/* ============================================
   BerryChat - ベリーちゃんテーマ（紫〜ピンク系）
   ============================================ */

:root {
    --color-primary:       #a855f7;     /* メイン紫 */
    --color-primary-dark:  #7e22ce;
    --color-primary-light: #e9d5ff;
    --color-accent:        #ec4899;     /* アクセントピンク */
    --color-accent-light:  #fce7f3;
    --color-bg:            #faf5ff;     /* 薄紫背景 */
    --color-bg-white:      #ffffff;
    --color-text:          #1f2937;
    --color-text-sub:      #6b7280;
    --color-border:        #e5e7eb;
    --color-success:       #10b981;
    --color-error:         #ef4444;
    --gradient-primary:    linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
    --gradient-soft:       linear-gradient(135deg, #faf5ff 0%, #fce7f3 100%);
    --shadow-sm:           0 1px 2px rgba(168, 85, 247, 0.08);
    --shadow-md:           0 4px 12px rgba(168, 85, 247, 0.12);
    --shadow-lg:           0 10px 30px rgba(168, 85, 247, 0.18);
    --radius-sm:           8px;
    --radius-md:           16px;
    --radius-lg:           24px;
    --radius-full:         9999px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
    color: var(--color-text);
    background: var(--gradient-soft);
    min-height: 100vh;
    -webkit-text-size-adjust: 100%;
}

.app {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    background: var(--color-bg);
    box-shadow: var(--shadow-lg);
    position: relative;
}

/* Push通知許可バナー */
.push-banner {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    padding-top: calc(10px + env(safe-area-inset-top, 0px));
    background: var(--gradient-primary);
    color: #fff;
    font-size: 13px;
}

.push-banner-text {
    flex: 1;
}

.push-banner-btn {
    background: #fff;
    color: var(--color-primary);
    border: none;
    border-radius: var(--radius-full);
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.push-banner-close {
    background: none;
    border: none;
    color: rgba(255,255,255,0.8);
    font-size: 20px;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}

/* ============================================
   ヘッダー
   ============================================ */
.app-header {
    background: var(--gradient-primary);
    color: #fff;
    padding: 16px 20px;
    padding-top: calc(6px + env(safe-area-inset-top, 0px));
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 10;
}

.app-header h1 {
    font-size: 18px;
    margin: 0;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.app-header .logo {
    font-size: 22px;
    margin-right: 8px;
}

/* ============================================
   ページタイトル（サブページ用）
   ============================================ */
.page-title {
    background: var(--gradient-primary);
    color: #fff;
    padding: 20px;
    padding-top: calc(8px + env(safe-area-inset-top, 0px));
    text-align: center;
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.page-title h1 {
    margin: 0 0 4px;
    font-size: 22px;
    font-weight: 700;
}

.page-title p {
    margin: 0;
    font-size: 13px;
    opacity: 0.92;
}

/* ============================================
   カード（フォームなど）
   ============================================ */
.card {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 24px;
    margin: 20px;
    box-shadow: var(--shadow-md);
}

.card h2 {
    margin: 0 0 16px;
    font-size: 16px;
    color: var(--color-primary-dark);
}

/* ============================================
   フォーム
   ============================================ */
.form-group { margin-bottom: 16px; }

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-sub);
    margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group .help {
    font-size: 12px;
    color: var(--color-text-sub);
    margin-top: 4px;
}

/* ============================================
   ボタン
   ============================================ */
.btn {
    display: inline-block;
    padding: 12px 20px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
    background: #fff;
    color: var(--color-primary-dark);
    border: 1.5px solid var(--color-primary-light);
}

.btn-secondary:hover { background: var(--color-primary-light); }

.btn-block { display: block; width: 100%; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ============================================
   アラート
   ============================================ */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-info {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    border: 1px solid var(--color-primary-light);
}

/* ============================================
   リンク
   ============================================ */
a { color: var(--color-primary-dark); }

.link-center {
    text-align: center;
    margin-top: 16px;
    font-size: 14px;
}

/* ============================================
   管理画面
   ============================================ */
.admin-nav {
    display: flex;
    gap: 8px;
    padding: 12px 20px;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    overflow-x: auto;
}

.admin-nav a {
    padding: 8px 16px;
    border-radius: var(--radius-full);
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
}

.admin-nav a.active {
    background: var(--gradient-primary);
    color: #fff;
}

.invite-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.invite-item {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    margin-bottom: 8px;
}

