/* --- Headers --- */
        .header {
            padding: 16px 20px;
            position: sticky;
            top: 0;
            background: var(--bg-color);
            z-index: 20;
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .header h1 {
            margin: 0;
            font-size: 20px;
            font-weight: 700;
            flex: 1;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            letter-spacing: -0.01em;
        }

        /* Fix #1: Touch Target ≥ 44px */
        .back-btn {
            background: none;
            border: none;
            color: var(--primary);
            font-size: var(--text-base);
            font-weight: 600;
            margin-right: 8px;
            padding: 10px 4px;
            /* расширена зона нажатия */
            min-height: 44px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .back-btn svg {
            width: 20px;
            height: 20px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        /* Fix #1: Touch Target 36px → 44px */
        .icon-btn {
            background: var(--bg-sec);
            border: 1px solid var(--glass-border);
            color: var(--text-color);
            width: 44px;
            height: 44px;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
        }

        .icon-btn:active {
            background: var(--glass-bg);
            transform: scale(0.95);
        }

        /* --- Content & Cards --- */
        .content {
            padding: 16px 20px;
            flex: 1;
        }

        .empty-state {
            text-align: center;
            padding: 50px 20px;
            color: var(--hint-color);
        }

        .empty-state .icon {
            font-size: 52px;
            margin-bottom: 16px;
            display: inline-block;
            animation: floatEmoji 3s ease-in-out infinite;
        }

        @keyframes floatEmoji {

            0%,
            100% {
                transform: translateY(0);
            }

            50% {
                transform: translateY(-6px);
            }
        }

        .empty-state h2 {
            font-size: 19px;
            font-weight: 700;
            margin: 0 0 8px 0;
            color: var(--text-color);
        }

        .empty-state p {
            font-size: 14px;
            margin: 0;
            line-height: 1.5;
        }

        /* ================================================
           ГРУППОВАЯ КАРТОЧКА (Двухстрочный Ultra-Compact Glass ~82px)
           ================================================ */
        .group-card {
            background: var(--card-bg, #1e293b);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 14px;
            padding: 10px 12px;
            margin-bottom: 8px;
            box-shadow: var(--glass-shadow);
            border: 1px solid var(--glass-border);
            cursor: pointer;
            transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            gap: 8px;
            color: var(--text-color);
        }

        .group-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
            pointer-events: none;
        }

        .group-card:active {
            transform: scale(0.985);
            border-color: rgba(56, 189, 248, 0.3);
        }

        /* Карточка взаиморасчетов / сведения долга */
        .settle-card {
            background: var(--card-bg, #1e293b);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 13px;
            padding: 10px 12px;
            margin-bottom: 8px;
            box-shadow: 0 4px 12px -2px rgba(0, 0, 0, 0.25);
            border: 1px solid var(--glass-border);
            cursor: pointer;
            display: flex;
            flex-direction: column;
            gap: 6px;
            transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
            position: relative;
            overflow: hidden;
            color: var(--text-color);
        }

        .settle-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
            pointer-events: none;
        }

        .settle-card:active {
            transform: scale(0.985);
            background-color: var(--glass-bg);
            border-color: rgba(56, 189, 248, 0.3);
        }

        /* Карточка расхода внутри события */
        .expense-card {
            background: var(--card-bg, #1e293b);
            border-radius: 13px;
            padding: 8px 12px;
            margin-bottom: 6px;
            box-shadow: 0 4px 12px -2px rgba(0, 0, 0, 0.25);
            border: 1px solid var(--glass-border);
            cursor: pointer;
            display: flex;
            flex-direction: row;
            align-items: center;
            justify-content: flex-start;
            gap: 0;
            transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
            position: relative;
            overflow: hidden;
            color: var(--text-color);
            -webkit-tap-highlight-color: transparent;
        }

        .expense-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
            pointer-events: none;
        }

        .expense-card:active {
            transform: scale(0.985);
            background-color: var(--glass-bg);
            border-color: rgba(56, 189, 248, 0.3);
        }

        .expense-card.refund-card {
            border-left: 3px solid var(--primary);
        }

        .expense-card.refund-card.refund-incoming {
            border-left: 3px solid var(--success);
        }

        /* Строка 1: Иконка + Заголовок/Дата слева, Баланс + Меню справа */
        .group-card-row1 {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
        }

