/* Base */
:root {
  --bg: #0b1223;
  --bg-alt: #0f1b35;
  --surface: rgba(255, 255, 255, 0.075);
  --surface-strong: rgba(255, 255, 255, 0.12);
  --text: #f6f7ff;
  --muted: rgba(246, 247, 255, 0.75);
  --primary: #4d8cff;
  --primary-2: #00c9ff;
  --accent: #ff6b6b;
  --radius: 16px;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.35);
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, rgba(77, 140, 255, 0.28), transparent 57%),
    linear-gradient(160deg, #0b1223 0%, #0c1528 50%, #0f1b35 100%);
  min-height: 100vh;
}

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

.container {
  width: min(100% - 2rem, var(--max-width));
  margin: 0 auto;
}

button,
input,
textarea {
  font-family: inherit;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(11, 18, 35, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: 1.1rem;
}

.brand__dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  margin-right: 0.55rem;
  box-shadow: 0 10px 25px rgba(77, 140, 255, 0.35);
}

.nav {
  display: flex;
  gap: 1.35rem;
  align-items: center;
}

.nav__link {
  position: relative;
  font-weight: 500;
  padding: 0.25rem 0;
  transition: color 160ms ease;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.3rem;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  margin: 4px 0;
  transition: transform 180ms ease, opacity 180ms ease;
}

/* Hero */
.hero {
  padding: 6.5rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.hero__content h1 {
  font-size: clamp(2.15rem, 3.2vw, 3.1rem);
  margin: 0 0 1.2rem;
  line-height: 1.1;
}

.hero__content p {
  margin: 0 0 1.8rem;
  max-width: 540px;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  cursor: pointer;
  text-decoration: none;
  font-weight: 600;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.btn--primary {
  background: linear-gradient(120deg, var(--primary), var(--primary-2));
  color: #0b1223;
  border-color: transparent;
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
}

.btn:active {
  transform: translateY(0);
}

.hero__visual {
  position: relative;
}

.code-card {
  padding: 2rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  overflow: hidden;
}

.code-card pre {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New",
    monospace;
  font-size: 0.85rem;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.92);
  overflow-x: auto;
}

.code-card code {
  white-space: pre-wrap;
}

/* Sections */
.section {
  padding: 5.5rem 0;
}

.section--alt {
  background: rgba(255, 255, 255, 0.04);
}

.section--cta {
  padding: 6rem 0;
  background: radial-gradient(circle at top, rgba(77, 140, 255, 0.22), transparent 58%),
    linear-gradient(160deg, rgba(15, 27, 53, 0.98) 0%, rgba(11, 18, 35, 0.92) 100%);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}

.section-header h2 {
  margin: 0 0 0.8rem;
  font-size: 2.1rem;
}

.section-header p {
  margin: 0;
  color: var(--muted);
}

.services {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.7rem;
}

.service-card {
  padding: 2rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  transition: transform 200ms ease, border-color 200ms ease;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(77, 140, 255, 0.35);
}

.service-card__icon {
  width: 3.1rem;
  height: 3.1rem;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.14);
  margin-bottom: 1.25rem;
  font-size: 1.7rem;
}

.service-card h3 {
  margin: 0 0 0.75rem;
}

.service-card p {
  margin: 0;
  color: var(--muted);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2.4rem;
}

.about-grid h3 {
  margin-top: 0;
}

.about-grid ul {
  padding-left: 1.2rem;
  margin: 1rem 0 0;
  color: var(--muted);
}

.about-grid li {
  margin-bottom: 0.65rem;
}

.testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
}

.testimonial {
  padding: 2.3rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
}

.testimonial p {
  margin: 0 0 1.3rem;
  line-height: 1.6;
  color: var(--muted);
}

.testimonial footer {
  font-size: 0.9rem;
  color: rgba(246, 247, 255, 0.6);
}

.cta-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.cta-list {
  list-style: none;
  padding: 0;
  margin: 1.6rem 0 0;
  color: var(--muted);
}

.cta-list li {
  margin-bottom: 0.9rem;
}

.contact-form {
  padding: 2.2rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  display: grid;
  gap: 1.25rem;
}

.contact-form h3 {
  margin: 0 0 0.5rem;
}

.contact-form label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: rgba(246, 247, 255, 0.8);
}

.contact-form input,
.contact-form textarea {
  border-radius: 14px;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(77, 140, 255, 0.6);
  box-shadow: 0 0 0 3px rgba(77, 140, 255, 0.18);
}

.form-feedback {
  margin: 0;
  font-size: 0.95rem;
  min-height: 1.3rem;
  color: rgba(255, 255, 255, 0.7);
}

.site-footer {
  padding: 2.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(11, 18, 35, 0.8);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  color: rgba(246, 247, 255, 0.7);
}

.footer-meta a {
  color: rgba(246, 247, 255, 0.75);
  text-decoration: underline;
}

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

  .cta-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav {
    position: absolute;
    inset: 0;
    margin: 5.5rem 0 0;
    padding: 2.8rem 1.5rem;
    flex-direction: column;
    gap: 1.5rem;
    background: rgba(11, 18, 35, 0.96);
    transform: translateY(-100%);
    transition: transform 220ms ease;
  }

  .nav--open {
    transform: translateY(0);
  }

  .nav-toggle {
    display: inline-flex;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
    transition: none !important;
    animation: none !important;
  }
}