/* ==========================================================================
   VERSO — Landing page (smoke test)
   Tema personalizzabile: cambia le variabili qui sotto, il resto del CSS
   si aggiorna automaticamente. Font caricati via Google Fonts (vedi index.html).
   ========================================================================== */

:root {
  /* Colori */
  --color-primary: #6b3f2e;        /* marrone caldo, richiama botaniche/distillati */
  --color-primary-dark: #4a2b1f;
  --color-secondary: #c98a4b;      /* ambra/oro, caldo e artigianale */
  --color-accent: #7a8c6d;         /* verde salvia, tocco botanico */

  --color-bg: #faf6f1;             /* crema chiaro, caldo */
  --color-bg-alt: #f1e9df;         /* sezione alternata */
  --color-surface: #ffffff;

  --color-text: #2b241f;
  --color-text-muted: #6b6058;
  --color-text-on-primary: #ffffff;

  --color-border: #e4d9cb;

  /* Tipografia */
  --font-heading: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --fs-base: 1rem;
  --fs-sm: 0.875rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.375rem;
  --fs-2xl: 1.75rem;
  --fs-3xl: 2.25rem;
  --fs-4xl: 2.75rem;

  /* Spaziatura / layout */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --max-width: 1120px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-sm: 0 2px 8px rgba(43, 36, 31, 0.06);
  --shadow-md: 0 8px 24px rgba(43, 36, 31, 0.10);

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
}

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

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

img {
  max-width: 100%;
  display: block;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.2;
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
  font-weight: 600;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

section {
  padding: var(--space-2xl) 0;
}

/* Focus visibile per accessibilità da tastiera */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* ==========================================================================
   Header / Nav
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 246, 241, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-sm);
  padding-bottom: var(--space-sm);
}

.logo {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-primary-dark);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.main-nav {
  display: none;
}

.main-nav ul {
  display: flex;
  gap: var(--space-md);
}

.main-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.header-inner .header-cta {
  display: none;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  padding: 0;
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  position: relative;
  transition: transform var(--transition-fast);
}

.nav-toggle-bar::before {
  position: absolute;
  top: -6px;
}

.nav-toggle-bar::after {
  position: absolute;
  top: 6px;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-sm) 0 var(--space-md);
  border-top: 1px solid var(--color-border);
}

.mobile-nav.is-open {
  display: flex;
}

.mobile-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-size: var(--fs-lg);
  font-weight: 500;
}

.mobile-nav .btn {
  margin-top: var(--space-xs);
  align-self: flex-start;
}

@media (min-width: 860px) {
  .main-nav {
    display: block;
  }

  .header-inner .header-cta {
    display: inline-flex;
  }

  .nav-toggle {
    display: none;
  }

  .mobile-nav {
    display: none !important;
  }
}

/* ==========================================================================
   Bottoni
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.85em 1.6em;
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base), transform var(--transition-fast);
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
}

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

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

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 1em 2em;
  font-size: var(--fs-lg);
}

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

.hero {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.hero-content {
  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-primary-dark);
  font-size: var(--fs-sm);
  font-weight: 600;
  padding: 0.4em 1em;
  border-radius: 999px;
  margin-bottom: var(--space-md);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-secondary);
  flex-shrink: 0;
}

.hero-title {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-sm);
  color: var(--color-primary-dark);
}

.hero-subtitle {
  font-size: var(--fs-lg);
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.hero-actions .btn {
  width: 100%;
}

.hero-visual {
  order: -1;
}

.hero-placeholder {
  /* SOSTITUIRE con foto prodotto reale */
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 55%, var(--color-primary-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  text-align: center;
  padding: var(--space-md);
  box-shadow: var(--shadow-md);
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }

  .hero-actions .btn {
    width: auto;
  }
}

@media (min-width: 960px) {
  .hero-inner {
    flex-direction: row;
    align-items: center;
    gap: var(--space-xl);
  }

  .hero-content {
    text-align: left;
    flex: 1;
  }

  .hero-subtitle {
    margin-left: 0;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .hero-title {
    font-size: var(--fs-4xl);
  }

