:root {
  --bg-deep: #060911;
  --bg-card: rgba(14, 21, 36, 0.78);
  --bg-card-hover: rgba(20, 31, 52, 0.92);
  --border-soft: rgba(148, 163, 184, 0.14);
  --border-hover: rgba(148, 163, 184, 0.32);

  --text-main: #f1f5f9;
  --text-dim: #94a3b8;
  --text-muted: #64748b;

  /* Volné náhrady písem z claude.ai: DM Sans místo Styrene (rozhraní),
     Source Serif 4 místo Tiempos (nadpisy a čtený text) */
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Source Serif 4', 'Tiempos Text', Georgia, 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
}

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

html, body {
  min-height: 100dvh;
  background-color: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  cursor: default;
  overflow-x: hidden;
}

a, button, [role="button"], .project-card, .project-card * {
  cursor: pointer !important;
}

/* Jemné plynulé míchání barev (modrá, zelená, červená) na tmavém pozadí */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: #050811;
}

.glow-orb {
  position: absolute;
  width: min(600px, 75vw);
  height: min(600px, 75vw);
  border-radius: 50%;
  filter: blur(90px);
  will-change: transform;
}

/* Modrá */
.glow-blue {
  top: -4%;
  left: 4%;
  background: radial-gradient(circle, rgba(56, 152, 255, 0.55) 0%, rgba(56, 152, 255, 0) 70%);
  animation: mix-blue 14s ease-in-out infinite alternate;
}

/* Zelená */
.glow-green {
  top: 4%;
  right: 4%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.55) 0%, rgba(16, 185, 129, 0) 70%);
  animation: mix-green 16s ease-in-out infinite alternate;
}

/* Červená */
.glow-red {
  bottom: -4%;
  left: 26%;
  background: radial-gradient(circle, rgba(245, 55, 55, 0.58) 0%, rgba(245, 55, 55, 0) 70%);
  animation: mix-red 15s ease-in-out infinite alternate;
}

@keyframes mix-blue {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(28vw, 24vh) scale(1.12); }
  100% { transform: translate(12vw, 38vh) scale(0.95); }
}

@keyframes mix-green {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(-28vw, 26vh) scale(1.14); }
  100% { transform: translate(-12vw, 36vh) scale(0.95); }
}

@keyframes mix-red {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(-18vw, -32vh) scale(1.15); }
  100% { transform: translate(18vw, -26vh) scale(0.96); }
}

/* Centrování rozcestníku uprostřed obrazovky */
.hub-wrapper {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.1rem 1.25rem;
}

.hub-container {
  width: 100%;
  max-width: 780px;
}

/* Hlavička se štítkem zkusmo.cz */
.hub-header {
  text-align: center;
  margin-bottom: 0.95rem;
}

.hub-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1.48rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  background: rgba(20, 30, 48, 0.82);
  border: 1px solid rgba(148, 163, 184, 0.25);
  padding: 0.42rem 1.45rem;
  border-radius: 999px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

.hub-badge .flag-blue {
  color: #3898ff;
}

.hub-badge .flag-white {
  color: #ffffff;
}

.hub-badge .flag-green {
  color: #10b981;
}

.hub-badge .flag-red {
  color: #f04444;
}

/* Seznam karet pod sebou */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 0.72rem;
}

.project-card {
  display: flex;
  align-items: center;
  gap: 1.3rem;
  padding: 0.82rem 1.25rem 0.82rem 0.85rem;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-2px);
  background: var(--bg-card-hover);
}

/* Barevné akcenty jednotlivých projektů */
.project-card.accent-emerald {
  --accent: #10b981;
  --accent-soft: rgba(16, 185, 129, 0.14);
  --accent-border: rgba(16, 185, 129, 0.45);
  --accent-glow: rgba(16, 185, 129, 0.16);
}

