/* ===================================================================
   AppuntiEasy — Design System
   Piattaforma AI EdTech — Stile: Moderno, tech-friendly, SaaS premium
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap');

/* ===== CSS CUSTOM PROPERTIES (Design Tokens) ===== */
:root {
  /* Colori — Palette EdTech/AI: viola-blu profondo + accento vivace */
  --color-primary: #0D9488;
  --color-primary-light: #14B8A6;
  --color-primary-dark: #115E59;
  --color-primary-rgb: 13, 148, 136;
  --color-secondary: #1E293B;
  --color-secondary-rgb: 30, 41, 59;
  --color-accent: #F97316;
  --color-accent-rgb: 249, 115, 22;
  --color-bg: #FAFAF9;
  --color-bg-alt: #F1F5F9;
  --color-bg-dark: #1E293B;
  --color-text: #1E293B;
  --color-text-light: #475569;
  --color-text-muted: #64748B;
  --color-text-inverse: #FFFFFF;
  --color-border: #E2E8F0;
  --color-success: #10B981;
  --color-error: #EF4444;

  /* Gradienti */
  --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  --gradient-hero: linear-gradient(135deg, #115E59 0%, #0D9488 50%, #14B8A6 100%);
  --gradient-cta: linear-gradient(135deg, var(--color-primary), #14B8A6);
  --gradient-subtle: linear-gradient(180deg, var(--color-bg), var(--color-bg-alt));
  --gradient-accent: linear-gradient(135deg, #F97316, #EA580C);
  --gradient-card: linear-gradient(180deg, rgba(var(--color-primary-rgb), 0.03), rgba(var(--color-primary-rgb), 0.08));

  /* Tipografia — FLUIDA con clamp() */
  --font-heading: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: clamp(1.25rem, 1rem + 0.5vw, 1.5rem);
  --font-size-2xl: clamp(1.5rem, 1.25rem + 1vw, 2rem);
  --font-size-3xl: clamp(2rem, 1.5rem + 2vw, 2.75rem);
  --font-size-4xl: clamp(2.5rem, 1.75rem + 3vw, 4rem);
  --font-size-5xl: clamp(3rem, 2rem + 4vw, 5rem);
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --line-height-tight: 1.1;
  --line-height-snug: 1.3;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;
  --letter-spacing-tight: -0.02em;
  --letter-spacing-wide: 0.05em;
  --letter-spacing-wider: 0.1em;

  /* Spaziatura — scala generosa */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;
  --section-padding: clamp(4rem, 8vw, 8rem);

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --container-padding: clamp(1.25rem, 4vw, 3rem);
  --border-radius-sm: 0.375rem;
  --border-radius: 0.75rem;
  --border-radius-lg: 1.25rem;
  --border-radius-xl: 2rem;
  --border-radius-full: 50%;

  /* Ombre — STRATIFICATE per profondita realistica */
  --shadow-sm: 0 1px 2px rgba(13, 148, 136, 0.04), 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(13, 148, 136, 0.06), 0 2px 4px rgba(0,0,0,0.04), 0 12px 20px rgba(13, 148, 136, 0.04);
  --shadow-lg: 0 8px 16px rgba(13, 148, 136, 0.08), 0 4px 8px rgba(0,0,0,0.04), 0 24px 48px rgba(13, 148, 136, 0.06);
  --shadow-xl: 0 16px 32px rgba(13, 148, 136, 0.1), 0 8px 16px rgba(0,0,0,0.06), 0 32px 64px rgba(13, 148, 136, 0.08);
  --shadow-glow: 0 0 20px rgba(var(--color-primary-rgb), 0.2), 0 0 40px rgba(var(--color-primary-rgb), 0.1);
  --shadow-card-hover: 0 20px 40px rgba(13, 148, 136, 0.12), 0 8px 16px rgba(0,0,0,0.06);

  /* Transizioni */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===== RESET COMPLETO ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}
img, video, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
ul, ol { list-style: none; }

