/* ===========================================================
   KASTL STUDIO — sdílený stylesheet
   Paleta: bílá / šedá / "laser" modrá (inspirace antikou + sken)
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  /* Barvy */
  --c-paper:      #FAFAF8;
  --c-paper-dim:  #F1F0EA;
  --c-ink:        #1A1A1A;
  --c-ink-soft:   #3A3A38;
  --c-gray:       #6B6B6B;
  --c-gray-light: #B4B2A9;
  --c-line:       #E2E2DD;
  --c-blue:       #4A7BA3;
  --c-blue-dark:  #355C7D;
  --c-blue-pale:  #DCE7EE;

  /* Typografie */
  --font-display: 'Space Grotesk', 'Source Sans 3', Arial, sans-serif;
  --font-body:    'Source Sans 3', Arial, sans-serif;
  --font-mono:    'Space Grotesk', monospace;

  /* Layout */
  --max-width: 1120px;
  --radius: 3px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--c-paper);
  color: var(--c-ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* ===========================================================
   HLAVIČKA
   =========================================================== */

.site-header {
  background: var(--c-paper);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  padding-bottom: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand img {
  width: 104px;
  height: 104px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
  font-family: var(--font-display);
}

.brand-text .kastl,
.brand-text .brand-3d-kastl {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--c-ink);
}

.brand-text .divider {
  width: 100%;
  height: 1px;
  background: var(--c-blue);
  margin: 6px 0;
}

.brand-text .studio {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--c-gray);
}

.main-nav {
  display: flex;
  gap: 22px;
  font-size: 13.5px;
  color: var(--c-gray);
  white-space: nowrap;
}

.main-nav a {
  position: relative;
  padding: 4px 0;
  transition: color 0.15s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--c-ink);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1.5px;
  background: var(--c-blue);
}

.nav-toggle {
  display: none;
}

/* ===========================================================
   TLAČÍTKA
   =========================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 0.5px solid transparent;
  transition: opacity 0.15s ease, background 0.15s ease;
}

.btn-primary {
  background: var(--c-ink);
  color: var(--c-paper);
}

.btn-primary:hover { opacity: 0.85; }

.btn-secondary {
  background: transparent;
  border-color: var(--c-gray-light);
  color: var(--c-ink);
}

.btn-secondary:hover { border-color: var(--c-ink); }

.hero-photo .btn-secondary {
  border-color: rgba(250,250,248,0.45);
  color: #FAFAF8;
}

.hero-photo .btn-secondary:hover {
  border-color: #FAFAF8;
}

.hero-photo .btn-primary {
  border-color: rgba(250,250,248,0.45);
}

.hero-photo .btn-primary:hover {
  border-color: #FAFAF8;
}

/* ===========================================================
   HERO
   =========================================================== */

.hero {
  position: relative;
  height: 480px;
  display: flex;
  align-items: center;
  padding: 48px 0;
  overflow: hidden;
}

.hero .wrap {
  width: 100%;
}

/* Hero s fotkou na pozadí (na všech stránkách) */
.hero-photo {
  background-size: cover;
  background-position: center;
  background-color: var(--c-ink-soft);
}

.hero-photo::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(20, 22, 24, 0.72);
}

.hero-photo .wrap {
  position: relative;
  z-index: 2;
}

.hero-photo .eyebrow {
  color: #9DBCD4;
}

.hero-photo .tagline {
  color: #B8D2E3;
}

.hero-photo .page-title {
  color: #FAFAF8;
}

.hero-photo .page-lead {
  color: #D8D8D4;
}

.hero-photo .img-credit-note {
  position: relative;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: #9A9A95;
  padding-left: 40px;
  margin-top: -8px;
}

.laser-rail {
  position: relative;
  height: 3px;
  width: 100%;
  background: var(--c-line);
  overflow: hidden;
  pointer-events: none;
}

.laser-rail .dot {
  position: absolute;
  top: 0;
  height: 3px;
  width: 110px;
  background: linear-gradient(90deg, transparent, var(--c-blue), transparent);
  animation: laserMove 7s ease-in-out infinite alternate;
}

@keyframes laserMove {
  from { left: -110px; }
  to   { left: 100%; }
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-blue-dark);
  margin: 0 0 16px;
  padding-left: 40px;
}

.tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 17px;
  font-weight: 500;
  color: var(--c-blue-dark);
  margin: 0 0 14px;
  padding-left: 40px;
}

.hero h1, .page-title {
  font-family: var(--font-display);
  font-size: 40px;
  line-height: 1.2;
  font-weight: 600;
  max-width: 640px;
  margin: 0 0 20px;
  padding-left: 40px;
}

.hero .lead, .page-lead {
  font-size: 16px;
  color: var(--c-ink-soft);
  max-width: 540px;
  margin: 0 0 32px;
  padding-left: 40px;
}

