:root {
  color-scheme: light dark;
  --bg: #f7f3ed;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-strong: #ffffff;
  --text: #151312;
  --muted: #67615b;
  --line: rgba(21, 19, 18, 0.12);
  --accent: #f05a2a;
  --accent-dark: #a93a17;
  --shadow: 0 18px 48px rgba(36, 26, 20, 0.12);
  --icon-shadow: 0 14px 26px rgba(240, 90, 42, 0.25);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1110;
    --surface: rgba(23, 27, 25, 0.84);
    --surface-strong: #171b19;
    --text: #f4f1ec;
    --muted: #b7afa7;
    --line: rgba(244, 241, 236, 0.14);
    --accent: #ff7045;
    --accent-dark: #ffb347;
    --shadow: 0 18px 48px rgba(0, 0, 0, 0.32);
    --icon-shadow: 0 14px 32px rgba(255, 112, 69, 0.28);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at 12% 8%, rgba(240, 90, 42, 0.14), transparent 34rem),
    radial-gradient(circle at 84% 24%, rgba(255, 179, 71, 0.12), transparent 28rem),
    var(--bg);
}

body {
  margin: 0;
  color: var(--text);
  background: transparent;
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: var(--accent-dark);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.site-shell {
  width: min(100%, 1080px);
  margin: 0 auto;
  padding: 28px 20px 56px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: var(--icon-shadow);
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  flex-wrap: wrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--muted);
  font-size: 0.94rem;
  text-decoration: none;
}

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

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
}

.lang-toggle button {
  min-width: 42px;
  min-height: 34px;
  border: 0;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-size: 0.84rem;
  font-weight: 850;
  letter-spacing: 0;
  cursor: pointer;
}

.lang-toggle button.is-active {
  color: var(--bg);
  background: var(--text);
}

html[data-lang="el"] .lang-en,
html[data-lang="en"] .lang-el {
  display: none !important;
}

.hero {
  display: grid;
  gap: 20px;
  padding: 48px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.lang-label {
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--text);
  line-height: 1.12;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  font-size: clamp(2.35rem, 6.4vw, 4.4rem);
}

h2 {
  margin-top: 38px;
  font-size: clamp(1.55rem, 4vw, 2.2rem);
}

h3 {
  margin-top: 28px;
  font-size: 1.18rem;
}

p {
  margin: 0;
}

.lead {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(1.05rem, 3vw, 1.24rem);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.card {
  display: grid;
  gap: 10px;
  min-height: 170px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  color: var(--text);
  background: var(--surface);
  text-decoration: none;
}

.card strong {
  font-size: 1.1rem;
}

.card span {
  color: var(--muted);
  font-size: 0.94rem;
}

.card em {
  color: var(--muted);
  font-size: 0.9rem;
  font-style: normal;
}

.doc {
  width: min(100%, 860px);
  margin: 0 auto;
  padding: 42px 48px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.doc-header {
  display: grid;
  gap: 14px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.doc h1 {
  font-size: clamp(2.2rem, 8vw, 4rem);
}

.doc p,
.doc li {
  color: var(--muted);
}

.doc ul {
  margin: 12px 0 0;
  padding-left: 22px;
}

.doc section {
  display: grid;
  gap: 12px;
}

.language-section {
  display: grid;
  gap: 22px;
  padding-top: 6px;
}

.language-section + .language-section {
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.language-section > header {
  display: grid;
  gap: 8px;
}

.notice {
  padding: 18px 20px;
  border: 1px solid rgba(240, 90, 42, 0.22);
  border-radius: 18px;
  background: rgba(240, 90, 42, 0.08);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

  .header-actions {
    justify-content: flex-start;
  }

  .hero,
  .doc {
    padding: 28px 24px;
    border-radius: 22px;
  }

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

  .footer {
    flex-direction: column;
  }
}