.project-card.accent-blue {
  --accent: #3d8bff;
  --accent-soft: rgba(61, 139, 255, 0.14);
  --accent-border: rgba(61, 139, 255, 0.45);
  --accent-glow: rgba(61, 139, 255, 0.16);
}

.project-card.accent-orange {
  --accent: #e07a5f;
  --accent-soft: rgba(224, 122, 95, 0.14);
  --accent-border: rgba(224, 122, 95, 0.45);
  --accent-glow: rgba(224, 122, 95, 0.16);
}

.project-card.accent-sky {
  --accent: #ffffff;
  --accent-soft: rgba(255, 255, 255, 0.12);
  --accent-border: rgba(255, 255, 255, 0.45);
  --accent-glow: rgba(255, 255, 255, 0.14);
}

.project-card:hover {
  border-color: var(--accent-border);
  box-shadow: 0 10px 28px -6px rgba(0, 0, 0, 0.55), 0 0 22px var(--accent-glow);
}

/* Ikona projektu vlevo */
.card-icon {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card-icon.icon-emerald {
  background: linear-gradient(135deg, #059669, #10b981);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.28);
}

.card-icon.icon-blue {
  background: linear-gradient(135deg, #0c2a5a, #3d8bff);
  box-shadow: 0 6px 20px rgba(61, 139, 255, 0.28);
}

.card-icon.icon-orange {
  background: linear-gradient(135deg, #9c4a2f, #D97757);
  box-shadow: 0 6px 20px rgba(217, 119, 87, 0.28);
}

.card-icon.icon-sky {
  background: linear-gradient(135deg, #0a2463, #0075FF);
  box-shadow: 0 6px 20px rgba(0, 117, 255, 0.28);
}

.project-card:hover .card-icon {
  transform: scale(1.06);
}

/* Textová část uprostřed */
.card-body {
  flex: 1;
  min-width: 0;
}

.card-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 0.32rem;
}

.card-title-row h2 {
  font-family: var(--font-serif);
  font-size: 1.22rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.card-domain {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 0.12rem 0.52rem;
  border-radius: 6px;
  white-space: nowrap;
}

.card-desc {
  font-family: var(--font-serif);
  font-size: 0.96rem;
  color: var(--text-dim);
  line-height: 1.48;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Šipka vpravo */
.card-arrow {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: color 0.2s ease, background-color 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.project-card:hover .card-arrow {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent-border);
  transform: translateX(3px);
}

/* Patička */
.hub-footer {
  margin-top: 0.95rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Responzivita pro mobilní telefony */
@media (max-width: 600px) {
  .hub-wrapper {
    align-items: flex-start;
    padding: 1.15rem 0.85rem max(1.25rem, env(safe-area-inset-bottom));
  }

  .hub-header {
    margin-bottom: 0.85rem;
  }

  .hub-badge {
    font-size: 1.28rem;
    padding: 0.35rem 1.2rem;
  }

  .project-list {
    gap: 0.65rem;
  }

  .project-card {
    align-items: flex-start;
    padding: 0.85rem 0.9rem;
    gap: 0.85rem;
    border-radius: 14px;
  }

  .project-card:active {
    transform: scale(0.99);
    background: var(--bg-card-hover);
    border-color: var(--accent-border);
  }

  .card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    margin-top: 0.1rem;
  }

  .card-icon svg {
    width: 24px;
    height: auto;
    max-height: 24px;
  }

  .card-title-row {
    gap: 0.2rem 0.5rem;
    margin-bottom: 0.3rem;
  }

  .card-title-row h2 {
    font-size: 1.1rem;
    line-height: 1.25;
  }

  .card-domain {
    font-size: 0.68rem;
    padding: 0.1rem 0.44rem;
  }

  .card-desc {
    font-size: 0.88rem;
    line-height: 1.42;
    display: block;
    -webkit-line-clamp: unset;
    overflow: visible;
  }

  .card-arrow {
    display: none;
  }

  .hub-footer {
    margin-top: 0.85rem;
    font-size: 0.75rem;
  }
}