/* ===== TIPOGRAFIA ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text);
}
h1 { font-size: var(--font-size-5xl); font-weight: var(--font-weight-extrabold); }
h2 { font-size: var(--font-size-3xl); font-weight: var(--font-weight-bold); }
h3 { font-size: var(--font-size-xl); font-weight: var(--font-weight-semibold); }
h4 { font-size: var(--font-size-lg); font-weight: var(--font-weight-semibold); }
p { margin-bottom: var(--space-md); }
.text-lg { font-size: var(--font-size-lg); line-height: var(--line-height-relaxed); }
.text-sm { font-size: var(--font-size-sm); }
.text-muted { color: var(--color-text-muted); }
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== LAYOUT ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}
.container--narrow { max-width: var(--max-width-narrow); }
.section { padding-block: var(--section-padding); }
.section--alt { background: var(--color-bg-alt); }
.section--dark {
  background: var(--gradient-hero);
  color: var(--color-text-inverse);
}
.section--dark h2, .section--dark h3 { color: var(--color-text-inverse); }
.section--dark .section-title::after {
  background: var(--gradient-accent);
}
.section--dark .text-muted,
.section--dark .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}
/* Reset colori dentro card con sfondo chiaro in sezioni dark */
.section--dark .feature-card h3 { color: var(--color-text); }
.section--dark .feature-card .text-muted { color: var(--color-text-muted); }

/* Titoli di sezione con decorazione */
.section-title {
  font-size: var(--font-size-3xl);
  text-align: center;
  margin-bottom: var(--space-lg);
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--gradient-primary);
  margin: var(--space-md) auto 0;
  border-radius: 2px;
}
.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
  line-height: var(--line-height-relaxed);
}

/* ===== HEADER / NAVBAR ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(250, 251, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(var(--color-primary-rgb), 0.08);
  transition: all var(--transition-normal);
}
.header.scrolled {
  box-shadow: var(--shadow-md);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-primary);
  letter-spacing: var(--letter-spacing-tight);
}
.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-xl);
}
.nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-light);
  transition: color var(--transition-fast);
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width var(--transition-normal);
}
.nav__link:hover { color: var(--color-primary); }
.nav__link:hover::after { width: 100%; }
.nav__actions {
  display: none;
  align-items: center;
  gap: var(--space-md);
}
.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}
.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: all var(--transition-fast);
}
@media (min-width: 768px) {
  .nav__links { display: flex; }
  .nav__actions { display: flex; }
  .nav__toggle { display: none; }
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  padding: var(--space-xl) var(--container-padding);
  z-index: 999;
  flex-direction: column;
  gap: var(--space-lg);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

/* Body padding per header fisso */
body { padding-top: 72px; }

/* ===== HERO ===== */
.hero {
  padding: clamp(4rem, 10vw, 8rem) 0 clamp(3rem, 8vw, 6rem);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero--dark {
  background: var(--gradient-hero);
  color: var(--color-text-inverse);
}
.hero--dark h1, .hero--dark h2 { color: var(--color-text-inverse); }
.hero--dark .hero__subtitle { color: rgba(255, 255, 255, 0.8); }
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--color-primary-rgb), 0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--color-accent-rgb), 0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin-inline: auto;
}
.hero__title {
  margin-bottom: var(--space-lg);
  line-height: var(--line-height-tight);
}
.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
}
.hero__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}
.hero__note {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}
.hero--dark .hero__note { color: rgba(255, 255, 255, 0.6); }
@media (min-width: 640px) {
  .hero__actions {
    flex-direction: row;
    justify-content: center;
  }
}

/* ===== BOTTONI — PREMIUM ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.875rem 2rem;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-md), 0 0 0 0 rgba(var(--color-primary-rgb), 0);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(var(--color-primary-rgb), 0.3);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text-light);
  padding: 0.625rem 1.25rem;
}
.btn-ghost:hover {
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.06);
}
.btn-accent {
  background: var(--gradient-accent);
  color: #FFFFFF;
  font-weight: var(--font-weight-bold);
  box-shadow: var(--shadow-md);
}
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(var(--color-accent-rgb), 0.3);
}
.btn--lg {
  padding: 1.1rem 2.75rem;
  font-size: var(--font-size-lg);
  border-radius: var(--border-radius-lg);
}
.btn--sm { padding: 0.625rem 1.25rem; font-size: var(--font-size-sm); }
.btn--full { width: 100%; }

