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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #f4f5f7;
  color: #1e293b;
  line-height: 1.5;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  background: #ffffff;
  padding: 20px 0;
  border-bottom: 1px solid #e2e8f0;
  margin-bottom: 30px;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: #0f172a;
  text-decoration: none;
}

.hero {
  margin-bottom: 24px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.tool-card {
  background: #ffffff;
  padding: 24px;
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid #f1f5f9;
}

.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
}

.tool-card .icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.tool-card h3 {
  margin-bottom: 8px;
  color: #0f172a;
}

.tool-card p {
  font-size: 14px;
  color: #64748b;
}

.ad-banner {
  background: #e2e8f0;
  border: 2px dashed #cbd5e1;
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  color: #64748b;
  font-size: 14px;
  margin-top: 20px;
}

.footer {
  margin-top: 50px;
  padding: 20px 0;
  text-align: center;
  color: #94a3b8;
  font-size: 14px;
}

/* Стили для страницы инструмента */
.tool-container {
  background: #ffffff;
  padding: 30px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  align-items: flex-start;
}

.tool-form {
  flex: 1;
  min-width: 280px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: #334155;
}

.form-group input, .form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus, .form-group select:focus {
  border-color: #2563eb;
}

.btn {
  background: #2563eb;
  color: #ffffff;
  border: none;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  text-decoration: none;
  display: inline-block;
}

.btn:hover {
  background: #1d4ed8;
}

.btn-secondary {
  background: #10b981;
  margin-top: 15px;
}

.btn-secondary:hover {
  background: #059669;
}

.tool-result {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: #f8fafc;
  border-radius: 12px;
  min-width: 240px;
}

#qrcode img {
  border-radius: 8px;
}

.tool-page {
  background: #ffffff;
  padding: 30px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.password-box {
  display: flex;
  gap: 10px;
  align-items: center;
}

.password-box input {
  font-family: monospace;
  font-size: 18px;
  font-weight: bold;
  letter-spacing: 1px;
  background-color: #f9fafb;
}

.seo-text h2 {
  font-size: 20px;
  margin-bottom: 10px;
  color: #1f2937;
}

.seo-text h3 {
  font-size: 16px;
  margin-top: 15px;
  margin-bottom: 8px;
  color: #374151;
}