.invite-item.used { opacity: 0.6; }

.invite-url {
    font-size: 12px;
    color: var(--color-text-sub);
    background: var(--color-bg);
    padding: 8px;
    border-radius: 6px;
    word-break: break-all;
    margin-top: 8px;
    font-family: monospace;
}

.invite-meta {
    font-size: 12px;
    color: var(--color-text-sub);
    margin-top: 6px;
    display: flex;
    gap: 12px;
}

/* ============================================
   ボタンサイズ・バリエーション
   ============================================ */
.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

.btn-xs {
    padding: 4px 12px;
    font-size: 12px;
}

.btn-danger {
    color: var(--color-error);
    border-color: #fecaca;
}

/* ============================================
   ステータスバッジ
   ============================================ */
.status-badge {
    font-size: 12px;
    margin-left: 6px;
}

.status-badge--used    { color: var(--color-success); }
.status-badge--expired { color: var(--color-error); }
.status-badge--active  { color: var(--color-primary-dark); }

/* ============================================
   ヘッダー内フォーム（ログアウトボタンなど）
   ============================================ */
.header-form {
    margin: 0;
}

/* ============================================
   テキスト装飾
   ============================================ */
.text-muted {
    color: var(--color-text-sub);
    font-size: 14px;
}

/* ============================================
   ユーティリティ
   ============================================ */
.text-center { text-align: center; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-0  { margin-bottom: 0; }
.mb-16 { margin-bottom: 16px; }
.hidden { display: none !important; }

/* ============================================
   ベリーちゃんロゴ（プレースホルダー絵文字）
   ============================================ */
.berry-logo {
    font-size: 48px;
    text-align: center;
    margin-bottom: 12px;
}

/* ============================================
   ボトムナビゲーション
   ============================================ */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    display: flex;
    background: #fff;
    border-top: 1px solid var(--color-border);
    z-index: 100;
    padding-bottom: env(safe-area-inset-bottom, 0);
}

.bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 0 8px;
    text-decoration: none;
    color: var(--color-text-sub);
    font-size: 10px;
    transition: color 0.15s;
}

.bottom-nav-item.active {
    color: var(--color-primary);
}

.bottom-nav-icon {
    font-size: 22px;
    line-height: 1;
    margin-bottom: 2px;
}

.bottom-nav-label {
    font-weight: 600;
}

/* ボトムナビの高さぶんコンテンツに余白（セーフエリア込み） */
.has-bottom-nav {
    padding-bottom: calc(70px + env(safe-area-inset-bottom, 0px));
}

/* ============================================
   トーク一覧
   ============================================ */
.room-list {
    padding: 0;
}

.room-item {
    display: flex;
    align-items: center;
    padding: 14px 20px;
    text-decoration: none;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
    transition: background 0.15s;
}

.room-item:active {
    background: var(--color-primary-light);
}

.room-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    margin-right: 14px;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.room-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.room-avatar-default {
    font-size: 24px;
}

.room-info {
    flex: 1;
    min-width: 0;
}

.room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.room-name {
    font-weight: 600;
    font-size: 15px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.room-time {
    font-size: 12px;
    color: var(--color-text-sub);
    flex-shrink: 0;
    margin-left: 8px;
}

.room-last {
    font-size: 13px;
    color: var(--color-text-sub);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: flex;
    align-items: center;
}

.room-badge {
    background: var(--color-accent);
    color: #fff;
    border-radius: var(--radius-full);
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 700;
    margin-left: auto;
    flex-shrink: 0;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--color-text-sub);
}

.empty-state p { margin: 4px 0; }

/* ============================================
   トークルーム
   ============================================ */
.room-header-bar {
    background: var(--gradient-primary);
    color: #fff;
    padding: 14px 16px;
    padding-top: calc(6px + env(safe-area-inset-top, 0px));
    display: flex;
    align-items: center;
    gap: 12px;
    position: sticky;
    top: 0;
    z-index: 10;
}

.room-header-bar .back-btn {
    color: #fff;
    text-decoration: none;
    font-size: 20px;
    line-height: 1;
    padding: 4px;
}

.room-header-bar .room-title {
    font-size: 16px;
    font-weight: 700;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* メッセージエリア */
.msg-area {
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 16px 16px calc(72px + env(safe-area-inset-bottom, 0px));
    background: var(--color-bg);
    height: calc(100vh - 52px - env(safe-area-inset-top, 0px));
    height: calc(100dvh - 52px - env(safe-area-inset-top, 0px));
}