/* ===== CARD — con hover lift sofisticato ===== */
.card {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  border: 1px solid rgba(var(--color-primary-rgb), 0.06);
}
.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(var(--color-primary-rgb), 0.12);
}
.card__img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.card:hover .card__img { transform: scale(1.05); }
.card__body { padding: var(--space-lg); }
.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}
.card__desc {
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* ===== FEATURE CARD — stile icona-box ===== */
.feature-card {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  border-radius: var(--border-radius-lg);
  background: var(--color-bg);
  border: 1px solid rgba(var(--color-primary-rgb), 0.06);
  transition: all var(--transition-normal);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(var(--color-primary-rgb), 0.15);
}

/* ===== ICONE — SVG inline o contenitori ===== */
.icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  fill: currentColor;
}
.icon--lg { width: 48px; height: 48px; }
.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--border-radius);
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
  font-size: 1.75rem;
  transition: all var(--transition-normal);
}
.icon-box:hover,
*:hover > .icon-box {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  transform: scale(1.1);
}
.icon-box--accent {
  background: rgba(var(--color-accent-rgb), 0.12);
  color: #14B8A6;
}
.icon-box--accent:hover,
*:hover > .icon-box--accent {
  background: var(--gradient-accent);
  color: #FFFFFF;
}

/* ===== GRIGLIA ===== */
.grid { display: grid; gap: var(--space-xl); }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
.grid--4 { grid-template-columns: 1fr; }
@media (min-width: 640px) {
  .grid--2, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 768px) {
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* ===== STEPS / COME FUNZIONA ===== */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  counter-reset: step;
  position: relative;
}
.step {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  position: relative;
}
.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-full);
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}
.step__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}
.step__desc {
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}
@media (min-width: 768px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps::before {
    content: '';
    position: absolute;
    top: 28px;
    left: 20%;
    right: 20%;
    height: 2px;
    background: linear-gradient(90deg, rgba(var(--color-primary-rgb), 0.15), rgba(var(--color-primary-rgb), 0.3), rgba(var(--color-primary-rgb), 0.15));
    z-index: 0;
  }
}

/* ===== TESTIMONIALS ===== */
.testimonial-card {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(var(--color-primary-rgb), 0.06);
  position: relative;
  transition: all var(--transition-normal);
}
.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: var(--space-lg);
  left: var(--space-xl);
  font-size: 4rem;
  font-family: var(--font-heading);
  color: rgba(var(--color-primary-rgb), 0.12);
  line-height: 1;
}
.testimonial__quote {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
  font-style: italic;
  position: relative;
  z-index: 1;
}
.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.testimonial__avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-full);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}
.testimonial__name {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}
.testimonial__role {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ===== PRICING CARDS (SaaS) ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: stretch;
}
@media (min-width: 768px) {
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
}
.pricing-card {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  position: relative;
  border: 2px solid transparent;
  display: flex;
  flex-direction: column;
}
.pricing-card .btn { margin-top: auto; }
.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.pricing-card--popular {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}
.pricing-card--popular:hover {
  transform: translateY(-4px);
}
.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  padding: 0.25rem 1rem;
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
}
.pricing-plan-name {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-xs);
}
.pricing-plan-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}
.pricing-price {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  line-height: 1;
  margin-bottom: var(--space-xs);
}
.pricing-price span {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-muted);
}
.pricing-features {
  margin: var(--space-lg) 0;
}
.pricing-features li {
  padding: var(--space-sm) 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
}
.pricing-features li .check {
  color: var(--color-success);
  fill: none;
  flex-shrink: 0;
}
.pricing-features li .x {
  color: var(--color-error);
  fill: none;
  opacity: 0.7;
  flex-shrink: 0;
}
.pricing-features li.disabled {
  color: var(--color-text-muted);
  opacity: 0.65;
}

/* ===== SOCIAL PROOF STRIP ===== */
.social-proof {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  padding: var(--space-lg) 0;
}
.social-proof__item {
  text-align: center;
}
.social-proof__number {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}
.social-proof__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ===== FEATURE STRIP / BADGE ROW ===== */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1rem;
  background: rgba(var(--color-primary-rgb), 0.06);
  border: 1px solid rgba(var(--color-primary-rgb), 0.1);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-light);
  transition: all var(--transition-normal);
}
.badge:hover {
  background: rgba(var(--color-primary-rgb), 0.1);
  transform: translateY(-2px);
}

