:root {
  --blue-950: hsl(233, 26%, 24%);
  --green-500: hsl(136, 64%, 51%);
  --cyan-400: hsl(192, 69%, 51%);
  --gray-600: hsl(233, 8%, 62%);
  --gray-100: hsl(220, 16%, 96%);
  --gray-50: hsl(0, 0%, 98%);
  --white: hsl(0, 100%, 100%);
  --gradient: linear-gradient(90deg, var(--green-500), var(--cyan-400));
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

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

body {
  margin: 0;
  font-family: 'Public Sans', system-ui, -apple-system, sans-serif;
  font-size: 18px;
  color: var(--blue-950);
  background: var(--gray-50);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--gradient);
  color: var(--white);
  padding: 0.75rem 1rem;
  z-index: 30;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

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

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

p {
  color: var(--gray-600);
  line-height: 1.6;
}

h1,
h2,
h3 {
  margin: 0 0 0.75rem;
  font-weight: 700;
  color: var(--blue-950);
}

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

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.button {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.button--primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: var(--shadow);
}

.button--ghost {
  background: transparent;
  color: var(--blue-950);
  border: 1px solid var(--gray-100);
}

.button:hover,
.button:focus-visible {
  opacity: 0.85;
  transform: translateY(-1px);
}

.site-header {
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

.nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding: 1.1rem 0;
}

.nav__brand img {
  width: 140px;
}

.logo--dark-bg {
  display: none;
}

[data-theme="dark"] .logo--light-bg {
  display: none;
}

[data-theme="dark"] .logo--dark-bg {
  display: block;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  justify-content: center;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav__actions .icon-moon {
  display: none;
}

[data-theme="dark"] .nav__actions .icon-moon {
  display: inline;
}

[data-theme="dark"] .nav__actions .icon-sun {
  display: none;
}

.nav__links a {
  position: relative;
  font-size: 0.95rem;
  color: var(--gray-600);
  padding: 0.5rem 0;
}

.nav__links a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease;
}

.nav__links a:hover::after,
.nav__links a:focus-visible::after {
  transform: scaleX(1);
}

.nav__links a:hover,
.nav__links a:focus-visible {
  color: var(--blue-950);
}

.nav__cta {
  justify-self: end;
}

.nav__actions .theme-toggle {
  padding: 0.65rem 1rem;
  border-radius: 999px;
}

.nav__toggle {
  display: none;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0.5rem;
}

.nav__toggle-icon {
  width: 26px;
  height: 18px;
}

.nav__toggle .close {
  display: none;
}

.hero {
  background: var(--gray-50);
  overflow: hidden;
  padding: 3rem 0 5rem;
}

.hero__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: center;
  gap: 2rem;
}

.hero__content h1 {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  line-height: 1.1;
}

.hero__content p {
  margin-bottom: 2rem;
}

.hero__visual {
  position: relative;
  min-height: 500px;
}

.hero__background {
  position: absolute;
  inset: -15% -30% 0 10%;
  border-radius: 0 0 0 100px;
  overflow: hidden;
  pointer-events: none;
}

.hero__background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__mockups {
  position: absolute;
  inset: -8% -20% 0 auto;
  width: 120%;
}

.pricing {
  background: var(--white);
  padding: 5rem 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.pricing__card {
  display: grid;
  gap: 0.75rem;
  text-align: left;
}

.pricing__card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 0.5rem;
  display: grid;
  gap: 0.35rem;
  color: var(--gray-600);
}

.pricing__label {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-600);
}

.pricing__price {
  font-size: 2rem;
  font-weight: 700;
}

.pricing__price span {
  font-size: 1rem;
  color: var(--gray-600);
}

.pricing__card--highlight {
  border: 2px solid var(--cyan-400);
}

.testimonials {
  background: var(--gray-100);
  padding: 5rem 0;
}

.testimonial__viewport {
  overflow: hidden;
  position: relative;
}

.testimonial__track {
  display: flex;
  gap: 0;
  transition: transform 0.3s ease;
}

.testimonial {
  min-width: 100%;
  flex-shrink: 0;
  text-align: left;
}

.testimonial__quote {
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--blue-950);
}

.testimonial__author {
  color: var(--gray-600);
  font-weight: 700;
  margin-top: 0.75rem;
}

.testimonial__controls {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.faq {
  background: var(--gray-50);
  padding: 5rem 0;
}

.faq__list {
  display: grid;
  gap: 1rem;
}

.faq__item {
  background: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 1rem;
}

