav {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
}
.os-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  color: inherit;
  text-decoration: none;
  text-transform: lowercase;
}
.os-logo__ring {
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
  border-radius: 50%;
}
.os-mkt__pillnav {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.os-mkt__pillnav a {
  padding: 8px 14px;
  border-radius: 999px;
  color: rgba(244, 244, 245, 0.8);
  text-decoration: none;
  font-size: 13px;
  transition: background var(--os-dur-micro) var(--os-ease), color var(--os-dur-micro) var(--os-ease);
}
.os-mkt__pillnav a:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.os-mkt__actions { display: flex; align-items: center; gap: 16px; }
.os-mkt__actions a { color: var(--os-mkt-text); text-decoration: none; font-size: 13px; }

.os-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 0;
  font: 600 13px var(--os-font);
  cursor: pointer;
  transition: transform var(--os-dur-micro) var(--os-ease), opacity var(--os-dur-micro) var(--os-ease);
}
.os-btn:hover { transform: translateY(-1px); }
.os-btn--white { background: #fff; color: var(--os-ink); }
.os-btn--ink { background: var(--os-ink); color: #fff; }
.os-btn--gradient { background: var(--os-grad); color: #fff; }

.os-mkt__hero {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 80px 24px 0;
}
.os-mkt__hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  color: #fff;
}
.os-mkt__hero p { color: var(--os-text-secondary); font-size: 14px; margin: 0 0 40px; }

.os-mkt__shots {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 0;
  padding: 0 24px 80px;
}
.os-shot {
  border-radius: 16px;
  box-shadow: var(--os-shadow-shot);
  overflow: hidden;
  border: 1px solid var(--os-line-dark);
}
.os-shot--left  { transform: rotate(-3deg) translateY(24px); z-index: 0; }
.os-shot--main  { z-index: 1; }
.os-shot--right { transform: rotate(3deg) translateY(24px); z-index: 0; }
.os-shot img, .os-shot > div { display: block; width: 100%; }

/* ======================================================================
   SURFACE 2 — BACKEND APP
   ====================================================================== */

.os-app {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
  background: var(--os-app-bg);
  color: var(--os-ink);
  font-family: var(--os-font);
  font-size: 13px;
}

/* ---------- sidebar ---------- */

.os-side {
  background: var(--os-sidebar);
  color: var(--os-mkt-text);
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.os-side .os-logo { padding: 0 12px 16px; }
.os-side__group {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(244, 244, 245, 0.4);
  padding: 16px 12px 6px;
}
.os-side__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 8px;
  color: rgba(244, 244, 245, 0.75);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: background var(--os-dur-micro) var(--os-ease);
}
.os-side__item:hover { background: var(--os-sidebar-hover); }
.os-side__item--active { background: var(--os-sidebar-hover); color: #fff; }
.os-side__cta {
  margin: auto 4px 8px;
  background: var(--os-grad);
  border: 0;
  border-radius: 10px;
  color: #fff;
  font: 600 13px var(--os-font);
  padding: 11px 16px;
  text-align: left;
  cursor: pointer;
  display: flex;
  gap: 8px;
  align-items: center;
  transition: filter var(--os-dur-micro) var(--os-ease);
}
.os-side__cta:hover { filter: brightness(1.08); }
.os-side__account {
  border-top: 1px solid var(--os-line-dark);
  padding-top: 12px;
  font-size: 12px;
  color: rgba(244, 244, 245, 0.6);
  display: flex;
  align-items: center;
  gap: 8px;
  padding-left: 12px;
}

/* ---------- work surface ---------- */

.os-main { padding: 24px 28px; display: grid; grid-template-columns: 1fr 340px; gap: 24px; align-items: start; }

.os-card {
  background: var(--os-surface);
  border: 1px solid var(--os-line-light);
  border-radius: 16px;
  box-shadow: var(--os-shadow-card);
  padding: 24px;
}
.os-card__title { font-size: 15px; font-weight: 600; margin: 0 0 16px; }
.os-caption { font-size: 10.5px; color: var(--os-text-secondary); }

/* tab bar */
.os-tabs {
  display: flex;
  gap: 20px;
  border-bottom: 1px solid var(--os-line-light);
  margin-bottom: 20px;
}
.os-tab {
  padding: 0 2px 10px;
  border: 0;
  background: none;
  font: 500 13px var(--os-font);
  color: var(--os-text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: color var(--os-dur-micro) var(--os-ease), border-color var(--os-dur-micro) var(--os-ease);
}
.os-tab--active { color: var(--os-ink); border-bottom-color: var(--os-ink); }

