/* ============================================================
   PRÁCE — prace.css
   ============================================================ */

/* Inline CTA za každou case study */
.case-study__inline-cta {
  text-align: center;
  margin: var(--sp-8) auto 0;
  font-size: var(--fs-md);
  color: var(--txt-secondary);
}

.case-study__inline-cta a {
  color: var(--clr-accent);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--dur-base) var(--ease-out);
}

.case-study__inline-cta a:hover {
  color: var(--txt-primary);
}

.cs-section--dark .case-study__inline-cta {
  color: var(--txt-inverse-muted, rgba(255,255,255,0.7));
}

.cs-section--dark .case-study__inline-cta a:hover {
  color: var(--txt-inverse, #fff);
}

/* Project navigator */
.project-nav {
  position: fixed;
  right: var(--sp-8);
  top: 50%;
  transform: translateY(-50%);
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}

.project-nav.is-visible {
  opacity: 1;
}

.project-nav__item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--sp-3);
  text-decoration: none;
}

/* Label — ukáže se při hoveru */
.project-nav__item::before {
  content: attr(data-label);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--txt-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 4px 12px;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(8px);
  transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out);
  pointer-events: none;
}

.project-nav__item:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.project-nav__dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  border: 2px solid var(--txt-muted);
  background: transparent;
  flex-shrink: 0;
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}

.project-nav__item.is-active .project-nav__dot {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
  transform: scale(1.5);
}

.project-nav__item:hover .project-nav__dot {
  border-color: var(--clr-accent);
}

@media (max-width: 900px) {
  .project-nav { display: none; }
}

/* progress-bar CSS je v shared.css */

/* ----------------------------------------
   SEKCE — full-bleed s dekorativním číslem
   ---------------------------------------- */

.cs-section {
  position: relative;
  padding: var(--sp-24) 0;
  background: var(--bg-base);
}

/* Z-index — horní sekce překrývá spodní */
[data-num="01"] { z-index: 4; }
[data-num="02"] { z-index: 3; }
[data-num="03"] { z-index: 2; }
[data-num="04"] { z-index: 1; }

/* Poslední sekce (light) → subtle fade před dark home-cta */
[data-num="04"] {
  background-color: var(--bg-base);
  background-image: linear-gradient(
    to top,
    rgba(26, 26, 26, 0.08) 0%,
    transparent 80px
  );
}

/* Diagonální řez — jen spodní hrana, alternující směr */
[data-num="01"],
[data-num="02"],
[data-num="03"] {
  padding-bottom: calc(var(--sp-24) + 6vw);
  margin-bottom: -6vw;
}

/* ↘ levá strana níž */
[data-num="01"] {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6vw), 0 100%);
}

/* ↙ pravá strana níž */
[data-num="02"] {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 6vw));
}

/* ↘ znovu */
[data-num="03"] {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6vw), 0 100%);
}

.cs-section--dark {
  background: var(--clr-carbon);
}

/* Velké dekorativní číslo na pozadí */
.cs-section__deco {
  position: absolute;
  right: -2%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: clamp(10rem, 22vw, 20rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--txt-primary);
  opacity: 0.04;
  pointer-events: none;
  user-select: none;
  will-change: transform;
}

.cs-section--dark .cs-section__deco {
  color: var(--clr-white);
  opacity: 0.06;
}

/* Label nad projektem */
.cs-section__label {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-bottom: var(--sp-10);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--txt-muted);
}

.cs-section__label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-default);
}

.cs-section--dark .cs-section__label {
  color: rgba(255, 252, 242, 0.35);
}

.cs-section--dark .cs-section__label::after {
  background: rgba(255, 252, 242, 0.1);
}

/* ----------------------------------------
   CASE STUDY layout
   ---------------------------------------- */

.case-study {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: center;
}

.case-study--reversed {
  direction: rtl;
}
.case-study--reversed > * {
  direction: ltr;
}

/* Barvy textu v tmavých sekcích */
.cs-section--dark .overline {
  color: rgba(255, 252, 242, 0.45);
}

.cs-section--dark .case-study__title {
  color: var(--txt-inverse);
}

.cs-section--dark .case-study__subtitle {
  color: var(--clr-accent);
}

.cs-section--dark .case-study__desc {
  color: rgba(255, 252, 242, 0.65);
}

.cs-section--dark .case-study__meta {
  background: rgba(255, 252, 242, 0.05);
  border-color: rgba(255, 252, 242, 0.1);
}

.cs-section--dark .case-study__meta-label {
  color: rgba(255, 252, 242, 0.35);
}

.cs-section--dark .case-study__meta-value {
  color: rgba(255, 252, 242, 0.75);
}

.cs-section--dark .tag-neutral {
  background: rgba(255, 252, 242, 0.07);
  color: rgba(255, 252, 242, 0.6);
  border-color: rgba(255, 252, 242, 0.12);
}

.cs-section--dark .btn-outline {
  color: var(--txt-inverse);
  border-color: rgba(255, 252, 242, 0.3);
}

