:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --paper: #ffffff;
  --ink: #132235;
  --muted: #5b6b7d;
  --line: #d8e1ea;
  --blue: #145fa7;
  --blue-dark: #0d3f72;
  --orange: #f39a22;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, sans-serif;
  line-height: 1.45;
}

a {
  color: inherit;
}

.wrap,
.shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

header {
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--line);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.logo img {
  height: 54px;
  display: block;
}

nav {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 15px;
}

nav a {
  text-decoration: none;
}

nav a:hover {
  color: var(--blue-dark);
}

.shell {
  padding: 54px 0 62px;
}

.intro {
  max-width: 760px;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 1.15;
}

h1 {
  font-size: 44px;
}

h2 {
  font-size: 25px;
}

.intro p:not(.eyebrow),
.muted {
  color: var(--muted);
}

.intro p:not(.eyebrow) {
  margin: 14px 0 0;
  font-size: 19px;
}

.intro-actions {
  margin-top: 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 18px 50px rgba(19, 34, 53, .08);
}

.panel p {
  margin: 10px 0 18px;
}

form {
  display: grid;
  gap: 14px;
}

label span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 14px;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

input[type="file"] {
  padding: 10px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0 18px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  background: var(--blue);
  color: #fff;
}

.button.primary:hover {
  background: var(--blue-dark);
}

.button.secondary {
  margin-top: 16px;
  border-color: #bfd0e2;
  background: #fff;
  color: var(--blue-dark);
}

.download-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  color: inherit;
  text-decoration: none;
}

.download-row small {
  display: block;
  color: var(--muted);
}

.result {
  max-width: 720px;
}

footer {
  border-top: 1px solid var(--line);
  padding: 24px 20px;
  color: var(--muted);
  text-align: center;
}

.admin-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 18px;
}

.code-box {
  border: 1px solid #b8d5f0;
  border-radius: var(--radius);
  padding: 14px;
  background: #eef6ff;
}

.code-box strong {
  display: block;
  margin-top: 8px;
  font-size: 20px;
}

.admin-list {
  display: grid;
  gap: 10px;
}

.admin-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
}

.inline-actions {
  display: flex;
  gap: 8px;
}

.inline-actions button {
  min-height: 36px;
}

@media (max-width: 780px) {
  .grid,
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .wrap,
  .shell {
    width: calc(100% - 32px);
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  h1 {
    font-size: 36px;
  }
}