/* メッセージ共通 */
.msg {
    margin-bottom: 12px;
    max-width: 80%;
}

.msg-mine {
    margin-left: auto;
    text-align: right;
}

.msg-other {
    margin-right: auto;
    text-align: left;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.msg-name {
    font-size: 12px;
    color: var(--color-text-sub);
    margin-bottom: 2px;
    padding-left: 4px;
}

.msg-bubble {
    display: inline-block;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 15px;
    line-height: 1.5;
    word-break: break-word;
    text-align: left;
}

.msg-mine .msg-bubble {
    background: var(--gradient-primary);
    color: #fff;
    border-bottom-right-radius: 4px;
}

.msg-other .msg-bubble {
    background: #fff;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-bottom-left-radius: 4px;
}

.msg-bubble a {
    color: inherit;
    text-decoration: underline;
}

.msg-deleted {
    background: transparent !important;
    color: var(--color-text-sub) !important;
    border: 1px dashed var(--color-border) !important;
    font-size: 13px;
    border-radius: var(--radius-sm) !important;
}

.msg-stamp img {
    width: 120px;
    height: 120px;
    object-fit: contain;
}

.msg-meta {
    font-size: 11px;
    color: var(--color-text-sub);
    margin-top: 2px;
    padding: 0 4px;
}

.msg-read {
    color: var(--color-primary);
    font-weight: 600;
}

/* 入力エリア */
.msg-input-area {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    background: #fff;
    border-top: 1px solid var(--color-border);
    padding: 10px 12px;
    padding-bottom: calc(10px + env(safe-area-inset-bottom, 0));
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 100;
}

.msg-input-area input[type="text"] {
    flex: 1;
    padding: 10px 14px;
    font-size: 15px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-bg);
    font-family: inherit;
}

.msg-input-area input[type="text"]:focus {
    outline: none;
    border-color: var(--color-primary);
}

.msg-send-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.msg-send-btn:disabled {
    opacity: 0.4;
}

/* ============================================
   友だちページ
   ============================================ */
.friend-section {
    padding: 0 20px;
    margin-bottom: 16px;
}

.friend-section h3 {
    font-size: 13px;
    color: var(--color-text-sub);
    margin: 16px 0 8px;
    font-weight: 600;
}

.friend-item {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}

.friend-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    margin-right: 12px;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.friend-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.friend-info {
    flex: 1;
    min-width: 0;
}

.friend-name {
    font-weight: 600;
    font-size: 15px;
}

.friend-id {
    font-size: 12px;
    color: var(--color-text-sub);
}

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

/* 検索バー */
.search-bar {
    padding: 12px 20px;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
}

.search-bar input {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-bg);
    font-family: inherit;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.search-results {
    padding: 0 20px;
}

/* ============================================
   プロフィールページ
   ============================================ */
.profile-header {
    text-align: center;
    padding: 24px 20px;
    background: var(--gradient-primary);
    color: #fff;
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 12px;
    background: rgba(255,255,255,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-name {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.profile-id {
    font-size: 14px;
    opacity: 0.9;
}

/* QRコードセクション */
.qr-section {
    text-align: center;
}

.qr-code {
    display: inline-block;
    padding: 12px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin-bottom: 12px;
}

.qr-code img {
    display: block;
}

.qr-help {
    font-size: 13px;
    color: var(--color-text-sub);
    margin: 0 0 16px;
}

.qr-id-box {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
}

.qr-id-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-sub);
}

.qr-id-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
}

/* 友だち追加プロフィール（QR経由） */
.add-friend-profile {
    text-align: center;
    padding: 40px 20px 30px;
}

.add-friend-avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    margin: 0 auto 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.add-friend-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.add-friend-name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}

.add-friend-id {
    font-size: 14px;
    color: var(--color-text-sub);
    margin-bottom: 8px;
}

.add-friend-bio {
    font-size: 14px;
    color: var(--color-text-sub);
    margin-bottom: 24px;
}

.add-friend-action {
    max-width: 280px;
    margin: 0 auto;
}

.add-friend-status {
    font-size: 14px;
    color: var(--color-text-sub);
    margin-bottom: 12px;
}

.header-back {
    font-size: 20px;
    text-decoration: none;
    color: #fff;
    margin-right: 8px;
}

