/* Nacelle support site — shared stylesheet.
   Plain CSS, no framework, no build step. */

/* Brand tokens: Galaxy (accent), Slate (neutrals), system Orange/Red — Nacelle color palette */
:root {
  --color-bg: #ffffff;
  --color-surface: #f8f8fd;
  --color-border: #dcdce7;
  --color-border-hover: #a6a6bd;
  --color-text: #17172b;
  --color-text-secondary: #72728b;
  --color-text-tertiary: #a6a6bd;
  --color-accent: #5c35f6;
  --color-accent-hover: #4527d4;
  --color-accent-light: #e2d7fd;
  --color-dark: #17172b;
  --color-warning-bg: #fff2ed;
  --color-warning-border: #ffbfa4;
  --color-warning-text: #c64201;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-pill: 100px;
  --max-width: 740px;
  --max-width-wide: 960px;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04), 0 0 0 1px rgba(0, 0, 0, 0.03);
  --shadow-card-hover: 0 4px 12px rgba(92, 53, 246, 0.08), 0 0 0 1px rgba(92, 53, 246, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

a:hover,
a:focus {
  color: var(--color-accent-hover);
  text-decoration: underline;
  text-underline-offset: 2px;
}

h1, h2, h3 {
  line-height: 1.25;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h1 {
  font-size: clamp(1.6rem, 3vw + 0.8rem, 2.1rem);
  letter-spacing: -0.03em;
}

h2 { font-size: clamp(1.15rem, 1.2vw + 0.85rem, 1.3rem); }
h3 { font-size: 1.05rem; }

p, ul, ol {
  margin: 0 0 1rem;
}

ul, ol {
  padding-left: 1.25rem;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}

code {
  font-size: 0.9em;
  background: var(--color-surface);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
}

/* Layout ------------------------------------------------------------ */

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.92);
}

.site-header__inner,
.site-footer__inner,
.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.875rem 1.5rem;
}

.page--wide {
  max-width: var(--max-width-wide);
}

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

.site-header__brand {
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.site-header__brand:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.site-header__logo {
  display: block;
  height: 26px;
  width: auto;
}

.site-header__subtitle {
  color: var(--color-text-tertiary);
  font-weight: 500;
  border-left: 1px solid var(--color-border);
  padding-left: 0.75rem;
  font-size: 0.9rem;
  letter-spacing: -0.01em;
}

.site-nav {
  display: flex;
  gap: 0.25rem;
  font-size: 0.9rem;
}

.site-nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color 0.15s ease, background 0.15s ease;
}

.site-nav a:hover {
  color: var(--color-text);
  background: var(--color-surface);
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  color: var(--color-accent);
  background: var(--color-accent-light);
  font-weight: 500;
}

main {
  flex: 1;
}

.page {
  padding-top: 2rem;
  padding-bottom: 4rem;
}

@media (min-width: 640px) {
  .page {
    padding-top: 2.5rem;
  }
}

.page > :first-child {
  margin-top: 0;
}

/* Back link */
.page > p:first-child a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color 0.15s ease;
}

.page > p:first-child a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.site-footer a {
  color: var(--color-text-secondary);
}

/* App cards on the hub ------------------------------------------------ */

.app-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}

.app-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.app-card:hover,
.app-card:focus-within {
  border-color: rgba(92, 53, 246, 0.25);
  box-shadow: var(--shadow-card-hover);
}

.app-card h2 {
  margin-top: 0;
  margin-bottom: 0.35rem;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.app-card h2 a {
  color: var(--color-text);
  text-decoration: none;
}

.app-card h2 a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.app-card__arrow {
  color: var(--color-text-tertiary);
  font-size: 1.15rem;
  line-height: 1;
  transition: transform 0.2s ease, color 0.2s ease;
}

.app-card:hover .app-card__arrow,
.app-card:focus-within .app-card__arrow {
  color: var(--color-accent);
  transform: translateX(3px);
}

.app-card > p {
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.app-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0;
  margin-bottom: 0;
}

.app-card__links a {
  font-size: 0.85rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.app-card__links a:hover {
  background: var(--color-accent-light);
  color: var(--color-accent);
  text-decoration: none;
}

.app-card__links a:last-child {
  background: var(--color-accent);
  color: #fff;
}

.app-card__links a:last-child:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

/* Remove the old dot separator */
.app-card__links a + a::before {
  content: none;
}

