:root {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", "Segoe UI", Roboto, sans-serif;
  background: #000000;
  color: #f2f2f2;
  display: grid;
  place-items: center;
  padding: 2rem;
  position: relative;
  overflow-x: hidden;
}

.video-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
  opacity: 0.4;
}

.business-card {
  width: min(820px, 100%);
  border-radius: 24px;
  padding: clamp(1.6rem, 4vw, 3rem);
  display: grid;
  gap: 2rem;
  position: relative;
}

.logo {
  position: absolute;
  top: clamp(1rem, 4vw, 3rem);
  right: clamp(0.5rem, 4vw, 3rem);
  margin: 0;
  padding: clamp(0.6rem, 1.5vw, 1rem);
  border-radius: 12px;
  display: flex;
  align-items: center;
}

.logo img {
  height: clamp(1rem, 10vw, 20rem);
  width: auto;
  display: block;
}

.service {
  margin: 0.5rem 0 0;
  color: #d4d4d4;
  font-size: clamp(1rem, 2.3vw, 1.35rem);
}

header h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0;
}

.features-list {
  margin: 0.8rem 0 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.35rem;
  color: #d4d4d4;
  line-height: 1.5;
  font-size: clamp(0.9rem, 2vw, 1rem);
}

.contacts-block {
  display: grid;
  gap: 0.9rem;
}

.phone-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  background: #ffffff;
  color: #050505;
  text-decoration: none;
  font-size: clamp(1.25rem, 4vw, 2rem);
  font-weight: 800;
  padding: 0.9rem 1.4rem;
  border-radius: 999px;
  transition:
    transform 120ms ease,
    box-shadow 120ms ease;
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
}

.phone-button:hover,
.phone-button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(255, 255, 255, 0.28);
  outline: none;
}

.contact-line {
  margin: 0;
  color: #cfcfcf;
  font-size: 1rem;
  line-height: 1.6;
}

.contact-line a {
  color: #f2f2f2;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

section h2 {
  margin: 0;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #dddddd;
}

ul {
  margin: 0.65rem 0 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.4rem;
  color: #d9d9d9;
  line-height: 1.5;
}

.company-info {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.company-details {
  margin: 0;
  display: grid;
  gap: 0.15rem;
  color: #a8a8a8;
  line-height: 1.3;
  font-size: 0.8rem;
}

.detail-line {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
}

.detail-label {
  white-space: nowrap;
  color: #888888;
  font-weight: 500;
  width: 5.5rem;
  text-align: right;
}

@media (max-width: 520px) {
  body {
    padding: 1rem;
  }

  .business-card {
    border-radius: 18px;
  }

  .phone-button {
    width: 100%;
  }
}