/*
Theme Name: Nexdata
Theme URI: https://nexdata.cz
Author: Nexdata s.r.o.
Description: Vlastní téma pro web Nexdata — poradenská společnost pro enterprise architekturu, řízení kontinuity, bezpečnost, kvalitu a IT služby. Vychází z navrh/homepage_mockup_v1.html a navrh/sluzba_o*_mockup_v1.html.
Version: 0.1.0
Requires PHP: 7.4
Text Domain: nexdata
*/

:root {
  --paper: #eff1f0;
  --paper-raised: #e7eae7;
  --ink: #14161c;
  --ink-soft: #4a4e58;
  --navy: #24365b;
  --navy-soft: #4c5f88;
  --signal: #c1440e;
  --signal-soft: #e7cabb;
  --line: #d7dad3;
  --focus: #1b2a4a;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #14161c;
    --paper-raised: #1b1e26;
    --ink: #eff1f0;
    --ink-soft: #a9adb8;
    --navy: #8fa4cf;
    --navy-soft: #66799f;
    --signal: #e58248;
    --signal-soft: #4a3326;
    --line: #2b2e38;
    --focus: #8fa4cf;
  }
}
:root[data-theme="dark"] {
  --paper: #14161c;
  --paper-raised: #1b1e26;
  --ink: #eff1f0;
  --ink-soft: #a9adb8;
  --navy: #8fa4cf;
  --navy-soft: #66799f;
  --signal: #e58248;
  --signal-soft: #4a3326;
  --line: #2b2e38;
  --focus: #8fa4cf;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 {
  font-family: Charter, "Iowan Old Style", "Georgia", serif;
  font-weight: 600;
  line-height: 1.15;
  text-wrap: balance;
  margin: 0;
  color: var(--ink);
}
.mono { font-family: ui-monospace, "SF Mono", "Cascadia Code", "Consolas", monospace; }
a { color: inherit; }
img { max-width: 100%; display: block; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 clamp(20px, 4vw, 48px); }
.prose { max-width: 62ch; }

/* ---------- Header ---------- */
header.site { position: sticky; top: 0; z-index: 40; background: var(--paper); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 16px clamp(20px, 4vw, 48px); max-width: 1180px; margin: 0 auto; }
.logo-img { height: 34px; width: auto; display: block; }
.logo-img.footer { height: 30px; filter: none; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .logo-img { filter: invert(1); } }
:root[data-theme="dark"] .logo-img { filter: invert(1); }
.logo-word { font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-soft); margin-left: 8px; align-self: center; }
nav.main { display: flex; align-items: center; gap: 28px; }
nav.main > ul { list-style: none; display: flex; gap: 28px; margin: 0; padding: 0; font-size: 0.92rem; }
nav.main > ul > li { position: relative; }
nav.main > ul > li > a { text-decoration: none; padding: 8px 0; display: inline-block; }
nav.main > ul > li > a.has-caret::after { content: " ▾"; font-size: 0.7em; color: var(--ink-soft); }

.megamenu {
  position: absolute; top: 100%; left: -24px;
  background: var(--paper); border: 1px solid var(--line);
  box-shadow: 0 12px 28px rgba(0,0,0,0.12);
  padding: 20px; display: none; grid-template-columns: repeat(5, 190px); gap: 4px 20px;
  width: max-content;
}
li:hover > .megamenu, li:focus-within > .megamenu { display: grid; }
.megamenu h4 { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--navy); margin: 0 0 8px; font-family: inherit; font-weight: 700; }
.megamenu a { display: block; font-size: 0.85rem; padding: 5px 0; text-decoration: none; color: var(--ink); }
.megamenu a:hover { color: var(--signal); }
.megamenu .code { font-family: ui-monospace, monospace; color: var(--ink-soft); font-size: 0.75em; margin-right: 4px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.88rem; font-weight: 600; text-decoration: none;
  padding: 11px 20px; border-radius: 2px; border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary { background: var(--signal); color: #fff8f4; }
.btn-primary:hover { background: #a5390b; }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { border-color: var(--signal); color: var(--signal); }

/* ---------- Hero ---------- */
.hero { padding: clamp(56px, 9vw, 108px) 0 clamp(48px, 7vw, 80px); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
.eyebrow {
  font-family: ui-monospace, monospace; font-size: 0.78rem; letter-spacing: 0.05em;
  color: var(--signal); margin-bottom: 14px; display: block;
}
.hero h1 { font-size: clamp(2.3rem, 4.4vw, 3.4rem); }
.hero p.lead { margin-top: 20px; font-size: 1.1rem; color: var(--ink-soft); max-width: 46ch; }
.hero-ctas { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }

.formula-card {
  border: 1px solid var(--line); background: var(--paper-raised);
  padding: 32px; position: relative;
}
.formula-card .formula {
  font-family: ui-monospace, monospace; font-size: 2.4rem; font-weight: 600;
  letter-spacing: -0.01em; color: var(--ink);
}
.formula-card .formula sup { color: var(--signal); }
.formula-legend { margin-top: 22px; display: grid; gap: 12px; }
.formula-legend div { display: grid; grid-template-columns: 28px 1fr; gap: 10px; font-size: 0.88rem; }
.formula-legend .sym { font-family: ui-monospace, monospace; font-weight: 700; color: var(--navy); }

/* ---------- Methodology strip ---------- */
.methods { padding: 26px 0; border-bottom: 1px solid var(--line); }
.methods .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; align-items: center; justify-content: space-between; }
.methods .label { font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); }
.methods .badges { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.methods .badges span { font-family: ui-monospace, monospace; font-size: 0.82rem; color: var(--ink-soft); }

/* ---------- Section shell ---------- */
section.block { padding: clamp(56px, 8vw, 96px) 0; border-bottom: 1px solid var(--line); }
section.block.no-border { border-bottom: none; }
.section-head { display: grid; grid-template-columns: 72px 1fr; gap: 20px; margin-bottom: 40px; align-items: baseline; }
.section-head .idx { font-family: ui-monospace, monospace; color: var(--signal); font-size: 0.85rem; }
.section-head h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
.section-head p { color: var(--ink-soft); margin: 10px 0 0; max-width: 60ch; }

/* ---------- Service tiles ---------- */
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.tile {
  background: var(--paper); padding: 26px 22px; min-height: 168px;
  display: flex; flex-direction: column; gap: 10px; text-decoration: none; color: var(--ink);
  transition: background 120ms ease;
}
.tile:hover { background: var(--paper-raised); }
.tile .code { font-family: ui-monospace, monospace; font-size: 0.75rem; color: var(--signal); }
.tile h3 { font-size: 1.02rem; font-family: -apple-system, "Segoe UI", Arial, sans-serif; font-weight: 700; }
.tile p { font-size: 0.86rem; color: var(--ink-soft); margin: 0; }
@media (max-width: 900px) { .tiles { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .tiles { grid-template-columns: 1fr; } }

/* ---------- Process ---------- */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.process::before {
  content: ""; position: absolute; top: 13px; left: 0; right: 0; height: 1px; background: var(--line);
}
.step { padding-top: 0; position: relative; padding-right: 20px; }
.step .dot {
  width: 26px; height: 26px; border-radius: 50%; background: var(--paper);
  border: 2px solid var(--signal); display: flex; align-items: center; justify-content: center;
  font-family: ui-monospace, monospace; font-size: 0.72rem; color: var(--signal); font-weight: 700;
  margin-bottom: 18px; position: relative; z-index: 1;
}
.step h4 { font-size: 0.98rem; margin: 0 0 6px; }
.step p { font-size: 0.85rem; color: var(--ink-soft); margin: 0; }
@media (max-width: 800px) {
  .process { grid-template-columns: 1fr; gap: 28px; }
  .process::before { display: none; }
}

/* ---------- Addons ---------- */
.addons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.addon { background: var(--paper-raised); padding: 22px; border-left: 3px solid var(--navy); text-decoration: none; color: inherit; display: block; }
.addon .code { font-family: ui-monospace, monospace; font-size: 0.72rem; color: var(--ink-soft); }
.addon h4 { font-size: 0.98rem; margin: 6px 0; }
.addon p { font-size: 0.85rem; color: var(--ink-soft); margin: 0; }
@media (max-width: 800px) { .addons { grid-template-columns: 1fr; } }

/* ---------- Blog ---------- */
.posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.post a { text-decoration: none; color: var(--ink); display: block; }
.post .tag { font-family: ui-monospace, monospace; font-size: 0.72rem; color: var(--signal); }
.post h3 { font-size: 1.02rem; margin: 8px 0 6px; }
.post p { font-size: 0.85rem; color: var(--ink-soft); margin: 0; }
@media (max-width: 900px) { .posts { grid-template-columns: 1fr; } }

