/* ============================================================
   ストック番長 LIFF版 — style.css
   ============================================================ */

:root {
  --color-primary:      #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-primary-light:#DBEAFE;
  --color-bg:           #F1F5F9;
  --color-white:        #FFFFFF;
  --color-text:         #1E293B;
  --color-text-muted:   #64748B;
  --color-border:       #E2E8F0;

  --color-ok:           #059669;
  --color-ok-bg:        #D1FAE5;
  --color-ok-border:    #6EE7B7;
  --color-ok-text:      #065F46;

  --color-warn:         #D97706;
  --color-warn-bg:      #FEF3C7;
  --color-warn-border:  #FCD34D;
  --color-warn-text:    #92400E;

  --color-alert:        #DC2626;
  --color-alert-bg:     #FEE2E2;
  --color-alert-border: #FCA5A5;
  --color-alert-text:   #991B1B;

  --color-line:         #06C755;
  --color-line-dark:    #05A847;

  --radius:    12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --shadow:    0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);

  --nav-height:    64px;
  --header-height: 56px;
  --safe-bottom:   env(safe-area-inset-bottom, 0px);
}

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

html, body {
  height: 100%;
  font-family: 'Helvetica Neue', 'Hiragino Kaku Gothic ProN', 'BIZ UDPGothic', Arial, sans-serif;
  font-size: 16px;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea, select { font-family: inherit; }
a { color: inherit; text-decoration: none; }

/* ── ローディング画面 ────────────────────────────────────── */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.loading-logo {
  font-size: 64px;
  animation: bounce 1.2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

.loading-app-name {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-text {
  font-size: 13px;
  color: rgba(255,255,255,0.75);
}

/* ── アプリ全体ラッパー ──────────────────────────────────── */
.app-wrapper {
  position: fixed;
  inset: 0;
  bottom: calc(var(--nav-height) + var(--safe-bottom));
  overflow: hidden;
}

/* ── ヘッダー ────────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 0 16px;
  min-height: var(--header-height);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 8px;
}

.app-title   { font-size: 18px; font-weight: 700; letter-spacing: -0.3px; }
.header-title{ font-size: 17px; font-weight: 700; }

.user-display {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 2px;
  padding-bottom: 4px;
}

.btn-back {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 600;
  padding: 8px 0;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ── スクリーン ──────────────────────────────────────────── */
.screen { display: none; flex-direction: column; height: 100%; overflow: hidden; }
.screen.active { display: flex; }

.screen-content {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 16px;
  padding-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ── バッジ ──────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  white-space: nowrap;
  flex-shrink: 0;
}

.badge-today {
  background: var(--color-alert-bg);
  color: var(--color-alert-text);
  animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.7; }
}

/* ── アラートバナー ──────────────────────────────────────── */
.alert-banner {
  background: var(--color-alert);
  color: #fff;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}
.alert-banner.hidden { display: none; }

/* ── 在庫カード ──────────────────────────────────────────── */
.cards-container { display: flex; flex-direction: column; gap: 10px; }

.card {
  border-radius: var(--radius);
  border: 2px solid transparent;
  padding: 14px 16px;
  box-shadow: var(--shadow);
  background: var(--color-white);
}
.card-ok      { background: var(--color-ok-bg);   border-color: var(--color-ok-border); }
.card-warning { background: var(--color-warn-bg);  border-color: var(--color-warn-border); }
.card-alert   { background: var(--color-alert-bg); border-color: var(--color-alert-border); }

.card-header { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.card-emoji  { font-size: 22px; flex-shrink: 0; }
.card-name   { font-size: 15px; font-weight: 700; flex: 1; }

.card-status-badge { font-size: 12px; font-weight: 600; padding: 3px 9px; border-radius: 100px; }
.card-ok      .card-status-badge { background: var(--color-ok);    color: #fff; }
.card-warning .card-status-badge { background: var(--color-warn);   color: #fff; }
.card-alert   .card-status-badge { background: var(--color-alert);  color: #fff; }

.card-body { display: flex; align-items: baseline; justify-content: space-between; }
.card-count { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; }
.card-ok      .card-count { color: var(--color-ok-text); }
.card-warning .card-count { color: var(--color-warn-text); }
.card-alert   .card-count { color: var(--color-alert-text); }

