:root {
  --primary: #f46300;
  --primary-dark: #d65400;
  --primary-soft: rgba(244, 99, 0, 0.12);
  --primary-line: rgba(244, 99, 0, 0.22);
  --bg: #f6f7f8;
  --bg-soft: #eef1f4;
  --panel: rgba(255, 255, 255, 0.66);
  --panel-strong: rgba(255, 255, 255, 0.88);
  --text: #1a1a1a;
  --muted: #6b7280;
  --line: rgba(148, 163, 184, 0.22);
  --shadow: 0 22px 60px rgba(15, 23, 42, 0.09);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(244, 99, 0, 0.08), transparent 28%),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.9), transparent 24%),
    linear-gradient(180deg, #f8fafc 0%, #eef2f6 100%);
}

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

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

.page-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.12)),
    url("https://sviluppatoremigliore.com/content/images/background/sfondo-trama.png");
  opacity: 0.35;
}

.page-wrap {
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(16px);
  background: rgba(246, 247, 248, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.45);
}

.site-header__inner,
.shell {
  width: min(1060px, calc(100% - 28px));
  margin: 0 auto;
}

.site-header__inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.03em;
}

.topnav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 0.94rem;
}

.shell {
  padding: 26px 0 72px;
}

.glass-panel,
.glass-card,
.detail-card,
.deep-card,
.testimonial-card,
.checkout-card {
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.55);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 24px;
  border-radius: 30px;
  padding: 24px;
}

.hero__summary {
  min-width: 0;
}

.eyebrow,
.checkout-card__eyebrow,
.detail-card__eyebrow,
.payment-box__title {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.04em;
}

h1,
h2 {
  font-family: "Roboto Slab", serif;
}

h1 {
  font-size: clamp(2.3rem, 4.8vw, 4rem);
  line-height: 1.02;
  max-width: 560px;
}

h2 {
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  line-height: 1.08;
}

h3 {
  font-size: 1.12rem;
}

.hero__lead,
.detail-card p,
.deep-card li,
.testimonial-card__quote,
.author-card__copy p,
.payment-box__text,
.checkout-message {
  color: var(--muted);
  line-height: 1.72;
}

.hero__lead {
  max-width: 560px;
  margin: 18px 0 24px;
  font-size: 1.05rem;
}

.hero__book-stage {
  display: grid;
  grid-template-columns: 270px 1fr;
  gap: 22px;
  align-items: center;
}

.hero__book-card {
  border-radius: 24px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.62);
  padding: 16px;
}

.hero__book-card img {
  width: 100%;
  height: auto;
}

.hero__book-copy {
  display: grid;
  gap: 14px;
}

.mini-stat {
  padding: 14px 16px;
  border-radius: 18px;
  background: var(--panel-strong);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.mini-stat__label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.mini-stat__value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text);
}

.quick-list,
.bullet-list,
.ordered-list {
  margin: 0;
  padding-left: 18px;
}

.quick-list {
  display: grid;
  gap: 8px;
  line-height: 1.6;
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.hero__trust span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid rgba(255, 255, 255, 0.62);
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.checkout-card {
  border-radius: 28px;
  overflow: hidden;
}

.checkout-card__head {
  padding: 22px 22px 18px;
  background:
    linear-gradient(180deg, rgba(244, 99, 0, 0.98) 0%, rgba(214, 84, 0, 0.96) 100%);
  color: #fff;
}

.checkout-card__head h2 {
  margin-bottom: 12px;
  font-size: 2rem;
}

.price-badge {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.price-badge__old {
  text-decoration: line-through;
  opacity: 0.72;
}

.price-badge__now {
  font-size: 2.2rem;
  font-weight: 800;
}

.checkout-form {
  padding: 20px 22px 22px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.checkout-form label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 13px;
  font-size: 0.86rem;
  font-weight: 600;
}

.checkout-form input,
.checkout-form select {
  width: 100%;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.26);
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  font: inherit;
}

.checkout-form input:focus,
.checkout-form select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(244, 99, 0, 0.14);
}

.payment-box {
  margin: 6px 0 16px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.66);
}

.payment-box__text {
  margin: 0 0 12px;
  font-size: 0.92rem;
}

.payment-element {
  min-height: 94px;
  padding: 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.loading-state {
  color: var(--muted);
}

.submit-button {
  width: 100%;
  min-height: 56px;
  border: 0;
  border-radius: 16px;
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  font: inherit;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 18px 34px rgba(244, 99, 0, 0.22);
}

.submit-button:disabled {
  opacity: 0.7;
  cursor: wait;
}

.checkout-message {
  min-height: 24px;
  margin: 12px 2px 0;
  font-size: 0.92rem;
}

.section {
  padding-top: 56px;
}

.section-heading {
  margin-bottom: 20px;
}

.glass-grid,
.deep-grid,
.testimonials-grid {
  display: grid;
  gap: 16px;
}

.glass-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 18px;
}

.glass-card,
.detail-card,
.deep-card,
.testimonial-card {
  border-radius: 24px;
}

.glass-card {
  padding: 20px;
}

.glass-card p,
.deep-card li {
  margin: 10px 0 0;
}

.content-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 16px;
  margin-bottom: 16px;
}

.detail-card {
  padding: 22px;
}

.detail-card--strong {
  background: rgba(244, 99, 0, 0.08);
  border: 1px solid rgba(244, 99, 0, 0.18);
}

.detail-card p {
  margin: 0 0 14px;
}

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

.ordered-list {
  display: grid;
  gap: 10px;
  line-height: 1.65;
}

.deep-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.deep-card {
  padding: 22px;
}

.bullet-list {
  display: grid;
  gap: 10px;
  line-height: 1.65;
  margin-top: 14px;
}

.section--soft {
  padding: 28px;
  margin-top: 56px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.38);
  border: 1px solid rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(14px);
}

.testimonials-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.testimonial-card {
  padding: 22px;
}

.testimonial-card__avatar {
  width: 78px;
  height: 78px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid rgba(244, 99, 0, 0.24);
  margin-bottom: 16px;
}

.testimonial-card__quote {
  margin: 0 0 16px;
  font-style: italic;
}

.testimonial-card strong {
  display: block;
  margin-bottom: 4px;
}

.testimonial-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

.author-card {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 22px;
  border-radius: 30px;
  padding: 24px;
}

.author-card__photo {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  border-radius: 24px;
}

.author-card__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.author-card__copy p {
  margin: 0 0 14px;
}

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

@media (max-width: 980px) {
  .hero,
  .content-columns,
  .author-card {
    grid-template-columns: 1fr;
  }

  .checkout-card {
    max-width: 520px;
  }
}

@media (max-width: 760px) {
  .site-header__inner {
    min-height: auto;
    padding: 16px 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .topnav {
    flex-wrap: wrap;
  }

  .hero {
    padding: 18px;
  }

  .hero__book-stage,
  .glass-grid,
  .deep-grid,
  .testimonials-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .section--soft {
    padding: 20px;
  }

  .checkout-card__head,
  .checkout-form {
    padding-left: 16px;
    padding-right: 16px;
  }
}