/* ==========================================================================
   CEKA Music - stile principale
   Mobile-first: gli stili base sono per smartphone, i breakpoint ampliano.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  /* Colori */
  --bg: #0b0b0f;
  --bg-elevated: #121218;
  --surface: #17171f;
  --surface-hover: #1f1f2a;
  --border: #272733;

  --text: #f3f3f7;
  --text-muted: #9b9bab;

  --accent: #a855f7;        /* viola neon, ispirato al logo CEKA */
  --accent-strong: #c084fc;
  --accent-deep: #6d28d9;
  --accent-glow: rgba(168, 85, 247, 0.45);

  /* Tipografia */
  --font-display: "Oswald", "Arial Narrow", Impact, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-h3: clamp(1.25rem, 1.1rem + 0.8vw, 1.6rem);
  --fs-h2: clamp(2rem, 1.5rem + 2.5vw, 3.25rem);
  --fs-h1: clamp(3.5rem, 2rem + 9vw, 8rem);

  /* Spaziature */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 5rem;
  --section-pad: clamp(4rem, 3rem + 5vw, 7rem);

  /* Layout */
  --container: 72rem;
  --gutter: 1.25rem;
  --radius: 0.75rem;
  --radius-lg: 1.25rem;
  --header-h: 6rem;

  /* Movimento */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --t-fast: 160ms;
  --t-base: 280ms;
}

/* --------------------------------------------------------------------------
   2. Reset e base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
picture,
video,
svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

h1,
h2,
h3,
p,
ul,
ol,
figure {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

::selection {
  background: var(--accent);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --------------------------------------------------------------------------
   3. Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

section {
  padding-block: var(--section-pad);
}

.section-eyebrow {
  display: inline-block;
  margin-bottom: var(--space-3);
  color: var(--accent-strong);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.section-title {
  margin-bottom: var(--space-6);
}

.section-title .accent,
.text-accent {
  color: var(--accent);
}

.text-muted {
  color: var(--text-muted);
}

/* Visibile solo agli screen reader */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   4. Bottoni
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 3rem;
  padding: 0.75rem 1.75rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition:
    transform var(--t-fast) var(--ease),
    background-color var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease),
    border-color var(--t-base) var(--ease);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 0 var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-strong);
  box-shadow: 0 0 28px 2px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent);
  background: rgba(168, 85, 247, 0.08);
}

.btn-block {
  width: 100%;
}

/* --------------------------------------------------------------------------
   5. Card
   -------------------------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition:
    transform var(--t-base) var(--ease),
    border-color var(--t-base) var(--ease),
    background-color var(--t-base) var(--ease);
}

.card:hover {
  border-color: var(--accent);
  background: var(--surface-hover);
}

/* --------------------------------------------------------------------------
   5.1 Header
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: linear-gradient(to bottom, rgba(11, 11, 15, 0.85), rgba(11, 11, 15, 0));
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--text);
  text-shadow: 0 0 18px var(--accent-glow);
  width: 140px;
  margin-top: 12px;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Pulsante hamburger (solo mobile) */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 0;
  background: transparent;
}

.nav-toggle__bar {
  width: 1.5rem;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition:
    transform var(--t-base) var(--ease),
    opacity var(--t-fast) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile: pannello a tendina sotto l'header */
.main-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  padding: var(--space-3) var(--gutter) var(--space-5);
  border-bottom: 1px solid var(--border);
  background: rgba(11, 11, 15, 0.97);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition:
    opacity var(--t-base) var(--ease),
    transform var(--t-base) var(--ease),
    visibility var(--t-base);
}

.main-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.main-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.main-nav li a {
  display: inline-block;
  padding-block: var(--space-3);
}

.main-nav a {
  position: relative;
  padding-block: var(--space-2);
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--t-base) var(--ease);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-base) var(--ease);
}

.main-nav a:hover {
  color: var(--text);
}

.main-nav a:hover::after {
  transform: scaleX(1);
}

.btn-sm {
  min-height: 2.5rem;
  padding: 0.4rem 1.25rem;
  font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   5.2 Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 100vh;
  min-height: 100svh;
  padding-top: calc(var(--header-h) + var(--space-6));
  padding-bottom: var(--space-7);
  overflow: hidden;
  isolation: isolate;
}

/* Sfondo dell'hero: velo scuro e aloni viola (la foto di CEKA è l'img .hero__photo). */
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-color: var(--bg);
  background-image:
    linear-gradient(to top, var(--bg) 4%, rgba(11, 11, 15, 0.55) 55%, rgba(11, 11, 15, 0.75)),
    radial-gradient(ellipse at 82% 60%, rgba(168, 85, 247, 0.4), transparent 55%),
    radial-gradient(ellipse at 70% 20%, rgba(168, 85, 247, 0.25), transparent 60%),
    radial-gradient(ellipse at 10% 90%, rgba(109, 40, 217, 0.25), transparent 55%);
  background-size: cover;
  background-position: center 20%;
  background-repeat: no-repeat;
  animation: hero-glow 9s ease-in-out infinite alternate;
}

