/* ============================================================
   Calmer Walks — shared design system
   ============================================================ */

:root{
  /* — light (brand default) — */
  --bg:            #F4F0E6;
  --bg-deep:       #102D23;
  --surface:       #FBF8F1;
  --surface-2:     #EDE7D6;
  --ink:           #29312D;
  --ink-soft:      #5C6459;
  --ink-on-deep:      #F4F0E6;
  --ink-on-deep-soft: #C7D0C6;
  --olive:         #A7AE94;
  --olive-ink:     #5F6652;
  --sage:          #E4E6D9;
  --terracotta:    #B86F52;
  --terracotta-ink:#8C4F37;
  --line:          rgba(41,49,45,0.15);
  --line-on-deep:  rgba(244,240,230,0.20);
  --shadow: 0 1px 2px rgba(16,45,35,0.06), 0 8px 24px rgba(16,45,35,0.06);

  --font-display: 'Fraunces', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
  --font-body: 'Karla', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;

  --max: 1180px;
  --gutter: clamp(20px, 5vw, 64px);

  color-scheme: light;
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:            #14231C;
    --bg-deep:       #0A1712;
    --surface:       #1B2C23;
    --surface-2:     #223228;
    --ink:           #EDE7D6;
    --ink-soft:      #AEB6A6;
    --ink-on-deep:      #F1ECDD;
    --ink-on-deep-soft: #B9C2B0;
    --olive:         #8B9478;
    --olive-ink:     #C9CFBD;
    --sage:          #23362B;
    --terracotta:    #D08A66;
    --terracotta-ink:#F0C4AC;
    --line:          rgba(237,231,214,0.14);
    --line-on-deep:  rgba(244,240,230,0.16);
    --shadow: 0 1px 2px rgba(0,0,0,0.25), 0 8px 24px rgba(0,0,0,0.30);
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --bg:            #14231C;
  --bg-deep:       #0A1712;
  --surface:       #1B2C23;
  --surface-2:     #223228;
  --ink:           #EDE7D6;
  --ink-soft:      #AEB6A6;
  --ink-on-deep:      #F1ECDD;
  --ink-on-deep-soft: #B9C2B0;
  --olive:         #8B9478;
  --olive-ink:     #C9CFBD;
  --sage:          #23362B;
  --terracotta:    #D08A66;
  --terracotta-ink:#F0C4AC;
  --line:          rgba(237,231,214,0.14);
  --line-on-deep:  rgba(244,240,230,0.16);
  --shadow: 0 1px 2px rgba(0,0,0,0.25), 0 8px 24px rgba(0,0,0,0.30);
  color-scheme: dark;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible{
  outline: 2px solid var(--terracotta);
  outline-offset: 3px;
}
::selection{ background: var(--terracotta); color: var(--ink-on-deep); }

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.12;
  margin: 0 0 0.5em;
  text-wrap: balance;
  color: inherit;
}
h1{ font-size: clamp(2.4rem, 5vw, 4.1rem); font-weight: 500; letter-spacing: -0.01em; }
h2{ font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
h3{ font-size: clamp(1.25rem, 2vw, 1.55rem); }
p{ margin: 0 0 1.1em; color: var(--ink-soft); }
p.lede{ font-size: 1.2rem; color: var(--ink); }

.container{
  max-width: var(--max);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--terracotta-ink);
  margin-bottom: 0.9em;
}
.eyebrow::before{
  content: "";
  width: 22px; height: 1px;
  background: var(--terracotta);
  display: inline-block;
}
.eyebrow.on-deep{ color: var(--olive); }
.eyebrow.on-deep::before{ background: var(--olive); }

hr.rule{ border: none; border-top: 1px solid var(--line); margin: 0; }

/* ---------- buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85em 1.5em;
  border-radius: 3px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, opacity .15s ease;
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{ background: var(--terracotta); color: #FBF8F1; }
.btn-primary:hover{ background: var(--terracotta-ink); }
.btn-dark{ background: var(--bg-deep); color: var(--ink-on-deep); }
.btn-dark:hover{ opacity: 0.88; }
.btn-outline{ background: transparent; border-color: var(--ink); color: var(--ink); }
.btn-outline:hover{ background: var(--ink); color: var(--bg); }
.btn-outline-deep{ background: transparent; border-color: var(--line-on-deep); color: var(--ink-on-deep); }
.btn-outline-deep:hover{ background: rgba(244,240,230,0.1); }
.btn-ghost{ padding-inline: 0; color: var(--terracotta-ink); font-weight: 700; }
.btn-ghost::after{ content: "→"; margin-left: 0.4em; transition: transform .15s ease; display: inline-block; }
.btn-ghost:hover::after{ transform: translateX(3px); }

