/* リセット */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ルート変数 */
:root {
  --color-primary: #5B8C5A;
  --color-primary-light: #7AA874;
  --color-bg: #FAFAF5;
  --color-bg-card: #FFFFFF;
  --color-text: #333333;
  --color-text-secondary: #666666;
  --color-border: #E0E0D8;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

/* レイアウト */
#app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
}

#header {
  background-color: var(--color-primary);
  color: white;
  padding: 16px;
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

#header h1 {
  font-size: 18px;
  font-weight: 600;
}

#main {
  padding: 16px;
}

section {
  background-color: var(--color-bg-card);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}

/* 画像セクション */
#image-preview-container {
  width: 100%;
  min-height: 200px;
  border: 2px dashed var(--color-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  overflow: hidden;
}

#image-preview {
  max-width: 100%;
  max-height: 300px;
  object-fit: contain;
}

#image-placeholder {
  color: var(--color-text-secondary);
  text-align: center;
}

#image-buttons {
  display: flex;
  gap: 8px;
}

#image-buttons .button {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background-color: var(--color-primary);
  color: white;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  transition: background-color 0.2s;
}

#image-buttons .button:hover {
  background-color: var(--color-primary-light);
}

#image-buttons input[type="file"] {
  display: none;
}

#clear-image-button {
  width: 100%;
  margin-top: 8px;
  padding: 8px;
  background-color: #EEE;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  color: var(--color-text-secondary);
}

/* テキストセクション */
#text-section label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

#text-input {
  width: 100%;
  min-height: 80px;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 16px;
  resize: vertical;
  font-family: inherit;
}

#text-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* 地図セクション */
#location-status {
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

#map {
  width: 100%;
  height: 200px;
  border-radius: 8px;
  overflow: hidden;
}

/* 投稿ボタン */
#submit-button {
  width: 100%;
  padding: 16px;
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

#submit-button:hover {
  background-color: var(--color-primary-light);
}

#submit-button:active {
  transform: scale(0.98);
}

#submit-button:disabled {
  background-color: #CCC;
  cursor: not-allowed;
}

/* 投稿ステータス */
#submit-status {
  text-align: center;
  margin-top: 8px;
  font-size: 14px;
  min-height: 20px;
}

/* 投稿一覧セクション */
#feed-section h2 {
  font-size: 16px;
  margin-bottom: 12px;
  color: var(--color-primary);
}

#feed-status {
  text-align: center;
  color: var(--color-text-secondary);
}

.no-posts {
  text-align: center;
  color: var(--color-text-secondary);
  padding: 24px;
}

.post-card {
  background-color: var(--color-bg);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
}

.post-card:last-child {
  margin-bottom: 0;
}

.post-image {
  width: 100%;
  max-height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 8px;
}

.post-text {
  margin-bottom: 8px;
  white-space: pre-wrap;
  word-break: break-word;
}

.post-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.post-location {
  font-size: 11px;
}