.cs-section--dark .btn-outline:hover {
  background: rgba(255, 252, 242, 0.08);
  border-color: rgba(255, 252, 242, 0.5);
}

.case-study__mockup-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.case-study__img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: transparent;
  aspect-ratio: 3 / 2;
  cursor: pointer;
}

.case-study__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform-origin: center;
  will-change: transform;
}


.case-study__mockup-row .case-study__img-wrap {
  aspect-ratio: 3 / 4;
  background: transparent;
}

.case-study__mockup-row--full {
  grid-template-columns: 1fr;
}

.case-study__img-wrap--crop {
  aspect-ratio: 16 / 9 !important;
}

.case-study__img-wrap--crop img {
  object-fit: cover !important;
  object-position: center center;
}

.case-study__title {
  font-size: var(--fs-3xl);
  margin: var(--sp-2) 0 var(--sp-2);
}

.case-study__subtitle {
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: var(--ls-wide);
  color: var(--clr-accent);
  text-transform: uppercase;
  margin-bottom: var(--sp-5);
}

.case-study__desc {
  margin-bottom: var(--sp-4);
  max-width: none;
}

.case-study__meta {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
  padding: var(--sp-5) var(--sp-6);
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.case-study__meta-item {
  display: flex;
  gap: var(--sp-4);
  align-items: baseline;
}

.case-study__meta-label {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--txt-muted);
  min-width: 70px;
  flex-shrink: 0;
}

.case-study__meta-value {
  font-size: var(--fs-sm);
  color: var(--txt-secondary);
}

.case-study__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-8);
}

@media (max-width: 1024px) {
  .case-study { gap: var(--sp-8); }
}

@media (max-width: 900px) {
  .case-study,
  .case-study--reversed {
    grid-template-columns: 1fr;
    direction: ltr;
  }
  .case-study__title { font-size: var(--fs-2xl); }
}


/* ----------------------------------------
   LIGHTBOX
   ---------------------------------------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-8);
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms var(--ease-out);
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: all;
}

.lightbox__img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-lg);
  transform: scale(0.92);
  transition: transform 350ms var(--ease-out);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.5);
}

.lightbox.is-open .lightbox__img {
  transform: scale(1);
}

.lightbox__close {
  position: absolute;
  top: var(--sp-6);
  right: var(--sp-6);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--clr-white);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 200ms var(--ease-out);
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox__hint {
  position: absolute;
  bottom: var(--sp-6);
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: var(--ls-wide);
  pointer-events: none;
}

/* Kurzor na klikatelných mockup obrázcích */
#lumina .case-study__mockup-row .case-study__img-wrap,
#reviver .case-study__mockup-row .case-study__img-wrap {
  cursor: zoom-in;
}


/* ----------------------------------------
   PAGE HEADER — tmavá varianta (prace.html)
   ---------------------------------------- */

.page-header--dark {
  background: var(--clr-carbon);
}

/* Atmosférický gradient v headeru — konzistentní s hero meshí */
.page-header--dark .page-header__mesh {
  background:
    radial-gradient(ellipse 55% 70% at 10% 50%, rgba(224, 48, 48, 0.09) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 90% 30%, rgba(224, 48, 48, 0.05) 0%, transparent 70%);
}

.page-header--dark .overline {
  color: rgba(255, 252, 242, 0.40);
}

/* Kontrast ověřen: #FFFFFF na #1A1A1A = 21:1 (AAA) */
.page-header--dark .page-header__title {
  color: var(--txt-inverse);
}


/* ----------------------------------------
   MOTTO — editoriální oddělovač nad case studies
   ---------------------------------------- */

.cs-motto {
  background: var(--clr-carbon);
  padding: var(--sp-16) 0;
}

.cs-motto__text {
  font-family: var(--font-display);
  font-size: clamp(var(--fs-xl), 2.8vw, var(--fs-3xl));
  font-weight: 700;
  color: rgba(240, 240, 240, 0.45);
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-snug);
  max-width: none;
  text-align: center;
}


/* ----------------------------------------
   PSR — Problém / Řešení / Výsledek bloky
   ---------------------------------------- */

.case-study__psr {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.case-study__psr-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--sp-3);
  align-items: baseline;
}

.case-study__psr-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--clr-accent);
  padding-top: 3px;
  flex-shrink: 0;
}

.case-study__psr-text {
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
  color: var(--txt-secondary);
  margin: 0;
  max-width: none;
}

.cs-section--dark .case-study__psr-text {
  color: rgba(255, 252, 242, 0.65);
}


/* ----------------------------------------
   KONCEPTY — poznámka v sekci
   ---------------------------------------- */

.cs-concepts-note {
  font-size: var(--fs-sm);
  color: rgba(255, 252, 242, 0.35);
  max-width: 480px;
  margin-top: calc(-1 * var(--sp-5));
  margin-bottom: var(--sp-10);
}

@media (max-width: 768px) {
  .case-study__psr-item {
    grid-template-columns: 1fr;
    gap: var(--sp-1);
  }

  .cs-concepts-note {
    margin-top: 0;
  }
}