        .group-card-left {
            display: flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
            flex: 1;
        }

        .group-card-icon {
            width: 36px;
            height: 36px;
            border-radius: 11px;
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.15) 0%, rgba(99, 102, 241, 0.15) 100%);
            border: 1px solid rgba(56, 189, 248, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(56, 189, 248, 0.1);
        }

        .group-card-info {
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .group-card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-color);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            line-height: 1.25;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .group-card-sub {
            font-size: 11.5px;
            color: var(--hint-color);
            margin-top: 2px;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .group-card-right {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }

        /* Капсула баланса */
        .group-card-pill {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 9px;
            border-radius: 9px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .group-card-pill.positive {
            background: var(--success-bg);
            color: var(--success);
            border: 1px solid rgba(16, 185, 129, 0.25);
            box-shadow: 0 0 14px -4px rgba(16, 185, 129, 0.3);
        }

        .group-card-pill.negative {
            background: var(--danger-bg);
            color: var(--danger);
            border: 1px solid rgba(244, 63, 94, 0.25);
            box-shadow: 0 0 14px -4px rgba(244, 63, 94, 0.3);
        }

        .group-card-pill.settled {
            background: rgba(148, 163, 184, 0.1);
            color: var(--hint-color);
            border: 1px solid rgba(148, 163, 184, 0.2);
        }

        .group-card-pill.neutral {
            background: rgba(56, 189, 248, 0.12);
            color: var(--primary);
            border: 1px solid rgba(56, 189, 248, 0.25);
        }

        .group-card-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: currentColor;
        }

        /* Кнопка троеточия */
        .group-card-dots {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(148, 163, 184, 0.1);
            border: 1px solid var(--glass-border);
            color: var(--hint-color);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.15s ease;
            flex-shrink: 0;
        }

        .group-card-dots:hover {
            background: var(--bg-sec);
            color: var(--text-color);
            border-color: rgba(56, 189, 248, 0.3);
        }

        /* Строка 2: Аватары участников + Общий оборот */
        .group-card-row2 {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 8px;
            border-top: 1px solid var(--glass-border);
            font-size: 11.5px;
        }

        .group-card-avatars {
            display: flex;
            align-items: center;
        }

        .group-card-avatar {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--bg-sec);
            border: 2px solid var(--bg-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 9px;
            font-weight: 700;
            color: #ffffff;
            margin-left: -6px;
            flex-shrink: 0;
        }

        .group-card-avatar:first-child {
            margin-left: 0;
        }

        .group-card-avatar.more {
            background: rgba(56, 189, 248, 0.2);
            color: var(--primary);
            font-size: 8.5px;
        }

        .group-card-participants-count {
            font-size: 11.5px;
            color: var(--hint-color);
            margin-left: 0;
            font-weight: 500;
        }

        .group-card-turnover {
            font-size: 11.5px;
            color: var(--hint-color);
            font-weight: 600;
            white-space: nowrap;
        }

        .group-card-turnover b {
            color: var(--text-color);
            font-weight: 700;
        }

        .group-card-status-tag {
            font-size: 10px;
            font-weight: 700;
            padding: 1px 5px;
            border-radius: 5px;
            display: inline-flex;
            align-items: center;
        }

        .group-card-status-tag.locked {
            color: var(--danger);
            background: var(--danger-bg);
        }

        .group-card-status-tag.archived {
            color: var(--hint-color);
            background: rgba(148, 163, 184, 0.12);
            border: 1px solid var(--glass-border);
        }

        /* Сохраняем старые классы для обратной совместимости */
        .group-card-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 10px;
        }

        .group-card h3 {
            margin: 0;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .group-status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            font-size: var(--text-xs);
            font-weight: 600;
            margin: 8px 0 12px 0;
        }

        .group-status-badge.positive {
            background: var(--success-bg);
            color: var(--success);
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        .group-status-badge.negative {
            background: var(--danger-bg);
            color: var(--danger);
            border: 1px solid rgba(244, 63, 94, 0.2);
        }

        .group-status-badge.settled {
            background: rgba(148, 163, 184, 0.12);
            color: var(--hint-color);
            border: 1px solid rgba(148, 163, 184, 0.2);
        }

        .group-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--hint-color);
            margin-top: 6px;
        }