/* Resource grid (per-app landing) ------------------------------------ */

.resource-grid {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 560px) {
  .resource-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  .resource-grid--single {
    grid-template-columns: 1fr;
  }
}

.resource-card {
  display: block;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
  height: 100%;
}

.resource-card:hover,
.resource-card:focus {
  border-color: rgba(92, 53, 246, 0.25);
  box-shadow: var(--shadow-card-hover);
  color: var(--color-text);
  text-decoration: none;
}

.resource-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.resource-card__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  margin: 0 0 0.3rem;
}

.resource-card__arrow {
  display: inline-flex;
  color: var(--color-text-tertiary);
  transition: transform 0.2s ease, color 0.2s ease;
  font-size: 1rem;
}

.resource-card:hover .resource-card__arrow,
.resource-card:focus .resource-card__arrow {
  color: var(--color-accent);
  transform: translateX(3px);
}

.resource-card__desc {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0;
}

/* Callouts ----------------------------------------------------------- */

.callout {
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin: 1.5rem 0;
  font-size: 0.925rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  line-height: 1.55;
}

.callout--warning {
  background: var(--color-warning-bg);
  border-color: var(--color-warning-border);
  color: var(--color-warning-text);
}

.callout strong {
  color: inherit;
}

/* FAQ ---------------------------------------------------------------- */

.faq details {
  border-top: 1px solid var(--color-border);
  padding: 0;
}

.faq details:last-of-type {
  border-bottom: 1px solid var(--color-border);
}

.faq summary {
  font-weight: 600;
  font-size: 0.975rem;
  cursor: pointer;
  list-style: none;
  padding: 1rem 2rem 1rem 0;
  position: relative;
  color: var(--color-text);
  transition: color 0.15s ease;
}

.faq summary:hover {
  color: var(--color-accent);
}

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

.faq summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 1rem;
  color: var(--color-text-tertiary);
  font-weight: 400;
  font-size: 1.3rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.faq details[open] summary::after {
  content: "\2013";
}

.faq details > *:not(summary) {
  margin-top: 0;
  padding-bottom: 1rem;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.faq details > *:not(summary):first-of-type {
  margin-top: -0.25rem;
}

/* Forms -------------------------------------------------------------- */

.form-field {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.15rem;
}

.form-field label {
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
  color: var(--color-text);
}

.form-field .hint {
  font-weight: 400;
  color: var(--color-text-tertiary);
  font-size: 0.825rem;
}

.required-marker {
  color: #d1265d;
  margin-left: 0.1rem;
  font-weight: 600;
}

.form-legend {
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
  margin: 0 0 1.25rem;
}

.form-field input,
.form-field select,
.form-field textarea {
  font: inherit;
  font-size: 0.925rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.625rem 0.85rem;
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--color-text-tertiary);
}

.form-field input:hover,
.form-field select:hover,
.form-field textarea:hover {
  border-color: var(--color-border-hover);
}

.form-field textarea {
  min-height: 8rem;
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(92, 53, 246, 0.1);
}

.button,
button[type="submit"] {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.7rem 1.5rem;
  font: inherit;
  font-size: 0.925rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, transform 0.1s ease;
}

.button:hover,
button[type="submit"]:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.button:active,
button[type="submit"]:active {
  transform: scale(0.98);
}

.honeypot {
  position: absolute;
  left: -9999px;
  visibility: hidden;
}

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

@media (max-width: 639px) {
  .site-header__inner,
  .site-footer__inner,
  .page {
    padding-left: 1.15rem;
    padding-right: 1.15rem;
  }
}

@media (min-width: 640px) {
  h1 { font-size: 2.1rem; }
  .app-list { grid-template-columns: 1fr; }
}

/* Inline SVG arrow sizing --------------------------------------------
   The site uses inline <svg> for its arrows (consistent cross-OS
   rendering vs. Unicode chars like → / ←). SVGs have no intrinsic size
   without width/height attributes, so we constrain them here. Color is
   inherited via stroke="currentColor" on the SVG path, so no extra
   color rule is needed. */

.app-card__arrow svg,
.resource-card__arrow svg {
  display: block;
  width: 14px;
  height: 14px;
}

.page > p:first-child a svg {
  width: 12px;
  height: 12px;
  transition: transform 0.15s ease;
}

.page > p:first-child a:hover svg {
  transform: translateX(-2px);
}