* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success-bg: #dcfce7;
  --success-text: #166534;
  --error-bg: #fee2e2;
  --error-text: #991b1b;
  --border: #d1d5db;
  --radius: 0.75rem;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

body {
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 2rem 1rem;
}

.profile-card,
.admin-card {
  max-width: 640px;
  margin: 0 auto;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.profile-card {
  text-align: center;
}

.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1rem;
  border: 3px solid var(--border);
}

.profile-card h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.profile-card .title {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

.bio {
  text-align: left;
  color: var(--text);
  margin: 1.25rem 0;
  white-space: pre-wrap;
}

.contacts {
  list-style: none;
  text-align: left;
  margin: 1.25rem 0;
}

.contacts li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid #f3f4f6;
}

.contacts .label {
  font-weight: 600;
  min-width: 80px;
  color: var(--muted);
  font-size: 0.875rem;
}

.contacts a {
  color: var(--primary);
  text-decoration: none;
}

.contacts a:hover {
  text-decoration: underline;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin: 1.25rem 0;
}

.link-btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: #fff;
  border-radius: 9999px;
  text-decoration: none;
  font-size: 0.95rem;
  transition: background 0.2s;
}

.link-btn:hover {
  background: var(--primary-dark);
}

footer {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid #f3f4f6;
}

.admin-link {
  color: var(--muted);
  font-size: 0.875rem;
  text-decoration: none;
}

.admin-link:hover {
  color: var(--primary);
}

/* Admin */
.admin-card h1 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

label,
fieldset label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-weight: 500;
  font-size: 0.95rem;
}

input,
textarea {
  font: inherit;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: #fff;
  color: var(--text);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

button[type="submit"],
.btn-add {
  padding: 0.7rem 1rem;
  border: none;
  border-radius: 0.5rem;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

button[type="submit"]:hover,
.btn-add:hover {
  background: var(--primary-dark);
}

.btn-remove {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--danger);
  border-radius: 0.5rem;
  background: #fff;
  color: var(--danger);
  cursor: pointer;
}

.btn-remove:hover {
  background: var(--danger);
  color: #fff;
}

.alert {
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
}

.alert.success {
  background: var(--success-bg);
  color: var(--success-text);
}

.alert.error {
  background: var(--error-bg);
  color: var(--error-text);
}

.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.tab {
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.tab.active,
.tab:hover {
  background: #f3f4f6;
  color: var(--text);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.links-editor {
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem;
}

.links-editor legend {
  padding: 0 0.5rem;
  font-weight: 600;
}

.link-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  align-items: center;
}

.link-row input {
  flex: 1;
}

.btn-add {
  display: inline-block;
  margin-top: 0.5rem;
  background: #f3f4f6;
  color: var(--text);
}

.btn-add:hover {
  background: #e5e7eb;
}

@media (max-width: 480px) {
  body {
    padding: 1rem 0.75rem;
  }

  .profile-card,
  .admin-card {
    padding: 1.25rem;
  }

  .link-row {
    flex-direction: column;
    align-items: stretch;
  }

  .link-row input {
    width: 100%;
  }
}