:root {
  --bg: #050b18;
  --bg-alt: #0d1625;
  --card-bg: #0f192a;
  --accent: #3ea6ff;
  --accent-soft: rgba(62, 166, 255, 0.15);
  --text: #f7f9fc;
  --muted: #9aa4bc;
  --border: #1f2937;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.45);
  --transition: 0.2s ease;
  --max-width: 1080px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
  background: radial-gradient(circle at top, #13213a 0, #050b18 55%);
  color: var(--text);
  line-height: 1.6;
}

/* Layout basics */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: radial-gradient(circle at top left, #18233a 0, #050b18 65%);
}

h1, h2, h3 {
  font-weight: 650;
  letter-spacing: -0.03em;
}

h2 {
  font-size: 2.1rem;
  margin-bottom: 18px;
}

.section-subtitle {
  color: var(--muted);
  margin-bottom: 40px;
}

/* Header */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(5, 11, 24, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo-block {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  width: 32px;
  height: 32px;
  border-radius: 9px;
}

.logo-text {
  font-weight: 650;
  letter-spacing: -0.04em;
}

.nav {
  display: flex;
  gap: 18px;
  align-items: center;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition), transform var(--transition);
}

.nav a:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.nav-cta {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

/* Mobile nav */

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 999px;
}

/* Hero */

.hero {
  padding: 80px 0 70px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 40px;
  align-items: center;
}

.hero-logo {
  width: 120px;
  margin-bottom: 10px;
  display: block;
}

.hero-text h1 {
  font-size: clamp(2.4rem, 4vw, 3.1rem);
  margin-bottom: 14px;
}

.accent {
  color: var(--accent);
}

.hero-subtitle {
  color: var(--muted);
  font-size: 1rem;
  max-width: 530px;
  margin-bottom: 22px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 10px;
}

.hero-note {
  color: var(--muted);
  font-size: 0.9rem;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 550;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition),
              box-shadow var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, #3ea6ff, #4adeff);
  color: #020617;
  box-shadow: 0 12px 30px rgba(62, 166, 255, 0.45);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(62, 166, 255, 0.6);
}

.btn-outline {
  background: rgba(15, 23, 42, 0.7);
  border-color: rgba(148, 163, 184, 0.4);
  color: var(--text);
}

.btn-outline:hover {
  background: rgba(30, 64, 175, 0.6);
  border-color: rgba(148, 163, 184, 0.9);
}

.btn-large {
  padding: 13px 26px;
  font-size: 1rem;
}

/* Hero card */

.hero-card {
  background: radial-gradient(circle at top, #1c2640 0, #050816 65%);
  border-radius: 26px;
  padding: 18px 18px 20px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.22);
}

.hero-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  font-size: 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
}

.hero-card-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin-bottom: 6px;
}

.hero-card-summary {
  font-size: 0.95rem;
  margin-bottom: 14px;
}

.hero-card-divider {
  height: 1px;
  background: rgba(148, 163, 184, 0.35);
  margin: 10px 0 14px;
}

/* Hero audio demo */

.hero-audio-demo {
  margin-bottom: 14px;
}

.hero-audio-demo audio {
  width: 100%;
  border-radius: 999px;
  outline: none;
}

/* Transcript */

.hero-card-transcript {
  font-size: 0.83rem;
  color: var(--muted);
}

.hero-card-transcript .transcript-text {
  font-size: 0.83rem;
  color: var(--muted);
}

.transcript-full {
  display: none;
}

.transcript-text.transcript-expanded .transcript-full {
  display: inline;
}

.transcript-toggle {
  margin-top: 6px;
  border: none;
  background: transparent;
  color: var(--accent);
  font-size: 0.78rem;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* Steps */

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.step {
  background: rgba(15, 23, 42, 0.8);
  border-radius: var(--radius-lg);
  padding: 18px 18px 20px;
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.step-number {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 8px;
}

.step h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

/* Case study: verbale riunione */

.case-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 28px;
  align-items: flex-start;
}

.case-audios,
.case-doc {
  background: rgba(15, 23, 42, 0.88);
  border-radius: var(--radius-xl);
  padding: 20px 20px 22px;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.case-audios h3,
.case-doc h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.case-intro {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 14px;
}

.case-audio-list {
  list-style: none;
  font-size: 0.9rem;
  color: var(--muted);
}

.case-audio-list li + li {
  margin-top: 10px;
}

.case-audio-list h4 {
  font-size: 0.95rem;
  margin-bottom: 3px;
  color: var(--text);
}

.case-doc-preview {
  margin: 12px 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.8);
}

