/* Základní layout: ../../css/common.css */

body {
  background: radial-gradient(circle at top, hsl(0 0% 9%), var(--bg) 45%);
}

.nav-inner {
  max-width: 1480px;
  padding: 0 40px;
}

.container {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 40px;
}

.concerts-hero {
  padding: 150px 0 34px;
}

.back-link {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 18px;
  font-size: 0.9rem;
}

.back-link:hover {
  color: var(--fg);
}

.concerts-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3.6rem, 10vw, 6rem);
  letter-spacing: 0.08em;
  line-height: 0.9;
  margin-bottom: 10px;
}

.concerts-hero p {
  color: var(--muted);
  max-width: 58ch;
  line-height: 1.7;
}

.stream-section {
  padding: 0 0 80px;
}

.photo-stream {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-rows: 86px;
}

.stream-item {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: hsl(0 0% 8%);
  cursor: zoom-in;
  padding: 0;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.stream-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.stream-item:hover {
  transform: translateY(-2px);
  border-color: hsl(0 0% 34%);
  box-shadow: 0 14px 28px hsl(0 0% 0% / 0.34);
}

.stream-item:focus-visible {
  outline: 2px solid hsl(0 0% 90%);
  outline-offset: 2px;
}

.stream-item:nth-child(1) { grid-column: span 3; grid-row: span 3; }
.stream-item:nth-child(2) { grid-column: span 3; grid-row: span 2; }
.stream-item:nth-child(3) { grid-column: span 3; grid-row: span 4; }
.stream-item:nth-child(4) { grid-column: span 3; grid-row: span 3; }
.stream-item:nth-child(5) { grid-column: span 4; grid-row: span 3; }
.stream-item:nth-child(6) { grid-column: span 2; grid-row: span 2; }
.stream-item:nth-child(7) { grid-column: span 3; grid-row: span 3; }
.stream-item:nth-child(8) { grid-column: span 3; grid-row: span 2; }
.stream-item:nth-child(9) { grid-column: span 4; grid-row: span 3; }
.stream-item:nth-child(10) { grid-column: span 4; grid-row: span 2; }
.stream-item:nth-child(11) { grid-column: span 4; grid-row: span 3; }
.stream-item:nth-child(12) { grid-column: span 2; grid-row: span 2; }
.stream-item:nth-child(13) { grid-column: span 6; grid-row: span 3; }

.stream-item:nth-child(4) img {
  object-position: center 22%;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: hsl(0 0% 0% / 0.85);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 44px;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: min(92vw, 1400px);
  max-height: 86vh;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid hsl(0 0% 25%);
  box-shadow: 0 30px 80px hsl(0 0% 0% / 0.55);
}

.lightbox-close {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid hsl(0 0% 25%);
  background: hsl(0 0% 10% / 0.9);
  color: var(--fg);
  font-size: 1.7rem;
  cursor: pointer;
}

.lightbox-close:hover {
  border-color: hsl(0 0% 42%);
}

.footer-inner {
  max-width: 1480px;
  padding: 0 40px;
}

@media (max-width: 1050px) {
  .photo-stream {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    grid-auto-rows: 90px;
  }

  .stream-item {
    grid-column: span 3 !important;
    grid-row: span 2 !important;
  }

  .stream-item:nth-child(3n) {
    grid-row: span 3 !important;
  }
}

@media (max-width: 768px) {
  .container,
  .footer-inner {
    padding: 0 24px;
  }

  .concerts-hero {
    padding: 132px 0 28px;
  }

  .photo-stream {
    grid-template-columns: 1fr;
    grid-auto-rows: 220px;
    gap: 10px;
  }

  .stream-item {
    grid-column: auto !important;
    grid-row: auto !important;
  }

  .lightbox {
    padding: 18px;
  }

  .lightbox-close {
    top: 14px;
    right: 14px;
  }
}