* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f7fb;
  color: #1b2230;
}

.page {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 20px;
}

.card {
  background: #fff;
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.search-card,
.login-card,
.result-card {
  max-width: 680px;
  margin: 60px auto;
}

h1 {
  margin: 0 0 16px;
  font-size: 32px;
}

p {
  margin: 0 0 18px;
  color: #5f6777;
}

.search-form,
.admin-form {
  display: grid;
  gap: 14px;
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #d6dcea;
  border-radius: 12px;
}

button,
.button-link {
  display: inline-block;
  padding: 14px 18px;
  border: 0;
  border-radius: 12px;
  background: #0f3d91;
  color: #fff;
  text-decoration: none;
  cursor: pointer;
}

.button-link.secondary {
  background: #8d97a9;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  gap: 16px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 12px;
  border-bottom: 1px solid #e5e9f2;
  text-align: left;
}

.result-grid {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.note-box {
  margin-top: 22px;
  padding: 18px;
  background: #f3f6fb;
  border-radius: 14px;
}

.alert {
  padding: 12px 14px;
  margin-bottom: 16px;
  background: #ffe0e0;
  color: #9f1d1d;
  border-radius: 12px;
}

.back-link {
  display: inline-block;
  margin-bottom: 16px;
  color: #0f3d91;
  text-decoration: none;
}

.form-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 10px;
}

/* COS HEADER */
.cos-header {
  background: #0d1728;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  position: sticky;
  top: 0;
  z-index: 50;
}

.cos-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  padding: 16px 0;
}

.cos-header__logo img {
  height: 48px;
  object-fit: contain;
}

/* центр */
.cos-header__center {
  text-align: center;
}

.cos-header__center h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
}

.cos-header__center span {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
}

/* кнопка */
.cos-btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border-radius: 999px;
  background: #fff;
  color: #0f3d91;
  font-weight: 700;
  font-size: 14px;
  transition: 0.2s;
}

.cos-btn:hover {
  opacity: 0.85;
}

@media (max-width: 600px) {
  .cos-header__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 12px;
  }

  .cos-header__actions {
    justify-content: center;
  }
}