.case-doc-preview img {
  display: block;
  width: 100%;
  height: auto;
}

.case-doc-note {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 12px;
}

.case-doc-btn {
  width: 100%;
  justify-content: center;
}

/* Features */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.feature {
  background: rgba(15, 23, 42, 0.85);
  border-radius: var(--radius-lg);
  padding: 18px 18px 20px;
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.feature h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

/* Pricing */

.billing-toggle {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.4);
  margin-bottom: 26px;
}

.billing-label {
  font-size: 0.8rem;
  cursor: pointer;
  color: var(--muted);
}

.billing-label.active {
  color: var(--text);
  font-weight: 600;
}

.billing-switch {
  position: relative;
  width: 40px;
  height: 20px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.6);
}

.billing-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: var(--accent);
  transition: transform var(--transition);
}

/* yearly active */
body.yearly .billing-knob {
  transform: translateX(18px);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.pricing-card {
  background: rgba(15, 23, 42, 0.88);
  border-radius: var(--radius-xl);
  padding: 22px 20px 24px;
  border: 1px solid rgba(148, 163, 184, 0.26);
  position: relative;
}

.pricing-card-featured {
  background: radial-gradient(circle at top, #1d4ed8 0, #020617 65%);
  border-color: rgba(191, 219, 254, 0.7);
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.55);
}

.pricing-badge {
  position: absolute;
  top: 14px;
  right: 16px;
  font-size: 0.75rem;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(191, 219, 254, 0.6);
}

.pricing-card h3 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.pricing-tagline {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 12px;
}

.pricing-price {
  margin-bottom: 14px;
}

.price-amount {
  font-size: 1.8rem;
  font-weight: 650;
}

.price-period {
  font-size: 0.9rem;
  color: var(--muted);
  margin-left: 4px;
}

.price-yearly {
  display: none;
}

body.yearly .price-monthly {
  display: none;
}

body.yearly .price-yearly {
  display: inline;
}

.pricing-features {
  list-style: none;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 18px;
}

.pricing-features li {
  margin-bottom: 6px;
}

.pricing-note {
  margin-top: 18px;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Use cases */

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.usecase {
  background: rgba(15, 23, 42, 0.85);
  border-radius: var(--radius-lg);
  padding: 18px 18px 20px;
  border: 1px solid rgba(148, 163, 184, 0.26);
}

.usecase h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

/* Testimonials */

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.testimonial {
  background: rgba(15, 23, 42, 0.88);
  border-radius: var(--radius-lg);
  padding: 18px 18px 20px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  font-size: 0.9rem;
}

.testimonial-text {
  margin-bottom: 10px;
}

.testimonial-author {
  color: var(--muted);
  font-size: 0.85rem;
}

/* FAQ */

.faq-list {
  max-width: 780px;
}

.faq-item {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: rgba(15, 23, 42, 0.9);
  margin-bottom: 10px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 12px 16px;
  background: transparent;
  color: var(--text);
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 0.95rem;
}

.faq-icon {
  margin-left: 10px;
  font-size: 1.1rem;
  color: var(--muted);
  transition: transform var(--transition);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
  padding: 0 16px;
}

.faq-answer p {
  padding-bottom: 12px;
  font-size: 0.9rem;
  color: var(--muted);
}

.faq-item.open .faq-answer {
  max-height: 200px;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

/* CTA */

.cta {
  background: radial-gradient(circle at center, #1d4ed8 0, #020617 70%);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.cta h2 {
  margin-bottom: 8px;
}

.cta p {
  color: #e0f2fe;
}

/* Footer */

.footer {
  border-top: 1px solid rgba(148, 163, 184, 0.25);
  padding: 18px 0 24px;
  background: #020617;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--muted);
}

.footer-brand {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.footer-logo {
  width: 40px;
  height: 40px;
  border-radius: 12px;
}

.footer-text-block p + p {
  margin-top: 4px;
}

.footer-company {
  font-size: 0.82rem;
}

.footer-company a {
  color: var(--muted);
  text-decoration: none;
}

.footer-company a:hover {
  color: var(--text);
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: var(--text);
}

/* Responsive */

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-card {
    max-width: 420px;
    margin: 0 auto;
  }

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

  .case-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .header-inner {
    height: 60px;
  }

  .nav {
    position: fixed;
    inset: 60px 0 auto 0;
    background: rgba(3, 7, 18, 0.98);
    flex-direction: column;
    padding: 14px 20px 18px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.25);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }

  .nav a {
    font-size: 0.95rem;
  }

  .header-inner.nav-open .nav {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .steps,
  .features-grid,
  .pricing-grid,
  .usecases-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}