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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #f0f4f8;
  color: #333;
  min-height: 100vh;
}

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

h1 {
  font-size: 1.4rem;
  font-weight: 700;
  color: #1a73e8;
  margin-bottom: 16px;
  text-align: center;
}

/* カード */
.card {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  margin-bottom: 12px;
}

.form-card h2 {
  font-size: 1rem;
  color: #555;
  margin-bottom: 12px;
}

/* フォーム */
.form-group {
  margin-bottom: 10px;
}

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

.required {
  color: #e53935;
}

input[type="text"],
input[type="date"],
select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 0.95rem;
  background: #fafafa;
  outline: none;
  transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="date"]:focus,
select:focus {
  border-color: #1a73e8;
  background: #fff;
}

.form-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

button {
  padding: 9px 18px;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: opacity 0.2s;
}

button:hover {
  opacity: 0.85;
}

#submit-btn {
  background: #1a73e8;
  color: #fff;
  font-weight: 600;
  flex: 1;
}

.btn-secondary {
  background: #eee;
  color: #555;
}

/* フィルター */
.filter-bar {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.filter-btn {
  background: #e8f0fe;
  color: #1a73e8;
  font-size: 0.82rem;
  padding: 5px 12px;
  border-radius: 20px;
}

.filter-btn.active {
  background: #1a73e8;
  color: #fff;
}

/* 連絡先カード */
.contact-card {
  background: #fff;
  border-radius: 12px;
  padding: 14px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
  margin-bottom: 10px;
  border-left: 4px solid #ddd;
  transition: box-shadow 0.2s;
}

.contact-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

.contact-card.warn {
  border-left-color: #ff9800;
}

.contact-card.danger {
  border-left-color: #e53935;
}

.contact-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.contact-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: #222;
}

.contact-relation {
  font-size: 0.78rem;
  background: #e8f0fe;
  color: #1a73e8;
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
}

.contact-days {
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 6px;
}

.days-ok { color: #43a047; }
.days-warn { color: #ff9800; }
.days-danger { color: #e53935; }

.contact-date {
  font-size: 0.82rem;
  color: #888;
  margin-top: 2px;
}

.contact-memo {
  font-size: 0.85rem;
  color: #666;
  margin-top: 6px;
  background: #f5f5f5;
  padding: 4px 8px;
  border-radius: 6px;
}

.contact-actions {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.btn-today {
  background: #e8f5e9;
  color: #2e7d32;
  font-size: 0.82rem;
  padding: 5px 10px;
  border-radius: 6px;
}

.btn-edit {
  background: #e3f2fd;
  color: #1565c0;
  font-size: 0.82rem;
  padding: 5px 10px;
  border-radius: 6px;
}

.btn-delete {
  background: #fce4ec;
  color: #c62828;
  font-size: 0.82rem;
  padding: 5px 10px;
  border-radius: 6px;
}

/* 空メッセージ */
.empty-msg {
  text-align: center;
  color: #aaa;
  margin-top: 40px;
  font-size: 0.95rem;
}

@media (max-width: 480px) {
  h1 { font-size: 1.2rem; }
  .contact-name { font-size: 0.98rem; }
}