.card-days         { font-size: 13px; color: var(--color-text-muted); }
.card-days strong  { font-size: 16px; font-weight: 700; color: var(--color-text); }

.last-updated { font-size: 12px; color: var(--color-text-muted); text-align: center; }

/* ── ボタン ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  transition: opacity 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(0.97); opacity: 0.85; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  width: 100%;
  box-shadow: 0 4px 12px rgba(37,99,235,0.35);
}
.btn-primary:hover { background: var(--color-primary-dark); }

.btn-secondary {
  background: var(--color-border);
  color: var(--color-text);
}

.btn-large { min-height: 54px; font-size: 16px; margin-top: 8px; }

.btn-line {
  background: var(--color-line);
  color: #fff;
  font-weight: 700;
  flex: 1;
}
.btn-line:hover { background: var(--color-line-dark); }

.line-icon {
  font-size: 11px;
  font-weight: 900;
  background: #fff;
  color: var(--color-line);
  padding: 1px 5px;
  border-radius: 3px;
  letter-spacing: -0.5px;
}

/* ── 在庫更新画面 ────────────────────────────────────────── */
.update-item {
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 16px;
  box-shadow: var(--shadow);
}

.update-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.update-item-name { font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 6px; }

.update-days-display {
  font-size: 13px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--color-bg);
  color: var(--color-text-muted);
  transition: background 0.2s, color 0.2s;
}
.update-days-display.status-ok      { background: var(--color-ok-bg);   color: var(--color-ok-text); }
.update-days-display.status-warning { background: var(--color-warn-bg);  color: var(--color-warn-text); }
.update-days-display.status-alert   { background: var(--color-alert-bg); color: var(--color-alert-text); }

.update-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.update-row:last-child { margin-bottom: 0; }

.update-row-label { font-size: 13px; color: var(--color-text-muted); flex-shrink: 0; min-width: 100px; }

.counter { display: flex; align-items: center; gap: 6px; }

.counter-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 22px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.15s;
}
.counter-btn:active { background: var(--color-primary); color: #fff; }

.counter-input {
  width: 60px;
  height: 44px;
  text-align: center;
  font-size: 20px;
  font-weight: 700;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  -moz-appearance: textfield;
}
.counter-input:focus { outline: none; border-color: var(--color-primary); }
.counter-input::-webkit-outer-spin-button,
.counter-input::-webkit-inner-spin-button { -webkit-appearance: none; }

.counter-unit { font-size: 14px; color: var(--color-text-muted); flex-shrink: 0; min-width: 20px; }

/* ── メモカード ──────────────────────────────────────────── */
.memo-card {
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-primary-light);
  padding: 16px;
  box-shadow: var(--shadow);
}

.memo-label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.memo-textarea {
  width: 100%;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  color: var(--color-text);
  resize: none;
  background: var(--color-bg);
  line-height: 1.6;
}
.memo-textarea:focus { outline: none; border-color: var(--color-primary); background: var(--color-white); }

/* ── 購入履歴画面 ────────────────────────────────────────── */
.weekly-card {
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 16px;
  box-shadow: var(--shadow);
}
.weekly-card h3 { font-size: 14px; font-weight: 600; color: var(--color-text-muted); margin-bottom: 8px; }
.weekly-stat    { font-size: 26px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 10px; }
.progress-bar   { height: 10px; background: var(--color-bg); border-radius: 100px; overflow: hidden; margin-bottom: 8px; }
.progress-fill  { height: 100%; border-radius: 100px; transition: width 0.6s ease; }
.weekly-comment { font-size: 13px; font-weight: 600; }
.weekly-comment.ok { color: var(--color-ok); }
.weekly-comment.ng { color: var(--color-alert); }

.history-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 0;
}
.history-list { display: flex; flex-direction: column; gap: 8px; }

.history-item {
  background: var(--color-white);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.history-item.went-shopping { border-color: var(--color-ok-border); background: var(--color-ok-bg); }
.history-item.no-data       { opacity: 0.5; }

.history-item-header { display: flex; align-items: center; justify-content: space-between; }
.history-date        { font-size: 14px; font-weight: 600; }
.history-shopping-badge {
  font-size: 12px; font-weight: 600;
  background: var(--color-ok); color: #fff;
  padding: 2px 8px; border-radius: 100px;
}
.history-purchased { font-size: 13px; color: var(--color-text-muted); display: flex; flex-wrap: wrap; gap: 6px; }

