/* ==========================================
   RESPONSIVE & MOBILE STYLES
   ========================================== */

/* Tablet & Small Screens (MD breakpoint: 768px) */
@media (max-width: 991.98px) {
    .container-fluid { 
        padding: 15px; 
    }
    
    h2 { 
        font-size: 1.5rem; 
    }
    
    .card { 
        margin-bottom: 15px; 
    }
    
    .card.sticky-top { 
        position: static !important; 
    }
    
    .nav-tabs { 
        flex-wrap: wrap; 
    }
    
    .table { 
        font-size: 0.85rem; 
    }
    
    thead th { 
        font-size: 0.75rem; 
        padding: 8px 4px !important; 
    }
    
    .table tbody td { 
        padding: 6px 4px !important; 
        font-size: 0.85rem; 
    }
    
    .btn { 
        font-size: 0.9rem; 
        padding: 0.4rem 0.8rem !important; 
    }
    
    .badge { 
        font-size: 0.7rem; 
        padding: 3px 6px !important; 
    }
    
    #btnCompose { 
        font-size: 0.85rem; 
        padding: 0.5rem 1rem !important; 
    }
}

/* Mobile Phones (under 768px) */
@media (max-width: 767.98px) {
    .container-fluid { 
        padding: 10px; 
    }
    
    .d-flex.align-items-center.mb-4 { 
        flex-direction: row !important; 
        align-items: center !important; 
        flex-wrap: nowrap !important; 
    }
    
    img[alt="Logo"] { 
        height: 28px !important; 
        margin-right: 10px !important; 
    }
    
    h2 { 
        font-size: 1.2rem; 
        margin-bottom: 0 !important; 
    }
    
    .row { 
        margin-left: -5px; 
        margin-right: -5px; 
    }
    
    .col-md-4, .col-md-8 { 
        padding: 5px; 
    }
    
    .col-md-4 { 
        max-width: 100%; 
        flex-basis: 100%; 
    }
    
    .col-md-8 { 
        max-width: 100%; 
        flex-basis: 100%; 
    }
    
    .tab-content { 
        height: auto; 
        overflow-y: hidden; 
    }
    
    .card { 
        background-color: #151515; 
        border: 1px solid #222; 
        border-radius: 8px; 
        margin-bottom: 12px; 
    }
    
    #db-panel .card {
        display: flex;
        flex-direction: column;
        height: 100%;
    }
    
    #db-panel .card > * {
        flex-shrink: 0;
    }
    
    #db-panel .card .dataTables_wrapper {
        flex: 1 !important;
        overflow: hidden !important;
        display: flex !important;
        flex-direction: column !important;
        min-height: 0 !important;
    }
    
    #db-panel .card .dataTables_scroll {
        flex: 1 !important;
        height: auto !important;
        overflow-y: auto !important;
        min-height: 0 !important;
    }
    
    .card-header { 
        padding: 12px 14px; 
        font-size: 1.1rem; 
    }
    
    #toggleFilters, 
    #uploadExcelBtn {
        font-size: 0.6rem;
        padding: 0.3rem 0.5rem;
        white-space: nowrap;
        min-width: auto;
        flex-shrink: 1;
    }
    
    .d-flex.flex-column.gap-2 {
        flex-direction: row !important;
        gap: 0.25rem !important;
        align-items: center;
    }
    
    #activeFiltersTags {
        flex-basis: 100%;
        margin-top: 0.25rem;
    }
    
    @media (min-width: 575px) and (max-width: 767.98px) {
        #composeModal .modal-dialog {
            margin-left: auto !important;
            margin-right: auto !important;
        }
    }
    
    textarea { 
        font-size: 18px !important; 
        line-height: 1.5; 
    }
    
    #smsBody { 
        height: 140px !important; 
    }
    
    #manualNumbers { 
        height: 140px !important; 
    }
    
    [id^="reply-"] { 
        min-height: 60px !important; 
        max-height: 120px !important; 
    }
    
    .form-control { 
        font-size: 18px !important; 
        padding: 12px; 
        line-height: 1.5; 
    }
    
    .btn { 
        width: 100%; 
        font-size: 1.1rem; 
        padding: 0.75rem !important; 
        margin-bottom: 10px; 
    }
    
    .btn-sm { 
        padding: 0.5rem 0.8rem !important; 
        font-size: 0.95rem; 
    }
    
