* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #fff;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 14px;
}

.main-container {
    flex: 1;
    display: flex;
    gap: 1px;
    background: #1a1a1a;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    min-height: 0;
}

.sidebar {
    width: 270px;
    flex-shrink: 0;
    background: #3c3c3c;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 16px;
    gap: 14px;
}

.panel {
    background: #383838;
    border-radius: 6px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.panel-title {
    font-size: 11px;
    font-weight: 600;
    color: #777;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 4px;
    padding-bottom: 8px;
    border-bottom: 1px solid #4a4a4a;
}

.sidebar-btn {
    width: 100%;
    padding: 7px 14px;
    background: #5e5e5e;
    border: none;
    border-radius: 4px;
    color: #fff;
    cursor: pointer;
    font-size: 13px;
    font-family: inherit;
    transition: background 0.15s;
    text-align: center;
}

.sidebar-btn:hover {
    background: #6a6a6a;
}

.sidebar-btn:active {
    transform: translateY(1px);
}

.axis-panel {
    gap: 12px;
}

.axis-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 12px;
}

.axis-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: #d4d4d4;
    cursor: pointer;
}

.axis-toggle input {
    width: 14px;
    height: 14px;
    margin: 0;
    accent-color: #0078d7;
}

.axis-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.axis-field span {
    font-size: 10px;
    color: #8f8f8f;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.axis-input {
    width: 100%;
    padding: 7px 8px;
    border: 1px solid #565656;
    border-radius: 4px;
    background: #2f2f2f;
    color: #f0f0f0;
    font-size: 12px;
    font-family: Consolas, monospace;
}

.axis-input:focus {
    outline: none;
    border-color: #0078d7;
    box-shadow: 0 0 0 1px rgba(0, 120, 215, 0.2);
}

.axis-input:disabled {
    color: #777;
    background: #343434;
    cursor: not-allowed;
}

.axis-reset-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.axis-reset-btn:disabled:hover {
    background: #5e5e5e;
}

#file-details {
    display: none;
    font-family: Consolas, monospace;
    font-size: 12px;
    line-height: 1.85;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    gap: 6px;
}

.detail-key {
    color: #666;
}

.detail-val {
    color: #ccc;
    text-align: right;
    word-break: break-all;
}

#channels-panel {
    display: none;
}

.panel-files {
    display: none;
    overflow: visible;
}

.panel-files.visible {
    display: flex;
}

.file-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow: visible;
}

.file-card {
    position: relative;
    z-index: 0;
    overflow: visible;
    background: linear-gradient(180deg, #4a4a4a 0%, #404040 100%);
    border: 1px solid #575757;
    border-radius: 8px;
    padding: 12px 12px 10px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}

.file-card-body {
    cursor: pointer;
}

.file-card:hover,
.file-card:focus-within {
    transform: translateY(-1px);
    z-index: 24;
}

.file-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}

.file-card-name {
    min-width: 0;
    font-size: 13px;
    font-weight: 600;
    color: #f2f2f2;
    line-height: 1.3;
    word-break: break-word;
    padding-right: 6px;
    cursor: default;
}

.file-card-close {
    width: 22px;
    height: 22px;
    border: none;
    border-radius: 4px;
    background: #5c5c5c;
    color: #ddd;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    flex-shrink: 0;
}

.file-card-close:hover {
    background: #7a3e3e;
    color: #fff;
}

.file-card-line {
    font-size: 11px;
    line-height: 1.45;
    color: #d0d0d0;
}

.file-card-line + .file-card-line {
    margin-top: 3px;
}

.file-card-label {
    color: #8f8f8f;
    margin-right: 6px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 10px;
}

.file-card-value {
    color: #e2e2e2;
}

.file-card-channels {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 10px;
    margin-top: 10px;
    overflow: visible;
}

.file-channel {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 20px;
}

.file-channel.ch-off .file-channel-chip,
.file-channel.ch-off .file-color-input {
    opacity: 0.45;
}

.file-channel input {
    margin: 0;
}

.file-color-input {
    width: 14px;
    height: 14px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 3px;
    background: transparent;
    cursor: pointer;
    flex-shrink: 0;
    appearance: none;
    -webkit-appearance: none;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.22);
}

.file-color-input:hover,
.file-color-input:focus-visible {
    border-color: rgba(255, 255, 255, 0.72);
    outline: none;
}

.file-color-input::-webkit-color-swatch-wrapper {
    padding: 0;
}

.file-color-input::-webkit-color-swatch {
    border: none;
    border-radius: 2px;
}

