* {
  box-sizing: border-box;
}

:root {
  --blue-50: #f2f6ff;
  --blue-100: #e5eeff;
  --blue-300: #97b6ff;
  --blue-500: #3b6fdd;
  --blue-600: #2d5cc3;
  --ink-900: #162234;
  --ink-700: #3a4f67;
  --ink-500: #6c7f96;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--ink-900);
  background: #eff3fa;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 520px;
  margin: 0 auto;
  padding: 24px 18px 48px;
}

.admin-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 26px 18px 48px;
}

.card {
  background: #fff;
  border: 1px solid #dde5f2;
  border-radius: 18px;
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: 0 10px 25px rgba(28, 53, 89, 0.08);
}

.profile {
  text-align: center;
  margin-bottom: 18px;
}

.avatar {
  width: 98px;
  height: 98px;
  border-radius: 999px;
  object-fit: cover;
  border: 3px solid #fff;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.title {
  margin: 10px 0 6px;
  font-size: 28px;
  font-weight: 900;
}

.subtitle {
  margin: 0;
  opacity: 0.85;
}

.link-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.link-btn {
  display: block;
  border-radius: 12px;
  border: 2px solid rgba(0, 0, 0, 0.15);
  padding: 14px 16px;
  font-weight: 700;
  text-align: center;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.link-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.13);
}

.muted {
  color: var(--ink-500);
  font-size: 14px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}

.nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.nav a,
.btn {
  border: 1px solid #cfdbef;
  border-radius: 12px;
  padding: 9px 13px;
  background: #fff;
  display: inline-block;
  font-weight: 600;
}

.btn-primary {
  border-color: var(--blue-500);
  background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
  color: #fff;
}

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

.table th,
.table td {
  border-bottom: 1px solid #ececec;
  padding: 10px 8px;
  text-align: left;
  font-size: 14px;
  vertical-align: top;
}

input,
textarea {
  width: 100%;
  border: 1px solid #d5e0f0;
  border-radius: 12px;
  padding: 10px;
  font: inherit;
  background: #fdfefe;
}

label {
  font-weight: 700;
  margin-bottom: 6px;
  display: block;
}

.field {
  margin-bottom: 12px;
}

.grid-2 {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
}

.danger {
  color: #b00020;
}

.success {
  color: #0a7a0a;
}

.auth-page {
  min-height: 100vh;
  background:
    radial-gradient(circle at 10% 20%, rgba(61, 120, 224, 0.16), transparent 42%),
    radial-gradient(circle at 90% 85%, rgba(61, 120, 224, 0.14), transparent 40%),
    linear-gradient(180deg, #ecf3ff 0%, #dbe7fb 100%);
}

.auth-page .container {
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.auth-page .card {
  width: 100%;
  border-radius: 22px;
  padding: 24px;
}

.auth-page h2 {
  margin-top: 0;
  font-size: 28px;
  color: #17345c;
}

.admin-page {
  background: linear-gradient(180deg, #eef4ff 0%, #e5eefc 100%);
}

.admin-page .card h3 {
  margin-top: 0;
  color: #17345c;
}

.admin-page .table input {
  margin-bottom: 6px;
}

@media (max-width: 640px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .admin-wrap {
    padding: 18px 14px 34px;
  }
}