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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f5f6fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
}

.navbar-brand i {
    margin-right: 8px;
}

.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.card-header {
    border-radius: 12px 12px 0 0 !important;
}

.nav-tabs .nav-link {
    border: none;
    color: #6c757d;
    font-weight: 500;
}

.nav-tabs .nav-link.active {
    color: #007bff;
    border-bottom: 2px solid #007bff;
}

.form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 8px;
    padding: 10px 24px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a6fd6 0%, #6a4190 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    border: none;
    border-radius: 8px;
    padding: 10px 24px;
    font-weight: 500;
}

.btn-success:hover {
    background: linear-gradient(135deg, #0f8a80 0%, #2fd66b 100%);
    transform: translateY(-2px);
}

.room-card {
    transition: all 0.3s ease;
    border: none;
    border-radius: 12px;
    overflow: hidden;
}

.room-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.room-card .card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 500;
}

.chat-messages {
    background-color: #f8f9fa;
    padding: 10px;
}

.chat-message {
    animation: fadeIn 0.3s ease;
}

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

.chat-message.system-message {
    color: #6c757d;
    font-style: italic;
}

.member-item {
    transition: background-color 0.2s ease;
}

.member-item:hover {
    background-color: #f8f9fa;
}

.member-item img {
    object-fit: cover;
}

.voice-controls {
    margin-top: 20px;
}

.voice-controls .btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    font-size: 24px;
    transition: all 0.3s ease;
}

.voice-controls .btn:hover {
    transform: scale(1.1);
}

.speaking-indicator {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 1;
    }
}

.speaking-users .user-avatar {
    display: inline-block;
    margin: 0 10px;
    animation: speaking 0.5s infinite alternate;
}

@keyframes speaking {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.1);
    }
}

.footer {
    margin-top: auto;
}

.room-page {
    background-color: #f5f6fa;
}

.min-vh-100 {
    min-height: 100vh !important;
}

@media (max-width: 768px) {
    .voice-controls .btn {
        width: 60px;
        height: 60px;
        font-size: 20px;
    }

    .card-body {
        padding: 1rem;
    }
}

.alert {
    border-radius: 8px;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

.grid {
    display: grid;
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.gap-2 {
    gap: 0.5rem;
}

.gap-3 {
    gap: 1rem;
}

.cursor-pointer {
    cursor: pointer;
}

.mic-position {
    transition: all 0.3s ease;
}

.mic-position:hover {
    transform: translateY(-2px);
}

.gift-item:hover {
    transition: all 0.3s ease;
    transform: translateY(-2px);
}

.gift-item.border-primary {
    border-width: 2px;
}

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

.room-card .card-body {
    flex-grow: 1;
}

.member-item:hover {
    background-color: #f8f9fa;
    transition: background-color 0.2s ease;
}

.chat-messages {
    scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #555;
}

#memberList::-webkit-scrollbar {
    width: 6px;
}

#memberList::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

#memberList::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 10px;
}

#memberList::-webkit-scrollbar-thumb:hover {
    background: #555;
}

@media (max-width: 768px) {
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .voice-controls .btn {
        width: 50px;
        height: 50px;
        font-size: 16px;
    }
}