/* === Tool Page === */
.tool-page {
    padding-top: 84px;
    min-height: 100vh;
}

.tool-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

/* === Steps === */
.tool-step {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    margin-bottom: 24px;
}

.tool-step.hidden {
    display: none;
}

.step-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.step-badge {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.step-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
}

/* === Upload Zone === */
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--primary);
    background: rgba(108, 92, 231, 0.05);
}

.upload-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.upload-prompt p {
    color: var(--text-muted);
    margin-bottom: 4px;
}

.upload-formats {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.6;
}

.upload-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.upload-loading.hidden {
    display: none;
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === Video Preview === */
#video-preview-wrapper {
    margin-top: 16px;
}

#video-preview-wrapper.hidden {
    display: none;
}

#video-preview,
#result-video {
    width: 100%;
    max-height: 360px;
    object-fit: contain;
    border-radius: 8px;
    background: #000;
}

#btn-reupload {
    margin-top: 12px;
}

/* === Editor Toolbar === */
.editor-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.tool-btn {
    padding: 8px 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.15s;
}

.tool-btn:hover {
    border-color: var(--primary);
    color: var(--text);
}

.tool-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.size-control {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.size-control label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

#brush-size {
    width: 100px;
    accent-color: var(--primary);
}

#size-label {
    font-size: 0.85rem;
    color: var(--text);
    min-width: 24px;
}

/* === Canvas === */
#canvas-wrapper {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background: #000;
    margin-bottom: 20px;
    line-height: 0;
    display: flex;
    justify-content: center;
}

#editor-canvas {
    display: block;
    max-width: 100%;
    max-height: 360px;
    width: auto;
    height: auto;
    cursor: crosshair;
}

/* === Frame Slider === */
.frame-slider-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.frame-slider {
    flex: 1;
    accent-color: var(--primary);
}

.frame-slider-wrapper label {
    white-space: nowrap;
    min-width: 80px;
}

/* === Buttons === */
.btn-primary {
    display: block;
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
}

.btn-secondary {
    display: inline-block;
    padding: 10px 20px;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--text);
}

/* === Progress === */
.progress-bar-track {
    width: 100%;
    height: 8px;
    background: var(--bg-alt);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 16px;
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    width: 0%;
    transition: width 0.3s ease;
}

#progress-message {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* === Result === */
#result-area.hidden {
    display: none;
}

.result-buttons {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.result-buttons .btn-primary {
    flex: 2;
}

.result-buttons .btn-secondary {
    flex: 1;
    text-align: center;
    padding: 14px;
}

/* === Responsive === */
@media (max-width: 600px) {
    .tool-step {
        padding: 20px 16px;
    }

    .editor-toolbar {
        gap: 6px;
    }

    .size-control {
        margin-left: 0;
        width: 100%;
        margin-top: 4px;
    }

    .result-buttons {
        flex-direction: column;
    }
}