    .btn-outline-success { 
        font-size: 0.95rem; 
    }
    
    .nav-tabs { 
        border-bottom: 2px solid #222; 
        gap: 0; 
    }
    
    .nav-link { 
        padding: 0.8rem !important; 
        font-size: 1rem; 
        border-radius: 0; 
    }
    
    .nav-item { 
        flex: 1; 
        text-align: center; 
    }
    
    .table { 
        font-size: 0.95rem; 
    }
    
    thead th { 
        font-size: 0.9rem; 
        padding: 10px 6px !important; 
        text-align: center; 
    }
    
    .table tbody td { 
        padding: 8px 6px !important; 
        font-size: 0.95rem; 
    }
    
    .table tbody td strong { 
        display: block; 
        font-size: 1rem; 
    }
    
    .badge { 
        font-size: 0.85rem; 
        padding: 4px 8px !important; 
    }
    
    small { 
        font-size: 0.9rem !important; 
    }
    
    /* Hide some columns on very small screens */
    .table th:nth-child(4), 
    .table td:nth-child(4),
    .table th:nth-child(5),
    .table td:nth-child(5),
    .table th:nth-child(6),
    .table td:nth-child(6),
    .table th:nth-child(7),
    .table td:nth-child(7),
    .table th:nth-child(8),
    .table td:nth-child(8) {
        display: none !important;
        width: 0 !important;
        padding: 0 !important;
        border: 0 !important;
    }
    
    @media (max-width: 767.98px) {
        .table th:nth-child(1),
        .table td:nth-child(1) {
            width: 50px !important;
        }
        
        .table th:nth-child(2),
        .table td:nth-child(2) {
            width: auto !important;
            min-width: 120px;
        }
        
        .table th:nth-child(3),
        .table td:nth-child(3) {
            width: auto !important;
            min-width: 100px;
        }
    }
    
    #filtersContainer { 
        margin-bottom: 15px; 
    }
    
    .filter-btn { 
        font-size: 0.9rem; 
        padding: 4px 12px; 
        margin: 3px 3px; 
    }
    
    .filter-label { 
        font-size: 0.9rem; 
    }
    
    #toggleFilters { 
        font-size: 0.95rem; 
    }
    
    .d-flex.align-items-center.justify-content-between { 
        flex-wrap: wrap; 
        gap: 10px; 
    }
    
    h5 { 
        font-size: 1.2rem; 
        margin-bottom: 10px !important; 
    }
    
    .progress { 
        height: 12px; 
    }
    
    #db-panel .card .dataTables_scroll {
        height: 100% !important;
        max-height: none !important;
    }
    
    #db-panel .card .dataTables_paginate {
        margin-top: 15px;
        padding: 10px 0;
        border-top: 1px solid #222;
    }
    
    #db-panel .card .dataTables_info {
        margin-top: 10px;
        font-size: 0.85rem;
    }
    
    .pagination {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .pagination .page-item {
        margin: 2px;
    }
    
    .pagination .page-link {
        padding: 6px 10px;
        font-size: 0.85rem;
    }
    
    #btnCompose { 
        font-size: 0.9rem; 
        padding: 0.6rem 1rem !important; 
        border-radius: 50px;
        white-space: nowrap;
    }
    
    @media (max-width: 767.98px) {
        .d-flex.gap-2.align-items-stretch {
            display: flex !important;
            gap: 6px !important;
            padding: 6px !important;
            border-radius: 20px;
            background-color: #222;
            align-items: center !important;
            flex-wrap: nowrap !important;
        }
        
        .d-flex.gap-2.align-items-stretch button {
            border-radius: 16px !important;
            padding: 6px 8px !important;
            min-width: 36px !important;
            width: 36px !important;
            height: 36px !important;
            display: flex !important;
            align-items: center !important;
            justify-content: center !important;
            flex-shrink: 0 !important;
        }
        
        .d-flex.gap-2.align-items-stretch textarea {
            border-radius: 16px !important;
            padding: 8px 10px !important;
            flex: 1 1 auto !important;
            max-height: 50px !important;
            min-height: 36px !important;
            resize: none !important;
            font-size: 0.9rem;
            line-height: 1.3;
            margin: 0 !important;
        }
    }
    