/* ============================================
   タブ
   ============================================ */
.tabs {
    display: flex;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
}

.tab {
    flex: 1;
    padding: 12px;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-sub);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: inherit;
}

.tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* ============================================
   入力エリア ツールボタン（スタンプ・画像）
   ============================================ */
.msg-tool-btn {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: none;
    font-size: 20px;
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: background 0.15s;
}

.msg-tool-btn:hover { background: var(--color-primary-light); }

/* ============================================
   スタンプピッカー
   ============================================ */
.stamp-picker {
    position: fixed;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    height: 280px;
    background: #fff;
    border-top: 1px solid var(--color-border);
    z-index: 99;
    display: flex;
    flex-direction: column;
    padding-bottom: env(safe-area-inset-bottom, 0);
}

/* グループタブバー */
.stamp-tabs {
    display: flex;
    overflow-x: auto;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.stamp-tabs::-webkit-scrollbar { display: none; }

.stamp-tab {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border: none;
    background: none;
    cursor: pointer;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 2px solid transparent;
    transition: background 0.15s;
}

.stamp-tab.active {
    border-bottom-color: var(--color-primary);
    background: var(--color-primary-light);
}

.stamp-tab:hover { background: var(--color-primary-light); }

.stamp-tab img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 4px;
}

.stamp-tab span {
    font-size: 10px;
    font-weight: 600;
    color: var(--color-text-sub);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 40px;
}

.stamp-tab.active span { color: var(--color-primary-dark); }

/* 閉じるボタン */
.stamp-close-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    border: none;
    background: rgba(0, 0, 0, 0.06);
    font-size: 14px;
    color: var(--color-text-sub);
    cursor: pointer;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    z-index: 1;
    line-height: 1.4;
}

.stamp-close-btn:hover { background: rgba(0, 0, 0, 0.1); }

/* スタンプ一覧 */
.stamp-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-content: flex-start;
}

.stamp-item {
    width: 72px;
    height: 72px;
    border: none;
    border-radius: var(--radius-sm);
    background: none;
    cursor: pointer;
    padding: 4px;
    transition: background 0.15s;
}

.stamp-item:hover { background: var(--color-primary-light); }

.stamp-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ============================================
   画像メッセージ
   ============================================ */
.msg-image {
    display: inline-block;
    max-width: 240px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.msg-image img {
    width: 100%;
    display: block;
    cursor: pointer;
}

/* 画像プレビュー（送信前確認） */
.image-preview {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-preview-inner {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 16px;
    max-width: 360px;
    width: 90%;
    text-align: center;
}

.image-preview-inner img {
    max-width: 100%;
    max-height: 300px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.image-preview-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* 画像ビューアー（タップ拡大） */
.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.image-viewer img {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
}

/* ============================================
   管理画面：スタンプグリッド
   ============================================ */
/* 一括アップロードプレビュー */
.bulk-preview {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}

.bulk-preview-item {
    border-radius: var(--radius-sm);
    overflow: hidden;
    aspect-ratio: 1;
}

.bulk-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.bulk-count {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.stamp-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.stamp-admin-item {
    text-align: center;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    position: relative;
}

.stamp-admin-item img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 8px;
}

.stamp-admin-name {
    font-size: 12px;
    color: var(--color-text-sub);
    margin-bottom: 8px;
}

.stamp-admin-actions {
    display: flex;
    gap: 4px;
    justify-content: center;
}

.stamp-inactive {
    opacity: 0.4;
}

/* ============================================
   管理画面：スタンプグループヘッダー
   ============================================ */
.stamp-group-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.stamp-group-header h2 {
    margin: 0;
    flex: 1;
}

.stamp-group-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
}

.stamp-group-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ============================================
   フォームセレクト
   ============================================ */
.form-select {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* ============================================
   管理画面：ファイルインプット
   ============================================ */
.form-group input[type="file"] {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
    font-family: inherit;
}

.form-group input[type="number"] {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input[type="number"]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* ============================================
   管理画面：並び順リスト
   ============================================ */
.sort-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sort-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.sort-item-icon {
    width: 32px;
    height: 32px;
    border-radius: 4px;
    overflow: hidden;
    flex-shrink: 0;
}

.sort-item-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.sort-item-name {
    flex: 1;
    font-size: 14px;
    font-weight: 600;
}

/* グループ名編集用テキスト入力 */
.sort-name-input {
    flex: 1;
    padding: 6px 10px;
    font-size: 14px;
    font-weight: 600;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
    font-family: inherit;
    min-width: 0;
}