.file-color-input::-moz-color-swatch {
    border: none;
    border-radius: 2px;
}

.file-channel-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    padding: 2px 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #f0f0f0;
    font-family: Consolas, monospace;
    font-size: 11px;
    cursor: default;
}

.channel-tooltip {
    position: fixed;
    z-index: 260;
    display: none;
    width: min(284px, calc(100vw - 56px));
    max-width: calc(100vw - 56px);
    padding: 11px 13px;
    border-radius: 8px;
    background: rgba(25, 25, 25, 0.985);
    border: 1px solid #686868;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
    pointer-events: none;
}

.channel-tooltip.visible {
    display: block;
}

.channel-tooltip.file-tooltip {
    width: min(320px, calc(100vw - 56px));
}

.channel-tooltip pre {
    margin: 0;
    color: #d8d8d8;
    font-family: Consolas, monospace;
    font-size: 11px;
    line-height: 1.45;
    white-space: pre-wrap;
}

.channel-entry {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 10px;
    background: #454545;
    border-radius: 4px;
    font-size: 13px;
    transition: opacity 0.15s;
}

.channel-entry:last-child {
    margin-bottom: 0;
}

.channel-entry.ch-off {
    opacity: 0.4;
}

.ch-toggle {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    cursor: pointer;
    accent-color: #0078d7;
}

.ch-swatch {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    flex-shrink: 0;
}

.ch-entry-name {
    font-weight: 600;
    font-family: Consolas, monospace;
    min-width: 36px;
}

.ch-entry-info {
    font-family: Consolas, monospace;
    font-size: 11px;
    color: #888;
    margin-left: auto;
    text-align: right;
    line-height: 1.7;
}

.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #252525;
    min-width: 0;
}

.file-bar {
    height: 36px;
    background: #3c3c3c;
    border-bottom: 1px solid #4a4a4a;
    display: none;
    align-items: center;
    padding: 0 14px;
    gap: 10px;
    flex-shrink: 0;
}

.file-bar.visible {
    display: flex;
}

.file-toggle {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    cursor: pointer;
    accent-color: #0078d7;
}

#file-bar-name {
    font-size: 13px;
    color: #ccc;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

#file-bar-format {
    font-size: 11px;
    color: #555;
    flex-shrink: 0;
}

.display-area {
    flex: 1;
    position: relative;
    min-height: 0;
    background: #1e1e1e;
}

#drop-zone {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    user-select: none;
    transition: background 0.15s;
}

#drop-zone.drag-over {
    background: rgba(0, 120, 215, 0.08);
}

#drop-zone.hidden {
    display: none;
}

.dz-icon {
    font-size: 52px;
    color: #2e2e2e;
    line-height: 1;
    margin-bottom: 14px;
}

.dz-main {
    font-size: 17px;
    color: #4a4a4a;
    margin-bottom: 8px;
}

.dz-hint {
    font-size: 12px;
    color: #333;
}

#scope {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: none;
}

#scope.visible {
    display: block;
}

#zoom-rect {
    position: absolute;
    display: none;
    border: 1px dashed rgba(170, 220, 255, 0.95);
    background: rgba(40, 130, 190, 0.18);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15);
    pointer-events: none;
    z-index: 18;
}

#zoom-rect.visible {
    display: block;
}

#error-box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #1e0000;
    border: 1px solid #800;
    border-top: 3px solid #c03030;
    color: #f88;
    padding: 22px 30px 18px;
    border-radius: 8px;
    display: none;
    text-align: center;
    max-width: 80%;
    white-space: pre-wrap;
    font-size: 13px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.5);
    z-index: 40;
}

#error-box.visible {
    display: block;
}

#error-box-message {
    padding-right: 16px;
}

.error-box-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    border: 0;
    background: transparent;
    color: #f88;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    padding: 0;
}

.error-box-close:hover,
.error-box-close:focus-visible {
    color: #ffd0d0;
}

#drag-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 120, 215, 0.72);
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

#drag-overlay.active {
    display: flex;
}

.drag-content {
    text-align: center;
    color: #fff;
}

.drag-icon {
    font-size: 72px;
    display: block;
    line-height: 1;
}

.drag-label {
    display: block;
    font-size: 22px;
    margin-top: 16px;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 100;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal-overlay.open {
    display: flex;
}

