/* ==========================================================================
   ClimbLog site shell — reset, layout, and shared components.
   Depends on tokens.css. Load order: tokens.css, then this file.
   Page-specific rules belong in a <style> block on that page, not here.
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--cl-font);
  font-size: var(--cl-text-md);
  line-height: var(--cl-leading-normal);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--accent); }
a:hover { color: var(--accent-hover); }

:focus-visible {
  outline: 2px solid var(--cl-brand);
  outline-offset: 3px;
  border-radius: var(--cl-radius-sm);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--cl-brand);
  color: #fff;
  padding: var(--cl-space-sm) var(--cl-space);
  z-index: 200;
  border-radius: 0 0 var(--cl-radius-md) 0;
}
.skip-link:focus { left: 0; }

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

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

.container { max-width: var(--cl-container); margin: 0 auto; padding-inline: var(--cl-space-xl); }
.container-narrow { max-width: var(--cl-container-narrow); margin: 0 auto; padding-inline: var(--cl-space-xl); }

.section { padding-block: var(--cl-space-5xl); }
.section-tight { padding-block: var(--cl-space-4xl); }

.eyebrow {
  font-size: var(--cl-text-xs);
  font-weight: var(--cl-weight-bold);
  letter-spacing: var(--cl-tracking-widest);
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--cl-space-md);
}

h1, h2, h3, h4 {
  line-height: var(--cl-leading-tight);
  letter-spacing: var(--cl-tracking-tight);
  font-weight: var(--cl-weight-bold);
  text-wrap: balance;
}

h1 { font-size: clamp(2.25rem, 6vw, 3.75rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 4vw, var(--cl-text-4xl)); font-weight: 800; }
h3 { font-size: var(--cl-text-lg); }

.lede {
  font-size: var(--cl-text-md);
  color: var(--text-secondary);
  max-width: 56ch;
  text-wrap: pretty;
}

/* Headings carry no bottom margin of their own, so a paragraph set directly
   under one sits right against it. This is the breathing room. */
h2 + .lede,
h2 + p,
.page-header h1 + p { margin-top: var(--cl-space-md); }

/* ---- Buttons ------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--cl-space-sm);
  padding: 0.8rem 1.4rem;
  border-radius: var(--cl-radius-md);
  border: 1.5px solid transparent;
  font-family: inherit;
  font-size: var(--cl-text-base);
  font-weight: var(--cl-weight-semibold);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--cl-transition), border-color var(--cl-transition),
              transform var(--cl-transition), color var(--cl-transition);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn svg { flex-shrink: 0; }

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

.btn-ghost {
  background: color-mix(in srgb, var(--text) 8%, transparent);
  border-color: color-mix(in srgb, var(--text) 24%, transparent);
  color: var(--text);
}
.btn-ghost:hover {
  background: color-mix(in srgb, var(--text) 14%, transparent);
  border-color: color-mix(in srgb, var(--text) 42%, transparent);
  color: var(--text);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cl-space);
}
.btn-row.center { justify-content: center; }

/* ---- Cards --------------------------------------------------------------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--cl-radius-lg);
  padding: var(--cl-space-xl);
}

.card-hover { transition: box-shadow var(--cl-transition), transform var(--cl-transition), border-color var(--cl-transition); }
.card-hover:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}

.card h3 { margin-bottom: var(--cl-space-sm); color: var(--text); }
.card p { font-size: var(--cl-text-base); color: var(--text-secondary); text-wrap: pretty; }

.grid {
  display: grid;
  gap: var(--cl-space-lg);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 270px), 1fr));
}

.icon-badge {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: var(--cl-radius-md);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent);
  margin-bottom: var(--cl-space);
}

/* ---- Nav ----------------------------------------------------------------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--cl-nav-height);
  background: rgba(36,36,52,0.88);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.09);
  color: #F0F0FF;
}

.site-nav .container {
  display: flex;
  align-items: center;
  gap: var(--cl-space-lg);
  min-height: var(--cl-nav-height);
  padding-block: var(--cl-space-sm);
  flex-wrap: wrap;
}

/* The links push themselves right, so brand | links | toggle reads as one
   right-aligned group on desktop. On narrow screens the toggle jumps up to sit
   beside the brand and the links take their own full-width row - see the
   max-width: 640px block at the bottom of this file. */
.site-nav .nav-links { margin-left: auto; }

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--cl-space-sm);
  color: #fff;
  text-decoration: none;
  font-size: var(--cl-text-lg);
  font-weight: var(--cl-weight-bold);
  letter-spacing: var(--cl-tracking-tight);
}
.nav-brand:hover { color: #fff; }
.nav-brand svg { color: var(--cl-brand); }

