/* Filozofie jednoduše — Design system */
@font-face { font-family: 'Inter'; src: url('../fonts/inter-400.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('../fonts/inter-600.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('../fonts/inter-700.woff2') format('woff2'); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: 'Fraunces'; src: url('../fonts/fraunces-600.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; }

:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --beige: #f2ece1;
  --beige-2: #e8dfce;
  --gray: #f4f5f7;
  --gray-2: #e6e8ec;
  --ink: #1c2230;
  --ink-2: #454e60;
  --muted: #6c7385;
  --blue: #7fa8c9;
  --blue-2: #b9d0e2;
  --blue-ink: #315b7f;
  --accent: #d9c9a3;
  --line: #e7e2d6;
  --radius: 18px;
  --radius-lg: 26px;
  --shadow-sm: 0 1px 2px rgba(20,25,40,.04), 0 2px 8px rgba(20,25,40,.04);
  --shadow-md: 0 8px 30px rgba(28,34,48,.07);
  --max: 1180px;
  --font-body: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
  --font-display: 'Fraunces', Georgia, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--blue-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; color: var(--ink); line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; color: var(--ink-2); }
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eyebrow { display: inline-block; font-size: .8rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-ink); background: var(--blue-2); padding: 6px 12px; border-radius: 999px; }
.lead { font-size: 1.15rem; color: var(--ink-2); max-width: 60ch; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: .95rem; border: 1px solid transparent; cursor: pointer; transition: all .2s ease; text-decoration: none; }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--blue-ink); text-decoration: none; transform: translateY(-1px); }
.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-secondary:hover { background: var(--beige); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--gray); text-decoration: none; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251,250,247,.85);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, background .2s;
}
.nav.scrolled { border-bottom-color: var(--line); background: rgba(251,250,247,.95); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; color: var(--ink); }
.brand svg { width: 30px; height: 30px; }
.brand:hover { text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a { padding: 8px 14px; border-radius: 10px; color: var(--ink-2); font-weight: 500; font-size: .95rem; }
.nav-links a:hover { background: var(--gray); color: var(--ink); text-decoration: none; }
.nav-links a.active { color: var(--ink); background: var(--beige); }
.nav-cta { margin-left: 8px; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 10px; width: 42px; height: 42px; align-items: center; justify-content: center; cursor: pointer; }
.nav-toggle svg { width: 20px; height: 20px; stroke: var(--ink); }

@media (max-width: 900px) {
  .nav-links { position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch; background: var(--surface); padding: 16px; gap: 4px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md); transform: translateY(-120%); transition: transform .3s ease; }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 14px 16px; font-size: 1rem; }
  .nav-cta { margin: 8px 0 0; }
  .nav-toggle { display: inline-flex; }
}

/* Sections */
section { padding: 88px 0; }
@media (max-width: 700px) { section { padding: 64px 0; } }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .lead { margin: 12px auto 0; }

/* Hero */
.hero { padding-top: 72px; padding-bottom: 96px; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 64px; align-items: center; }
.hero h1 { margin-top: 18px; }
.hero .lead { margin: 16px 0 32px; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-visual { position: relative; aspect-ratio: 1/1; border-radius: var(--radius-lg); background: linear-gradient(140deg, var(--beige), var(--blue-2)); box-shadow: var(--shadow-md); display: grid; place-items: center; overflow: hidden; }
.hero-visual svg { width: 78%; height: 78%; }
.hero-badges { display: flex; gap: 24px; margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--line); }
.hero-badge { display: flex; flex-direction: column; }
.hero-badge strong { font-family: var(--font-display); font-size: 1.6rem; color: var(--ink); }
.hero-badge span { font-size: .85rem; color: var(--muted); }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } .hero-visual { max-width: 420px; margin: 0 auto; } }

/* Cards */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; } }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px; transition: transform .25s ease, box-shadow .25s ease; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card .icon { width: 48px; height: 48px; border-radius: 14px; background: var(--beige); display: grid; place-items: center; margin-bottom: 18px; }
.card .icon svg { width: 26px; height: 26px; stroke: var(--blue-ink); }
.card h3 { margin-bottom: 8px; }
.card p { margin: 0; color: var(--ink-2); font-size: .95rem; }

/* Callout */
.callout { background: var(--beige); border-left: 4px solid var(--accent); padding: 20px 24px; border-radius: 14px; margin: 24px 0; }
.callout strong { color: var(--ink); }

/* CTA banner */
.cta-banner { background: linear-gradient(135deg, var(--ink), #2a3550); color: #fff; border-radius: var(--radius-lg); padding: 56px; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-banner h2 { color: #fff; margin: 0 0 8px; }
.cta-banner p { color: rgba(255,255,255,.75); margin: 0; max-width: 46ch; }
.cta-banner .btn-primary { background: #fff; color: var(--ink); }
.cta-banner .btn-primary:hover { background: var(--beige); }

/* Testimonials slider */
.testimonials { background: var(--beige); }
.slider { position: relative; max-width: 820px; margin: 0 auto; }
.slides { overflow: hidden; border-radius: var(--radius-lg); }
.slides-track { display: flex; transition: transform .5s ease; }
.slide { min-width: 100%; padding: 40px; background: var(--surface); border-radius: var(--radius-lg); }
.slide blockquote { font-family: var(--font-display); font-size: 1.35rem; line-height: 1.5; color: var(--ink); margin: 0 0 24px; }
.slide-author { display: flex; align-items: center; gap: 14px; }
.avatar { width: 48px; height: 48px; border-radius: 50%; background: var(--blue-2); display: grid; place-items: center; color: var(--blue-ink); font-weight: 700; }
.slide-author strong { display: block; color: var(--ink); }
.slide-author span { font-size: .85rem; color: var(--muted); }
.slider-nav { display: flex; justify-content: center; gap: 8px; margin-top: 24px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--gray-2); border: none; cursor: pointer; padding: 0; transition: background .2s; }
.dot.active { background: var(--ink); }