.history-memo {
  font-size: 13px;
  color: var(--color-text);
  background: var(--color-primary-light);
  border-radius: var(--radius-xs);
  padding: 6px 10px;
  line-height: 1.5;
  word-break: break-all;
}

/* ── 設定画面 ────────────────────────────────────────────── */
.settings-section {
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 16px;
  box-shadow: var(--shadow);
}
.settings-section h3 {
  font-size: 13px; font-weight: 700; color: var(--color-text-muted);
  text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 14px; padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 6px 0;
  gap: 12px;
}
.settings-row + .settings-row { border-top: 1px solid var(--color-border); }

.settings-label {
  font-size: 15px; font-weight: 600;
  display: flex; align-items: center; gap: 6px; flex: 1;
}

.settings-control { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }

.settings-input {
  width: 72px; height: 40px; text-align: center;
  font-size: 16px; font-weight: 700;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg); color: var(--color-text);
  -moz-appearance: textfield;
}
.settings-input:focus { outline: none; border-color: var(--color-primary); background: var(--color-white); }
.settings-input::-webkit-outer-spin-button,
.settings-input::-webkit-inner-spin-button { -webkit-appearance: none; }

.settings-unit { font-size: 13px; color: var(--color-text-muted); white-space: nowrap; }

.day-selector { display: flex; gap: 6px; flex-wrap: wrap; }
.day-btn {
  width: 40px; height: 40px; border-radius: 50%;
  font-size: 14px; font-weight: 700;
  background: var(--color-bg); color: var(--color-text-muted);
  border: 2px solid var(--color-border);
  transition: all 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.day-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.notify-slider  { width: 140px; accent-color: var(--color-primary); cursor: pointer; }
.notify-display { font-size: 17px; font-weight: 700; min-width: 48px; text-align: right; }

.settings-buttons { display: flex; flex-direction: column; gap: 10px; }
.settings-buttons .btn-primary { margin-top: 0; }

.btn-reset {
  min-height: 48px;
  font-size: 14px;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-weight: 600;
  width: 100%;
}

/* ── 品目管理リスト ──────────────────────────────────────── */
.items-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }

.item-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.item-row-emoji { font-size: 24px; flex-shrink: 0; }

.item-row-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.item-row-name   { font-size: 15px; font-weight: 700; }
.item-row-detail { font-size: 12px; color: var(--color-text-muted); }

.item-row-actions { display: flex; gap: 6px; flex-shrink: 0; }

.item-action-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-xs);
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  -webkit-tap-highlight-color: transparent;
  transition: background 0.15s;
}
.item-action-btn:active { background: var(--color-primary-light); }
.item-delete-btn:active { background: var(--color-alert-bg); }

.btn-add-item {
  width: 100%;
  min-height: 44px;
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
  background: transparent;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.15s;
}
.btn-add-item:active { background: var(--color-primary-light); }

.unit-btn-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.unit-btn {
  padding: 6px 12px;
  border: 1.5px solid var(--color-border);
  border-radius: 16px;
  background: var(--color-white);
  color: var(--color-black);
  font-size: 13px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
}
.unit-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
}
.unit-btn:active { opacity: 0.7; }

.btn-emoji-suggest {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1.5px solid var(--color-primary);
  border-radius: 20px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.btn-emoji-suggest:active { opacity: 0.7; }

/* ── LINEアカウント表示 ──────────────────────────────────── */
.line-account-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
}

.line-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.line-avatar-placeholder {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-bg);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.line-display-name { flex: 1; font-size: 15px; font-weight: 600; }

.btn-logout {
  font-size: 13px;
  color: var(--color-text-muted);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-weight: 600;
  flex-shrink: 0;
}

/* ── 品目フォームモーダル ────────────────────────────────── */
.item-form { display: flex; flex-direction: column; gap: 14px; margin-bottom: 20px; }

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row-toggle {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.form-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-muted);
}

.form-required { color: var(--color-alert); margin-left: 2px; }

.form-input {
  width: 100%;
  height: 44px;
  padding: 0 12px;
  font-size: 15px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
}
.form-input:focus { outline: none; border-color: var(--color-primary); background: var(--color-white); }

.form-input-emoji { width: 60px; text-align: center; font-size: 22px; padding: 0 8px; }