.sort-name-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.sort-input {
    width: 64px;
    padding: 6px 8px;
    font-size: 14px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
    text-align: center;
    font-family: inherit;
}

.sort-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* スタンプ個別の名前・並び順入力 */
.stamp-admin-edit {
    display: flex;
    gap: 4px;
    justify-content: center;
    align-items: center;
    margin-bottom: 6px;
}

.edit-name-input {
    width: 100%;
    min-width: 0;
    padding: 4px 6px;
    font-size: 12px;
    border: 1.5px solid var(--color-border);
    border-radius: 6px;
    background: #fff;
    font-family: inherit;
    text-align: center;
}

.edit-name-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.sort-input-sm {
    width: 56px;
    padding: 4px 6px;
    font-size: 12px;
    border: 1.5px solid var(--color-border);
    border-radius: 6px;
    background: #fff;
    text-align: center;
    font-family: inherit;
}

.sort-input-sm:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

/* ============================================
   管理画面：PC向けレスポンシブ
   ============================================ */
.app-admin {
    max-width: 480px;
}

@media (min-width: 768px) {
    .app-admin {
        max-width: 900px;
    }

    .app-admin .card {
        padding: 28px 32px;
    }

    /* スタンプグリッドを4列に */
    .app-admin .stamp-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }

    /* フォームを横並びに */
    .app-admin .form-group {
        max-width: 500px;
    }

    /* 並び順リスト横幅制限 */
    .app-admin .sort-list {
        max-width: 600px;
    }

    /* ボタン幅制限 */
    .app-admin .btn-block {
        max-width: 400px;
    }
}

@media (min-width: 1024px) {
    .app-admin {
        max-width: 1100px;
    }

    /* スタンプグリッドを5列に */
    .app-admin .stamp-grid {
        grid-template-columns: repeat(5, 1fr);
    }

    /* 管理画面の2カラムレイアウト用 */
    .app-admin .admin-two-col {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0;
    }

    .app-admin .admin-two-col > .card {
        margin: 20px 10px;
    }
}

/* ============================================
   ヘッダーアクション（トーク一覧）
   ============================================ */
.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    text-decoration: none;
    font-size: 18px;
    transition: background 0.15s;
}

.header-icon-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ============================================
   グループ：ルームヘッダー
   ============================================ */
.room-title-link {
    text-decoration: none;
    color: #fff;
}

.room-member-count {
    font-size: 13px;
    font-weight: 400;
    opacity: 0.85;
}

/* ============================================
   グループ作成：メンバー選択
   ============================================ */
.member-select-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.member-select-item {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s;
    gap: 12px;
}

.member-select-item:hover {
    background: var(--color-primary-light);
}

.member-select-item .member-checkbox {
    display: none;
}

.member-check-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: transparent;
    flex-shrink: 0;
    transition: all 0.15s;
    margin-left: auto;
}

.member-select-item .member-checkbox:checked ~ .member-check-icon {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* ============================================
   グループ設定：プロフィールヘッダー
   ============================================ */
.group-profile-header {
    text-align: center;
    padding: 24px 20px 20px;
    background: var(--gradient-primary);
    color: #fff;
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
    margin-bottom: 20px;
    position: relative;
}

.group-profile-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 8px;
    background: rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
}

.group-profile-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.group-icon-change-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    font-size: 16px;
    margin-bottom: 8px;
    transition: background 0.15s;
}

.group-icon-change-btn:hover {
    background: rgba(255, 255, 255, 0.4);
}

.group-profile-name {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.group-profile-count {
    font-size: 14px;
    opacity: 0.9;
}

/* ============================================
   一括削除バー（管理画面）
   ============================================ */
.bulk-del-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
}

.bulk-select-all {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--color-text-sub);
    cursor: pointer;
}

.bulk-check {
    position: absolute;
    top: 4px;
    left: 4px;
    z-index: 1;
    cursor: pointer;
}

.bulk-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

/* ============================================
   LINE風スタンププレビュー
   ============================================ */
.stamp-preview {
    position: fixed;
    bottom: 340px;
    left: 50%;
    transform: translateX(-50%);
    max-width: 480px;
    width: 100%;
    z-index: 100;
}

.stamp-preview-bg {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 40px 20px 20px;
    background: rgba(255, 255, 255, 0.85);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    cursor: pointer;
    min-height: 160px;
}