    .modal-dialog { 
        margin: 10px; 
    }
    
    .modal-content { 
        border-radius: 8px; 
    }
    
    .modal-header { 
        padding: 14px; 
    }
    
    .modal-title { 
        font-size: 1.2rem; 
    }
    
    .modal-body { 
        padding: 0; 
        max-height: 70vh; 
        overflow-y: auto; 
    }
    
    .modal-body .table { 
        font-size: 1rem; 
    }
    
    .modal-body .table th, 
    .modal-body .table td { 
        padding: 10px 8px !important; 
    }
    
    .btn-close { 
        width: 1.8rem; 
        height: 1.8rem; 
    }
    
    #manualStatus { 
        font-size: 0.95rem; 
    }
    
    /* Improve touch targets */
    input[type="checkbox"] { 
        width: 22px; 
        height: 22px; 
        cursor: pointer; 
    }
    
    .user-check { 
        margin: 0 8px; 
    }
    
    /* Sticky reply container */
    div[style*="padding: 15px; background-color: #1a1a1a; border-top: 1px solid #222;"] {
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        z-index: 50 !important;
        background-color: #1a1a1a !important;
        padding: 15px !important;
        border-top: 1px solid #222 !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    [id^="emoji-picker-"] {
        position: fixed;
        bottom: 80px;
        left: 50%;
        transform: translateX(-50%);
        width: min(420px, calc(100% - 24px));
        max-height: 260px;
        overflow-y: auto;
        background-color: #222;
        border: 1px solid #333;
        border-radius: 12px;
        padding: 12px;
        box-shadow: 0 8px 24px rgba(0,0,0,0.6);
        z-index: 3002;
        display: none;
        pointer-events: auto;
    }

    [id^="emoji-picker-"] > div {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }

    [id^="emoji-picker-"] button {
        flex: 0 0 calc((100% - 7*6px)/8);
        max-width: calc((100% - 7*6px)/8);
        justify-content: center;
        align-items: center;
        padding: 6px 0 !important;
    }

    [id^="emoji-picker-"] .emoji-picker-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 8px;
        color: #e0e0e0;
        font-weight: 600;
    }

    #emojiPickerBackdrop {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: 1;
        display: none;
    }
    
    /* Small landscape orientation */
    @media (max-height: 500px) {
        h2 { 
            font-size: 1.2rem; 
        }
        
        .card-body { 
            padding: 10px; 
        }
        
        #smsBody, 
        #manualNumbers { 
            height: 100px !important; 
        }
        
        .table { 
            font-size: 0.85rem; 
        }
        
        thead th { 
            font-size: 0.8rem; 
            padding: 6px 4px !important; 
        }
        
        .table tbody td { 
            padding: 6px 4px !important; 
        }
    }
}

/* Extra small screens (under 480px) */
@media (max-width: 479.98px) {
    .container-fluid { 
        padding: 10px; 
    }
    
    h2 { 
        font-size: 1.1rem; 
        margin-bottom: 15px !important; 
    }
    
    .table { 
        font-size: 0.7rem; 
    }
    
    thead th { 
        font-size: 0.65rem; 
        padding: 4px 1px !important; 
    }
    
    .table tbody td { 
        padding: 4px 1px !important; 
    }
    
    .btn { 
        font-size: 0.85rem; 
        padding: 0.4rem !important; 
    }
    
    .badge { 
        font-size: 0.6rem; 
    }
    
    .filter-btn { 
        font-size: 0.65rem; 
        padding: 1px 6px; 
    }
    
    .nav-link { 
        padding: 0.5rem 0.6rem !important; 
        font-size: 0.8rem; 
    }
    
    #btnHistory { 
        font-size: 0.75rem; 
        padding: 0.4rem 0.6rem !important; 
    }
}

/* Landscape orientation adjustments */
@media (max-width: 767.98px) and (orientation: landscape) {
    h2 { 
        margin-bottom: 10px !important; 
    }
    
    .card { 
        margin-bottom: 10px; 
    }
    
    .card-body { 
        padding: 8px; 
    }
    
    #smsBody, 
    #manualNumbers { 
        height: 80px !important; 
    }
    
    .table { 
        font-size: 0.7rem; 
    }
    
    thead th { 
        padding: 4px 2px !important; 
    }
    
    .table tbody td { 
        padding: 4px 2px !important; 
    }
}

/* Landscape for tablets */
@media (min-width: 768px) and (orientation: landscape) {
    .card.sticky-top { 
        position: sticky !important; 
        top: 20px; 
    }
}
/* Icon-only buttons styling */
.btn-icon-only {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: auto !important;
    height: auto !important;
    padding: 0 !important;
    border: none !important;
    background-color: transparent !important;
    color: #31a651 !important;
    border-radius: 0 !important;
    transition: all 0.2s ease !important;
    cursor: pointer !important;
    flex-shrink: 0;
}

