/* --- VARIABLES --- */
:root {
    --bg-main: #0c0d10;
    --bg-pane: #121319;
    --bg-header: #171921;
    --bg-card: #191b22;
    --bg-terminal: #08090c;
    --border: #23262f;
    --border-hover: #353945;
    
    --text-primary: #f4f5f6;
    --text-secondary: #777e90;
    --text-muted: #4f566b;
    
    /* Tactile accents - Amber/Industrial Gold */
    --accent: #ff9f1c;
    --accent-hover: #f39c12;
    --accent-glow: rgba(255, 159, 28, 0.15);
    
    --success: #2ec4b6;
    --error: #e71d36;
    --info: #00c9ff;
    
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- RESET & BASE --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    height: 100vh;
    overflow: hidden;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-weight: 600;
}

/* --- APP HEADER --- */
.app-header {
    height: 52px;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 10;
    position: relative;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-logo {
    height: 32px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-image {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.app-title-group {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.app-title-group h1 {
    font-size: 16px;
    letter-spacing: -0.3px;
}

.app-version {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* --- WORKSPACE LAYOUT --- */
.workspace-container {
    display: flex;
    height: calc(100vh - 52px);
    overflow: hidden;
    position: relative;
}

@media (max-width: 1024px) {
    .workspace-container {
        flex-direction: column;
        overflow-y: auto;
    }
    .resizer {
        height: 4px;
        width: 100% !important;
        cursor: row-resize;
    }
    .inspector-pane {
        width: 100% !important;
        max-width: none !important;
    }
}

/* --- PANES --- */
.media-pane {
    background-color: var(--bg-main);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex-grow: 1;
    flex-shrink: 1;
    min-width: 300px;
}

.resizer {
    width: 4px;
    background-color: var(--border);
    cursor: col-resize;
    transition: background-color 0.2s;
    user-select: none;
    flex-shrink: 0;
    z-index: 5;
}

.resizer:hover, .resizer.dragging {
    background-color: var(--accent);
}

.inspector-pane {
    background-color: var(--bg-pane);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 24px;
    width: 400px;
    min-width: 280px;
    max-width: 600px;
    flex-shrink: 0;
}

.pane-header {
    height: 44px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid var(--border);
    background-color: var(--bg-pane);
    flex-shrink: 0;
}

.pane-header h2 {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* --- BADGES & STATUSES --- */
.status-badge {
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 4px;
    font-weight: 500;
    border: 1px solid transparent;
}

.status-badge.idle {
    background-color: rgba(119, 126, 144, 0.1);
    color: var(--text-secondary);
    border-color: rgba(119, 126, 144, 0.2);
}

.status-badge.active {
    background-color: rgba(0, 201, 255, 0.1);
    color: var(--info);
    border-color: rgba(0, 201, 255, 0.2);
}

/* --- MEDIA VIEWPORT --- */
.media-viewport {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    position: relative;
    background-image: radial-gradient(circle, #181b24 1px, transparent 1px);
    background-size: 24px 24px;
}

/* --- DRAG & DROP ZONE --- */
.drop-zone {
    width: 100%;
    max-width: 680px;
    height: 380px;
    border: 1.5px dashed var(--border-hover);
    border-radius: 12px;
    background-color: rgba(18, 19, 25, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    padding: 40px;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--accent);
    background-color: rgba(255, 159, 28, 0.03);
    box-shadow: inset 0 0 20px rgba(255, 159, 28, 0.02);
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.upload-icon {
    font-size: 44px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    transition: var(--transition);
}

.drop-zone:hover .upload-icon {
    color: var(--accent);
    transform: translateY(-4px);
}

.drop-zone h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.drop-zone p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* --- PREVIEW CONTAINER --- */
.preview-container {
    width: 100%;
    max-width: 680px;
    height: 100%;
    max-height: 480px;
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    background-color: #050608;
    border: 1px solid var(--border);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
}

.preview-container video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.reset-overlay-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background-color: rgba(18, 19, 25, 0.8);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.reset-overlay-btn:hover {
    background-color: var(--error);
    border-color: var(--error);
    color: white;
}

/* --- INSPECTOR SECTIONS --- */
.inspector-placeholder {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
}

.inspector-placeholder i {
    font-size: 32px;
    margin-bottom: 16px;
    color: var(--text-muted);
}

.inspector-placeholder p {
    font-size: 13px;
    max-width: 240px;
}

.inspector-content {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.inspector-section {
    border-bottom: 1px solid var(--border);
    padding-bottom: 24px;
}

.inspector-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

/* --- METADATA GRID --- */
.metadata-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.metadata-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.meta-label {
    font-size: 10px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.meta-value {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* --- ASPECT RATIO VISUALIZER --- */
.aspect-visualizer-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.visualizer-canvas-wrapper {
    width: 140px;
    height: 140px;
    background-color: #090a0d;
    border-radius: 6px;
    border: 1px solid var(--border);
    overflow: hidden;
    padding: 10px;
}