.modal-box {
    background: #3c3c3c;
    border-top: 3px solid #0078d7;
    border-radius: 8px;
    padding: 24px 28px 20px;
    width: 440px;
    max-width: 90vw;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.5);
    position: relative;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid #4a4a4a;
}

.modal-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: #ddd;
}

.modal-close {
    background: none;
    border: none;
    color: #888;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    padding: 0 4px;
}

.modal-close:hover {
    color: #fff;
}

.export-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 10px 0;
    border-bottom: 1px solid #404040;
}

.export-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.exp-btn {
    width: 130px;
    flex-shrink: 0;
    padding: 7px 0;
    background: #5e5e5e;
    border: none;
    border-radius: 4px;
    color: #fff;
    cursor: pointer;
    font-size: 13px;
    font-family: inherit;
    transition: background 0.15s;
    text-align: center;
}

.exp-btn:hover {
    background: #0078d7;
}

.exp-btn:active {
    transform: translateY(1px);
}

.exp-desc {
    font-size: 12px;
    color: #aaa;
    line-height: 1.4;
}

body.light-mode {
    background: linear-gradient(135deg, #f5f5f5 0%, #ececec 100%);
    color: #111;
}

body.light-mode .main-container {
    background: #dcdcdc;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

body.light-mode .sidebar {
    background: #efefef;
}

body.light-mode .panel {
    background: #f7f7f7;
    box-shadow: inset 0 0 0 1px #d2d2d2;
}

body.light-mode .panel-title,
body.light-mode .axis-field span,
body.light-mode .file-card-label,
body.light-mode .exp-desc {
    color: #4c4c4c;
}

body.light-mode .sidebar-btn,
body.light-mode .exp-btn {
    background: #e1e1e1;
    color: #111;
    box-shadow: inset 0 0 0 1px #c4c4c4;
}

body.light-mode .sidebar-btn:hover,
body.light-mode .exp-btn:hover {
    background: #d3d3d3;
}

body.light-mode .axis-toggle,
body.light-mode .file-card-line,
body.light-mode .modal-header h2 {
    color: #111;
}

body.light-mode .axis-input {
    background: #ffffff;
    color: #111;
    border-color: #bbbbbb;
}

body.light-mode .axis-input:disabled {
    background: #eeeeee;
    color: #777;
}

body.light-mode .file-card {
    background: linear-gradient(180deg, #f1f1f1 0%, #e6e6e6 100%);
    border-color: #c8c8c8;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

body.light-mode .file-card-name,
body.light-mode .file-card-value,
body.light-mode .file-channel-chip,
body.light-mode .channel-tooltip pre {
    color: #111;
}

body.light-mode .file-card-close {
    background: #d6d6d6;
    color: #111;
}

body.light-mode .file-card-close:hover {
    background: #c44b4b;
    color: #fff;
}

body.light-mode .file-color-input {
    border-color: rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.65);
}

body.light-mode .file-color-input:hover,
body.light-mode .file-color-input:focus-visible {
    border-color: rgba(0, 0, 0, 0.7);
}

body.light-mode .file-channel-chip {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.12);
}

body.light-mode .channel-tooltip {
    background: rgba(250, 250, 250, 0.98);
    border-color: #bdbdbd;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.16);
}

body.light-mode .content-area,
body.light-mode .display-area {
    background: #fdfdfd;
}

body.light-mode #drop-zone.drag-over {
    background: rgba(0, 120, 215, 0.06);
}

body.light-mode .dz-icon,
body.light-mode .dz-main,
body.light-mode .dz-hint {
    color: #444;
}

body.light-mode #zoom-rect {
    border-color: rgba(40, 90, 160, 0.95);
    background: rgba(70, 130, 210, 0.12);
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

body.light-mode #error-box {
    background: #fff6f6;
    border-color: #cc7a7a;
    border-top-color: #d95c5c;
    color: #5a1111;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.16);
}

body.light-mode .error-box-close {
    color: #7a1a1a;
}

body.light-mode .error-box-close:hover,
body.light-mode .error-box-close:focus-visible {
    color: #000;
}

body.light-mode .modal-overlay {
    background: rgba(0, 0, 0, 0.18);
}

body.light-mode .modal-box {
    background: #fafafa;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.14);
}

body.light-mode .modal-header {
    border-bottom-color: #d3d3d3;
}

body.light-mode .modal-close {
    color: #444;
}

body.light-mode .modal-close:hover {
    color: #000;
}

body.light-mode .export-row {
    border-bottom-color: #d9d9d9;
}