.faq__question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  font: inherit;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq__icon {
  font-weight: 700;
  color: var(--cyan-400);
}

[data-theme="dark"] .faq__question {
  color: #e5e7eb;
}

[data-theme="dark"] .faq__icon {
  color: #7dd3fc;
}

[data-theme="dark"] .faq__question:hover .faq__icon,
[data-theme="dark"] .faq__question:focus-visible .faq__icon {
  color: #38bdf8;
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  color: var(--gray-600);
  transition: max-height 0.2s ease;
}

[data-theme="dark"] .faq__answer {
  color: #cbd5e1;
}

.faq__answer--open {
  max-height: 200px;
  margin-top: 0.5rem;
}

.features {
  background: var(--gray-100);
  padding: 5rem 0;
}

.section-heading {
  max-width: 550px;
}

.section-heading p {
  margin: 0 0 2.5rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--white);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.feature__icon {
  width: 70px;
  margin-bottom: 1.5rem;
}

.articles {
  background: var(--gray-50);
  padding: 5rem 0;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.article {
  padding: 0;
  overflow: hidden;
}

.article__image {
  display: block;
  height: 180px;
}

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

.article__body {
  padding: 1.5rem;
}

.article__author {
  font-size: 0.85rem;
  color: var(--gray-600);
  margin: 0 0 0.5rem;
}

.article h3 {
  margin-bottom: 0.75rem;
}

.article a {
  color: var(--blue-950);
  transition: color 0.2s ease;
}

.article a:hover,
.article a:focus-visible {
  color: var(--green-500);
}

.site-footer {
  background: var(--blue-950);
  color: var(--white);
  padding: 3rem 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  align-items: center;
}

.footer__brand img {
  width: 140px;
  margin-bottom: 1.25rem;
}

.footer__social {
  display: flex;
  gap: 0.75rem;
}

.footer__social a {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.footer__social a:hover,
.footer__social a:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.footer__links {
  display: grid;
  gap: 0.75rem;
}

.footer__links a {
  color: var(--white);
  font-weight: 500;
  font-size: 1rem;
  transition: color 0.2s ease;
}

.footer__links a:hover,
.footer__links a:focus-visible {
  color: var(--green-500);
}

.footer__cta {
  text-align: right;
}

.footer__cta p {
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.7);
}

@media (min-width: 960px) {
  .footer__grid {
    grid-template-columns: 1.2fr 1fr 1fr auto;
  }

  .footer__cta {
    display: grid;
    gap: 0.5rem;
    justify-items: end;
  }
}

@media (max-width: 720px) {
  .site-footer {
    text-align: center;
  }

  .footer__cta {
    text-align: center;
  }

  .footer__cta p {
    text-align: center;
  }
}

.contact {
  background: var(--gray-100);
  padding: 5rem 0;
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  align-items: start;
}

.contact__form {
  display: grid;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field span {
  font-weight: 600;
  color: var(--blue-950);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--gray-100);
  background: var(--gray-50);
  font: inherit;
  color: var(--blue-950);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--cyan-400);
  box-shadow: 0 0 0 3px rgba(0, 195, 255, 0.15);
  outline: none;
}

.input-error {
  border-color: #d14343;
  box-shadow: 0 0 0 3px rgba(209, 67, 67, 0.12);
}

.error {
  min-height: 1rem;
  color: #d14343;
  font-size: 0.9rem;
}

.form-status {
  margin: 0;
  color: var(--blue-950);
  font-weight: 600;
}

.contact__details {
  padding-left: 1rem;
  margin: 0 0 0.5rem 0;
  color: var(--gray-600);
  line-height: 1.5;
}

.contact__details li {
  margin-bottom: 0.35rem;
}

.contact__note {
  color: var(--gray-600);
  font-size: 0.95rem;
}

.contact__map {
  margin: 1rem 0;
  border-radius: 8px;
  height: 200px;
  border: 1px solid var(--gray-100);
  overflow: hidden;
}

.contact__map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

[data-theme="dark"] .contact__map {
  border-color: #334155;
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 20;
}

.modal--open {
  display: flex;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(2px);
}

.modal__content {
  position: relative;
  background: var(--white);
  border-radius: 12px;
  padding: 1.5rem;
  width: min(500px, 92vw);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
  z-index: 1;
}