/* ---------- header / nav ---------- */
.site-header{
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 18px;
  gap: 24px;
}
.brand{
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: -0.01em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 0.4em;
}
.brand .mark{
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--terracotta);
  display: inline-block;
  transform: translateY(-2px);
}
.nav-links{
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a{
  text-decoration: none;
  font-size: 0.93rem;
  font-weight: 600;
  color: var(--ink-soft);
  padding-block: 4px;
  border-bottom: 1px solid transparent;
}
.nav-links a:hover, .nav-links a[aria-current="page"]{
  color: var(--ink);
  border-color: var(--terracotta);
}
.nav-cta{ display: flex; align-items: center; gap: 14px; }
.nav-toggle{
  display: none;
  background: none; border: 1px solid var(--line); border-radius: 3px;
  width: 42px; height: 38px;
  cursor: pointer;
  color: var(--ink);
  align-items: center; justify-content: center;
}
.nav-toggle svg{ width: 18px; height: 18px; }

@media (max-width: 860px){
  .nav-links{
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 10px var(--gutter) 20px;
    display: none;
  }
  .nav-links.open{ display: flex; }
  .nav-links a{ width: 100%; padding: 10px 0; }
  .nav-toggle{ display: inline-flex; }
  .nav-cta .btn span.long{ display: none; }
}

/* ---------- sections ---------- */
.section{ padding-block: clamp(56px, 9vw, 108px); }
.section-tight{ padding-block: clamp(36px, 5vw, 56px); }
.section-alt{ background: var(--surface-2); }
.section-deep{
  background: var(--bg-deep);
  color: var(--ink-on-deep);
}
.section-deep p{ color: var(--ink-on-deep-soft); }
.section-deep h1, .section-deep h2, .section-deep h3{ color: var(--ink-on-deep); }

.split{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
}
.split.reverse .col-media{ order: 2; }
@media (max-width: 860px){
  .split{ grid-template-columns: 1fr; }
  .split.reverse .col-media{ order: 0; }
}

.grid-3{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-2{ display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
@media (max-width: 860px){
  .grid-3{ grid-template-columns: 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
}

/* ---------- photo placeholder ---------- */
.ph{
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 4/5;
  background:
    radial-gradient(120% 90% at 78% 8%, rgba(244,240,230,0.5), transparent 55%),
    linear-gradient(155deg, #2A4B3B 0%, #16342A 38%, #0F241C 68%, #0A1712 100%);
  display: flex; align-items: flex-end;
  isolation: isolate;
}
.ph::after{
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(60% 50% at 30% 100%, rgba(184,111,82,0.35), transparent 70%);
  mix-blend-mode: screen;
}
.ph.wide{ aspect-ratio: 16/10; }
.ph.square{ aspect-ratio: 1/1; }
.ph .ph-label{
  position: relative; z-index: 1;
  margin: 18px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(244,240,230,0.75);
  border: 1px solid rgba(244,240,230,0.35);
  padding: 6px 10px;
  border-radius: 3px;
  background: rgba(10,23,18,0.35);
  backdrop-filter: blur(3px);
}
.ph svg.trail{ position:absolute; inset:0; width:100%; height:100%; opacity:.55; }

/* book mockup — recreates the real Calmer Walks cover as a tilted panel */
.book{
  aspect-ratio: 3/4;
  border-radius: 3px;
  position: relative;
  background: linear-gradient(160deg, #143327 0%, #0E241C 100%);
  box-shadow: var(--shadow), 0 30px 60px rgba(10,23,18,0.35);
  transform: perspective(900px) rotateY(-8deg) rotateX(1deg);
  padding: clamp(18px,4vw,34px);
  display: flex; flex-direction: column; justify-content: flex-end;
  color: #F4F0E6;
  overflow: hidden;
}
.book::before{
  content:"";
  position:absolute; inset:0;
  background: radial-gradient(90% 70% at 15% 0%, rgba(167,174,148,0.35), transparent 60%);
}
.book .book-eyebrow{ position: relative; font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: #C7D0C6; margin-bottom: .6em; }
.book .book-title{ position: relative; font-family: var(--font-display); font-size: clamp(1.7rem, 4vw, 2.5rem); font-weight: 600; line-height: 1; margin-bottom: .3em; }
.book .book-sub{ position: relative; font-size: .85rem; color: #C7D0C6; max-width: 20ch; }

/* ---------- real photos ---------- */
.ph-photo{
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 4/5;
  box-shadow: var(--shadow);
}
.ph-photo.wide{ aspect-ratio: 16/10; }
.ph-photo.square{ aspect-ratio: 1/1; }
.ph-photo img{ width: 100%; height: 100%; object-fit: cover; display: block; }

.book-photo{
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 3/4;
  box-shadow: var(--shadow), 0 24px 50px rgba(16,45,35,0.18);
}
.book-photo img{ width: 100%; height: 100%; object-fit: cover; display: block; }