/* The masthead lockup runs larger than the footer one, which keeps .nav-brand's
   base size. The svg sizes here override the width/height attributes in the
   markup, so the mark scales without touching seven files. */
.site-nav .nav-brand { font-size: var(--cl-text-2xl); }
.site-nav .nav-brand svg { width: 44px; height: 44px; }

/* Footer mark runs ahead of its wordmark too, just at a smaller step. */
.site-footer .nav-brand svg { width: 28px; height: 28px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--cl-space-lg);
  list-style: none;
  flex-wrap: wrap;
}

.nav-links a {
  color: rgba(240,240,255,0.72);
  text-decoration: none;
  font-size: var(--cl-text-base);
  font-weight: var(--cl-weight-medium);
  transition: color var(--cl-transition);
}
.nav-links a:hover { color: #fff; }
.nav-links a[aria-current='page'] { color: #fff; font-weight: var(--cl-weight-semibold); }

/* Beta invite - the one nav item that should read as an action. */
.nav-links a.nav-cta {
  padding: 0.4rem 0.85rem;
  border-radius: var(--cl-radius-full);
  border: 1px solid color-mix(in srgb, var(--cl-brand) 55%, transparent);
  background: color-mix(in srgb, var(--cl-brand) 18%, transparent);
  color: #fff;
  font-weight: var(--cl-weight-semibold);
  white-space: nowrap;
  transition: background var(--cl-transition), border-color var(--cl-transition);
}
.nav-links a.nav-cta:hover {
  background: color-mix(in srgb, var(--cl-brand) 32%, transparent);
  border-color: var(--cl-brand);
}

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

.site-footer {
  background: #1B1B28;
  color: rgba(240,240,255,0.55);
  padding-block: var(--cl-space-3xl);
  font-size: var(--cl-text-base);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--cl-space-xl);
  align-items: center;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cl-space-lg);
}

.site-footer a {
  color: rgba(240,240,255,0.72);
  text-decoration: none;
  transition: color var(--cl-transition);
}
.site-footer a:hover { color: #fff; }

.footer-legal {
  margin-top: var(--cl-space-xl);
  padding-top: var(--cl-space);
  border-top: 1px solid rgba(255,255,255,0.07);
  font-size: var(--cl-text-sm);
  color: rgba(240,240,255,0.42);
}

/* ---- Theme toggle -------------------------------------------------------- */

.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  border-radius: var(--cl-radius-full);
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.06);
  color: rgba(240,240,255,0.8);
  cursor: pointer;
  transition: background var(--cl-transition), color var(--cl-transition);
}
.theme-toggle:hover { background: rgba(255,255,255,0.14); color: #fff; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme='dark'] .theme-toggle .icon-sun { display: block; }
:root[data-theme='dark'] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme='light']) .theme-toggle .icon-moon { display: none; }
}

/* ---- Store badges -------------------------------------------------------- */

.store-btn { padding: 0.7rem 1.3rem; }
.store-btn small {
  display: block;
  font-size: var(--cl-text-xs);
  font-weight: var(--cl-weight-medium);
  opacity: 0.72;
  letter-spacing: var(--cl-tracking-wide);
  text-transform: uppercase;
}
.store-btn b { font-size: var(--cl-text-base); font-weight: var(--cl-weight-semibold); }
.store-btn span { text-align: left; line-height: 1.15; }

.store-btn.is-pending {
  cursor: default;
  opacity: 0.72;
}
.store-btn.is-pending:hover { transform: none; }

/* Beta buttons reuse the store-badge shape, so they inherit .store-btn and
   only need the pending state wired to their own class. */
.btn.is-pending { cursor: default; opacity: 0.72; }
.btn.is-pending:hover { transform: none; }

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

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ---- Sub-page header ----------------------------------------------------- */

.page-header {
  background: #242434;
  color: #F0F0FF;
  padding-block: var(--cl-space-4xl);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: -60% -20% auto auto;
  width: 620px; height: 620px;
  background: radial-gradient(circle, rgba(79,142,247,0.18) 0%, rgba(79,142,247,0) 62%);
  pointer-events: none;
}

.page-header .container { position: relative; }
.page-header h1 { font-size: clamp(1.9rem, 4vw, var(--cl-text-4xl)); margin-bottom: var(--cl-space-sm); }
.page-header p { color: rgba(240,240,255,0.66); max-width: 60ch; }

