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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 16px;
}

h1 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: #1a1a2e;
  border-left: 4px solid #4a6fa5;
  padding-left: 12px;
}

h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: #555;
}

/* Form */
.form-section {
  background: #fff;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.form-row {
  margin-bottom: 12px;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: #555;
}

.required {
  color: #e74c3c;
}

input[type="text"],
input[type="tel"],
input[type="email"],
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 0.95rem;
  transition: border-color 0.2s;
  background: #fafafa;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: #4a6fa5;
  background: #fff;
}

textarea {
  resize: vertical;
  font-family: inherit;
}

.btn-primary {
  width: 100%;
  padding: 12px;
  background: #4a6fa5;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 4px;
  transition: background 0.2s;
}

.btn-primary:hover {
  background: #3a5a8a;
}

/* Search */
.search-section {
  margin-bottom: 12px;
}

.search-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 0.95rem;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.search-input:focus {
  outline: none;
  border-color: #4a6fa5;
}

/* Count */
.count-label {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 10px;
}

/* Card list */
.card-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card-item {
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  position: relative;
}

.card-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 4px;
}

.card-company {
  font-size: 0.9rem;
  color: #4a6fa5;
  font-weight: 600;
  margin-bottom: 2px;
}

.card-position {
  font-size: 0.85rem;
  color: #777;
  margin-bottom: 8px;
}

.card-details {
  font-size: 0.88rem;
  color: #555;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.card-details span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-details .label {
  color: #999;
  font-size: 0.8rem;
  min-width: 36px;
}

.card-memo {
  margin-top: 8px;
  font-size: 0.85rem;
  color: #777;
  border-top: 1px solid #f0f0f0;
  padding-top: 8px;
  white-space: pre-wrap;
}

.btn-delete {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 0.78rem;
  color: #bbb;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-delete:hover {
  border-color: #e74c3c;
  color: #e74c3c;
}

.empty-msg {
  text-align: center;
  color: #bbb;
  padding: 40px 0;
  font-size: 0.95rem;
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.3rem;
  }
  .form-section {
    padding: 16px;
  }
  .card-item {
    padding: 14px;
  }
}