/* ---------- CTA band ---------- */
.cta-band { background: var(--navy); color: #f4f6fb; }
.cta-band h2 { color: #f4f6fb; }
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.cta-grid p { color: #c6d0e4; margin-top: 12px; max-width: 44ch; }
form.lead { display: grid; gap: 12px; }
form.lead input, form.lead textarea {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.22);
  color: #f4f6fb; padding: 12px 14px; font: inherit; border-radius: 2px;
}
form.lead input::placeholder, form.lead textarea::placeholder { color: #a9b6cf; }
form.lead label.gdpr { font-size: 0.78rem; color: #c6d0e4; display: flex; gap: 8px; align-items: flex-start; }
form.lead .btn-primary { justify-self: start; margin-top: 4px; border: none; cursor: pointer; }
@media (max-width: 800px) { .cta-grid { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
footer.site { padding: 56px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 32px; }
.footer-grid h5 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft); margin: 0 0 14px; font-family: inherit; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.footer-grid a { text-decoration: none; font-size: 0.86rem; color: var(--ink-soft); }
.footer-grid a:hover { color: var(--signal); }
.footer-bottom {
  margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 0.78rem; color: var(--ink-soft);
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

[data-reveal] { opacity: 0; transform: translateY(14px); transition: opacity 560ms ease, transform 560ms ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Doc (service subpage) ---------- */
.doc-hero { padding: clamp(40px, 7vw, 72px) 0 40px; border-bottom: 1px solid var(--line); }
.breadcrumb { font-size: 0.8rem; color: var(--ink-soft); margin-bottom: 20px; }
.breadcrumb a { color: var(--ink-soft); text-decoration: none; }
.breadcrumb a:hover { color: var(--signal); }
.doc-code { font-family: ui-monospace, monospace; color: var(--signal); font-size: 0.85rem; display: block; margin-bottom: 10px; }
.doc-hero h1 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); }
.doc-hero p.lead { margin-top: 16px; font-size: 1.05rem; color: var(--ink-soft); max-width: 62ch; }
.doc-ctas { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.doc-section { padding: clamp(36px, 6vw, 60px) 0; border-bottom: 1px solid var(--line); }
.doc-section h2 { font-size: clamp(1.25rem, 2.2vw, 1.55rem); margin-bottom: 16px; }
.doc-section .prose p { color: var(--ink-soft); max-width: 66ch; margin: 0 0 14px; }
.doc-section ul.check { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; max-width: 66ch; }
.doc-section ul.check li { padding-left: 22px; position: relative; color: var(--ink-soft); font-size: 0.95rem; }
.doc-section ul.check li::before { content: "—"; position: absolute; left: 0; color: var(--signal); }
.evidence-note { background: var(--paper-raised); border-left: 3px solid var(--navy); padding: 18px 22px; font-size: 0.85rem; color: var(--ink-soft); max-width: 66ch; }
.concept-banner { background: var(--signal-soft); color: var(--ink); font-size: 0.85rem; text-align: center; padding: 10px 16px; border-bottom: 1px solid var(--line); }

/* ---------- Mobilní navigace ---------- */
.nav-toggle {
  display: none; align-items: center; gap: 8px;
  background: none; border: 1px solid var(--ink); color: var(--ink);
  padding: 9px 14px; font-size: 0.85rem; border-radius: 2px; cursor: pointer;
  font-family: inherit;
}
.nav-toggle-icon, .nav-toggle-icon::before, .nav-toggle-icon::after {
  display: block; width: 18px; height: 2px; background: currentColor; content: "";
}
.nav-toggle-icon { position: relative; }
.nav-toggle-icon::before { position: absolute; top: -6px; }
.nav-toggle-icon::after { position: absolute; top: 6px; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }

  nav.main {
    display: none;
    position: fixed;
    top: 67px; left: 0; right: 0; bottom: 0;
    background: var(--paper);
    flex-direction: column; align-items: stretch;
    padding: 8px clamp(20px, 4vw, 48px) 32px;
    overflow-y: auto;
    border-top: 1px solid var(--line);
    z-index: 39;
  }
  nav.main.is-open { display: flex; }
  nav.main > ul { flex-direction: column; gap: 0; width: 100%; font-size: 1rem; }
  nav.main > ul > li { border-bottom: 1px solid var(--line); }
  nav.main > ul > li > a { padding: 16px 0; width: 100%; }
  nav.main .btn-primary { margin-top: 20px; width: 100%; justify-content: center; }

  .megamenu {
    position: static; display: none;
    grid-template-columns: 1fr; width: auto;
    border: none; box-shadow: none; padding: 0 0 14px;
  }
  li:hover > .megamenu, li:focus-within > .megamenu { display: none; }
  li.megamenu-open > .megamenu { display: grid; gap: 16px; }
  .megamenu > div { border-top: 1px solid var(--line); padding-top: 12px; }
  .megamenu > div:first-child { border-top: none; padding-top: 0; }

  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .header-row { flex-wrap: wrap; }
}