        .group-badge {
            background: rgba(56, 189, 248, 0.15);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: var(--radius-full);
            font-size: var(--text-xs);
            font-weight: 700;
            border: 1px solid rgba(56, 189, 248, 0.25);
        }

        /* --- Forms & Inputs --- */
        /* Fix #6: Сетка 8px + Fix #5: шкала */
        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: var(--text-sm);
            color: var(--hint-color);
            font-weight: 600;
        }

        .input-field {
            width: 100%;
            background: var(--bg-sec);
            border: 1px solid var(--glass-border);
            color: var(--text-color);
            padding: 14px 16px;
            border-radius: var(--radius-md);
            font-size: var(--text-base);
            /* Fix #5: 15.5px → 15px */
            outline: none;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            font-family: inherit;
        }

        .input-field:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
        }

        .input-field::placeholder {
            color: rgba(148, 163, 184, 0.6);
        }

        /* --- Tabs & Segmented Controls --- */
        .tabs-header {
            display: flex;
            background: var(--bg-sec);
            border-radius: var(--radius-md);
            padding: 4px;
            margin-bottom: 18px;
            border: 1px solid var(--glass-border);
        }

        .tab-btn {
            flex: 1;
            background: none;
            border: none;
            color: var(--hint-color);
            padding: 10px 14px;
            min-height: 44px;
            /* Fix #1: Touch Target */
            font-size: var(--text-sm);
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.2s ease;
            text-align: center;
        }

        .tab-btn.active {
            background: var(--bg-color);
            color: var(--text-color);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }

        /* --- Bottom Action & Buttons (iOS Fluid Motion) --- */
        .bottom-action {
            position: fixed;
            bottom: calc(18px + var(--safe-bottom));
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 40px);
            max-width: 440px;
            z-index: 30;
            pointer-events: auto;
            -webkit-backface-visibility: hidden;
            backface-visibility: hidden;
        }

        .screen:not(.active) .bottom-action {
            display: none !important;
        }

        .main-button {
            width: 100%;
            background: var(--primary-gradient);
            color: var(--primary-text);
            border: none;
            padding: 16px;
            font-size: 16px;
            font-weight: 700;
            border-radius: var(--radius-md);
            box-shadow: 0 8px 24px -4px rgba(2, 132, 199, 0.38), 0 2px 6px -1px rgba(0, 0, 0, 0.12);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.22s ease, filter 0.22s ease;
            -webkit-tap-highlight-color: transparent;
            user-select: none;
            -webkit-user-select: none;
        }

        .main-button:active {
            transform: scale3d(0.965, 0.965, 1);
            box-shadow: 0 3px 10px rgba(2, 132, 199, 0.25);
            filter: brightness(0.95);
        }

        .btn-primary {
            background: var(--primary);
            color: var(--primary-text);
            border: none;
            padding: 12px 18px;
            min-height: 44px;
            /* Fix #1: Touch Target */
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: var(--text-base);
            /* Fix #5: 14.5px → 15px */
            cursor: pointer;
            transition: transform 0.15s ease;
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .main-button:disabled,
        .btn-primary:disabled {
            opacity: 0.55 !important;
            cursor: not-allowed !important;
            pointer-events: none !important;
            box-shadow: none !important;
            transform: none !important;
            filter: grayscale(0.25) !important;
        }

        /* --- Bottom Sheets & Modals --- */
        .bottom-sheet-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            z-index: 100;
            display: flex;
            align-items: flex-end;
            justify-content: center;
            animation: fadeInOverlay 0.2s ease-out;
        }

        @keyframes fadeInOverlay {
            from {
                opacity: 0;
            }

            to {
                opacity: 1;
            }
        }

        .bottom-sheet-content {
            background: var(--bg-sec);
            width: 100%;
            max-width: 480px;
            border-radius: 24px 24px 0 0;
            border-top: 1px solid var(--glass-border);
            padding-bottom: calc(20px + var(--safe-bottom));
            max-height: 85vh;
            display: flex;
            flex-direction: column;
            animation: sheetSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            position: relative;
            box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.4);
            /* Fix #9: плавная прокрутка на iOS */
            overscroll-behavior: contain;
        }

