/* メール秘書 PWA スタイル
   落ち着いた秘書らしい配色: 濃紺 × クリーム × 抑えた金 */

:root {
  --color-bg: #f4f1ea;
  --color-surface: #ffffff;
  --color-surface-alt: #eceadf;
  --color-primary: #1f3350;
  --color-primary-dark: #142236;
  --color-accent: #a5824f;
  --color-text: #262420;
  --color-text-muted: #6b6a63;
  --color-border: #ded9c9;
  --color-danger: #a5432f;
  --color-success: #3f6b53;
  --color-unread: #a5432f;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  overscroll-behavior-y: contain;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: 16px; /* iOS自動ズーム防止のため16px以上を厳守 */
}

/* ---------- 共通部品 ---------- */

.text-input {
  display: block;
  width: 100%;
  padding: 10px 12px;
  margin: 6px 0 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  color: var(--color-text);
}
.text-input:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}
.textarea { resize: vertical; min-height: 4.5em; }
.textarea-large { min-height: 10em; }

.field-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-top: 10px;
}
.field-hint {
  font-size: 13px;
  color: var(--color-text-muted);
  margin: -8px 0 14px;
}
.field-error {
  color: var(--color-danger);
  font-size: 14px;
  margin: -6px 0 12px;
}
.field-success {
  color: var(--color-success);
  font-size: 14px;
  margin: -6px 0 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.btn:disabled { opacity: 0.55; cursor: default; }
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:active:not(:disabled) { background: var(--color-primary-dark); }
.btn-outline {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-border);
}
.btn-outline:active:not(:disabled) { background: var(--color-surface-alt); }
.btn-text {
  background: transparent;
  color: var(--color-text-muted);
}
.btn-block { width: 100%; }
.btn-compact { min-height: 40px; padding: 8px 12px; font-size: 14px; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }

.text-btn {
  background: none;
  border: none;
  color: var(--color-primary);
  font-weight: 600;
  min-height: 44px;
  padding: 0 8px;
  cursor: pointer;
}

.icon-btn {
  min-width: 44px;
  min-height: 44px;
  border: none;
  background: transparent;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
}
.toggle-label input { width: 20px; height: 20px; }

.loading-row {
  padding: 24px 16px;
  text-align: center;
  color: var(--color-text-muted);
}
.empty-state {
  padding: 32px 16px;
  text-align: center;
  color: var(--color-text-muted);
}

.section-title {
  font-size: 16px;
  color: var(--color-primary);
  margin: 20px 0 8px;
  padding: 0 16px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(20px + var(--safe-bottom));
  transform: translateX(-50%);
  background: var(--color-primary-dark);
  color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 14px;
  max-width: 90vw;
  z-index: 100;
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
}

/* ---------- ログイン ---------- */

.login-wrap {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(24px, var(--safe-top)) max(20px, var(--safe-right)) max(24px, var(--safe-bottom)) max(20px, var(--safe-left));
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}
.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--color-surface);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}
.login-title {
  margin: 0;
  font-size: 22px;
  color: var(--color-primary);
  text-align: center;
}
.login-sub {
  margin: 4px 0 20px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
}

/* ---------- ヘッダー ---------- */

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: calc(10px + var(--safe-top)) max(12px, var(--safe-right)) 10px max(12px, var(--safe-left));
  background: var(--color-primary);
  color: #fff;
}
.header-title {
  flex: 1;
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  text-align: center;
}
.header-actions { display: flex; }

#app-main {
  padding-bottom: calc(24px + var(--safe-bottom));
  max-width: 720px;
  margin: 0 auto;
}

/* ---------- 受信箱 ---------- */

.tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px max(16px, var(--safe-right)) 4px max(16px, var(--safe-left));
  -webkit-overflow-scrolling: touch;
}
.tab {
  flex: 0 0 auto;
  min-height: 40px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
}
.tab-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.inbox-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px max(16px, var(--safe-right)) 4px max(16px, var(--safe-left));
}

.thread-list {
  display: flex;
  flex-direction: column;
  padding: 8px max(12px, var(--safe-right)) 0 max(12px, var(--safe-left));
  gap: 10px;
}
.thread-item {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 14px;
  cursor: pointer;
}
.thread-item-main { flex: 1; min-width: 0; }
.thread-item-actions { flex: 0 0 auto; }
.thread-account-label {
  display: inline-block;
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: 2px;
}
.thread-subject-row { display: flex; align-items: center; gap: 6px; }
.thread-subject-text {
  font-weight: 700;
  font-size: 15px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.thread-meta {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 2px;
}
.thread-from { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.thread-date { flex: 0 0 auto; }
.thread-snippet {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--color-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.thread-badges { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
}
.badge-unread { background: var(--color-unread); color: #fff; }
.badge-muted { background: var(--color-surface-alt); color: var(--color-text-muted); }

/* ---------- スレッド詳細 ---------- */

.thread-subject {
  font-size: 17px;
  padding: 16px max(16px, var(--safe-right)) 4px max(16px, var(--safe-left));
  margin: 0;
}

.thread-messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 8px max(14px, var(--safe-right)) 8px max(14px, var(--safe-left));
}
.message-bubble {
  max-width: 88%;
  padding: 10px 14px;
  border-radius: 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}
.message-other { align-self: flex-start; border-top-left-radius: 4px; }
.message-mine {
  align-self: flex-end;
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  border-top-right-radius: 4px;
}
.message-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
  opacity: 0.75;
  margin-bottom: 4px;
}
.message-body {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14px;
}

.thread-actions {
  display: flex;
  gap: 10px;
  padding: 12px max(16px, var(--safe-right)) 4px max(16px, var(--safe-left));
  flex-wrap: wrap;
}

.draft-panel {
  margin: 12px max(16px, var(--safe-right)) 0 max(16px, var(--safe-left));
  padding: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
}
.draft-done {
  text-align: center;
  padding: 12px 0;
}
.draft-done-message {
  color: var(--color-success);
  font-weight: 600;
}

/* ---------- 設定 ---------- */

.account-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px max(16px, var(--safe-right)) 8px max(16px, var(--safe-left));
}
.account-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 12px 14px;
}
.account-item-main { flex: 1; min-width: 0; }
.account-item-label { font-weight: 700; }
.account-item-email { font-size: 13px; color: var(--color-text-muted); }
.account-item-note { font-size: 13px; color: var(--color-accent); margin-top: 2px; }

#settings-add-form {
  padding: 4px max(16px, var(--safe-right)) 8px max(16px, var(--safe-left));
}

.token-row {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  flex-wrap: wrap;
}
.token-row .text-input { flex: 1 1 160px; margin-bottom: 6px; }
.token-row .btn { margin-top: 6px; }

.settings-footer {
  margin: 20px max(16px, var(--safe-right)) max(16px, var(--safe-bottom)) max(16px, var(--safe-left));
  padding: 14px;
  background: var(--color-surface-alt);
  border-radius: 10px;
  font-size: 12.5px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

@media (min-width: 560px) {
  .login-card { padding: 36px 32px; }
}