*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --green-dark: #152019;
  --green: #1b3022;
  --green-mid: #2d5a3d;
  --green-light: #3d7a52;
  --green-accent: #8ec4a0;
  --green-glow: #a8d4b8;
  --white: #ffffff;
  --text: #152019;
  --text-muted: #5c6d62;
  --surface: #f4f8f5;
  --border: rgba(21, 32, 25, 0.08);
  --radius: 16px;
  --radius-sm: 12px;
  --shadow: 0 8px 32px rgba(21, 32, 25, 0.1);
  --shadow-lg: 0 24px 64px rgba(21, 32, 25, 0.16);
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Plus Jakarta Sans', system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.intro-active {
  overflow: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: min(1180px, 92vw);
  margin-inline: auto;
}

/* ===== INTRO / LOADING SCREEN ===== */
.intro {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--green);
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

.intro.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.intro__ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.15);
  animation: ringPulse 2s ease-out infinite;
}

.intro__ring--1 {
  width: 220px;
  height: 220px;
}

.intro__ring--2 {
  width: 280px;
  height: 280px;
  animation-delay: 0.4s;
}

@keyframes ringPulse {
  0%   { transform: scale(0.6); opacity: 0.8; }
  100% { transform: scale(1.4); opacity: 0; }
}

.intro__title {
  position: relative;
  z-index: 1;
  color: var(--white);
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  opacity: 0;
  animation: introTitleFade 1s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s forwards;
}

.intro__subtitle {
  position: relative;
  z-index: 1;
  margin-top: 0.65rem;
  color: var(--green-accent);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0;
  animation: introTitleFade 0.6s ease 0.7s forwards;
}

@keyframes introTitleFade {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 52vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    url('../gallery/kank_chotusice_17-06-2026_053_result.jpg') center/cover no-repeat;
  transform: scale(1.05);
  animation: heroKenBurns 20s ease-in-out infinite alternate;
}

@keyframes heroKenBurns {
  from { transform: scale(1.05) translate(0, 0); }
  to   { transform: scale(1.12) translate(-1%, -1%); }
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(21, 32, 25, 0.55) 0%, rgba(21, 32, 25, 0.82) 70%, rgba(21, 32, 25, 0.95) 100%),
    radial-gradient(ellipse at 50% 30%, rgba(45, 90, 61, 0.35) 0%, transparent 60%);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 4rem 0 5rem;
  animation: heroFadeUp 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero__brand {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1rem;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green-accent);
  padding: 0.4rem 1rem;
  border: 1px solid rgba(142, 196, 160, 0.35);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(8px);
  margin-bottom: 1.25rem;
}

.hero__title {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 0.75rem;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.hero__title span {
  color: var(--green-accent);
  font-weight: 600;
}

.hero__meta {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.65);
  font-weight: 500;
}

.hero__scroll {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.hero__scroll span {
  display: block;
  width: 22px;
  height: 36px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  position: relative;
}

.hero__scroll span::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--green-accent);
  border-radius: 999px;
  animation: scrollDot 2s ease-in-out infinite;
}

@keyframes scrollDot {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ===== MAIN / SECTION ===== */
.main {
  padding: clamp(3rem, 6vw, 4.5rem) 0 clamp(4rem, 8vw, 6rem);
  margin-top: -2rem;
  position: relative;
  z-index: 2;
}

.section-head {
  text-align: center;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.section-head__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--green);
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}

.section-head__desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ===== VIDEO ===== */
.video-section {
  margin-bottom: clamp(3rem, 6vw, 4.5rem);
}

.video-wrap {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin-inline: auto;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--green);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.gallery-section {
  padding-top: 0;
}

/* ===== GALLERY GRID ===== */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.gallery__item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(21, 32, 25, 0.06);
  border: 1px solid var(--border);
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.55s ease,
    transform 0.55s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow var(--transition);
}

.gallery__item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.gallery__item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.gallery__item.is-visible:hover {
  transform: translateY(-4px);
}

.gallery__thumb {
  position: relative;
  display: block;
  aspect-ratio: 4 / 3;
  min-height: 160px;
  cursor: pointer;
  overflow: hidden;
  background: linear-gradient(135deg, #dce8e0, #c8d9cc);
}

.gallery__thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to top,
    rgba(21, 32, 25, 0.75) 0%,
    rgba(21, 32, 25, 0.1) 50%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity var(--transition);
}

.gallery__thumb::after {
  content: 'Zvětšit';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.85);
  z-index: 2;
  padding: 0.55rem 1.25rem;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  color: var(--white);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition);
}

.gallery__item:hover .gallery__thumb::before,
.gallery__item:hover .gallery__thumb::after {
  opacity: 1;
}

.gallery__item:hover .gallery__thumb::after {
  transform: translate(-50%, -50%) scale(1);
}

.gallery__thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery__item:hover .gallery__thumb img {
  transform: scale(1.07);
}

.gallery__footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 0.85rem;
  transform: translateY(100%);
  transition: transform var(--transition);
}

.gallery__item:hover .gallery__footer {
  transform: translateY(0);
}

.gallery__footer span {
  font-size: 0.75rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
}

.gallery__download {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.9rem;
  background: var(--white);
  color: var(--green);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.gallery__download:hover {
  background: var(--green-accent);
  transform: scale(1.04);
}

.gallery__download::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231b3022' stroke-width='2.5'%3E%3Cpath d='M21 15v4a2 2 0 01-2 2H5a2 2 0 01-2-2v-4M7 10l5 5 5-5M12 15V3'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--green);
  color: rgba(255, 255, 255, 0.65);
  padding: 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer__brand {
  color: var(--white);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer__copy {
  font-size: 0.8125rem;
}

/* ===== LIGHTBOX ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.lightbox[hidden] {
  display: none;
}

.lightbox:not([hidden]) {
  animation: lightboxFadeIn 0.3s ease;
}

@keyframes lightboxFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 22, 17, 0.94);
  backdrop-filter: blur(16px);
}

.lightbox__stage {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 82vh;
  animation: lightboxImgIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes lightboxImgIn {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}

.lightbox__img {
  max-width: 90vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.5);
}

.lightbox__close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 2;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 0.2s, transform 0.2s;
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.16);
  transform: scale(1.05);
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 0.2s, transform 0.2s;
}

.lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-50%) scale(1.06);
}

.lightbox__nav--prev { left: 1.25rem; }
.lightbox__nav--next { right: 1.25rem; }

.lightbox__bar {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.65rem 1.25rem;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
}

.lightbox__counter {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.lightbox__download {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.25rem;
  background: var(--white);
  color: var(--green);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  transition: background 0.2s, transform 0.2s;
}

.lightbox__download:hover {
  background: var(--green-accent);
  transform: scale(1.03);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero {
    min-height: 44vh;
  }

  .gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
  }

  .gallery__thumb::after {
    display: none;
  }

  .gallery__footer {
    transform: translateY(0);
    background: linear-gradient(to top, rgba(21, 32, 25, 0.8), transparent);
    padding: 0.5rem 0.65rem;
  }

  .lightbox__nav {
    width: 42px;
    height: 42px;
  }

  .lightbox__nav--prev { left: 0.5rem; }
  .lightbox__nav--next { right: 0.5rem; }

  .lightbox__bar {
    flex-direction: column;
    gap: 0.65rem;
    bottom: 1rem;
    width: calc(100% - 2rem);
    justify-content: center;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 380px) {
  .gallery {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}