        @keyframes sheetSlideUp {
            from {
                transform: translateY(100%);
            }

            to {
                transform: translateY(0);
            }
        }

        /* Fix #1: расширенная зона нажатия для handle-bar через padding */
        .sheet-handle-bar {
            width: 40px;
            height: 5px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-full);
            margin: 8px auto 2px auto;
            padding: 12px 40px;
            box-sizing: content-box;
            cursor: grab;
            background-clip: content-box;
        }

        /* Фикс свайпа шторки в TMA — оверлей перехватывает события касания */
        .bottom-sheet-overlay {
            touch-action: none;   /* запрещаем свайп через overlay */
        }
        .bottom-sheet-content {
            touch-action: pan-y;  /* внутри контента вертикальный скролл разрешён */
        }

        .sheet-header {
            padding: 14px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--glass-border);
        }

        .sheet-header h3 {
            margin: 0;
            font-size: 17px;
            font-weight: 700;
        }

        /* --- Stepper, Chips & Elements --- */
        .stepper {
            display: flex;
            align-items: center;
            background: var(--bg-color);
            border-radius: var(--radius-sm);
            border: 1px solid var(--glass-border);
            overflow: hidden;
        }

        /* Fix #1: Touch Target 32px → 44px */
        .stepper button {
            background: none;
            border: none;
            color: var(--primary);
            font-size: 17px;
            font-weight: 700;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        .stepper button:active {
            background: var(--glass-bg);
        }

        .stepper span {
            min-width: 26px;
            text-align: center;
            font-weight: 700;
            font-size: var(--text-sm);
        }

        .select-all-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
            padding: 9px 14px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
            user-select: none;
            -webkit-user-select: none;
        }

        .select-all-bar:active {
            transform: scale(0.985);
            background: rgba(255, 255, 255, 0.08);
        }

        .participant-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: var(--bg-sec);
            padding: 8px 12px;
            border-radius: 12px;
            font-size: 14.5px;
            border: 1px solid var(--glass-border);
            margin-bottom: 6px;
        }

        /* Fix #1: Touch Target 30px → 44px */
        .btn-remove {
            background: var(--danger-bg);
            color: var(--danger);
            border: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-full);
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            flex-shrink: 0;
            transition: background 0.15s ease;
        }

        .btn-remove:active {
            background: rgba(244, 63, 94, 0.25);
            transform: scale(0.95);
        }

        /* Fix #6: Сетка 8px */
        .section-title {
            font-size: var(--text-sm);
            font-weight: 700;
            color: var(--hint-color);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin: 16px 0 8px 0;
        }

        /* --- Floating Select Menu (Pop Animation) --- */
        #floating-select-menu {
            display: none;
            position: fixed;
            z-index: 999;
            background: var(--bg-sec);
            border-radius: 16px;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
            border: 1px solid var(--glass-border);
            padding: 6px 0;
            min-width: 190px;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            animation: floatingMenuPop 0.18s cubic-bezier(0.16, 1, 0.3, 1) forwards;
        }

        @keyframes floatingMenuPop {
            0% {
                opacity: 0;
                transform: scale(0.85) translateY(-6px);
            }

            100% {
                opacity: 1;
                transform: scale(1) translateY(0);
            }
        }

        .floating-menu-item {
            padding: 12px 18px;
            font-size: 14.5px;
            font-weight: 600;
            color: var(--text-color);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background 0.12s ease;
        }

        .floating-menu-item:active {
            background: var(--glass-bg);
        }

        .floating-menu-item.danger {
            color: var(--danger);
        }

        /* --- Group Title Row & Icon Picker Button --- */
        .group-title-input-row {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .group-title-input-row .input-field {
            flex: 1;
            min-width: 0;
        }

        .group-icon-picker-btn {
            background: var(--bg-sec);
            border: 1px solid var(--glass-border);
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            cursor: pointer;
            flex-shrink: 0;
            transition: transform 0.15s ease, border-color 0.2s ease, box-shadow 0.2s ease;
            user-select: none;
            -webkit-user-select: none;
            box-sizing: border-box;
            box-shadow: var(--glass-shadow);
        }

        .group-icon-picker-btn:hover {
            border-color: var(--primary);
            transform: scale(1.04);
        }

        .group-icon-picker-btn:active {
            transform: scale(0.95);
        }

        .group-icon-picker-btn.manual {
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.18);
        }