@keyframes hero-glow {
  from { filter: brightness(0.95); }
  to   { filter: brightness(1.12); }
}

/* Foto di CEKA: allineata in basso a destra, visibile solo da tablet/desktop
   (su mobile è nascosta). */
.hero__photo {
  display: none;
  position: absolute;
  right: 0;
  bottom: 0;
  z-index: 0;
  width: auto;
  max-width: none;
  object-fit: contain;
  object-position: right bottom;
  pointer-events: none;
  user-select: none;
  /* sfuma il bordo inferiore nella sezione successiva */
  -webkit-mask-image: linear-gradient(to bottom, #000 82%, transparent);
  mask-image: linear-gradient(to bottom, #000 82%, transparent);
  animation: rise 1100ms var(--ease) 150ms both;
}

.hero__content {
  position: relative;
  z-index: 1;
  animation: rise 900ms var(--ease) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero__title {
  margin-bottom: var(--space-3);
  line-height: 0.9;
  letter-spacing: 0.06em;
  text-shadow: 0 0 40px var(--accent-glow);
}

.hero__headline {
  max-width: 22ch;
  margin-bottom: var(--space-5);
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 1.1rem + 1.5vw, 2.25rem);
  line-height: 1.15;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.chips li {
  padding: 0.3rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(23, 23, 31, 0.6);
  font-size: var(--fs-small);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.hero__meta {
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

@media (min-width: 40em) {
  .hero__actions {
    flex-direction: row;
  }
}

@media (min-width: 48em) {
  .nav-toggle {
    display: none;
  }

  .main-nav {
    position: static;
    padding: 0;
    border: 0;
    background: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .main-nav ul {
    flex-direction: row;
    gap: var(--space-6);
  }

  .main-nav li a {
    padding-block: var(--space-2);
  }

  .hero {
    align-items: center;
    padding-bottom: var(--space-8);
  }

  .hero__photo {
    display: block;
    height: min(92%, 62vw);
  }
}

/* --------------------------------------------------------------------------
   5.3 About
   -------------------------------------------------------------------------- */
.about {
  background: var(--bg-elevated);
}

.about__grid {
  display: grid;
  gap: var(--space-7);
}

/* Foto in assets/img/about/about.webp; senza foto si vede il fallback viola. */
.about__photo {
  width: 100%;
  max-width: 28rem;
  margin-inline: auto;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background-color: var(--surface);
  background-image:
    url("../assets/img/about/about.webp"),
    radial-gradient(ellipse at 30% 20%, rgba(168, 85, 247, 0.4), transparent 65%),
    linear-gradient(160deg, var(--surface), var(--bg));
  background-size: cover;
  background-position: center;
  box-shadow: 0 0 60px -20px var(--accent-glow);
}

.about__text p {
  max-width: 60ch;
  margin-bottom: var(--space-4);
  color: var(--text-muted);
}

.facts {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-6) 0 0;
}

.facts__item {
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}

.facts dt {
  margin-bottom: var(--space-1);
  font-size: var(--fs-small);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.facts dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

@media (min-width: 48em) {
  .about__grid {
    grid-template-columns: 5fr 6fr;
    align-items: center;
    gap: var(--space-8);
  }

  .about__photo {
    margin-inline: 0;
  }
}

/* --------------------------------------------------------------------------
   5.4 Gallery
   -------------------------------------------------------------------------- */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-auto-rows: 10rem;
  gap: var(--space-2);
}

.gallery__item {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: var(--surface);
  background-image:
    radial-gradient(ellipse at var(--glow, 50% 30%), rgba(168, 85, 247, 0.28), transparent 70%),
    linear-gradient(160deg, var(--surface), var(--bg));
  background-size: cover;
  background-position: center;
  transition:
    transform var(--t-base) var(--ease),
    border-color var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease);
}

.gallery__item:hover {
  transform: scale(1.02);
  border-color: var(--accent);
  box-shadow: 0 0 30px -8px var(--accent-glow);
  z-index: 1;
}

.gallery__item img {
  height: 100%;
  width: 100%;
  object-fit: cover;
  filter: grayscale(100%);
}

/* Alone viola dietro ogni foto (visibile finché l'immagine non è caricata). */
.gallery__item--1 { --glow: 30% 20%; }
.gallery__item--2 { --glow: 70% 40%; }
.gallery__item--3 { --glow: 40% 70%; }
.gallery__item--4 { --glow: 60% 30%; }
.gallery__item--5 { --glow: 20% 60%; }
.gallery__item--6 { --glow: 80% 50%; }