  .hero-visual {
    order: 0;
    flex: 1;
  }
}

/* ==========================================================================
   Sezioni generiche
   ========================================================================== */

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

.section-header {
  text-align: center;
  max-width: 56ch;
  margin: 0 auto var(--space-lg);
}

.section-title {
  font-size: var(--fs-2xl);
  color: var(--color-primary-dark);
}

.section-lead {
  color: var(--color-text-muted);
  font-size: var(--fs-lg);
}

/* ==========================================================================
   Come funziona — step
   ========================================================================== */

.steps {
  display: grid;
  gap: var(--space-md);
}

.step-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  box-shadow: var(--shadow-sm);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5em;
  height: 2.5em;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--fs-lg);
  margin-bottom: var(--space-xs);
}

.step-card h3 {
  font-size: var(--fs-xl);
}

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

@media (min-width: 760px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   Vantaggi
   ========================================================================== */

.benefits {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

.benefit-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
}

.benefit-icon {
  width: 3em;
  height: 3em;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
  font-size: var(--fs-xl);
}

.benefit-card h3 {
  font-size: var(--fs-lg);
}

.benefit-card p {
  color: var(--color-text-muted);
  margin-bottom: 0;
  font-size: var(--fs-sm);
}

@media (min-width: 640px) {
  .benefits {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .benefits {
    grid-template-columns: repeat(3, 1fr);
  }

  .benefit-card:nth-child(4),
  .benefit-card:nth-child(5) {
    grid-column: span 1;
  }
}

/* ==========================================================================
   Perché nasce VERSO
   ========================================================================== */

.about {
  max-width: 68ch;
  margin: 0 auto;
  text-align: center;
}

.about p {
  font-size: var(--fs-lg);
  color: var(--color-text);
}

/* ==========================================================================
   CTA finale + Form
   ========================================================================== */

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

.signup .section-title,
.signup .section-lead {
  color: var(--color-text-on-primary);
}

.signup .section-lead {
  opacity: 0.85;
}

.signup-form {
  max-width: 480px;
  margin: 0 auto;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-md);
  box-shadow: var(--shadow-md);
  color: var(--color-text);
}

.form-field {
  margin-bottom: var(--space-sm);
  text-align: left;
}

.form-field label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-bottom: 0.4em;
}

.form-field input[type="text"],
.form-field input[type="email"] {
  width: 100%;
  padding: 0.75em 1em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  font-family: inherit;
  background-color: var(--color-bg);
  color: var(--color-text);
}

.form-field input:focus {
  border-color: var(--color-primary);
}

.form-field-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.6em;
  text-align: left;
}

.form-field-checkbox input {
  margin-top: 0.3em;
  flex-shrink: 0;
  width: 1.1em;
  height: 1.1em;
}

.form-field-checkbox label {
  font-size: var(--fs-sm);
  font-weight: 400;
  color: var(--color-text-muted);
}

.form-error {
  color: #b3261e;
  font-size: var(--fs-sm);
  margin-top: 0.4em;
  min-height: 1.2em;
}

.form-status {
  margin-top: var(--space-sm);
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  background-color: #eaf3e8;
  color: #365f2e;
  font-size: var(--fs-sm);
  text-align: center;
  display: none;
}

.form-status.is-visible {
  display: block;
}

.signup-form.is-submitted .form-fields {
  display: none;
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq-list {
  max-width: 68ch;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: var(--space-sm) 0;
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.faq-icon {
  flex-shrink: 0;
  width: 1.4em;
  height: 1.4em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  font-size: var(--fs-base);
  transition: transform var(--transition-base);
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-answer p {
  color: var(--color-text-muted);
  padding-bottom: var(--space-sm);
  margin-bottom: 0;
}

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

.site-footer {
  padding: var(--space-lg) 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  border-top: 1px solid var(--color-border);
}

.site-footer p {
  margin-bottom: 0.3em;
}

/* ==========================================================================
   Utility
   ========================================================================== */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}