.stamp-preview-bg:active .stamp-preview-img {
    transform: scale(0.93);
}

.stamp-preview-img {
    max-width: 180px;
    max-height: 150px;
    object-fit: contain;
    transition: transform 0.1s;
}

.stamp-preview-close {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.15);
    color: var(--color-text-sub);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

/* ============================================
   トグルスイッチ（通知設定）
   ============================================ */
.toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    cursor: pointer;
}

.toggle-label {
    font-size: 15px;
    font-weight: 600;
}

.toggle-input {
    display: none;
}

.toggle-switch {
    position: relative;
    width: 48px;
    height: 28px;
    background: var(--color-border);
    border-radius: 14px;
    transition: background 0.2s;
    flex-shrink: 0;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 22px;
    height: 22px;
    background: #fff;
    border-radius: 50%;
    transition: transform 0.2s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.toggle-input:checked + .toggle-switch {
    background: var(--color-primary);
}

.toggle-input:checked + .toggle-switch::after {
    transform: translateX(20px);
}

/* ============================================
   PINロック画面
   ============================================ */
.pin-lock-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    padding: 40px 20px;
    text-align: center;
}

.pin-lock-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.pin-lock-screen h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--color-text);
}

.pin-input-group {
    margin-bottom: 16px;
}

.pin-input-field {
    width: 160px;
    padding: 12px;
    font-size: 24px;
    text-align: center;
    letter-spacing: 12px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-white);
    font-family: inherit;
    -webkit-text-security: disc;
}

.pin-input-field:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.pin-dots {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 24px;
}

.pin-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
    background: transparent;
    transition: background 0.15s, border-color 0.15s;
}

.pin-dot.filled {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.pin-lock-screen .btn {
    width: 160px;
}

.pin-lock-screen .alert {
    margin-bottom: 16px;
    padding: 8px 16px;
    font-size: 13px;
}

.text-success {
    color: var(--color-success);
    font-size: 14px;
    margin-bottom: 16px;
}

/* ============================================
   日付区切り線
   ============================================ */
.date-separator {
    text-align: center;
    padding: 12px 0;
    position: relative;
}

.date-separator::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 16px;
    right: 16px;
    height: 1px;
    background: var(--color-border);
}

.date-separator span {
    position: relative;
    background: var(--color-bg);
    padding: 0 12px;
    font-size: 12px;
    color: var(--color-text-sub);
    font-weight: 500;
}

/* ============================================
   入力中インジケーター
   ============================================ */
.typing-indicator {
    position: fixed;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    max-width: 480px;
    width: 100%;
    padding: 4px 16px;
    font-size: 12px;
    color: var(--color-text-sub);
    background: var(--color-bg);
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 10;
}

.typing-dots {
    display: flex;
    gap: 3px;
    align-items: center;
}

.typing-dots span {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--color-text-sub);
    animation: typing-bounce 1.2s infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-bounce {
    0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
    30% { opacity: 1; transform: translateY(-3px); }
}

/* ============================================
   メッセージアバター
   ============================================ */
.msg-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    cursor: pointer;
}

.msg-avatar-default {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary-light);
    font-size: 18px;
    flex-shrink: 0;
}

.msg-content-wrap {
    min-width: 0;
    max-width: calc(100% - 44px);
}

.msg-mine .msg-content-wrap {
    max-width: 100%;
}

/* ============================================
   長押しコンテキストメニュー
   ============================================ */
.msg-context-menu {
    position: fixed;
    z-index: 200;
    background: var(--color-bg-white);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    min-width: 120px;
}

.msg-context-menu button {
    display: block;
    width: 100%;
    padding: 12px 20px;
    border: none;
    background: none;
    font-size: 14px;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    color: var(--color-text);
}

.msg-context-menu button:active {
    background: var(--color-primary-light);
}

.msg-context-menu .context-danger {
    color: var(--color-error);
}

/* ============================================
   ユーザー管理（管理画面）
   ============================================ */
.user-manage-header {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.badge-admin {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 10px;
}

.user-manage-info {
    font-size: 13px;
    color: var(--color-text-sub);
    margin-bottom: 12px;
}

.user-manage-info p {
    margin: 2px 0;
}

.user-manage-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.inline-form {
    margin: 0;
}

.form-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.form-input-sm {
    flex: 1;
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 14px;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
    white-space: nowrap;
}