.hero .actions {
  display: flex;
  gap: 12px;
  padding-left: 40px;
  margin-bottom: 28px;
}

/* ===========================================================
   PILÍŘE / KARTY (3 sloupce)
   =========================================================== */

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--c-line);
  border: 0.5px solid var(--c-line);
}

.pillar {
  display: block;
  background: var(--c-paper);
  padding: 24px 22px;
  color: inherit;
  transition: background 0.15s ease;
}

.pillar:hover {
  background: var(--c-paper-dim);
}

.pillars.static .pillar {
  cursor: default;
}

.pillars.static .pillar:hover {
  background: var(--c-paper);
}

.pillar .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-blue-dark);
  margin-bottom: 8px;
}

.pillar h3 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 6px;
}

.pillar p {
  font-size: 13px;
  color: var(--c-gray);
  line-height: 1.55;
  margin: 0;
}

/* ===========================================================
   OBECNÉ SEKCE
   =========================================================== */

section.block {
  padding: 64px 0;
  border-top: 0.5px solid var(--c-line);
}

section.block.tight { padding: 48px 0; }

.section-head {
  margin-bottom: 40px;
  max-width: 640px;
}

.section-head .eyebrow { padding-left: 0; }

.section-head h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  margin: 0 0 12px;
}

.section-head p {
  color: var(--c-gray);
  font-size: 15px;
  margin: 0;
}

/* Proces / kroky */

.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process .step {
  border-top: 2px solid var(--c-blue);
  padding-top: 16px;
}

.process .step .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-blue-dark);
  margin-bottom: 10px;
}

.process .step h4 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 6px;
}

.process .step p {
  font-size: 13px;
  color: var(--c-gray);
  margin: 0;
  line-height: 1.55;
}

/* Karty obecně (služby, reference) */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  border: 0.5px solid var(--c-line);
  border-radius: var(--radius);
  padding: 26px;
  background: var(--c-paper);
}

.card .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-blue-dark);
  margin-bottom: 10px;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 10px;
}

.card p {
  font-size: 14px;
  color: var(--c-gray);
  line-height: 1.6;
  margin: 0 0 14px;
}

.card ul {
  margin: 0;
  padding-left: 18px;
  font-size: 13.5px;
  color: var(--c-ink-soft);
  line-height: 1.8;
}

/* Placeholder štítek pro reference */

.placeholder-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--c-blue-dark);
  background: var(--c-blue-pale);
  padding: 3px 9px;
  border-radius: 2px;
  margin-bottom: 14px;
}

/* Obrázkový placeholder blok */

.img-placeholder {
  aspect-ratio: 4 / 3;
  background: var(--c-paper-dim);
  border: 0.5px dashed var(--c-gray-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gray-light);
  font-size: 12px;
  font-family: var(--font-mono);
  text-align: center;
  padding: 12px;
}

/* CTA pruh */

.cta-strip {
  background: var(--c-ink);
  color: var(--c-paper);
  padding: 48px 0;
  text-align: center;
}

.cta-strip h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 10px;
}

.cta-strip p {
  color: #B9B9B6;
  font-size: 14px;
  margin: 0 0 24px;
}

.cta-strip .btn-primary {
  background: var(--c-paper);
  color: var(--c-ink);
}

/* ===========================================================
   PATIČKA
   =========================================================== */

.site-footer {
  border-top: 0.5px solid var(--c-line);
  padding: 28px 0 32px;
}

.footer-legal {
  font-size: 12px;
  color: var(--c-gray-light);
  font-family: var(--font-mono);
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 0.5px solid var(--c-line);
  line-height: 1.8;
}

.footer-legal .placeholder {
  color: var(--c-gray-light);
}

.footer-legal a {
  color: var(--c-gray-light);
  border-bottom: 1px dotted var(--c-gray-light);
}

.footer-legal a:hover { color: var(--c-ink); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--c-gray);
}

.site-footer a:hover { color: var(--c-ink); }

.footer-links {
  display: flex;
  gap: 20px;
}

/* ===========================================================
   FORMULÁŘ (kontakt)
   =========================================================== */

.contact-form {
  max-width: 560px;
}

.form-row {
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row label {
  font-size: 13px;
  color: var(--c-ink-soft);
  font-weight: 600;
}

.form-row input,
.form-row textarea {
  font-family: var(--font-body);
  font-size: 14px;
  padding: 11px 14px;
  border: 0.5px solid var(--c-gray-light);
  border-radius: var(--radius);
  background: var(--c-paper);
  color: var(--c-ink);
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--c-blue);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-info .item .label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-blue-dark);
  margin-bottom: 4px;
}

.contact-info .item .value {
  font-size: 16px;
  font-weight: 600;
}

.contact-info .item .value a {
  color: var(--c-ink);
  border-bottom: 1px solid var(--c-blue);
  transition: color 0.15s ease;
}