/* ===== FAQ ACCORDION ===== */
.faq-list { max-width: var(--max-width-narrow); margin-inline: auto; }
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  text-align: left;
  cursor: pointer;
  color: var(--color-text);
  transition: color var(--transition-fast);
}
.faq-question:hover { color: var(--color-primary); }
.faq-question .faq-icon {
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  font-size: 1.25rem;
  color: var(--color-primary);
}
.faq-item.open .faq-question .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding-bottom: var(--space-lg);
}
.faq-answer p {
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* ===== BILLING TOGGLE ===== */
.billing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}
.billing-toggle__switch {
  width: 48px;
  height: 26px;
  background: var(--color-border);
  border-radius: 13px;
  position: relative;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.billing-toggle__switch.active { background: var(--color-primary); }
.billing-toggle__switch::after {
  content: '';
  position: absolute;
  width: 22px; height: 22px;
  background: white;
  border-radius: 50%;
  top: 2px; left: 2px;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}
.billing-toggle__switch.active::after { transform: translateX(22px); }
.billing-save {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

/* ===== FORM — CONTATTI ===== */
.form {
  max-width: var(--max-width-narrow);
  margin-inline: auto;
}
.form-group {
  margin-bottom: var(--space-lg);
}
.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}
.form-input,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  outline: none;
}
.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}
.form-textarea {
  min-height: 150px;
  resize: vertical;
}

/* ===== CTA SECTION ===== */
.cta-section {
  text-align: center;
  padding: clamp(4rem, 8vw, 7rem) 0;
  background: var(--gradient-hero);
  color: var(--color-text-inverse);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--color-accent-rgb), 0.15) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section h2 { color: var(--color-text-inverse); margin-bottom: var(--space-md); }
.cta-section p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
}
.cta-section .hero__note { color: rgba(255, 255, 255, 0.6); }

/* ===== PROBLEM SECTION ===== */
.problem-card {
  padding: var(--space-xl);
  border-radius: var(--border-radius-lg);
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.04), rgba(239, 68, 68, 0.08));
  border: 1px solid rgba(239, 68, 68, 0.1);
  transition: all var(--transition-normal);
  height: 100%;
}
.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.problem-card .icon-box {
  background: rgba(239, 68, 68, 0.1);
  color: #EF4444;
}
.problem-card:hover .icon-box {
  background: #EF4444;
  color: var(--color-text-inverse);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-3xl) 0 var(--space-xl);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}
.footer__brand {
  margin-bottom: var(--space-lg);
}
.footer__logo {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-md);
}
.footer__desc {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: rgba(255, 255, 255, 0.5);
  max-width: 300px;
}
.footer__col-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-inverse);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}
.footer__link {
  display: block;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.5);
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}
.footer__link:hover { color: #14B8A6; }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.4);
}
@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .footer__bottom { flex-direction: row; justify-content: space-between; }
}

/* ===== STICKY CTA MOBILE ===== */
@media (max-width: 767px) {
  .sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-bg);
    padding: var(--space-md) var(--container-padding);
    box-shadow: 0 -4px 12px rgba(0,0,0,0.1);
    z-index: 100;
    display: flex;
    gap: var(--space-sm);
  }
  .sticky-cta .btn { flex: 1; }
  body.has-sticky-cta { padding-bottom: 80px; }
}
@media (min-width: 768px) {
  .sticky-cta { display: none; }
}

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.hidden { display: none; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }
.mx-auto { margin-inline: auto; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

/* ===== ANIMAZIONI SCROLL ===== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}
.animate-on-scroll--delay-1 { transition-delay: 0.1s; }
.animate-on-scroll--delay-2 { transition-delay: 0.2s; }
.animate-on-scroll--delay-3 { transition-delay: 0.3s; }
.animate-on-scroll--delay-4 { transition-delay: 0.4s; }
@media (prefers-reduced-motion: reduce) {
  .animate-on-scroll { opacity: 1; transform: none; transition: none; }
}

/* ===== ACCESSIBILITY ===== */
.skip-to-content {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: 0 0 var(--border-radius-sm) var(--border-radius-sm);
  z-index: 9999;
  transition: top var(--transition-fast);
}
.skip-to-content:focus { top: 0; }
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}