.modal__close {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

.modal__form {
  display: grid;
  gap: 1rem;
}

[data-theme="dark"] {
  --blue-950: #e5e7eb;
  --gray-600: #cbd5e1;
  --gray-100: #1e293b;
  --gray-50: #0b1220;
  --white: #0f172a;
  background: #0b1220;
  color: #e5e7eb;
}

body[data-theme="dark"] {
  background: #0b1220;
  color: #e5e7eb;
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3 {
  color: #e5e7eb;
}

[data-theme="dark"] p,
[data-theme="dark"] .article__author,
[data-theme="dark"] .contact__details,
[data-theme="dark"] .form-status,
[data-theme="dark"] .section-heading p {
  color: #cbd5e1;
}

[data-theme="dark"] .card,
[data-theme="dark"] .site-header,
[data-theme="dark"] .modal__content {
  background: #111827;
  color: #e5e7eb;
}

[data-theme="dark"] .nav__links a {
  color: #cbd5e1;
}

[data-theme="dark"] .nav__links a:hover,
[data-theme="dark"] .nav__links a:focus-visible {
  color: #fff;
}

[data-theme="dark"] .button--ghost {
  color: #e5e7eb;
  border-color: #334155;
}

[data-theme="dark"] .articles,
[data-theme="dark"] .features,
[data-theme="dark"] .pricing,
[data-theme="dark"] .faq,
[data-theme="dark"] .testimonials,
[data-theme="dark"] .contact,
[data-theme="dark"] .pricing,
[data-theme="dark"] .articles,
[data-theme="dark"] .features {
  background: #0f172a;
}

[data-theme="dark"] .site-footer {
  background: #0b1220;
}

[data-theme="dark"] .testimonial__quote {
  color: #e5e7eb;
}

[data-theme="dark"] .contact__map {
  border-color: #334155;
}

[data-theme="dark"] .nav__actions .icon-sun {
  display: none;
}

[data-theme="dark"] .nav__actions .icon-moon {
  display: inline;
}

.no-scroll {
  overflow: hidden;
}

@media (max-width: 960px) {
  .nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .nav__links {
    position: absolute;
    top: 72px;
    left: 5%;
    right: 5%;
    flex-direction: column;
    background: var(--white);
    padding: 1.2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.2s ease;
    z-index: 9;
  }

  .nav__links a {
    width: 100%;
    text-align: center;
  }

  .nav__links--open {
    transform: scaleY(1);
  }

  .nav__cta {
    display: none;
  }

  .nav__actions {
    margin-left: 0;
    gap: 0.4rem;
  }

  .nav__toggle {
    margin-left: auto;
  }

  .nav__toggle {
    display: block;
    justify-self: end;
  }

  .nav__toggle[aria-expanded="true"] .open {
    display: none;
  }

  .nav__toggle[aria-expanded="true"] .close {
    display: block;
  }

  .nav__actions {
    gap: 0.5rem;
  }

  .hero {
    padding-top: 0;
  }

  .hero__grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .hero__visual {
    order: -1;
    min-height: 420px;
  }

  .hero__background {
    inset: -10% -5% 30% -5%;
  }

  .hero__mockups {
    inset: -20% -10% 0 -10%;
    width: 120%;
    margin: 0 auto;
  }

  .features,
  .articles {
    padding: 4rem 0;
  }

  .footer__grid {
    text-align: center;
  }

  .footer__cta {
    text-align: center;
  }

  .footer__social {
    justify-content: center;
  }
}

@media (max-width: 540px) {
  body {
    font-size: 16px;
  }

  .article__image {
    height: 200px;
  }
}

@media (max-width: 720px) {
  .section-heading {
    text-align: center;
    margin: 0 auto 2rem;
  }

  .pricing-grid,
  .article-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .pricing__card,
  .testimonial,
  .faq__item,
  .contact__form,
  .contact__details {
    text-align: center;
  }

  .testimonial__controls {
    justify-content: center;
  }

  .contact__grid {
    gap: 1.5rem;
  }

  .contact__map {
    height: 240px;
  }

  .testimonial {
    text-align: center;
  }
}
.nav__actions .theme-toggle {
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
  justify-content: center;
  min-width: 44px;
}
[data-theme="dark"] .footer__links a,
[data-theme="dark"] .footer__social a img {
  filter: brightness(1.2);
  color: #e5e7eb;
}

[data-theme="dark"] .footer__links a:hover,
[data-theme="dark"] .footer__links a:focus-visible {
  color: #cbd5e1;
}

[data-theme="dark"] .faq__item {
  background: #111827;
  border: 1px solid #1f2937;
}

[data-theme="dark"] .faq__answer {
  color: #cbd5e1;
}