/* FAQ */
.faq { max-width: 780px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { list-style: none; padding: 22px 0; cursor: pointer; font-weight: 600; color: var(--ink); display: flex; justify-content: space-between; align-items: center; font-size: 1.05rem; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.6rem; color: var(--muted); font-weight: 300; transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 0 22px; color: var(--ink-2); margin: 0; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
@media (max-width: 700px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat strong { display: block; font-family: var(--font-display); font-size: 2.6rem; color: var(--ink); line-height: 1; }
.stat span { color: var(--muted); font-size: .9rem; margin-top: 8px; display: block; }

/* Timeline */
.timeline { position: relative; padding-left: 32px; }
.timeline::before { content: ''; position: absolute; left: 8px; top: 8px; bottom: 8px; width: 2px; background: var(--line); }
.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item::before { content: ''; position: absolute; left: -30px; top: 8px; width: 14px; height: 14px; border-radius: 50%; background: var(--surface); border: 3px solid var(--blue-ink); }
.timeline-item h3 { margin: 0 0 4px; font-family: var(--font-body); font-size: 1rem; color: var(--muted); font-weight: 600; }
.timeline-item h4 { font-family: var(--font-display); font-size: 1.3rem; margin: 0 0 6px; color: var(--ink); }

/* Philosopher cards */
.phil { display: grid; grid-template-columns: 120px 1fr; gap: 24px; align-items: start; }
.phil-portrait { width: 120px; height: 120px; border-radius: 50%; background: linear-gradient(135deg, var(--beige), var(--blue-2)); display: grid; place-items: center; }
.phil-portrait svg { width: 60%; height: 60%; }
.phil h3 { margin: 0 0 4px; }
.phil .years { color: var(--muted); font-size: .9rem; margin-bottom: 8px; }
.phil .fact { background: var(--gray); border-radius: 12px; padding: 10px 14px; margin-top: 12px; font-size: .9rem; color: var(--ink-2); }
@media (max-width: 640px) { .phil { grid-template-columns: 1fr; text-align: center; } .phil-portrait { margin: 0 auto; } }

/* Blog */
.article-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s; }
.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.article-card .thumb { aspect-ratio: 16/10; background: linear-gradient(135deg, var(--beige), var(--blue-2)); display: grid; place-items: center; }
.article-card .thumb svg { width: 40%; height: 40%; opacity: .8; }
.article-card .body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.article-meta { display: flex; gap: 12px; align-items: center; font-size: .8rem; color: var(--muted); margin-bottom: 12px; }
.tag { background: var(--beige); color: var(--blue-ink); padding: 4px 10px; border-radius: 999px; font-weight: 600; font-size: .75rem; }
.article-card h3 { margin: 0 0 10px; font-size: 1.2rem; }
.article-card p { flex: 1; font-size: .95rem; }
.article-card .read-more { margin-top: 12px; font-weight: 600; color: var(--blue-ink); }

/* Form */
.form-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 900px) { .form-wrap { grid-template-columns: 1fr; } }
.form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; color: var(--ink); }
.field input, .field textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; font: inherit; background: var(--bg); color: var(--ink); transition: border-color .2s, box-shadow .2s; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue-ink); box-shadow: 0 0 0 3px rgba(49,91,127,.15); }
.field textarea { min-height: 130px; resize: vertical; }
.checkbox { display: flex; gap: 10px; align-items: flex-start; margin: 18px 0; font-size: .88rem; color: var(--ink-2); }
.checkbox input { margin-top: 3px; }
.form-success { display: none; padding: 14px; border-radius: 12px; background: #e7f3ea; color: #235c3a; margin-bottom: 16px; font-size: .9rem; }
.form-success.show { display: block; }
.trust-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 14px; }
.trust-list li { display: flex; gap: 12px; align-items: flex-start; font-size: .95rem; color: var(--ink-2); }
.trust-list svg { width: 22px; height: 22px; stroke: var(--blue-ink); flex-shrink: 0; margin-top: 2px; }

/* Footer */
footer { background: #14192a; color: #b7bccb; padding: 64px 0 32px; margin-top: 96px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }
footer h4 { color: #fff; font-family: var(--font-body); font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 16px; }
footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
footer a { color: #b7bccb; font-size: .9rem; }
footer a:hover { color: #fff; text-decoration: none; }
.footer-brand { color: #fff; font-family: var(--font-display); font-size: 1.3rem; display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer-brand svg { width: 30px; height: 30px; }
.footer-brand:hover { color: #fff; }
.footer-desc { font-size: .9rem; max-width: 32ch; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: .85rem; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* Page header */
.page-head { padding: 96px 0 56px; text-align: center; background: linear-gradient(180deg, var(--beige) 0%, var(--bg) 100%); }
.page-head .eyebrow { margin-bottom: 16px; }
.page-head h1 { margin: 0 0 12px; }
.page-head .lead { margin: 0 auto; }

/* Topic sections */
.topic { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 72px; }
.topic:nth-child(even) .topic-visual { order: -1; }
.topic-visual { aspect-ratio: 4/3; background: linear-gradient(135deg, var(--beige), var(--blue-2)); border-radius: var(--radius-lg); display: grid; place-items: center; }
.topic-visual svg { width: 55%; height: 55%; }
@media (max-width: 800px) { .topic { grid-template-columns: 1fr; gap: 24px; } .topic:nth-child(even) .topic-visual { order: 0; } }

/* Accessibility */
:focus-visible { outline: 2px solid var(--blue-ink); outline-offset: 2px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }