html,
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-image: url(/images/backgrounds/mbg.png);
    color: #fff;
    overflow: hidden;
    height: 100%;
    background-size: cover;
    background-repeat: no-repeat;
}

.tab-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    padding: 6px 5px;
    background: linear-gradient(to right, #0a0a12, #120b1e, #120a1d, #0f0b19);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.tab {
    display: flex;
    align-items: center;
    padding: 5px 15px;
    margin-right: 10px;
    background: linear-gradient(135deg, #303030, #404040);
    color: #c0c0c0;
    border-radius: 9px;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
    cursor: pointer;
    transition: background 0.3s, color 0.3s, box-shadow 0.3s;
    white-space: nowrap;
    flex-shrink: 0;
    transform: translateX(-100%) scale(0.8);
    opacity: 0;
    animation: slide-in 0.4s forwards;
}

@keyframes slide-in {
    from {
        transform: translateX(-100%) scale(0.8);
        opacity: 0;
    }
    to {
        transform: translateX(0) scale(1);
        opacity: 1;
    }
}

.tab.active {
    background: linear-gradient(135deg, #3b3b6a, #2c2c68);
    color: #fff;
    box-shadow: 0 0 30px rgba(37, 18, 114, 0.2);
}

.tab:hover {
    background: linear-gradient(135deg, #251362, #2a1c5a);
}

.tab .close-btn {
    margin-left: 10px;
    color: #888;
    cursor: pointer;
    font-size: 21px;
    transition: color 0.3s;
}

.tab .close-btn:hover {
    color: #f66;
}

.new-tab {
    padding: 8px 10px;
    margin-left: auto;
    background: linear-gradient(135deg, #3b3b6a, #2c2c68);
    color: #ffffff;
    border-radius: 8px;
    margin-right: 10px;
    cursor: pointer;
    transition: background 0.3s, color 0.3s, box-shadow 0.3s;
}

.new-tab:hover {
    background: linear-gradient(135deg, #251362, #2a1c5a);
    color: #fff;
    box-shadow: 0 0 30px rgba(37, 18, 114, 0.2);
}

.warning {
    color: #f66;
    font-size: 14px;
    margin-left: 15px;
    display: none;
    animation: fade-in 0.3s ease-in-out;
}

.no-tabs-message {
    text-align: center;
    margin-top: 20px;
    font-size: 18px;
    color: #bbb;
    animation: fade-in 0.5s ease-in-out;
}

.iframe-container {
    height: calc(100vh - 56px);
    display: none;
    background-color: #000000;
    border-top: 2px solid #130929;
}

.iframe-container.active {
    display: block;
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
}

@keyframes fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slide-out {
    from {
        transform: translateX(0) scale(1);
        opacity: 1;
    }
    to {
        transform: translateX(-100%) scale(0.8);
        opacity: 0;
    }
}

.settings-button {
    text-decoration: none;
    cursor: pointer;
    padding: 8px 10px;
    background: linear-gradient(135deg, #3b3b6a, #2c2c68);
    color: white;
    border-radius: 8px;
    user-select: none;
    gap: 10px;
    transition: background 0.3s ease; 
}

.settings-button:hover {
    background: linear-gradient(135deg, #251362, #2a1c5a);
}