:root {
  --blue-900: #002f6c;
  --blue-800: #003b7a;
  --blue-700: #0050a4;
  --blue-100: #d8ecff;
  --blue-050: #eef7ff;
  --gray-900: #1b1f24;
  --gray-700: #4c5967;
  --gray-200: #d7dee8;
  --gray-100: #f3f6fa;
  --white: #ffffff;
  --danger: #b42318;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Istok Web", Arial, sans-serif;
  color: var(--gray-900);
  background: var(--gray-100);
  line-height: 1.5;
}

a {
  color: var(--blue-700);
}

.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 54px);
  background: var(--white);
  border-bottom: 4px solid var(--blue-800);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--blue-900);
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 700;
}

nav {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

nav a,
nav button,
.button,
button {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--blue-700);
  background: var(--white);
  color: var(--blue-700);
  padding: 0.625rem 0.75rem;
  border-radius: 0.25rem;
  font: inherit;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.75rem;
  text-decoration: none;
  cursor: pointer;
}

button.primary,
.button.primary {
  background: var(--blue-700);
  border-color: var(--blue-700);
  color: var(--white);
}

button.danger,
.button.danger {
  border-color: var(--danger);
  color: var(--danger);
}

button:hover,
.button:hover,
nav a:hover,
nav button:hover {
  background: var(--blue-050);
}

button.primary:hover,
.button.primary:hover {
  background: var(--blue-800);
  border-color: var(--blue-800);
}

button.danger:hover,
.button.danger:hover {
  background: #fff5f5;
}

button:disabled {
  border-color: var(--gray-200);
  color: var(--gray-700);
  cursor: not-allowed;
  opacity: 0.65;
}

.small {
  padding: 0.45rem 0.65rem;
  font-size: 1rem;
  line-height: 1.35rem;
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 56px;
}

.hero {
  display: grid;
  align-items: center;
  min-height: 430px;
  padding: clamp(28px, 7vw, 70px);
  background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
  color: var(--white);
  border-bottom: 10px solid var(--blue-100);
}

.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.1rem, 4.4vw, 4.6rem);
  line-height: 1.05;
}

.hero p {
  max-width: 680px;
  font-size: 1.2rem;
}

.eyebrow {
  margin: 0 0 14px;
  font-weight: 700;
  color: var(--blue-100);
  text-transform: uppercase;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.content-band,
.panel {
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: clamp(18px, 3vw, 32px);
  margin-top: 24px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-grid article {
  border-left: 6px solid var(--blue-700);
  padding-left: 18px;
}

.narrow {
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.stack {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 6px;
  font-weight: 700;
}

input,
select {
  display: flex;
  align-items: center;
  width: 100%;
  border: 1px solid var(--gray-700);
  border-radius: 0.25rem;
  padding: 0.625rem 0.75rem;
  font: inherit;
  font-size: 1.125rem;
  line-height: 1.75rem;
  background: var(--white);
}

input:focus,
select:focus,
button:focus,
a:focus {
  outline: 4px solid var(--blue-100);
  outline-offset: 2px;
}

.file-picker {
  display: grid;
  grid-template-columns: 120px auto minmax(220px, 1fr);
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: var(--blue-050);
  border: 1px solid var(--blue-700);
  border-radius: 0.25rem;
}

.file-label {
  font-weight: 700;
}

.file-input {
  display: none;
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.file-button {
  min-height: 48px;
  margin: 0;
}

.file-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.file-input:focus + .file-button {
  outline: 4px solid var(--blue-100);
  outline-offset: 2px;
}

.file-status {
  color: var(--gray-700);
  overflow-wrap: anywhere;
}

.upload-submit {
  min-height: 48px;
}

.notice {
  border-left: 6px solid var(--blue-700);
  background: var(--blue-050);
  padding: 12px 14px;
}

.muted {
  color: var(--gray-700);
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  padding: 12px;
  border-bottom: 1px solid var(--gray-200);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--blue-050);
}

.status {
  display: inline-block;
  border: 1px solid var(--blue-800);
  padding: 3px 8px;
  font-weight: 700;
}

.table-actions,
.inline-form {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.admin-create-form {
  display: grid;
  grid-template-columns: minmax(180px, 1.3fr) minmax(180px, 1fr) minmax(140px, 0.7fr) auto;
  gap: 14px;
  align-items: end;
}

.admin-create-submit {
  margin-left: 18px;
}

.qr-cell {
  display: grid;
  grid-template-columns: 64px auto;
  align-items: center;
  gap: 10px;
}

.qr-thumb,
.qr-image {
  display: block;
  background: var(--white);
  border: 1px solid var(--gray-200);
}

.qr-thumb {
  width: 64px;
  height: 64px;
}

.qr-panel {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin: 22px 0;
  padding: 18px;
  background: var(--blue-050);
  border-left: 6px solid var(--blue-700);
}

.qr-image {
  width: 180px;
  height: 180px;
}

.details {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 10px 18px;
}

.details dt {
  font-weight: 700;
}

@media (max-width: 760px) {
  .site-header,
  nav,
  .feature-grid,
  .details,
  .file-picker,
  .admin-create-form,
  .qr-panel {
    display: grid;
    grid-template-columns: 1fr;
  }

  .admin-create-submit {
    margin-left: 0;
  }

  .hero {
    min-height: 360px;
  }
}