:root {
  --bg: #e8e8e8;
  --ink: #121212;
  --paper: #f8f8f8;
  --card-dark: #1f2024;
  --line: #cccccc;
  --accent: #659796;
  --accent-soft: #b9b9c0;
  --shadow: 0 16px 32px rgba(0, 0, 0, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 0% 0%, rgba(255, 255, 255, 0.75), transparent 26%),
    radial-gradient(circle at 100% 100%, rgba(0, 0, 0, 0.05), transparent 25%),
    var(--bg);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.4rem;
  background: rgba(232, 232, 232, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.brand {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(1.4rem, 2vw, 2rem);
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-left: auto;
}

.main-nav a {
  text-decoration: none;
  border-radius: 999px;
  padding: 0.45rem 0.7rem;
  font-weight: 600;
  transition: background-color 160ms ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  background: #dadada;
}

.main-nav .is-active {
  background: #121212;
  color: #ffffff;
}

.contact-btn {
  text-decoration: none;
  border-radius: 999px;
  padding: 0.55rem 0.85rem;
  background: #f5cf1f;
  color: #232323;
  font-weight: 700;
  white-space: nowrap;
}

.layout {
  width: min(1200px, 92%);
  margin: 1.2rem auto 2.8rem;
  display: grid;
  gap: 1rem;
}

.hero {
  background: linear-gradient(135deg, #161616, #2b2b2b);
  color: #ffffff;
  border-radius: 0.35rem;
  padding: clamp(1rem, 4vw, 2.5rem);
  box-shadow: var(--shadow);
}

.hero h1 {
  font-family: "Bebas Neue", sans-serif;
  letter-spacing: 0.04em;
  font-size: clamp(2rem, 8vw, 5rem);
  margin-bottom: 0.35rem;
}

.kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  margin-bottom: 0.4rem;
  opacity: 0.9;
}

.strip {
  background: #000000;
  color: #f5f5f5;
  text-align: center;
  padding: 0.9rem;
  font-size: clamp(1rem, 2vw, 1.35rem);
}

.strip.light {
  background: #b1b1b3;
  color: #ffffff;
}

.strip a {
  color: #ffffff;
  font-weight: 700;
}

.home-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem;
  justify-items: center;
  padding: 0.8rem 0;
}

.feature-card {
  width: 100%;
  min-height: 170px;
  border-radius: 0.2rem;
  border: 1px solid #3c3c3c;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: clamp(1.1rem, 2vw, 1.55rem);
  padding: 1rem;
  position: relative;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.feature-card.dark {
  background: var(--card-dark);
  color: #f4f4f4;
}

.feature-card strong {
  position: absolute;
  right: 0.65rem;
  bottom: 0.45rem;
  font-size: 1.7rem;
}

.feature-card:hover,
.feature-card:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: #737373;
}

.feature-card.tall {
  min-height: 260px;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: clamp(1rem, 2.4vw, 1.6rem);
  border-radius: 0.3rem;
  box-shadow: var(--shadow);
}

.card h2 {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  letter-spacing: 0.03em;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border: none;
  border-radius: 999px;
  padding: 0.7rem 1.2rem;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
}

.page-title h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 0.3rem;
}

.category-layout {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 1.5rem;
}

.category-left {
  display: grid;
  gap: 1.5rem;
}

.category-right {
  border-left: 4px dotted #333333;
  padding-left: 1.5rem;
}

.themes-title {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 1rem;
  text-decoration: underline;
}

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

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

.radio-grid .feature-card {
  min-height: 300px;
}

.skills {
  display: grid;
  gap: 0.9rem;
}

.skill-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-weight: 700;
}

.skill-bar {
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  background: #dbdbdb;
}

.skill-fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #518685, #99bebd);
  transition: width 850ms cubic-bezier(0.2, 0.9, 0.3, 1);
}

.catalog-hero {
  background: var(--hero-color, #0a6a3e);
  color: #ffffff;
  border-radius: 0.4rem;
  padding: clamp(1rem, 2vw, 1.3rem);
  box-shadow: var(--shadow);
}

.catalog-hero h1 {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2rem, 6vw, 4.5rem);
  letter-spacing: 0.04em;
  margin-bottom: 0.2rem;
}

.catalog-top {
  display: grid;
  grid-template-columns: minmax(260px, 360px) minmax(0, 1fr);
  gap: 1.2rem;
  align-items: stretch;
}

.preview-box,
.skills-box {
  background: rgba(24, 24, 24, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 0.25rem;
  color: #f6f6f6;
  padding: 1rem;
}

.preview-box h2,
.skills-box h2 {
  font-size: 1.15rem;
  margin-bottom: 0.55rem;
}

.catalog-btns {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.8rem;
}

.catalog-btn {
  border-radius: 999px;
  text-decoration: none;
  text-align: center;
  font-weight: 700;
  padding: 0.7rem 1rem;
}

.catalog-btn.primary {
  background: var(--accent);
  color: #ffffff;
}

.catalog-btn.ghost {
  background: #d3d3d7;
  color: #272727;
}

.skills-box ul {
  padding-left: 1rem;
  margin: 0;
  display: grid;
  gap: 0.45rem;
}

.catalog-list {
  display: grid;
  gap: 0.85rem;
  margin-top: 0.8rem;
}

.catalog-item {
  border: 1px solid #d1d1d1;
  border-left: 6px solid #5a8f8e;
  border-radius: 0.2rem;
  background: #fdfdfd;
  padding: 0.9rem;
}

.catalog-item h3 {
  margin-bottom: 0.4rem;
}

.catalog-item a {
  font-weight: 700;
}

video,
audio {
  width: 100%;
}

video {
  border-radius: 0.25rem;
  border: 1px solid #4e4e4e;
  background: #000;
}

form {
  display: grid;
  gap: 0.85rem;
}

.form-grid {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  border: 1px solid #bebebe;
  border-radius: 0.25rem;
  padding: 0.65rem 0.75rem;
  font: inherit;
}

input:focus,
textarea:focus {
  outline: 2px solid #7eb2b1;
  border-color: #5f9695;
}

.hidden-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
}

#form-status {
  min-height: 1.2em;
  font-weight: 700;
  margin: 0;
}

#form-status.success {
  color: #0e6e3d;
}

#form-status.error {
  color: #9b1f1f;
}

.site-footer {
  border-top: 1px solid var(--line);
  text-align: center;
  padding: 1rem;
  background: #f1f1f1;
}

.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 560ms ease, transform 560ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .site-header {
    flex-wrap: wrap;
    justify-content: center;
  }

  .main-nav {
    margin-left: 0;
    justify-content: center;
  }

  .contact-btn {
    width: fit-content;
  }

  .home-grid,
  .radio-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 150px;
  }
}

@media (max-width: 900px) {
  .category-layout,
  .catalog-top,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .category-right {
    border-left: none;
    border-top: 4px dotted #333333;
    padding-left: 0;
    padding-top: 1.2rem;
  }

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