.form-input-row { display: flex; align-items: center; gap: 8px; }
.form-input-num { width: 90px; flex-shrink: 0; text-align: center; -moz-appearance: textfield; }
.form-input-num::-webkit-outer-spin-button,
.form-input-num::-webkit-inner-spin-button { -webkit-appearance: none; }

.form-unit-label {
  font-size: 13px;
  color: var(--color-text-muted);
  white-space: nowrap;
  font-weight: 600;
}

/* トグルスイッチ */
.toggle-switch { position: relative; display: inline-block; width: 48px; height: 28px; flex-shrink: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--color-border);
  border-radius: 100px;
  transition: background 0.2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 22px; height: 22px;
  left: 3px; bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.toggle-switch input:checked + .toggle-slider { background: var(--color-primary); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); }

/* ── モーダル ────────────────────────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.modal.hidden { display: none; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(2px);
}

.modal-content {
  position: relative;
  z-index: 1;
  background: var(--color-white);
  border-radius: 20px 20px 0 0;
  padding: 24px 20px calc(24px + var(--safe-bottom));
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  animation: slide-up 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* 品目フォームは縦に長いのでスクロール可能に */
.modal-content-tall {
  max-height: 90vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

@keyframes slide-up {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

.modal-title    { font-size: 20px; font-weight: 800; margin-bottom: 4px; }
.modal-subtitle { font-size: 14px; color: var(--color-text-muted); margin-bottom: 20px; }

.suggestion-items { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }

.suggestion-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
}
.suggestion-row-left   { display: flex; align-items: center; gap: 8px; }
.suggestion-row-emoji  { font-size: 20px; }
.suggestion-row-name   { font-weight: 600; }
.suggestion-row-amount { font-size: 16px; font-weight: 800; text-align: right; }

.suggestion-needed { background: var(--color-alert-bg); border: 1px solid var(--color-alert-border); }
.suggestion-needed .suggestion-row-amount { color: var(--color-alert-text); }
.suggestion-ok     { background: var(--color-ok-bg); border: 1px solid var(--color-ok-border); }
.suggestion-ok     .suggestion-row-amount { color: var(--color-ok-text); }

.suggestion-all-ok {
  background: var(--color-ok-bg);
  border: 1px solid var(--color-ok-border);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ok-text);
}

.modal-buttons { display: flex; gap: 10px; }
.modal-buttons .btn-secondary {
  min-height: 48px;
  font-size: 15px; font-weight: 700;
  padding: 12px 20px;
  background: var(--color-bg);
  color: var(--color-text-muted);
  border-radius: var(--radius);
  flex-shrink: 0;
}

/* ── ボトムナビ ──────────────────────────────────────────── */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: calc(var(--nav-height) + var(--safe-bottom));
  padding-bottom: var(--safe-bottom);
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: stretch;
  z-index: 50;
}

.nav-btn {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 2px;
  color: var(--color-text-muted);
  font-size: 10px; font-weight: 600;
  transition: color 0.15s;
  -webkit-tap-highlight-color: transparent;
  padding: 8px 4px;
}
.nav-btn.active { color: var(--color-primary); }
.nav-icon  { font-size: 22px; line-height: 1; }
.nav-label { line-height: 1; }

/* ── トースト ────────────────────────────────────────────── */
.toast {
  position: fixed;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  background: #1E293B;
  color: #fff;
  padding: 12px 20px;
  border-radius: 100px;
  font-size: 14px; font-weight: 600;
  white-space: nowrap;
  z-index: 200;
  box-shadow: var(--shadow-lg);
  transition: top 0.35s cubic-bezier(0.4,0,0.2,1);
  pointer-events: none;
}
.toast.show  { top: 16px; }
.toast.error { background: var(--color-alert); }

/* ── ユーティリティ ──────────────────────────────────────── */
.hidden       { display: none !important; }
.text-muted   { color: var(--color-text-muted); }
.text-sm      { font-size: 13px; }

/* ── デスクトップ対応 ────────────────────────────────────── */
@media (min-width: 480px) {
  .app-wrapper, .bottom-nav {
    max-width: 480px;
    left: 50%; transform: translateX(-50%);
    right: auto; width: 480px;
  }
  .modal-content { max-width: 480px; }
  .toast { font-size: 15px; }
  .loading-screen .loading-content { max-width: 480px; }
}