public/css/style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.app-container {
    height: 100vh;
    padding: 20px;
    background: #f0f2f5;
}

.join-form {
    max-width: 400px;
    margin: 40px auto;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 15px;
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.button-group {
    display: flex;
    gap: 10px;
}

.primary-btn, .secondary-btn {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
}

.primary-btn {
    background: #0056d6;
    color: white;
}

.secondary-btn {
    background: #f0f2f5;
    color: #0056d6;
}

.meeting-room {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.meeting-header {
    padding: 15px;
    background: white;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.room-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.video-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    padding: 1rem;
    overflow: auto;
}

.video-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    background: #2c2c2c;
    border-radius: 8px;
    overflow: hidden;
    background: #2a2a2a;
    aspect-ratio: 16/9;
}

video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    bottom: 10px;
    left: 10px;
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    background: rgba(0,0,0,0.5);
}

.controls-bar {
    padding: 20px;
    display: flex;
    justify-content: center;
    gap: 1rem;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 8px;
}

.control-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: #424242;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    background: #616161;
}

.control-btn.danger {
    background: #dc3545;
    color: white;
}

.control-btn.leave-btn {
    background: #dc3545;
}

.control-btn.leave-btn:hover {
    background: #c82333;
}

.icon-button {
    border: none;
    background: none;
    cursor: pointer;
    padding: 5px;
}

.hidden {
    display: none;
}

.video-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    background: #1a1a1a;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease; /* Smooth transition for video containers */
}

.video-wrapper.removing {
    opacity: 0;
    transform: scale(0.8);
}

.video-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.participant-name {
    position: absolute;
    bottom: 10px;
    left: 10px;
    color: white;
    background: rgba(0, 0, 0, 0.5);
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 14px;
}

.video-grid {
    display: grid;
    gap: 10px;
    padding: 10px;
    height: calc(100vh - 100px);
    grid-auto-flow: dense; /* Helps fill gaps automatically */
    transition: all 0.3s ease; /* Smooth transition when layout changes */
}

.video-grid.single-participant {
    grid-template-columns: 1fr;
}

.video-grid.two-participants {
    grid-template-columns: repeat(2, 1fr);
}

.video-grid.few-participants {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
}

.video-grid.many-participants {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    grid-auto-rows: 1fr;
}

.participant-list {
    position: fixed;
    right: 0;
    top: 0;
    width: 250px;
    height: 100vh;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 20px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.participant-list.show {
    transform: translateX(0);
}

.participant-list h3 {
    margin: 0 0 10px 0;
    padding-bottom: 5px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

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

.participant-list li {
    padding: 8px 10px;
    margin: 5px 0;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    animation: participantFade 0.3s ease-in-out;
}

.participant-list li.leaving {
    animation: participantLeave 0.3s ease-in-out forwards;
}

.participant-list li .material-icons {
    margin-right: 8px;
    font-size: 18px;
}

@keyframes participantFade {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes participantLeave {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(20px);
    }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Screen share participant styling */
.screen-share-participant {
    font-style: italic;
    color: #4CAF50;
}

.video-wrapper[id^="video-screen_"] {
    border: 2px solid #4CAF50;
}

/* Active share button state */
#shareScreenBtn.active {
    background-color: #4CAF50;
    color: white;
}

.notifications-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.notification {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 10px 20px;
    border-radius: 4px;
    margin-bottom: 10px;
    animation: fadeIn 0.3s ease;
}

.notification.error {
    background: rgba(220, 53, 69, 0.9);
}

.room-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: #1a1a1a;
}

/* Modal Styles Enhancement */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
}

.modal-content {
    position: relative;
    background-color: #fff;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transform: scale(0.7);
    opacity: 0;
    transition: all 0.3s ease;
}

.modal.show .modal-content {
    transform: scale(1);
    opacity: 1;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #eee;
}

.modal-header h3 {
    margin: 0;
    color: #333;
    font-size: 1.5rem;
    font-weight: 500;
}

.close-btn {
    background: none;
    border: none;
    color: #666;
    font-size: 24px;
    cursor: pointer;
    padding: 0 8px;
    transition: color 0.2s ease;
}

.close-btn:hover {
    color: #333;
}

.mask-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    padding: 20px;
    max-height: calc(80vh - 80px);
    overflow-y: auto;
}

.mask-option {
    background: #fff;
    border-radius: 8px;
    padding: 15px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.mask-option:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.mask-option.selected {
    border-color: #2196F3;
    background-color: #E3F2FD;
}

.mask-option img {
    width: 100%;
    height: 150px;
    object-fit: contain;
    border-radius: 4px;
    margin-bottom: 10px;
}

.mask-name {
    text-align: center;
    font-size: 14px;
    color: #333;
    font-weight: 500;
    text-transform: capitalize;
}

.mask-category {
    color: #666;
    font-size: 12px;
    margin-top: 5px;
    text-align: center;
}

/* Scrollbar style for mask grid */
.mask-grid::-webkit-scrollbar {
    width: 8px;
}

.mask-grid::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.mask-grid::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

.mask-grid::-webkit-scrollbar-thumb:hover {
    background: #666;
}

.control-btn.active {
    background-color: #dc3545;
    color: white;
}