/* =========================================================================
   ASTRA NUOTO — Foglio di stile principale
   Palette ricavata dal logo: verde smeraldo, nero profondo, bianco aquila.
   Tutte le variabili di colore/spaziatura sono qui sotto: per cambiare un
   colore basta modificare il valore una sola volta.
   ========================================================================= */

:root {
  /* ---- Colori del marchio ---- */
  --verde:        #17a06a;   /* verde smeraldo Astra (accento principale) */
  --verde-chiaro: #2bd494;   /* verde acceso per hover / luci */
  --verde-scuro:  #0e5c3c;   /* verde profondo */
  --nero:         #07100d;   /* nero-verdastro: fondo piscina */
  --nero-2:       #0c1a15;   /* nero leggermente più chiaro per i blocchi */
  --bianco:       #f5f8f7;   /* bianco aquila (testo) */
  --grigio:       #9fb3ab;   /* testo secondario */
  --bordo:        rgba(43,212,148,.18); /* linee sottili verdi */

  /* ---- Tipografia ---- */
  --font-titoli: "Anton", "Arial Narrow", sans-serif;
  --font-testo:  "Outfit", system-ui, sans-serif;

  /* ---- Misure ---- */
  --max:    1200px;   /* larghezza massima dei contenuti */
  --raggio: 16px;     /* arrotondamento angoli */
  --nav-h:  72px;     /* altezza barra di navigazione */
}

/* ---------- Reset di base ---------- */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-testo);
  background: var(--nero);
  color: var(--bianco);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* Contenitore centrato */
.container { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: 24px; }

/* Titoli */
h1,h2,h3 { font-family: var(--font-titoli); font-weight: 400; line-height: 1.05; letter-spacing: .5px; text-transform: uppercase; }
.sezione-titolo { font-size: clamp(2rem, 5vw, 3.4rem); margin-bottom: .3em; }
.sezione-titolo .verde { color: var(--verde); }
.sezione-intro { color: var(--grigio); max-width: 60ch; margin-bottom: 2.5rem; font-size: 1.05rem; }

/* Etichetta piccola sopra i titoli */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--verde-chiaro); font-weight: 600; letter-spacing: 3px;
  text-transform: uppercase; font-size: .78rem; margin-bottom: 1rem;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--verde); }

/* =========================================================================
   ACQUA DI SFONDO — riverberi (caustics) animati su tutto il sito
   Effetto leggero, solo CSS, nessuna immagine: non appesantisce.
   ========================================================================= */
.water-bg {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(circle at 20% 20%, rgba(23,160,106,.10), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(43,212,148,.08), transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(14,92,60,.12), transparent 50%),
    var(--nero);
}
.water-bg::after {
  content: ""; position: absolute; inset: -50%;
  background:
    repeating-radial-gradient(circle at 30% 40%, transparent 0 18px, rgba(43,212,148,.04) 19px 20px),
    repeating-radial-gradient(circle at 70% 60%, transparent 0 22px, rgba(23,160,106,.035) 23px 25px);
  animation: caustics 24s linear infinite alternate;
}
@keyframes caustics {
  0%   { transform: translate(0,0)        scale(1); }
  100% { transform: translate(-3%, -2%)   scale(1.08); }
}

/* =========================================================================
   NAVIGAZIONE
   ========================================================================= */
.nav {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); z-index: 100;
  display: flex; align-items: center;
  background: rgba(7,16,13,.55);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--bordo);
  transition: background .3s;
}
.nav.scrolled { background: rgba(7,16,13,.9); }
.nav .container { display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo img { height: 46px; width: auto; }
.nav-logo span { font-family: var(--font-titoli); font-size: 1.25rem; letter-spacing: 1px; }
.nav-logo span .verde { color: var(--verde); }

/* Menu */
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu > li { position: relative; }
.nav-menu a {
  display: block; padding: 10px 16px; font-weight: 500; font-size: .95rem;
  color: var(--bianco); border-radius: 10px; transition: color .2s, background .2s;
}
.nav-menu a:hover, .nav-menu a.attivo { color: var(--verde-chiaro); background: rgba(43,212,148,.08); }

/* Sottomenu a tendina */
.has-sub > a::after { content: " ▾"; color: var(--verde); font-size: .8em; }
.sub {
  position: absolute; top: 100%; left: 0; min-width: 190px;
  background: var(--nero-2); border: 1px solid var(--bordo); border-radius: 12px;
  padding: 8px; opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: .22s; box-shadow: 0 20px 40px rgba(0,0,0,.5);
}
.has-sub:hover .sub, .has-sub:focus-within .sub { opacity: 1; visibility: visible; transform: translateY(0); }
.sub a { padding: 9px 14px; font-size: .9rem; }

