/* =========================================================
   Freedomtrek — foglio di stile condiviso
   Mobile first. Breakpoint: 640px e 1024px, nessun altro.
   ========================================================= */

:root {
  /* --- Colori --- */
  --color-primary: #1F3D7A;      /* blu scuro: testi, header, pulsanti primari */
  --color-primary-rgb: 31, 61, 122; /* stesso blu, per l'overlay semitrasparente sull'hero */
  --color-primary-dark: #142a57; /* hover/focus su elementi primari */
  --color-accent-blue: #4A9BD1;  /* azzurro logo: elementi decorativi (bordi, sfondi, pallini) */
  --color-accent-blue-hover: #346C92;         /* azzurro scurito: testo hover/focus su sfondi chiari, 5.67:1 su bianco */
  --color-accent-blue-hover-on-dark: #92C3E3; /* azzurro schiarito: testo hover/focus su sfondi scuri, 5.55:1 su blu primario */
  --color-accent-green: #7CB342; /* verde logo: accenti, badge, dettagli */
  --color-accent-red: #C0392B;   /* rosso: livello EE della scala CAI */

  --color-bg: #ffffff;
  --color-bg-alt: #eaf4fb;       /* azzurro molto tenue: sezioni in evidenza */
  --color-bg-footer: #f4f7fa;

  --color-text: #1a2433;         /* quasi nero, leggibile su bianco */
  --color-text-muted: #4d5b6e;
  --color-text-on-primary: #ffffff;
  --color-text-on-primary-muted: rgba(255, 255, 255, 0.85); /* testo corrente su sfondo blu scuro (footer) */

  --color-border: #d8e3ee;
  --color-focus: #4A9BD1;

  /* --- Tipografia --- */
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;

  --line-height-base: 1.6;
  --line-height-heading: 1.2;

  /* --- Spaziature: scala coerente in rem --- */
  --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: 4rem;
  --space-9: 6rem;

  /* --- Layout --- */
  --container-max: 72rem;
  --container-padding: var(--space-4);
  --radius: 0.25rem;
  --photo-max-width: 480px; /* larghezza massima delle foto affiancate al testo, su desktop */

  /* --- Interazione --- */
  --transition-fast: 150ms ease;
  --touch-target: 44px;
  --fade-in-duration: 300ms;  /* fade-in delle sezioni allo scroll, solo in index.html */
  --fade-in-translate: 12px;
}

/* =========================================================
   Reset di base
   ========================================================= */

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

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

body {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
}

main {
  flex: 1 0 auto;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  line-height: var(--line-height-heading);
  color: var(--color-primary);
  margin: 0 0 var(--space-4);
}

h1 {
  font-size: var(--font-size-3xl);
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-lg);
}

p {
  margin: 0 0 var(--space-4);
}

img {
  width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* Focus visibile ovunque, mai rimosso senza sostituto */
a:focus-visible,
button:focus-visible,
label:focus-visible,
input:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

/* =========================================================
   Pulsanti
   ========================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius);
  border: 2px solid var(--color-primary);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background-color: var(--color-bg-alt);
}

/* =========================================================
   Header e navigazione
   ========================================================= */

.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding-block: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.logo {
  display: inline-flex;
  align-items: center;
}

.logo img {
  width: auto;
  height: 3rem;
  border-radius: 50%;
}

.brand-text {
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
}

.brand-tagline {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.affiliation {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-left: var(--space-3);
  border-left: 1px solid var(--color-border);
}

.affiliation img {
  width: auto;
  height: 2rem;
}

/* Checkbox nascosta: attiva/disattiva il menu mobile senza JS */
.nav-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.nav-toggle-label {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: var(--touch-target);
  height: var(--touch-target);
  cursor: pointer;
}

.nav-toggle-label span {
  display: block;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
}

.site-nav {
  flex-basis: 100%;
  order: 3;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-fast);
}

.nav-toggle:checked ~ .site-nav {
  max-height: 20rem;
}

.site-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-top: var(--space-4);
}

.site-nav a {
  display: flex;
  align-items: center;
  min-height: var(--touch-target);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-accent-blue-hover);
  border-color: var(--color-accent-blue);
}

.site-nav a.is-active {
  color: var(--color-primary);
  border-color: var(--color-accent-green);
}

@media (min-width: 640px) {
  .nav-toggle-label {
    display: none;
  }

  .site-nav {
    flex-basis: auto;
    order: 2;
    max-height: none;
    overflow: visible;
  }

  .site-nav ul {
    flex-direction: row;
    gap: var(--space-6);
    padding-top: 0;
  }
}

/* =========================================================
   Hero
   ========================================================= */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  padding-block: var(--space-7);
  min-height: 20rem;
  background-color: var(--color-primary);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  /* Velo scuro sulla foto: garantisce almeno 4.5:1 di contrasto al
     testo bianco anche sopra le zone più chiare dell'immagine (cielo). */
  background-color: rgba(var(--color-primary-rgb), 0.78);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  padding-block: var(--space-6);
  color: var(--color-text-on-primary);
}

