/* ==========================================================================
   Outfits — outfitstravel.app
   Single shared stylesheet for every page. Mobile-first.
   Palette mirrors the in-app brand: near-black ink on warm off-white paper.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */

:root {
  color-scheme: light dark;

  /* Colour */
  --color-ink: #1a1a1a;
  --color-text: #1a1a1a;
  --color-subtext: #6e6e6b;
  --color-bg: #fafaf8;
  --color-bg-2: #f0f0ed;
  --color-surface: #ffffff;
  --color-divider: #e4e4e0;
  --color-on-ink: #fafaf8;

  /* Type */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --tracking-tight: -0.02em;
  --tracking-wide: 0.08em;

  /* Shape & elevation */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 2px rgba(26, 26, 26, 0.04),
    0 8px 24px rgba(26, 26, 26, 0.06);
  --shadow-card-hover: 0 2px 4px rgba(26, 26, 26, 0.05),
    0 16px 40px rgba(26, 26, 26, 0.1);

  /* Layout */
  --container-max: 68rem;
  --container-pad: 1.25rem;
  --section-gap: clamp(4rem, 10vw, 7rem);

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 500ms;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-ink: #f2f2f0;
    --color-text: #f5f5f4;
    --color-subtext: #a1a19e;
    --color-bg: #0e0e0f;
    --color-bg-2: #1c1c1e;
    --color-surface: #232325;
    --color-divider: #3a3a3c;
    --color-on-ink: #0e0e0f;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-card-hover: 0 2px 4px rgba(0, 0, 0, 0.35),
      0 16px 40px rgba(0, 0, 0, 0.45);
  }
}

/* --------------------------------------------------------------------------
   2. Base
   -------------------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.5em;
  line-height: 1.15;
  letter-spacing: var(--tracking-tight);
  font-weight: 700;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
}

h2 {
  font-size: clamp(1.625rem, 4vw, 2.375rem);
}

h3 {
  font-size: 1.1875rem;
}

p {
  margin: 0 0 1em;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

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

:focus-visible {
  outline: 2px solid var(--color-ink);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--color-ink);
  color: var(--color-on-ink);
}

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.container--narrow {
  max-width: 44rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.625rem 1rem;
  background: var(--color-ink);
  color: var(--color-on-ink);
  border-radius: var(--radius-pill);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
}

/* --------------------------------------------------------------------------
   3. Buttons
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.875rem 1.625rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out),
    background-color 200ms var(--ease-out);
}

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

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--color-ink);
  color: var(--color-on-ink);
}

.btn--primary:hover {
  box-shadow: var(--shadow-card);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-divider);
}

.btn--secondary:hover {
  background: var(--color-bg-2);
}

/* Store badges: two-line label with platform glyph */
.btn--store {
  padding: 0.75rem 1.5rem;
  text-align: left;
}

.btn--store .btn__icon {
  flex: none;
  width: 1.625rem;
  height: 1.625rem;
}

.btn--store .btn__label {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.btn--store .btn__label small {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  opacity: 0.75;
}

.btn--store .btn__label span {
  font-size: 1.0625rem;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* --------------------------------------------------------------------------
   4. Header & footer
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: var(--tracking-tight);
  text-decoration: none;
}

.brand svg {
  width: 1.75rem;
  height: 1.75rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem 1.5rem;
}

.site-nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-subtext);
  text-decoration: none;
  padding: 0.375rem 0.25rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-text);
}

.site-footer {
  margin-top: var(--section-gap);
  border-top: 1px solid var(--color-divider);
  padding-block: 2.5rem;
  color: var(--color-subtext);
  font-size: 0.9375rem;
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.site-footer a {
  color: inherit;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-text);
  text-decoration: underline;
}

@media (min-width: 640px) {
  .site-footer__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* --------------------------------------------------------------------------
   5. Hero
   -------------------------------------------------------------------------- */

.hero {
  padding-block: clamp(3.5rem, 9vw, 6.5rem) 0;
  text-align: center;
}

.hero__eyebrow {
  display: inline-block;
  margin-bottom: 1.25rem;
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-subtext);
}

.hero__lede {
  max-width: 36rem;
  margin: 0 auto 2rem;
  font-size: clamp(1.125rem, 2.5vw, 1.3125rem);
  color: var(--color-subtext);
  text-wrap: pretty;
}

.hero .btn-row {
  justify-content: center;
}

.hero__note {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--color-subtext);
}

.hero__art {
  max-width: 40rem;
  margin: clamp(2.5rem, 6vw, 4rem) auto 0;
}

.hero__art svg {
  width: 100%;
  height: auto;
}

/* --------------------------------------------------------------------------
   6. Sections & feature cards
   -------------------------------------------------------------------------- */

.section {
  padding-top: var(--section-gap);
}

.section__header {
  max-width: 38rem;
  margin-bottom: clamp(2rem, 5vw, 3rem);
}

.section__header p {
  color: var(--color-subtext);
  font-size: 1.125rem;
  margin: 0;
}

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

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: box-shadow 300ms var(--ease-out), transform 300ms var(--ease-out);
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.card__icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background: var(--color-bg-2);
}

.card__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.card h3 {
  margin-bottom: 0.25rem;
}

.card p {
  margin: 0;
  color: var(--color-subtext);
  font-size: 0.9875rem;
}

.tag {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: var(--color-bg-2);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-subtext);
}