.btn-icon-only:hover {
    background-color: transparent !important;
    color: #31a651 !important;
}

.btn-icon-only:disabled {
    opacity: 0.5 !important;
    cursor: not-allowed !important;
}

.btn-icon-only svg {
    display: block;
    width: 18px;
    height: 18px;
    stroke: #31a651;
}

.btn-icon-only:hover svg {
    stroke: #31a651;
}

.btn-icon-only.spinning svg {
    animation: spin-icon 0.8s linear infinite !important;
}

@keyframes spin-icon {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Active filters container - compact styling */
.active-filters-container {
    display: none;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 0.80rem;
    max-height: 60px;
    overflow-y: auto;
    padding-right: 4px;
}

.active-filters-container[style*="display: flex"] {
    display: flex !important;
}

.active-filters-container .badge {
    padding: 4px 8px;
    font-size: 0.75rem;
    white-space: nowrap;
}

/* Mobile optimization for filters */
@media (max-width: 768px) {
    .active-filters-container {
        max-height: 50px;
        gap: 4px;
    }

    .active-filters-container .badge {
        padding: 3px 6px;
        font-size: 0.70rem;
    }

    .btn-icon-only {
        width: 32px;
        height: 32px;
    }

    .btn-icon-only svg {
        width: 16px;
        height: 16px;
    }

    /* DataTable optimization for mobile phones */
    #db-panel .card {
        padding: 12px !important;
        border-radius: 8px;
    }

    #db-panel .card .d-flex.align-items-center.justify-content-between {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 12px !important;
    }

    #db-panel .card h5 {
        margin-bottom: 0;
        font-size: 1.1rem;
        flex-shrink: 0;
    }

    #db-panel .card .d-flex.gap-2 {
        width: auto;
        justify-content: flex-end;
        flex-shrink: 0;
    }

    /* Active filters - very compact on mobile */
    .active-filters-container {
        max-height: 40px;
        gap: 3px;
    }

    .active-filters-container .badge {
        padding: 2px 5px;
        font-size: 0.65rem;
    }

    /* Search input */
    #customSearch {
        font-size: 0.9rem;
        padding: 0.4rem 0.6rem !important;
        margin-bottom: 10px !important;
    }

    /* Table visibility and scrolling */
    #participantsTable {
        width: 100% !important;
        margin-bottom: 0;
    }

    #participantsTable thead th {
        font-size: 0.70rem;
        padding: 6px 3px !important;
    }

    #participantsTable tbody td {
        padding: 5px 3px !important;
        font-size: 0.75rem;
    }

    #participantsTable tbody td strong {
        font-size: 0.9rem;
    }

    /* Hide non-essential columns on mobile */
    #participantsTable th:nth-child(4), 
    #participantsTable td:nth-child(4),
    #participantsTable th:nth-child(5),
    #participantsTable td:nth-child(5),
    #participantsTable th:nth-child(6),
    #participantsTable td:nth-child(6),
    #participantsTable th:nth-child(7),
    #participantsTable td:nth-child(7) {
        display: none !important;
    }

    /* Show checkbox and name columns prominently */
    #participantsTable th:nth-child(1),
    #participantsTable td:nth-child(1) {
        width: 40px;
        text-align: center;
    }

    #participantsTable th:nth-child(2),
    #participantsTable td:nth-child(2) {
        flex-grow: 1;
        min-width: 140px;
    }

    #participantsTable th:nth-child(3),
    #participantsTable td:nth-child(3) {
        flex-grow: 1;
        min-width: 120px;
    }

    /* DataTables pagination on mobile */
    .dataTables_paginate {
        margin-top: 10px;
    }

    .dataTables_paginate .pagination {
        flex-wrap: wrap;
        gap: 2px;
    }

    .pagination .page-link {
        padding: 0.35rem 0.5rem !important;
        font-size: 0.75rem;
    }

    /* Information text smaller */
    #participantsTable_info {
        font-size: 0.70rem !important;
    }
}