.hero h1 {
  color: var(--color-text-on-primary);
}

.hero-subtitle {
  max-width: 34rem;
  margin: 0 0 var(--space-5);
  color: var(--color-text-on-primary);
  font-size: var(--font-size-lg);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

.link-underline {
  display: inline-flex;
  align-items: center;
  min-height: var(--touch-target);
  color: var(--color-text-on-primary);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 2px solid var(--color-accent-green);
  transition: opacity var(--transition-fast);
}

.link-underline:hover,
.link-underline:focus-visible {
  opacity: 0.8;
}

.hero-wave {
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  width: 100%;
  height: auto;
  z-index: 1;
  pointer-events: none;
}

.hero-wave path {
  fill: var(--color-bg);
}

@media (min-width: 640px) {
  .hero {
    overflow: hidden;
    aspect-ratio: 16 / 9;
    max-height: none;
    min-height: 22rem;
    padding-block: 0;
  }
}

@media (min-width: 1024px) {
  .hero {
    align-items: flex-end;
    aspect-ratio: 21 / 9;
    min-height: 27rem;
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
}

/* =========================================================
   In evidenza: come funziona + prossima escursione
   ========================================================= */

/* Foto affiancata al testo: impilata a piena larghezza su mobile,
   affiancata su desktop senza superare --photo-max-width. Ogni foto
   applica anche una classe .photo-3-4 / .photo-narrow (o simile) per
   il proprio aspect-ratio reale, senza tagli forzati. */
.photo-pair {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.photo-pair-photo {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.photo-pair-content {
  min-width: 0;
}

@media (min-width: 1024px) {
  .photo-pair {
    flex-direction: row;
    align-items: flex-start;
  }

  .photo-pair-photo {
    flex: 0 1 33%;
    max-width: var(--photo-max-width);
  }

  .photo-pair-content {
    flex: 1;
  }
}

.photo-3-4 {
  aspect-ratio: 3 / 4;
}

.photo-narrow {
  aspect-ratio: 594 / 1321;
}

.home-highlights {
  display: grid;
  gap: var(--space-6);
  padding-block: var(--space-8);
}

.highlight-item .dot {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  margin-bottom: var(--space-3);
}

.highlight-item .dot--green {
  background-color: var(--color-accent-green);
}

.highlight-item .dot--blue {
  background-color: var(--color-accent-blue);
}

.highlight-item .dot--primary {
  background-color: var(--color-primary);
}

.highlight-item h2 {
  margin-bottom: var(--space-2);
  font-size: var(--font-size-lg);
}

.highlight-item p {
  color: var(--color-text-muted);
  margin-bottom: 0;
}

@media (min-width: 1024px) {
  .home-highlights {
    grid-template-columns: repeat(3, 1fr) 1.3fr;
    align-items: start;
  }
}

.next-hike-card {
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-accent-green);
  border-radius: var(--radius);
  padding: var(--space-5);
  background-color: var(--color-bg);
}

.next-hike-label {
  display: block;
  color: var(--color-accent-green);
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.next-hike-card h3 {
  margin-bottom: var(--space-2);
}

.next-hike-meta {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin: 0 0 var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.next-hike-details p {
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.next-hike-details p:last-child {
  margin-bottom: 0;
}

.next-hike-details strong {
  color: var(--color-primary);
}

.past-hikes-note {
  padding-block: var(--space-5) var(--space-6);
  text-align: center;
}

.past-hikes-note p {
  max-width: 34rem;
  margin-inline: auto;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.past-hikes-note a {
  color: var(--color-primary);
  font-weight: 600;
}

/* =========================================================
   Componenti di pagina condivisi (escursioni, chi-siamo,
   diventa-socio, contatti)
   ========================================================= */

.page-header {
  padding-block: var(--space-7) var(--space-6);
  background-color: var(--color-bg-alt);
  text-align: center;
}

.accent-bars {
  display: flex;
  justify-content: center;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.accent-bars span {
  display: block;
  width: 2.5rem;
  height: 4px;
  border-radius: 2px;
}

.accent-bars span:first-child {
  background-color: var(--color-accent-green);
}

.accent-bars span:last-child {
  background-color: var(--color-accent-blue);
}

.page-lead {
  max-width: 34rem;
  margin: 0 auto;
  color: var(--color-text-muted);
  font-size: var(--font-size-lg);
}

.section {
  padding-block: var(--space-7);
}

.section--alt {
  background-color: var(--color-bg-alt);
}

.section h2 {
  margin-bottom: var(--space-5);
}

.fie-content {
  max-width: 34rem;
  margin-inline: auto;
}

.fie-logo {
  max-width: 6rem;
  margin: 0 auto var(--space-6);
}

.fie-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.fie-list li {
  position: relative;
  padding-left: calc(1.25rem + var(--space-3));
  color: var(--color-text);
}

.fie-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 1.25rem;
  height: 2px;
  background-color: var(--color-accent-green);
}

.card-grid {
  display: grid;
  gap: var(--space-6);
}

.card {
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-bg);
}

.card h2,
.card h3 {
  margin-bottom: var(--space-3);
  font-size: var(--font-size-lg);
}