/* Closing call-to-action band */
.cta-band {
  margin-top: var(--section-gap);
  padding: clamp(2.5rem, 7vw, 4.5rem) 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-ink);
  color: var(--color-on-ink);
  text-align: center;
}

.cta-band p {
  max-width: 30rem;
  margin: 0 auto 1.75rem;
  opacity: 0.8;
}

.cta-band .btn-row {
  justify-content: center;
}

.cta-band .btn--primary {
  background: var(--color-on-ink);
  color: var(--color-ink);
}

.cta-band .btn--secondary {
  color: inherit;
  border-color: color-mix(in srgb, var(--color-on-ink) 35%, transparent);
}

.cta-band .btn--secondary:hover {
  background: color-mix(in srgb, var(--color-on-ink) 12%, transparent);
}

.cta-band :focus-visible {
  outline-color: var(--color-on-ink);
}

/* --------------------------------------------------------------------------
   7. Prose pages (privacy, terms, support)
   -------------------------------------------------------------------------- */

.page-header {
  padding-block: clamp(3rem, 7vw, 5rem) 0;
}

.page-header p {
  color: var(--color-subtext);
  font-size: 1.125rem;
  max-width: 38rem;
  margin-bottom: 0;
}

.page-header .meta {
  display: block;
  margin-bottom: 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-subtext);
}

.prose {
  padding-top: clamp(2rem, 5vw, 3rem);
}

.prose h2 {
  font-size: 1.375rem;
  margin-top: 2.5em;
  padding-top: 1.25em;
  border-top: 1px solid var(--color-divider);
}

.prose h2:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.prose ul {
  padding-left: 1.25rem;
  margin: 0 0 1em;
}

.prose li {
  margin-bottom: 0.375em;
}

.prose li::marker {
  color: var(--color-subtext);
}

/* Placeholder text pending legal review */
.todo {
  display: block;
  margin: 1em 0;
  padding: 0.875rem 1.125rem;
  border-left: 3px solid var(--color-ink);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-bg-2);
  font-size: 0.9375rem;
  color: var(--color-subtext);
}

.todo strong {
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   8. FAQ (support page)
   -------------------------------------------------------------------------- */

.faq {
  display: grid;
  gap: 0.75rem;
}

.faq details {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.125rem 1.375rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius-md);
}

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

.faq summary::after {
  content: "";
  flex: none;
  width: 0.625rem;
  height: 0.625rem;
  border-right: 2px solid var(--color-subtext);
  border-bottom: 2px solid var(--color-subtext);
  transform: rotate(45deg);
  transition: transform 200ms var(--ease-out);
}

.faq details[open] summary::after {
  transform: rotate(225deg);
}

.faq .faq__body {
  padding: 0 1.375rem 1.25rem;
  color: var(--color-subtext);
}

.faq .faq__body p:last-child {
  margin-bottom: 0;
}

.contact-card {
  margin-top: 2.5rem;
  text-align: center;
  padding: 2.5rem 1.5rem;
}

.contact-card p {
  color: var(--color-subtext);
  max-width: 28rem;
  margin-inline: auto;
}

/* --------------------------------------------------------------------------
   9. Invite & 404 (centered stage layouts)
   -------------------------------------------------------------------------- */

.stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 4rem);
  padding-block: 3rem;
  text-align: center;
}

.stage__card {
  width: 100%;
  max-width: 30rem;
  padding: clamp(2rem, 6vw, 3rem);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.stage__card:hover {
  transform: none;
}

.stage__icon {
  width: 4.5rem;
  height: 4.5rem;
  margin: 0 auto 1.5rem;
  display: grid;
  place-items: center;
  border-radius: var(--radius-lg);
  background: var(--color-bg-2);
}

.stage__icon svg {
  width: 2.25rem;
  height: 2.25rem;
}

.stage h1 {
  font-size: clamp(1.5rem, 4vw, 1.875rem);
}

.stage .lede {
  color: var(--color-subtext);
  text-wrap: pretty;
}

.invite-token {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-pill);
  background: var(--color-bg-2);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-subtext);
}

.invite-steps {
  margin: 1.5rem 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  text-align: left;
  display: grid;
  gap: 0.875rem;
}

.invite-steps li {
  display: flex;
  gap: 0.875rem;
  align-items: baseline;
  color: var(--color-subtext);
  font-size: 0.9375rem;
}

.invite-steps li::before {
  counter-increment: step;
  content: counter(step);
  flex: none;
  display: inline-grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--color-ink);
  color: var(--color-on-ink);
  font-size: 0.75rem;
  font-weight: 700;
  transform: translateY(0.2em);
}

.invite-actions {
  display: grid;
  gap: 0.75rem;
  justify-items: stretch;
}

.invite-actions .btn {
  width: 100%;
}

.error-code {
  font-size: clamp(5rem, 20vw, 9rem);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  line-height: 1;
  color: var(--color-divider);
  user-select: none;
}

/* --------------------------------------------------------------------------
   10. Motion
   -------------------------------------------------------------------------- */

/* Elements revealed on scroll (script.js adds .is-visible). The default
   state is fully visible so content never hides if JavaScript is off;
   the .js class is set on <html> by script.js before first paint. */
.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration) var(--ease-out),
    transform var(--duration) var(--ease-out);
}

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

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.fade-up {
  animation: fade-up 700ms var(--ease-out) backwards;
}

.fade-up--late {
  animation-delay: 120ms;
}

@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;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}