.vtx-container {
    margin-top: 20px;
}

.vtx-card-panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 60px 40px;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

#fileInput {
    display: none;
}

.file-select-label {
    display: inline-block;
    width: 100%;
    max-width: 550px;
    padding: 45px 40px; 
    background: rgba(88, 166, 255, 0.03);
    border: 2px dashed var(--accent);
    color: var(--accent);
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: 18px;
    letter-spacing: 0.5px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-sizing: border-box;
    transition: all 0.2s ease-in-out;
}

.file-select-label:hover {
    background: rgba(88, 166, 255, 0.1);
    border-color: #79b7ff;
    transform: translateY(-1px);
}

.file-select-label.has-file {
    border-style: solid;
    border-color: #3fb950;
    color: #3fb950;
    background: rgba(56, 139, 253, 0.1);
    box-shadow: 0 0 20px rgba(56, 139, 253, 0.15);
}

#btnFlash {
    padding: 16px 60px;
    font-size: 16px;
    font-weight: bold;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    opacity: 0.4;
    width: 260px;
    transition: all 0.2s ease;
}

#btnFlash:not([disabled]) {
    opacity: 1;
    box-shadow: 0 0 15px rgba(88, 166, 255, 0.3);
}

#btnFlash:not([disabled]):hover {
    transform: translateY(-2px);
    background: #79b7ff;
}

.vtx-progress-container {
    width: 100%;
    max-width: 550px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    padding: 20px;
    border-radius: 8px;
    margin-top: 10px;
    box-sizing: border-box;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 14px;
}

#progressStatus {
    color: var(--text);
}

#progressPercent {
    color: var(--accent);
    font-weight: bold;
}

.progress-track {
    width: 100%;
    height: 8px;
    background: #21262d;
    border-radius: 4px;
    overflow: hidden;
}

#progressFill {
    width: 0%;
    height: 100%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent);
    transition: width 0.1s ease;
}