.card p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.card p:last-child {
  margin-bottom: 0;
}

.placeholder-note {
  color: var(--color-text-muted);
  font-style: italic;
}

@media (min-width: 1024px) {
  .card-grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .card-grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* =========================================================
   Elenco escursioni
   ========================================================= */

.hike-list {
  display: flex;
  flex-direction: column;
}

.hike-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.hike-card-date {
  width: 3.5rem;
  text-align: center;
  flex-shrink: 0;
}

.hike-card-day {
  display: block;
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  line-height: 1;
}

.hike-card-month {
  display: block;
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hike-card-body {
  flex: 1 1 14rem;
  min-width: 0;
}

.hike-card-title {
  margin: 0 0 var(--space-1);
  font-size: var(--font-size-lg);
}

.hike-card-place {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.hike-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-4);
  margin-top: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.hike-card-difficulty {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--color-primary);
}

.hike-card-difficulty .dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.hike-card .btn {
  flex-shrink: 0;
}

.difficulty-legend {
  margin-top: var(--space-7);
}

@media (min-width: 1024px) {
  /* Qui la foto sta un po' più piccola che altrove: stessa variabile
     di base, solo scalata verso il basso per questo punto specifico. */
  .difficulty-legend .photo-pair-photo {
    max-width: calc(var(--photo-max-width) * 0.75);
  }
}

.difficulty-legend-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin: var(--space-5) 0 var(--space-6);
}

.difficulty-legend-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.difficulty-legend-list .dot {
  width: 0.9rem;
  height: 0.9rem;
  margin-top: 0.35em;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot--t {
  background-color: var(--color-accent-green);
}

.dot--e {
  background-color: var(--color-accent-blue);
}

.dot--ee {
  background-color: var(--color-accent-red);
}

.difficulty-legend-list strong {
  display: block;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.difficulty-legend-list p {
  margin: 0;
  color: var(--color-text-muted);
}

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

.tip-box {
  background-color: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: var(--space-5);
  margin-top: var(--space-6);
  color: var(--color-text-muted);
}

.tip-box strong {
  color: var(--color-primary);
}

.tip-box p:last-child {
  margin-bottom: 0;
}

.section-footer-link {
  margin: var(--space-6) 0 0;
  text-align: center;
}

/* =========================================================
   Diventa socio
   ========================================================= */

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

@media (min-width: 1024px) {
  .socio-grid {
    grid-template-columns: 1fr 1.2fr;
    align-items: stretch;
  }
}

.pricing-col {
  display: flex;
}

.pricing-card {
  display: flex;
  flex-direction: column;
  flex: 1;
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  border-radius: var(--radius);
  padding: var(--space-6);
}

.pricing-benefits {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  list-style: none;
}

.pricing-benefits li {
  position: relative;
  padding-left: calc(1.25rem + var(--space-3));
  color: var(--color-text-on-primary);
}

.pricing-benefits li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 1.25rem;
  height: 2px;
  background-color: var(--color-accent-green);
}

.pricing-card .eyebrow {
  display: block;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  letter-spacing: 0.06em;
  opacity: 0.8;
}

.pricing-card .price {
  font-family: var(--font-serif);
  font-size: var(--font-size-3xl);
  margin: var(--space-2) 0;
}

.pricing-card .price-note {
  opacity: 0.9;
  margin: 0;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  list-style: none;
  counter-reset: step;
}

.steps-list li {
  position: relative;
  counter-increment: step;
  min-height: 2rem;
  padding-left: calc(2rem + var(--space-3));
  color: var(--color-text-muted);
}

.steps-list li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: var(--font-size-sm);
}

.info-list dt {
  font-weight: 700;
  color: var(--color-primary);
}

.info-list dd {
  margin: 0 0 var(--space-3);
  color: var(--color-text-muted);
}

/* =========================================================
   Footer
   ========================================================= */

.site-footer {
  flex-shrink: 0;
  background-color: var(--color-primary);
  color: var(--color-text-on-primary-muted);
  padding-block: var(--space-4);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-align: center;
  font-size: var(--font-size-sm);
}

.footer-inner p {
  margin: 0;
}

.site-footer a {
  color: var(--color-text-on-primary);
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--color-accent-blue-hover-on-dark);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-1) var(--space-4);
}

.footer-links a {
  text-decoration: underline;
}

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* =========================================================
   Fade-in delle sezioni allo scroll (solo index.html)

   Lo stato nascosto (opacity 0, spostata in basso) si applica
   solo quando lo script fade-in.js aggiunge .fade-in-ready al
   body: se il JS non gira, .fade-section non ha mai opacity 0
   di default e il contenuto resta visibile.
   ========================================================= */

body.fade-in-ready .fade-section {
  opacity: 0;
  transform: translateY(var(--fade-in-translate));
}

body.fade-in-ready .fade-section.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--fade-in-duration) ease-out,
              transform var(--fade-in-duration) ease-out;
}

@media (prefers-reduced-motion: reduce) {
  body.fade-in-ready .fade-section {
    opacity: 1;
    transform: none;
    transition: none;
  }
}