/* DreamWave site styles: night-sky dark theme by default, readable light variant. */
:root {
  --bg-top: #18143F;
  --bg-bottom: #4A1C6E;
  --bg-solid: #1E1648;
  --text: #FFFFFF;
  --text-muted: #D9D2F2;
  --accent: #BEA0FF;
  --accent-strong: #D6C2FF;
  --cta: #F0C05A;
  --cta-hover: #F6D27F;
  --cta-text: #18143F;
  --card: rgba(255, 255, 255, 0.07);
  --card-border: rgba(190, 160, 255, 0.22);
  --note-bg: rgba(240, 192, 90, 0.12);
  --note-border: rgba(240, 192, 90, 0.55);
  --shadow: 0 18px 40px rgba(8, 4, 30, 0.45);
  --radius: 20px;
  --focus: #F0C05A;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-top: #F6F2FF;
    --bg-bottom: #EDE4FB;
    --bg-solid: #F6F2FF;
    --text: #1A1538;
    --text-muted: #40395F;
    --accent: #5A35B0;
    --accent-strong: #44228F;
    --cta: #F0C05A;
    --cta-hover: #E8B23F;
    --cta-text: #18143F;
    --card: #FFFFFF;
    --card-border: rgba(90, 53, 176, 0.18);
    --note-bg: #FFF6E2;
    --note-border: #D9A23A;
    --shadow: 0 14px 32px rgba(60, 30, 120, 0.14);
    --focus: #5A35B0;
    color-scheme: light;
  }
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background-color: var(--bg-solid);
  background-image: linear-gradient(170deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

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

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  background: var(--cta);
  color: var(--cta-text);
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 700;
  z-index: 10;
}
.skip-link:focus { top: 12px; }

.container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 6vw, 3.25rem); margin: 0 0 16px; }
h2 { font-size: clamp(1.55rem, 4vw, 2.1rem); margin: 0 0 14px; }
h3 { font-size: 1.2rem; margin: 0 0 8px; }

p { margin: 0 0 16px; }
.muted { color: var(--text-muted); }

/* Header */
.site-header { padding: 18px 0; }
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.15rem;
}
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(140deg, #6B3FD0, #2A1A6A);
  display: grid; place-items: center; flex: none;
}
.brand-mark svg { width: 20px; height: 20px; }
.nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.nav a { color: var(--text-muted); text-decoration: none; font-size: 0.95rem; }
.nav a:hover { color: var(--text); }
@media (max-width: 640px) { .nav .nav-optional { display: none; } }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  background: var(--cta); color: var(--cta-text);
  font-weight: 700; font-size: 1.05rem; text-decoration: none;
  padding: 14px 26px; border-radius: 999px; min-height: 48px;
  box-shadow: 0 8px 22px rgba(240, 192, 90, 0.28);
  transition: background-color .15s ease, transform .15s ease;
}
.btn:hover { background: var(--cta-hover); color: var(--cta-text); transform: translateY(-1px); }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn-small { padding: 8px 16px; min-height: 40px; font-size: 0.92rem; box-shadow: none; }
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } .btn:hover { transform: none; } }

/* Hero */
.hero { padding: 28px 0 56px; }
.hero-grid { display: grid; gap: 36px; align-items: center; }
@media (min-width: 820px) { .hero-grid { grid-template-columns: 1.15fr 0.85fr; } }
.eyebrow { color: var(--accent); font-weight: 600; font-size: 0.95rem; letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 12px; }
.lede { font-size: 1.2rem; color: var(--text-muted); max-width: 34em; }
.hero-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 18px; margin-top: 24px; }
.hero-cta .note { color: var(--text-muted); font-size: 0.95rem; }

.shot {
  width: 100%; max-width: 300px; margin: 0 auto;
  border-radius: 28px; overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--card-border);
}
.hero .shot { max-width: 320px; }

/* Sections */
section { padding: 48px 0; }
.section-intro { max-width: 40em; margin-bottom: 28px; }