/* ---------- cards ---------- */
.card{
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 26px;
}
.card h3{ margin-bottom: 0.4em; }
.card p{ margin-bottom: 0; }

.tag-list{ display:flex; flex-wrap:wrap; gap:8px; margin: 0 0 1em; }
.tag{
  font-size: 0.72rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
  background: var(--sage); color: var(--olive-ink);
  padding: 5px 10px; border-radius: 3px;
}

.callout{
  background: var(--sage);
  border-left: 3px solid var(--olive);
  border-radius: 3px;
  padding: 20px 24px;
  margin: 0 0 1.4em;
}
.callout p:last-child{ margin-bottom: 0; }
.callout strong{ color: var(--ink); }

/* ---------- chapters list (guide page) ---------- */
.chapters{ list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.chapters li{
  display: grid; grid-template-columns: 48px 1fr; gap: 18px;
  padding: 18px 0; border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.chapters .num{ font-family: var(--font-display); color: var(--terracotta-ink); font-size: 1rem; }
.chapters .name{ font-weight: 600; }
.chapters .desc{ color: var(--ink-soft); font-size: .93rem; margin-top: 2px; }

/* ---------- article / resource cards ---------- */
.article-card{ display:flex; flex-direction:column; gap: 16px; text-decoration:none; color: inherit; }
.article-card .ph{ aspect-ratio: 16/11; }
.article-card .meta{ font-size: .74rem; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color: var(--terracotta-ink); }
.article-card h3{ margin-bottom: 6px; }
.article-card p{ margin-bottom: 8px; }
.article-card .read{ font-weight:700; font-size:.88rem; color: var(--ink); display:inline-flex; align-items:center; gap:.4em; }
.article-card .read::after{ content:"→"; transition: transform .15s ease; }
.article-card:hover .read::after{ transform: translateX(3px); }

.resource-card{ display:flex; flex-direction:column; gap: 14px; }
.resource-card .ph{ aspect-ratio: 4/3; }

/* ---------- footer ---------- */
.site-footer{ background: var(--bg-deep); color: var(--ink-on-deep-soft); padding-block: 56px 30px; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 40px; }
.footer-grid h4{ color: var(--ink-on-deep); font-family: var(--font-body); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 14px; }
.footer-grid ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px; }
.footer-grid a{ text-decoration:none; color: var(--ink-on-deep-soft); font-size: .93rem; }
.footer-grid a:hover{ color: var(--ink-on-deep); }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; padding-top: 26px; border-top: 1px solid var(--line-on-deep); font-size: .82rem; }
@media (max-width: 760px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }

/* ---------- article reading page ---------- */
.prose{ max-width: 68ch; margin: 0 auto; }
.prose h2{ margin-top: 1.6em; }
.prose h3{ margin-top: 1.3em; }
.prose ul, .prose ol{ color: var(--ink-soft); padding-left: 1.2em; }
.prose li{ margin-bottom: 0.5em; }
.prose .callout{ margin-block: 1.6em; }
.article-hero-meta{ display:flex; gap: 14px; align-items:center; color: var(--ink-soft); font-size:.88rem; margin-bottom: 1.4em; }
.article-hero-meta .dot{ width:3px; height:3px; border-radius:50%; background: var(--ink-soft); }

/* ---------- faq ---------- */
.faq-item{ border-bottom: 1px solid var(--line); padding-block: 18px; }
.faq-item summary{ cursor: pointer; font-weight: 600; list-style: none; display:flex; justify-content:space-between; gap: 16px; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:"+"; font-family: var(--font-display); font-size: 1.3rem; color: var(--terracotta); flex-shrink:0; }
.faq-item[open] summary::after{ content:"–"; }
.faq-item p{ margin-top: 12px; }

/* ---------- filters (articles page) ---------- */
.filters{ display:flex; flex-wrap:wrap; gap:10px; margin-bottom: 36px; }
.filter-btn{
  font-size:.82rem; font-weight:700; padding: 8px 14px; border-radius: 3px;
  border: 1px solid var(--line); background: transparent; color: var(--ink-soft); cursor:pointer;
}
.filter-btn:hover{ border-color: var(--ink); color: var(--ink); }
.filter-btn.is-active{ background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* ---------- misc ---------- */
.center{ text-align:center; }
.stack{ display:flex; flex-direction:column; gap: 12px; }
.row{ display:flex; align-items:center; gap: 12px; }
.small{ font-size: .85rem; }
.muted{ color: var(--ink-soft); }
.mt-0{ margin-top:0; }
.disclaimer{ font-size:.85rem; color: var(--ink-soft); border-top:1px solid var(--line); padding-top:18px; margin-top: 40px; }