/* Rozcestník kurzy2 — motiv z detidobrusli.cz, čisté CSS */

:root {
  --ddb-cyan: #67bbd7;
  --ddb-cyan-deep: #009acd;
  --ddb-dark: #0b0d10;
  --ddb-surface: rgba(255, 255, 255, 0.94);
  --ddb-surface-glass: rgba(18, 23, 31, 0.72);
  --ddb-border: rgba(103, 187, 215, 0.22);
  --ddb-border-strong: rgba(103, 187, 215, 0.42);
  --ddb-text: #f4f7fb;
  --ddb-text-muted: rgba(244, 247, 251, 0.68);
  --ddb-font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --ddb-font-display: "DM Sans", "Plus Jakarta Sans", system-ui, sans-serif;
  --ddb-radius-card: 1.125rem;
  --ddb-radius-pill: 9999px;
  --ddb-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  --ddb-shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.08);
  --ddb-shadow-glow: 0 0 0 1px rgba(103, 187, 215, 0.28), 0 10px 36px rgba(0, 154, 205, 0.18);
  --ddb-ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --ddb-duration: 0.25s;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body.kurzy-portal {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--ddb-font);
  font-weight: 500;
  color: var(--ddb-text);
  background-color: #0a0c10;
  background-image:
    radial-gradient(ellipse 120% 65% at 50% -28%, rgba(103, 187, 215, 0.18), transparent 55%),
    radial-gradient(ellipse 85% 55% at 100% 100%, rgba(0, 154, 205, 0.11), transparent 52%),
    radial-gradient(ellipse 70% 45% at 0% 85%, rgba(47, 74, 109, 0.24), transparent 48%),
    linear-gradient(180deg, #0e131a 0%, var(--ddb-dark) 42%, #07080c 100%);
}

.kurzy-portal__wrap {
  width: min(100%, 44rem);
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2.5rem) clamp(1rem, 4vw, 2rem) clamp(2rem, 6vw, 3rem);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

/* --- Hlavička --- */
.kurzy-portal__header {
  text-align: center;
}

.kurzy-portal__logo-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
}

.kurzy-portal__logo {
  width: clamp(5.5rem, 22vw, 8.5rem);
  height: auto;
  display: block;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.35));
}

.kurzy-portal__eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ddb-cyan);
}

.kurzy-portal__title {
  margin: 0;
  font-family: var(--ddb-font-display);
  font-size: clamp(1.65rem, 5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.kurzy-portal__lead {
  margin: 0.75rem auto 0;
  max-width: 22rem;
  font-size: clamp(0.9rem, 2.5vw, 1rem);
  line-height: 1.5;
  color: var(--ddb-text-muted);
}

/* --- Mřížka portálů --- */
.kurzy-portal__nav {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 480px) {
  .kurzy-portal__nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
  }
}

@media (min-width: 768px) {
  .kurzy-portal__wrap {
    width: min(100%, 52rem);
  }

  .kurzy-portal__nav {
    gap: 1rem;
  }
}

.kurzy-portal__card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 0.2rem;
  min-height: 4.75rem;
  padding: 1rem 1.15rem;
  border-radius: var(--ddb-radius-card);
  border: 1px solid var(--ddb-border);
  background: var(--ddb-surface-glass);
  backdrop-filter: blur(14px) saturate(1.15);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  color: var(--ddb-text);
  text-decoration: none;
  box-shadow:
    0 0 0 1px rgba(103, 187, 215, 0.08),
    0 12px 32px rgba(0, 0, 0, 0.22);
  transition:
    transform var(--ddb-duration) var(--ddb-ease-out),
    border-color var(--ddb-duration) var(--ddb-ease-out),
    box-shadow var(--ddb-duration) var(--ddb-ease-out),
    background var(--ddb-duration) var(--ddb-ease-out);
}

@media (min-width: 480px) {
  .kurzy-portal__card {
    min-height: 5.5rem;
    padding: 1.15rem 1.25rem;
  }
}

.kurzy-portal__card:hover {
  transform: translateY(-2px);
  border-color: var(--ddb-border-strong);
  background: rgba(22, 30, 42, 0.88);
  box-shadow: var(--ddb-shadow-glow);
}

.kurzy-portal__card:focus-visible {
  outline: 2px solid var(--ddb-cyan);
  outline-offset: 3px;
}

.kurzy-portal__card-kicker {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ddb-cyan);
}

.kurzy-portal__card-label {
  font-family: var(--ddb-font-display);
  font-size: clamp(1.1rem, 3.2vw, 1.35rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

/* DDB — plná šířka na mobilu, na větších obrazovkách přes celou řádku */
.kurzy-portal__card--ddb {
  border-color: rgba(103, 187, 215, 0.32);
  background: linear-gradient(145deg, rgba(103, 187, 215, 0.14), rgba(0, 154, 205, 0.08));
}

@media (min-width: 480px) {
  .kurzy-portal__card--ddb {
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    min-height: 4.25rem;
    padding: 1rem 1.5rem;
  }

  .kurzy-portal__card--ddb .kurzy-portal__card-label {
    font-size: 1.25rem;
  }
}

.kurzy-portal__card--ddb:hover {
  background: linear-gradient(145deg, rgba(103, 187, 215, 0.22), rgba(0, 154, 205, 0.14));
}

/* Úzké displeje s malou výškou */
@media (max-height: 520px) and (orientation: landscape) {
  .kurzy-portal__wrap {
    justify-content: flex-start;
    padding-top: 1rem;
    padding-bottom: 1rem;
    gap: 1rem;
  }

  .kurzy-portal__logo-wrap {
    margin-bottom: 0.5rem;
  }

  .kurzy-portal__logo {
    width: 4rem;
  }

  .kurzy-portal__lead {
    display: none;
  }

  .kurzy-portal__nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .kurzy-portal__card {
    min-height: 3.75rem;
    padding: 0.75rem 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kurzy-portal__card {
    transition: none;
  }

  .kurzy-portal__card:hover {
    transform: none;
  }
}