.feature {
  display: grid; gap: 28px; align-items: center;
  padding: 28px; margin-bottom: 28px;
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
}
@media (min-width: 820px) {
  .feature { grid-template-columns: 1fr 300px; gap: 48px; padding: 40px; }
  .feature.reverse { grid-template-columns: 300px 1fr; }
  .feature.reverse .feature-media { order: -1; }
}
.feature ul, .card ul { padding-left: 1.2em; margin: 0 0 12px; }
.feature li, .card li { margin-bottom: 6px; }
.fine { font-size: 0.92rem; color: var(--text-muted); }

.cards { display: grid; gap: 20px; }
@media (min-width: 700px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .cards.three { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 24px;
}
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.card .tag {
  display: inline-block; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 8px;
}

.split { display: grid; gap: 20px; }
@media (min-width: 820px) { .split { grid-template-columns: 1fr 1fr; } }

/* FAQ */
.faq details {
  background: var(--card); border: 1px solid var(--card-border); border-radius: 16px;
  padding: 0; margin-bottom: 12px;
}
.faq summary {
  cursor: pointer; font-weight: 650; padding: 18px 48px 18px 20px; position: relative; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-size: 1.4rem; color: var(--accent); line-height: 1;
}
.faq details[open] summary::after { content: "\2212"; }
.faq details > div { padding: 0 20px 18px; color: var(--text-muted); }
.faq details > div p:last-child { margin-bottom: 0; }

/* Article list */
.article-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
@media (min-width: 700px) { .article-links { grid-template-columns: 1fr 1fr; } }
.article-links a {
  display: block; height: 100%; text-decoration: none; color: var(--text);
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius); padding: 22px 24px;
}
.article-links a:hover { border-color: var(--accent); }
.article-links strong { display: block; font-size: 1.15rem; margin-bottom: 6px; }
.article-links span { color: var(--text-muted); font-size: 0.97rem; }

/* CTA band */
.cta-band {
  text-align: center; padding: 40px 24px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--card-border);
}
.cta-band p { max-width: 36em; margin-left: auto; margin-right: auto; }

/* Article pages */
.article { padding: 12px 0 40px; }
.prose { max-width: 68ch; margin: 0 auto; }
.prose h1 { font-size: clamp(1.9rem, 5.5vw, 2.6rem); }
.prose h2 { font-size: clamp(1.35rem, 3.6vw, 1.7rem); margin-top: 40px; scroll-margin-top: 16px; }
.prose h3 { margin-top: 24px; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 16px; }
.prose li { margin-bottom: 8px; }
.byline { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 24px; }
.breadcrumb { font-size: 0.92rem; margin-bottom: 18px; }
.breadcrumb ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.breadcrumb li { margin: 0; color: var(--text-muted); }
.breadcrumb li + li::before { content: "\203A"; margin-right: 6px; color: var(--text-muted); }

.toc {
  background: var(--card); border: 1px solid var(--card-border); border-radius: 16px;
  padding: 18px 22px; margin: 0 0 28px;
}
.toc h2 { font-size: 1rem; margin: 0 0 8px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--accent); }
.toc ol { margin: 0; padding-left: 1.2em; }
.toc li { margin-bottom: 4px; }

.callout {
  background: var(--note-bg); border: 1px solid var(--note-border); border-left-width: 5px;
  border-radius: 14px; padding: 16px 20px; margin: 20px 0 24px;
}
.callout p:last-child { margin-bottom: 0; }

.cta-box {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 26px; margin: 32px 0; display: grid; gap: 20px; align-items: center;
}
@media (min-width: 640px) { .cta-box { grid-template-columns: 1fr 150px; } }
.cta-box h2 { margin-top: 0; }
.cta-box .shot { max-width: 150px; border-radius: 18px; }

.related { border-top: 1px solid var(--card-border); padding-top: 24px; margin-top: 36px; }
.related h2 { font-size: 1.1rem; margin-top: 0; }

/* Footer */
.site-footer { padding: 36px 0 48px; border-top: 1px solid var(--card-border); margin-top: 24px; font-size: 0.95rem; }
.site-footer .container { display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; align-items: center; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--text); }
.site-footer p { margin: 0; color: var(--text-muted); }
.footer-note { flex-basis: 100%; font-size: 0.85rem; }

@media (max-width: 420px) {
  .btn { padding: 14px 20px; font-size: 1rem; text-align: center; }
  .btn-small { padding: 8px 14px; font-size: 0.9rem; }
  .cta-box, .feature { padding: 20px; }
}