.visualizer-legend {
    display: flex;
    justify-content: center;
    gap: 16px;
    font-size: 11px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
}

.color-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.color-dot.src { background-color: var(--info); }
.color-dot.tgt { background-color: var(--accent); }

.aspect-advice-box {
    width: 100%;
    background-color: rgba(255, 159, 28, 0.05);
    border: 1px solid rgba(255, 159, 28, 0.15);
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-primary);
    text-align: center;
}

.aspect-advice-box strong {
    color: var(--accent);
}

/* --- FORM ELEMENTS --- */
.form-group {
    margin-bottom: 12px;
}

.custom-select {
    width: 100%;
    height: 38px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 6px;
    padding: 0 12px;
    font-size: 13px;
    font-family: var(--font-sans);
    cursor: pointer;
    outline: none;
    transition: var(--transition);
}

.custom-select:hover, .custom-select:focus {
    border-color: var(--accent);
}

.target-dimensions-badge {
    font-size: 12px;
    color: var(--text-secondary);
    background-color: rgba(255, 255, 255, 0.03);
    border-radius: 6px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    display: inline-block;
}

.target-dimensions-badge strong {
    color: var(--accent);
}

/* --- SEGMENTED CONTROL --- */
.segmented-control {
    display: flex;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    padding: 2px;
    border-radius: 6px;
}

.segment-option {
    flex: 1;
    cursor: pointer;
}

.segment-option input {
    display: none;
}

.segment-btn {
    display: block;
    text-align: center;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

.segment-option input:checked + .segment-btn {
    background-color: var(--border-hover);
    color: var(--text-primary);
}

/* --- ACTION BUTTONS --- */
.action-button {
    height: 38px;
    padding: 0 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.action-buttons-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.primary-btn {
    background-color: var(--accent);
    color: #000;
    border: none;
}

.primary-btn:hover {
    background-color: var(--accent-hover);
}

.secondary-btn {
    background-color: transparent;
    border: 1px solid var(--border-hover);
    color: var(--text-primary);
}

.secondary-btn:hover {
    border-color: var(--accent);
    background-color: rgba(255, 159, 28, 0.03);
}

.success-btn {
    background-color: var(--success);
    color: #000;
    border: none;
}

.success-btn:hover {
    opacity: 0.9;
}

.block-btn {
    width: 100%;
    text-decoration: none;
    margin-top: 10px;
}

.icon-button {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.icon-button:hover {
    color: var(--text-primary);
}

.close-button {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
}

.close-button:hover {
    color: var(--text-primary);
}

/* --- LOADER OVERLAY --- */
.loader-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(12, 13, 16, 0.85);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 5;
    border-radius: 10px;
}

.spinner-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.custom-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255, 159, 28, 0.1);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

#upload-progress-text {
    font-size: 13px;
    color: var(--accent);
    font-weight: 500;
}

/* --- PROCESSING BOX --- */
.processing-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.processing-header {
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
}

.processing-progress-bar {
    width: 100%;
    height: 4px;
    background-color: var(--bg-main);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

.terminal-console {
    background-color: var(--bg-terminal);
    border: 1px solid var(--border);
    border-radius: 6px;
    height: 110px;
    padding: 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
    white-space: pre-wrap;
}

.console-line {
    color: var(--text-secondary);
}

.console-line.info { color: var(--text-secondary); }
.console-line.cmd { color: var(--info); }
.console-line.success { color: var(--success); }
.console-line.error { color: var(--error); }

/* --- RESULT BOX --- */
.result-box {
    background-color: rgba(46, 196, 182, 0.03);
    border: 1px solid rgba(46, 196, 182, 0.15);
    border-radius: 8px;
    padding: 16px;
}

.result-success-header {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: 12px;
}

.success-icon {
    font-size: 24px;
    color: var(--success);
    margin-top: 2px;
}

.result-success-header h4 {
    font-size: 13px;
    color: var(--success);
    margin-bottom: 2px;
}

.result-success-header p {
    font-size: 11px;
    color: var(--text-secondary);
}

/* --- HELP PANEL --- */
.help-panel {
    position: absolute;
    top: 52px;
    right: 0;
    width: 320px;
    height: calc(100vh - 52px);
    background-color: var(--bg-pane);
    border-left: 1px solid var(--border);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    transform: translateX(0);
}

.help-panel.hidden {
    transform: translateX(100%);
}

.help-header {
    height: 48px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.help-header h3 {
    font-size: 13px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-content {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.help-step {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.step-num {
    width: 20px;
    height: 20px;
    background-color: var(--accent);
    color: #000;
    font-size: 11px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.help-step p {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.help-step p strong {
    color: var(--text-primary);
}

/* --- UTILITIES --- */
.hidden {
    display: none !important;
}

/* --- ANIMATIONS --- */
@keyframes spin {
    to { transform: rotate(360deg); }
}