.page-body { padding-block: var(--cl-space-3xl) var(--cl-space-5xl); }

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

.form-group { margin-bottom: var(--cl-space-lg); }

label {
  display: block;
  font-size: var(--cl-text-base);
  font-weight: var(--cl-weight-semibold);
  color: var(--text);
  margin-bottom: var(--cl-space-xs);
}

input[type='text'],
input[type='email'],
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--cl-radius-md);
  font-size: var(--cl-text-base);
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  transition: border-color var(--cl-transition), background var(--cl-transition);
  appearance: none;
}

input[type='text']:focus,
input[type='email']:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
}

textarea { resize: vertical; min-height: 140px; }

select {
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
                    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 2.4rem;
}

/* ---- Prose (legal pages) ------------------------------------------------- */

.prose { max-width: 72ch; }
.prose h2 { font-size: var(--cl-text-xl); margin-top: var(--cl-space-3xl); margin-bottom: var(--cl-space-md); }
.prose h3 { font-size: var(--cl-text-md); margin-top: var(--cl-space-xl); margin-bottom: var(--cl-space-sm); }
.prose p, .prose li { color: var(--text-secondary); margin-bottom: var(--cl-space); }
.prose ul, .prose ol { padding-left: var(--cl-space-xl); }
.prose strong { color: var(--text); }

/* ---- Legal pages (privacy, terms) ---------------------------------------
   Two-column: sticky table of contents beside the article.
   ------------------------------------------------------------------------ */

.legal-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: var(--cl-space-4xl);
  align-items: start;
}

.toc {
  position: sticky;
  top: calc(var(--cl-nav-height) + var(--cl-space-lg));
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--cl-radius-lg);
  padding: var(--cl-space-lg);
  max-height: calc(100vh - var(--cl-nav-height) - var(--cl-space-3xl));
  overflow-y: auto;
}

.toc-label {
  font-size: var(--cl-text-xs);
  font-weight: var(--cl-weight-bold);
  letter-spacing: var(--cl-tracking-widest);
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--cl-space-md);
}

.toc ol { list-style: none; counter-reset: toc; padding: 0; margin: 0; }

.toc li { counter-increment: toc; margin-bottom: var(--cl-space-sm); }

.toc a {
  display: block;
  font-size: var(--cl-text-sm);
  line-height: 1.4;
  color: var(--text-secondary);
  text-decoration: none;
  padding-left: 1.6rem;
  position: relative;
  transition: color var(--cl-transition);
}

.toc a::before {
  content: counter(toc) '.';
  position: absolute;
  left: 0;
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
}

.toc a:hover { color: var(--accent); }

.article { max-width: 74ch; }
.article h2 {
  font-size: var(--cl-text-xl);
  margin-top: var(--cl-space-4xl);
  margin-bottom: var(--cl-space);
  scroll-margin-top: calc(var(--cl-nav-height) + var(--cl-space-lg));
}
.article h2:first-child { margin-top: 0; }
.article h3 { font-size: var(--cl-text-md); margin-top: var(--cl-space-xl); margin-bottom: var(--cl-space-sm); }
.article p, .article li { color: var(--text-secondary); margin-bottom: var(--cl-space); }
.article ul, .article ol { padding-left: var(--cl-space-xl); margin-bottom: var(--cl-space); }
.article strong { color: var(--text); font-weight: var(--cl-weight-semibold); }
.article table { width: 100%; border-collapse: collapse; margin-bottom: var(--cl-space-lg); font-size: var(--cl-text-base); }
.article th, .article td { text-align: left; padding: var(--cl-space-sm) var(--cl-space-md); border-bottom: 1px solid var(--border); }
.article th { color: var(--text); font-weight: var(--cl-weight-semibold); }
.article td { color: var(--text-secondary); }

.table-wrap { overflow-x: auto; }

.contact-box,
.note {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--cl-radius-md);
  padding: var(--cl-space-lg);
  margin-bottom: var(--cl-space-lg);
}
.contact-box p:last-child,
.note p:last-child { margin-bottom: 0; }

@media (max-width: 900px) {
  .legal-layout { grid-template-columns: 1fr; gap: var(--cl-space-xl); }
  .toc { position: static; max-height: none; }
}

/* Phone nav: brand and the theme toggle share the top row, links wrap below.
   Without this the toggle wraps onto a third row of its own, floating alone
   under the links on the left. */
@media (max-width: 640px) {
  .site-nav .container { gap: var(--cl-space-sm) var(--cl-space-lg); }
  .site-nav .nav-brand { order: 1; }
  .site-nav .theme-toggle { order: 2; margin-left: auto; }
  .site-nav .nav-links { order: 3; flex-basis: 100%; margin-left: 0; }
}