/* framework option grid */
.os-fw-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.os-fw {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 18px 8px 14px;
  border: 1px solid var(--os-line-light);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  font: 500 12px var(--os-font);
  color: var(--os-ink);
  transition: border-color 150ms var(--os-ease), transform 150ms var(--os-ease);
}
.os-fw:hover { transform: translateY(-2px); }
.os-fw--active { border: 1.5px solid var(--os-ink); }
.os-fw__icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 16px;
  background: var(--os-app-bg);
}

/* config rows + toggles */
.os-config { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 20px; }
.os-field { display: grid; gap: 6px; }
.os-field__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.os-field__label { font-size: 12px; font-weight: 500; }
.os-toggle {
  width: 40px;
  height: 22px;
  border-radius: 999px;
  background: var(--os-line-light);
  border: 0;
  position: relative;
  cursor: pointer;
  transition: background var(--os-dur-micro) var(--os-ease);
}
.os-toggle::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: left var(--os-dur-micro) var(--os-ease);
}
.os-toggle.is-on { background: var(--os-ink); }
.os-toggle.is-on::after { left: 20px; }

/* command inputs — dotted border, mono */
.os-cmd {
  border: 1.5px dotted var(--os-line-light);
  border-radius: 10px;
  padding: 10px 14px;
  font: 12px var(--os-font-mono);
  color: var(--os-ink);
  background: #fff;
  outline: none;
  width: 100%;
  box-sizing: border-box;
}
.os-cmd:focus { border-color: var(--os-ink); }

/* ---------- right config rail ---------- */

.os-rail { display: grid; gap: 16px; }
.os-repo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
}
.os-repo__icon { font-size: 16px; }
.os-branch {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--os-line-light);
  border-radius: 10px;
  padding: 9px 12px;
  font-size: 12px;
  background: #fff;
  cursor: pointer;
}
.os-segment {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--os-app-bg);
  border-radius: 10px;
  padding: 3px;
  gap: 3px;
}
.os-segment button {
  border: 0;
  background: transparent;
  padding: 8px;
  border-radius: 8px;
  font: 500 12px var(--os-font);
  color: var(--os-text-secondary);
  cursor: pointer;
}
.os-segment button.is-on { background: #fff; color: var(--os-ink); box-shadow: var(--os-shadow-card); }
.os-domain__row { display: flex; gap: 8px; margin-top: 8px; }
.os-domain__row input {
  flex: 1;
  border: 1px solid var(--os-line-light);
  border-radius: 10px;
  padding: 9px 12px;
  font: 12px var(--os-font);
  outline: none;
}
.os-domain__suffix {
  display: grid;
  place-items: center;
  padding: 0 12px;
  border: 1px solid var(--os-line-light);
  border-radius: 10px;
  font-size: 12px;
  color: var(--os-text-secondary);
  background: var(--os-app-bg);
}
.os-ssl { font-size: 11px; color: var(--os-mint); margin-top: 8px; display: flex; gap: 6px; align-items: center; }
.os-deploy {
  width: 100%;
  background: var(--os-ink);
  color: #fff;
  border: 0;
  border-radius: 12px;
  padding: 14px;
  font: 600 14px var(--os-font);
  cursor: pointer;
  display: flex;
  justify-content: center;
  gap: 8px;
  transition: transform var(--os-dur-micro) var(--os-ease);
}
.os-deploy:hover { transform: translateY(-1px); }
.os-summary { display: grid; gap: 10px; }
.os-summary__row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
}
.os-summary__row span:first-child { color: var(--os-text-secondary); width: 18px; }
.os-summary__row b { margin-left: auto; font-weight: 500; }

/* ---------- dark mobile variant ---------- */

.os-app--dark {
  background: var(--os-mkt-bg);
  color: var(--os-mkt-text);
}
.os-app--dark .os-card {
  background: var(--os-sidebar);
  border-color: var(--os-line-dark);
  color: var(--os-mkt-text);
}
.os-app--dark .os-accent { color: var(--os-mint); }

/* ---------- reveals ---------- */

[data-os-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--os-dur-ui) var(--os-ease), transform var(--os-dur-ui) var(--os-ease);
}
[data-os-reveal].is-revealed { opacity: 1; transform: translateY(0); }
.os-mkt [data-os-reveal] { transform: translateY(40px); }
.os-mkt [data-os-reveal].is-revealed { transform: translateY(0); }

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .os-mkt__glow { animation: none; }
  [data-os-reveal] { transition: opacity 150ms linear; transform: none; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}