/* Hamburger mobile */
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; width: 40px; height: 40px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--bianco); margin: 5px auto; transition: .3s; }
.nav-toggle.aperto span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.aperto span:nth-child(2){ opacity: 0; }
.nav-toggle.aperto span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* =========================================================================
   HERO (home)
   ========================================================================= */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; padding-top: var(--nav-h); }
.hero-content { position: relative; z-index: 3; max-width: 760px; }
.hero h1 { font-size: clamp(2.8rem, 9vw, 6.5rem); margin-bottom: .2em; }
.hero h1 .verde { color: var(--verde); }
.hero p { font-size: clamp(1.05rem, 2vw, 1.35rem); color: var(--grigio); max-width: 48ch; margin-bottom: 2rem; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

/* Onde animate in fondo all'hero */
.waves { position: absolute; bottom: 0; left: 0; width: 100%; height: 22vh; min-height: 140px; z-index: 2; }
.waves svg { width: 100%; height: 100%; }
.wave-layer path { fill: rgba(23,160,106,.18); }
.wave-layer:nth-child(2) path { fill: rgba(43,212,148,.12); }
.wave-layer:nth-child(3) path { fill: rgba(14,92,60,.30); }
.wave-layer { animation: ondeggia 9s ease-in-out infinite alternate; }
.wave-layer:nth-child(2){ animation-duration: 12s; }
.wave-layer:nth-child(3){ animation-duration: 7s; }
@keyframes ondeggia { from { transform: translateX(0); } to { transform: translateX(-40px); } }

/* Bollicine che salgono nell'hero */
.bubbles { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.bubble { position: absolute; bottom: -40px; border-radius: 50%; background: radial-gradient(circle at 30% 30%, rgba(43,212,148,.5), rgba(23,160,106,.05)); animation: salire linear infinite; }
@keyframes salire { to { transform: translateY(-110vh); opacity: 0; } }

/* =========================================================================
   PULSANTI
   ========================================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 28px; border-radius: 999px; font-weight: 600; font-size: .98rem;
  cursor: pointer; border: 1px solid transparent; transition: .25s;
}
.btn-primario { background: var(--verde); color: #03130c; }
.btn-primario:hover { background: var(--verde-chiaro); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(23,160,106,.35); }
.btn-ghost { border-color: var(--bordo); color: var(--bianco); }
.btn-ghost:hover { border-color: var(--verde); color: var(--verde-chiaro); }

/* =========================================================================
   SEZIONI GENERICHE
   ========================================================================= */
section { padding: clamp(60px, 9vw, 120px) 0; position: relative; }
.pagina-header { padding-top: calc(var(--nav-h) + 70px); padding-bottom: 40px; }

/* Griglia discipline (home) */
.discipline { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 24px; }
.disc-card {
  position: relative; border-radius: var(--raggio); overflow: hidden;
  border: 1px solid var(--bordo); background: var(--nero-2);
  min-height: 340px; display: flex; flex-direction: column; justify-content: flex-end;
  padding: 28px; transition: .3s;
}
.disc-card::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, rgba(7,16,13,.85)); z-index: 1; }
.disc-card .disc-bg { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform .6s; z-index: 0; }
.disc-card:hover .disc-bg { transform: scale(1.08); }
.disc-card:hover { border-color: var(--verde); transform: translateY(-4px); }
.disc-card h3 { position: relative; z-index: 2; font-size: 1.8rem; }
.disc-card p { position: relative; z-index: 2; color: var(--grigio); margin: 8px 0 14px; }
.disc-card .freccia { position: relative; z-index: 2; color: var(--verde-chiaro); font-weight: 600; }

/* Blocco testo + immagine (pagine discipline) */
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.split .testo p { margin-bottom: 1rem; color: #cfe0d9; }
.split .media { border-radius: var(--raggio); overflow: hidden; border: 1px solid var(--bordo); aspect-ratio: 4/3; background: var(--nero-2); }
.split .media img { width: 100%; height: 100%; object-fit: cover; }

/* =========================================================================
   GALLERIA
   ========================================================================= */
.galleria { columns: 3; column-gap: 16px; }
.galleria figure { break-inside: avoid; margin-bottom: 16px; border-radius: 12px; overflow: hidden; border: 1px solid var(--bordo); cursor: pointer; position: relative; }
.galleria img { width: 100%; transition: transform .4s, filter .4s; filter: saturate(.9); }
.galleria figure:hover img { transform: scale(1.05); filter: saturate(1.2); }
.galleria .vuota { color: var(--grigio); font-style: italic; }

/* Lightbox (ingrandimento foto) */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(3,8,6,.92); display: none; align-items: center; justify-content: center; padding: 30px; }
.lightbox.aperto { display: flex; }
.lightbox img { max-width: 92vw; max-height: 88vh; border-radius: 10px; }
.lightbox-close { position: absolute; top: 22px; right: 28px; font-size: 2rem; color: var(--bianco); cursor: pointer; background: none; border: 0; }

