/* Portal DIW 2026–2027
   Entrada del mòdul + índexs de RA.
   Estat visual gestionat pel motor calendar-unlock.js.
*/

:root {
  --glass: rgba(255, 255, 255, 0.20);
  --glass-strong: rgba(255, 255, 255, 0.92);
  --ink: #ffffff;
  --ink-dark: #102133;
  --line: rgba(255, 255, 255, 0.34);
  --shadow: 0 18px 35px rgba(0, 0, 0, 0.22);
  --muted: rgba(212, 218, 225, 0.56);
  --muted-strong: rgba(197, 204, 212, 0.72);
  --accent: #6dd5fa;
  --accent-soft: rgba(109, 213, 250, 0.24);
  --accent-ring: rgba(109, 213, 250, 0.75);
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background-image:
    linear-gradient(rgba(7, 36, 68, 0.12), rgba(7, 36, 68, 0.30)),
    url("../images/angles.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
}

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

.portal {
  width: min(1240px, 92vw);
  min-height: 100vh;
  margin: 0 auto;
  padding: 3rem 0;
  display: grid;
  align-content: center;
  gap: 3rem;
}

.portal-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
}

.portal-head > div { text-shadow: 0 2px 14px rgba(0,0,0,.35); }

.back {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: .65rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-weight: 700;
  transition: transform 180ms ease, background-color 180ms ease;
}

.back:hover,
.back:focus-visible {
  transform: translateY(-3px);
  background: rgba(255,255,255,.32);
}

.eyebrow {
  margin: 0 0 .35rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
}

.subtitle {
  max-width: 74ch;
  margin: .75rem 0 0;
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  line-height: 1.45;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 1rem;
  margin-top: 1rem;
  font-size: .78rem;
  font-weight: 700;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}

.legend-dot {
  width: .72rem;
  height: .72rem;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.65);
  background: var(--muted);
}

.legend-dot.available { background: var(--accent); }

.legend-dot.current {
  background: #fff;
  box-shadow: 0 0 0 4px var(--accent-ring);
}

.bubble-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(120px, 1fr));
  gap: clamp(1rem, 2vw, 2rem);
  align-items: center;
}

.bubble-grid.sessions {
  grid-template-columns: repeat(7, minmax(105px, 1fr));
}

.bubble {
  --bubble-soft: var(--accent-soft);
  --bubble-ring: var(--accent-ring);

  position: relative;
  aspect-ratio: 1;
  min-width: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  text-align: center;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 24%, rgba(255,255,255,.28), transparent 32%),
    linear-gradient(145deg, var(--bubble-soft), rgba(255,255,255,.14));
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  box-shadow:
    inset -1px -1px 2px rgba(0,0,0,.18),
    var(--shadow);
  transition:
    transform 220ms ease,
    background-color 220ms ease,
    box-shadow 220ms ease,
    opacity 220ms ease,
    filter 220ms ease;
}

.bubble.is-available,
.bubble.is-current { cursor: pointer; }

.bubble.is-available:hover,
.bubble.is-available:focus-visible,
.bubble.is-current:hover,
.bubble.is-current:focus-visible {
  transform: translateY(-14px) scale(1.035);
  box-shadow:
    inset -1px -1px 2px rgba(0,0,0,.16),
    0 30px 28px rgba(0,0,0,.18);
}

.bubble.is-current {
  border-color: rgba(255,255,255,.92);
  box-shadow:
    inset -1px -1px 2px rgba(0,0,0,.12),
    0 0 0 5px var(--bubble-ring),
    0 28px 40px rgba(0,0,0,.24);
}

.bubble.is-current::before {
  content: "ARA";
  position: absolute;
  top: 7%;
  left: 50%;
  transform: translateX(-50%);
  padding: .28rem .55rem;
  border-radius: 999px;
  background: rgba(255,255,255,.92);
  color: var(--ink-dark);
  font-size: .62rem;
  font-weight: 900;
  letter-spacing: .08em;
}

.bubble.is-locked {
  cursor: default;
  opacity: .58;
  filter: grayscale(1);
  background:
    radial-gradient(circle at 32% 24%, rgba(255,255,255,.18), transparent 32%),
    linear-gradient(145deg, var(--muted-strong), rgba(120,128,138,.22));
}

.bubble:focus-visible,
.back:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 4px;
}

.bubble-code {
  font-size: clamp(1.5rem, 3vw, 2.8rem);
  line-height: 1;
  font-weight: 900;
  letter-spacing: -.04em;
  text-shadow: 0 2px 10px rgba(0,0,0,.28);
}

.bubble-state {
  margin-top: .45rem;
  max-width: 14ch;
  min-height: 2.1em;
  display: grid;
  place-items: center;
  font-size: .74rem;
  font-weight: 700;
  line-height: 1.15;
}

.bubble::after {
  content: attr(data-nom);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 12px);
  transform: translateX(-50%) translateY(8px);
  z-index: 5;
  width: max-content;
  max-width: min(300px, 80vw);
  padding: .55rem .75rem;
  border-radius: 8px;
  background: var(--glass-strong);
  color: var(--ink-dark);
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
  font-size: .78rem;
  font-weight: 700;
  line-height: 1.25;
  white-space: normal;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.bubble:hover::after,
.bubble:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Accents per RA */
[data-ra="RA1"] { --bubble-soft: rgba(215,255,79,.27); --bubble-ring: rgba(215,255,79,.68); }
[data-ra="RA2"] { --bubble-soft: rgba(99,216,255,.27); --bubble-ring: rgba(99,216,255,.68); }
[data-ra="RA3"] { --bubble-soft: rgba(255,203,112,.27); --bubble-ring: rgba(255,203,112,.68); }
[data-ra="RA4"] { --bubble-soft: rgba(255,143,184,.27); --bubble-ring: rgba(255,143,184,.68); }
[data-ra="RA5"] { --bubble-soft: rgba(183,156,255,.27); --bubble-ring: rgba(183,156,255,.68); }
[data-ra="RA6"] { --bubble-soft: rgba(124,242,206,.27); --bubble-ring: rgba(124,242,206,.68); }

.portal-foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .75rem 1.5rem;
  padding-top: .25rem;
  font-size: .76rem;
  line-height: 1.4;
  color: rgba(255,255,255,.82);
  text-shadow: 0 1px 8px rgba(0,0,0,.35);
}

.portal-foot p { margin: 0; }

@media (max-width: 1100px) {
  .bubble-grid,
  .bubble-grid.sessions {
    grid-template-columns: repeat(4, minmax(120px, 1fr));
  }

  .portal { align-content: start; }
}

@media (max-width: 760px) {
  .portal {
    width: min(94vw, 620px);
    padding: 1.5rem 0 2.5rem;
    gap: 2rem;
  }

  .portal-head { grid-template-columns: 1fr; }

  .bubble-grid,
  .bubble-grid.sessions {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }

  .bubble.is-available:hover,
  .bubble.is-available:focus-visible,
  .bubble.is-current:hover,
  .bubble.is-current:focus-visible {
    transform: translateY(-8px) scale(1.02);
  }
}

@media (max-width: 420px) {
  .bubble-grid,
  .bubble-grid.sessions { gap: .8rem; }
  .bubble { padding: .8rem; }
  .bubble-state { font-size: .68rem; }
}

@media (prefers-reduced-motion: reduce) {
  .bubble,
  .bubble::after,
  .back { transition: none; }

  .bubble.is-available:hover,
  .bubble.is-available:focus-visible,
  .bubble.is-current:hover,
  .bubble.is-current:focus-visible,
  .back:hover,
  .back:focus-visible {
    transform: none;
  }
}