.gallery__item--tall {
  grid-row: span 2;
}

.gallery__item--wide {
  grid-column: span 2;
}

.gallery__more {
  margin-top: var(--space-6);
  text-align: center;
}

@media (min-width: 48em) {
  .gallery__grid {
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 14rem;
    gap: var(--space-3);
  }

  .gallery__item--wide-lg {
    grid-column: span 2;
  }
}

/* --------------------------------------------------------------------------
   5.5 Music
   -------------------------------------------------------------------------- */
.music {
  background: var(--bg-elevated);
}

.music__grid {
  display: grid;
  gap: var(--space-4);
}

.music-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
}

.music-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px -16px var(--accent-glow);
}

.music-card__icon {
  flex: none;
  padding: 0.75rem;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: rgba(168, 85, 247, 0.15);
  color: var(--accent-strong);
}

.music-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.music-card__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.music-card__hint {
  font-size: var(--fs-small);
  color: var(--text-muted);
}

.music-card__arrow {
  font-size: 1.5rem;
  color: var(--accent-strong);
  transition: transform var(--t-base) var(--ease);
}

.music-card:hover .music-card__arrow {
  transform: translateX(6px);
}

@media (min-width: 40em) {
  .music__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --------------------------------------------------------------------------
   5.6 Contatti e booking
   -------------------------------------------------------------------------- */
.contact {
  background:
    radial-gradient(ellipse at 50% 0%, rgba(168, 85, 247, 0.18), transparent 60%),
    var(--bg);
}

.contact__grid {
  display: grid;
  gap: var(--space-7);
}

.contact__booking {
  padding: var(--space-5);
  border-color: var(--accent-deep);
  box-shadow: 0 0 50px -24px var(--accent-glow);
}

.contact__booking h3 {
  margin-bottom: var(--space-2);
}

.contact__actions {
  display: grid;
  gap: var(--space-3);
  margin-block: var(--space-5) var(--space-4);
}

.contact__actions .btn {
  padding-inline: 1rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.contact__direct {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  font-size: var(--fs-small);
  color: var(--text-muted);
}

.contact__direct a:hover {
  color: var(--accent-strong);
}

.contact__subtitle {
  margin-block: var(--space-6) var(--space-4);
  font-size: 1.15rem;
  letter-spacing: 0.15em;
  color: var(--accent-strong);
}

/* Foto visibile solo da desktop (vedi media query sotto) */
.contact__photo {
  display: none;
}

.socials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.social {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition:
    border-color var(--t-base) var(--ease),
    background-color var(--t-base) var(--ease);
}

.social:hover {
  border-color: var(--accent);
  background: var(--surface-hover);
}

/* Link ancora da inserire (TODO in index.html) */
.social--todo {
  opacity: 0.55;
  border-style: dashed;
}

/* Form */
.form {
  display: grid;
  gap: var(--space-4);
}

.form__row {
  display: grid;
  gap: var(--space-2);
}

.form label {
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.form input,
.form textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  transition:
    border-color var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease);
}

.form input {
  min-height: 3rem;
  color-scheme: dark;
}

.form textarea {
  resize: vertical;
  min-height: 8rem;
}

.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.25);
}

.form__note {
  font-size: var(--fs-small);
  color: var(--text-muted);
  text-align: center;
}

@media (min-width: 64em) {
  .contact__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: start;
  }

  .contact__photo {
    display: block;
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    object-position: center 20%;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: 0 0 60px -20px var(--accent-glow);
  }
}

/* --------------------------------------------------------------------------
   5.7 Footer
   -------------------------------------------------------------------------- */
.site-footer {
  padding-block: var(--space-7);
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}

.site-footer__tagline {
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-5);
}

.site-footer__links a {
  display: inline-block;
  padding-block: var(--space-2);
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color var(--t-base) var(--ease);
}

.site-footer__links a:hover {
  color: var(--accent-strong);
}

.site-footer__copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   5.8 Animazioni allo scroll
   Attive solo con JavaScript (classe .js su <html>, aggiunta in index.html).
   -------------------------------------------------------------------------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 700ms var(--ease),
    transform 700ms var(--ease);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   6. Breakpoint
   -------------------------------------------------------------------------- */
@media (min-width: 48em) {
  :root {
    --gutter: 2rem;
    --header-h: 4.5rem;
  }
}

@media (min-width: 64em) {
  :root {
    --gutter: 2.5rem;
  }
}

/* --------------------------------------------------------------------------
   7. Preferenze utente
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}