/* =========================================================================
   NEWS
   ========================================================================= */
.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px,1fr)); gap: 24px; }
.news-card { background: var(--nero-2); border: 1px solid var(--bordo); border-radius: var(--raggio); overflow: hidden; display: flex; flex-direction: column; transition: .3s; }
.news-card:hover { border-color: var(--verde); transform: translateY(-4px); }
.news-card .copertina { aspect-ratio: 16/9; background: var(--verde-scuro); overflow: hidden; }
.news-card .copertina img { width: 100%; height: 100%; object-fit: cover; }
.news-card .corpo { padding: 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.news-card .data { color: var(--verde-chiaro); font-size: .8rem; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; }
.news-card h3 { font-family: var(--font-testo); font-weight: 700; font-size: 1.2rem; text-transform: none; line-height: 1.25; }
.news-card p { color: var(--grigio); font-size: .95rem; flex: 1; }
.news-card .leggi { color: var(--verde-chiaro); font-weight: 600; font-size: .9rem; }

/* Articolo singolo */
.articolo { max-width: 760px; margin-inline: auto; }
.articolo .data { color: var(--verde-chiaro); font-weight: 600; letter-spacing: 1px; text-transform: uppercase; font-size: .85rem; }
.articolo h1 { font-family: var(--font-testo); font-weight: 800; text-transform: none; font-size: clamp(1.8rem,4vw,2.8rem); margin: .3em 0 .6em; }
.articolo .copertina { border-radius: var(--raggio); overflow: hidden; margin-bottom: 2rem; border: 1px solid var(--bordo); }
.articolo .contenuto p { margin-bottom: 1.2rem; color: #cfe0d9; font-size: 1.08rem; }

/* =========================================================================
   CONTATTI / DOVE SIAMO
   ========================================================================= */
.contatti-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.info-list li { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--bordo); }
.info-list .ico { color: var(--verde); font-size: 1.3rem; flex-shrink: 0; }
.info-list .et { color: var(--grigio); font-size: .82rem; text-transform: uppercase; letter-spacing: 1px; }
.mappa { border-radius: var(--raggio); overflow: hidden; border: 1px solid var(--bordo); min-height: 380px; }
.mappa iframe { width: 100%; height: 100%; min-height: 380px; border: 0; filter: grayscale(.3) invert(.92) hue-rotate(120deg); }

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer { background: var(--nero-2); border-top: 1px solid var(--bordo); padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-logo img { height: 50px; }
.footer p { color: var(--grigio); font-size: .92rem; }
.footer h4 { color: var(--verde-chiaro); text-transform: uppercase; letter-spacing: 2px; font-size: .82rem; margin-bottom: 14px; font-family: var(--font-testo); font-weight: 700; }
.footer-links a { display: block; color: var(--grigio); padding: 5px 0; font-size: .92rem; transition: color .2s; }
.footer-links a:hover { color: var(--verde-chiaro); }
.footer-bottom { border-top: 1px solid var(--bordo); padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--grigio); font-size: .82rem; }
.footer-bottom a { color: var(--grigio); }
.footer-bottom a:hover { color: var(--verde-chiaro); }

/* =========================================================================
   BANNER COOKIE (GDPR)
   ========================================================================= */
.cookie-banner {
  position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%) translateY(140%);
  width: min(680px, calc(100% - 32px)); z-index: 300;
  background: var(--nero-2); border: 1px solid var(--verde-scuro); border-radius: var(--raggio);
  padding: 22px 24px; box-shadow: 0 24px 60px rgba(0,0,0,.6);
  transition: transform .4s ease;
}
.cookie-banner.mostra { transform: translateX(-50%) translateY(0); }
.cookie-banner p { font-size: .9rem; color: #cfe0d9; margin-bottom: 14px; }
.cookie-banner a { color: var(--verde-chiaro); text-decoration: underline; }
.cookie-azioni { display: flex; gap: 10px; flex-wrap: wrap; }
.cookie-azioni .btn { padding: 10px 20px; font-size: .9rem; }

/* =========================================================================
   ANIMAZIONE A COMPARSA (allo scorrimento)
   ========================================================================= */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visibile { opacity: 1; transform: none; }

/* =========================================================================
   RESPONSIVE (tablet e telefono)
   ========================================================================= */
@media (max-width: 900px) {
  .split, .contatti-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .galleria { columns: 2; }
}
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-menu {
    position: fixed; top: var(--nav-h); right: 0; width: min(300px, 80%); height: calc(100vh - var(--nav-h));
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--nero-2); border-left: 1px solid var(--bordo);
    padding: 16px; transform: translateX(100%); transition: transform .3s; overflow-y: auto;
  }
  .nav-menu.aperto { transform: translateX(0); }
  .sub { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; background: transparent; padding-left: 14px; }
  .has-sub:hover .sub { transform: none; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .galleria { columns: 1; }
  .footer-bottom { flex-direction: column; }
}