.contact-info .item .value a:hover {
  color: var(--c-blue-dark);
}

.social-icons {
  display: flex;
  gap: 14px;
  margin-top: 4px;
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 0.5px solid var(--c-line);
  border-radius: var(--radius);
  color: var(--c-ink-soft);
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.social-icons a:hover {
  border-color: var(--c-blue);
  color: var(--c-blue-dark);
  background: var(--c-blue-pale);
}

.social-icons a svg {
  width: 18px;
  height: 18px;
}

/* ===========================================================
   RESPONZIVITA
   =========================================================== */

@media (max-width: 1040px) {
  .main-nav { gap: 16px; font-size: 13px; }
}

@media (max-width: 880px) {
  .pillars { grid-template-columns: 1fr; }
  .process { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; }
  .card-grid { grid-template-columns: 1fr; }
  .card-grid.cols-2 { grid-template-columns: 1fr; }
  section.block { padding: 48px 0; }
}

@media (max-width: 680px) {
  .brand img { width: 64px; height: 64px; }
  .brand-text .kastl, .brand-text .brand-3d-kastl, .brand-text .studio { font-size: 16px; }
  .hero { height: 520px; padding: 32px 0; }
  .wrap { padding: 0 20px; }
  .main-nav { display: none; }
  .hero h1, .page-title { font-size: 30px; padding-left: 24px; }
  .eyebrow, .tagline, .hero .lead, .page-lead, .hero .actions, .img-credit-note { padding-left: 24px; margin-left: 0; }
  .process { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 14px; text-align: center; }
  .footer-legal { text-align: center; }
}

/* ===========================================================
   ACCORDION — Ceník
=========================================================== */
.accordion {
  border: 0.5px solid var(--c-gray-light);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 48px 0 0;
}

.accordion-trigger {
  width: 100%;
  background: var(--c-paper-dim);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-ink);
  font-family: var(--font-sans);
  transition: background 0.15s ease;
  gap: 12px;
}

.accordion-trigger:hover {
  background: var(--c-blue-pale);
}

.accordion-trigger .acc-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  position: relative;
  border: 1.5px solid var(--c-blue);
  border-radius: 50%;
  transition: transform 0.25s ease;
}

.accordion-trigger .acc-icon::before,
.accordion-trigger .acc-icon::after {
  content: '';
  position: absolute;
  background: var(--c-blue);
  border-radius: 2px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.accordion-trigger .acc-icon::before { width: 10px; height: 1.5px; }
.accordion-trigger .acc-icon::after  { width: 1.5px; height: 10px; transition: transform 0.25s ease, opacity 0.25s ease; }

.accordion[open] .accordion-trigger .acc-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.accordion-body {
  border-top: 0.5px solid var(--c-gray-light);
  padding: 32px 24px;
  background: var(--c-paper);
}

/* Ceník tabulka uvnitř accordionu */
.price-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-bottom: 24px;
}

.price-table caption {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-gray);
  padding: 0 0 8px;
  text-transform: uppercase;
}

.price-table th {
  background: var(--c-ink);
  color: var(--c-paper);
  padding: 9px 12px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
}

.price-table td {
  padding: 9px 12px;
  border-bottom: 0.5px solid var(--c-gray-light);
  color: var(--c-ink-soft);
  vertical-align: top;
}

.price-table tr:nth-child(even) td { background: var(--c-paper-dim); }

.price-table .price-val {
  font-weight: 700;
  color: var(--c-blue);
  white-space: nowrap;
}

.price-table .price-note {
  font-size: 12.5px;
  color: var(--c-gray);
  font-style: italic;
}

.price-footnote {
  font-size: 12.5px;
  color: var(--c-gray);
  font-style: italic;
  line-height: 1.6;
  border-top: 0.5px solid var(--c-gray-light);
  padding-top: 16px;
  margin-top: 8px;
}

/* Cenotvorba — navigační boxy */
.pricing-nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.pricing-nav-card {
  flex: 1;
  min-width: 180px;
  padding: 20px 24px;
  border: 0.5px solid var(--c-gray-light);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--c-ink);
  background: var(--c-paper-dim);
  transition: border-color 0.15s ease, background 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pricing-nav-card:hover {
  border-color: var(--c-blue);
  background: var(--c-blue-pale);
}

.pricing-nav-card .pnc-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-blue);
}

.pricing-nav-card .pnc-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-ink);
}

.pricing-nav-card .pnc-desc {
  font-size: 13px;
  color: var(--c-gray);
}

@media (max-width: 680px) {
  .accordion-trigger { padding: 14px 16px; font-size: 14px; }
  .accordion-body { padding: 20px 16px; }
  .price-table th, .price-table td { padding: 8px 10px; font-size: 13px; }
  .pricing-nav { flex-direction: column; }
}