        /* --- Participant Input & Tags --- */
        .participant-input-row {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .participant-input-row .input-field {
            flex: 1;
            min-width: 0;
        }

        .participant-add-btn {
            background: var(--primary);
            color: var(--primary-text);
            border: none;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            transition: transform 0.15s ease, opacity 0.15s ease;
            white-space: nowrap;
            flex-shrink: 0;
            user-select: none;
            -webkit-user-select: none;
        }

        .participant-add-btn:active {
            transform: scale(0.96);
            opacity: 0.9;
        }

        .bound-tag {
            font-size: var(--text-xs);
            /* Fix #5: 11.5px → 11px */
            font-weight: 700;
            padding: 3px 8px;
            border-radius: var(--radius-full);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .bound-tag.me {
            background: rgba(56, 189, 248, 0.15);
            color: var(--primary);
            border: 1px solid rgba(56, 189, 248, 0.3);
        }

        .bound-tag.tg {
            background: var(--success-bg);
            color: var(--success);
            border: 1px solid rgba(16, 185, 129, 0.3);
        }

        .bound-tag.wait {
            background: rgba(148, 163, 184, 0.12);
            color: var(--hint-color);
            border: 1px solid rgba(148, 163, 184, 0.2);
        }

        .btn-unbind {
            background: rgba(244, 63, 94, 0.12);
            color: var(--danger);
            border: 1px solid rgba(244, 63, 94, 0.25);
            border-radius: var(--radius-full);
            padding: 2px 7px;
            font-size: 10px;
            font-weight: 700;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 2px;
            transition: all 0.2s;
        }

        .btn-unbind:active {
            transform: scale(0.95);
            background: rgba(244, 63, 94, 0.25);
        }

        /* --- Known Contacts Collapsible & Chips --- */
        .contacts-chips-container {
            margin-top: 12px;
            margin-bottom: 4px;
        }

        .contacts-toggle-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--bg-sec);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 9px 14px;
            cursor: pointer;
            user-select: none;
            -webkit-user-select: none;
            transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .contacts-toggle-bar:active {
            transform: scale(0.985);
            background: var(--glass-bg);
        }

        .contacts-count-badge {
            background: rgba(56, 189, 248, 0.15);
            color: var(--primary);
            font-size: 11.5px;
            font-weight: 700;
            padding: 2px 7px;
            border-radius: var(--radius-full);
            border: 1px solid rgba(56, 189, 248, 0.25);
        }

        .contacts-chips-list {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            padding: 4px 2px;
            animation: fadeInOverlay 0.2s ease-out;
        }

        .contact-chip {
            background: var(--bg-sec);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-full);
            padding: 5px 10px 5px 8px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12.5px;
            font-weight: 600;
            color: var(--text-color);
            cursor: pointer;
            transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
            user-select: none;
            -webkit-user-select: none;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
            font-family: inherit;
        }

        .contact-chip:hover,
        .contact-chip:active {
            background: var(--glass-bg);
            border-color: var(--primary);
            transform: scale(0.97);
        }

        .contact-chip .chip-avatar {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(56, 189, 248, 0.15);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
        }

        .contact-chip .chip-username {
            font-size: 11px;
            color: var(--hint-color);
            font-weight: 500;
        }

        .contact-chip .chip-plus {
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            margin-left: 2px;
        }

        .participant-suggestions-box {
            position: absolute;
            top: calc(100% + 4px);
            left: 0;
            right: 0;
            background: var(--bg-sec);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            z-index: 50;
            max-height: 180px;
            overflow-y: auto;
            overflow-x: hidden;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            animation: fadeInOverlay 0.15s ease-out;
        }

        .suggestion-item {
            padding: 9px 12px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: background 0.15s ease;
        }

        .suggestion-item:last-child {
            border-bottom: none;
        }

        .suggestion-item:active,
        .suggestion-item:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .suggestion-item-main {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .suggestion-name {
            font-weight: 600;
            font-size: 13.5px;
            color: var(--text-color);
        }

        .suggestion-badge {
            font-size: 11px;
            color: var(--success);
            background: var(--success-bg);
            border: 1px solid rgba(16, 185, 129, 0.25);
            padding: 2px 6px;
            border-radius: var(--radius-full);
            font-weight: 600;
        }