* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root,
[data-theme="dark"] {
    --bg: #1a1a1a;
    --panel: #2a2a2a;
    --panel-2: #232323;
    --input-bg: #333;
    --border: #444;
    --text: #e0e0e0;
    --text-dim: #ccc;
    --text-muted: #777;
    --accent: #ff8c00;
    --accent-hover: #ffa733;
    --accent-text: #1a1a1a;
    --hover-selection: rgba(255, 140, 0, 0.25);
    --selected-bg: rgba(255, 140, 0, 0.45);
    --selected-point-bg: rgba(255, 140, 0, 0.6);
    --overlay-bg: rgba(0, 0, 0, 0.65);
    --modal-bg: #2a2a2a;
    --header-border: #3a3a3a;
    --code-bg: #1f1f1f;
    --code-border: #3a3a3a;
    --code-color: #ffb066;
    --ok: #22c55e;
    --hover-btn-bg: #3a3a3a;
    --point-hover: rgba(255, 140, 0, 0.35);
    --copied-bg: #22c55e;
    --preview-bg: #333;
    --modal-body-bg: #1f1f1f;
    --checkbox-bg: #3a3a3a;
    --sr-focus: #ffb066;
    --warning: #e0a020;
    --import-accent: #3b82f6;
    --import-accent-hover: #60a5fa;
    --import-accent-text: #ffffff;
}

[data-theme="light"] {
    --bg: #f4f4f6;
    --panel: #ffffff;
    --panel-2: #f0f0f2;
    --input-bg: #ffffff;
    --border: #d0d0d5;
    --text: #1a1a1a;
    --text-dim: #444;
    --text-muted: #777;
    --accent: #d97706;
    --accent-hover: #f59e0b;
    --accent-text: #ffffff;
    --hover-selection: rgba(217, 119, 6, 0.18);
    --selected-bg: rgba(217, 119, 6, 0.35);
    --selected-point-bg: rgba(217, 119, 6, 0.5);
    --overlay-bg: rgba(0, 0, 0, 0.45);
    --modal-bg: #ffffff;
    --header-border: #e2e2e6;
    --code-bg: #f0f0f2;
    --code-border: #d0d0d5;
    --code-color: #a04a00;
    --ok: #16a34a;
    --hover-btn-bg: #ececef;
    --point-hover: rgba(217, 119, 6, 0.28);
    --copied-bg: #16a34a;
    --preview-bg: #f7f7f9;
    --modal-body-bg: #ececef;
    --checkbox-bg: #ececef;
    --sr-focus: #a04a00;
    --warning: #c07000;
    --import-accent: #2563eb;
    --import-accent-hover: #3b82f6;
    --import-accent-text: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    padding: 20px;
    min-height: 100vh;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    min-height: 100vh;
}

.header-row {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    padding-right: 60px;
}

.header-row h1 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--accent);
    line-height: 1;
}

.header-controls {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    gap: 10px;
    flex-wrap: nowrap;
}

.top-control {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 0 0 auto;
}

.top-control-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.top-control select {
    padding: 4px 6px;
    font-size: 0.8rem;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    min-width: 100px;
    width: auto;
}

.help-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 5;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    background: transparent;
    color: var(--accent);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.15s ease, color 0.15s ease;
}

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

.help-btn:focus-visible {
    outline: 2px solid var(--sr-focus);
    outline-offset: 2px;
}

.main-grid {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 20px;
}

.panel {
    background: var(--panel);
    border-radius: 8px;
    padding: 20px;
}

.control-group {
    margin-bottom: 15px;
}

label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 5px;
    color: var(--text-dim);
}

textarea,
input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 8px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
}

textarea:focus,
input:focus,
select:focus {
    outline: none;
    border-color: var(--accent);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    box-shadow: 0 0 0 2px var(--sr-focus);
}

.color-picker-group {
    display: flex;
    gap: 8px;
}

.color-picker-group input[type="color"] {
    width: 40px;
    height: 40px;
    padding: 2px;
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    background: var(--input-bg);
    flex: 0 0 auto;
}

.color-picker-group input[type="text"] {
    flex: 1;
    min-width: 0;
}

.range-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.range-group input[type="range"] {
    flex: 1;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    -webkit-appearance: none;
    appearance: none;
}

.range-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
}

.range-group input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
}

.range-group span {
    min-width: 30px;
    text-align: center;
    color: var(--accent);
}

.formatting-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label:has(input:checked) {
    border-color: var(--accent);
    background: var(--checkbox-bg);
}

.checkbox-label input[type="checkbox"] {
    accent-color: var(--accent);
    cursor: pointer;
}

.checkbox-inline {
    display: inline-flex;
    width: auto;
}

.preview-wrap {
    position: relative;
    margin-bottom: 20px;
    display: block;
    min-height: 80px;
}

.preview {
    display: block;
    width: 100%;
    border-radius: 4px;
    background: var(--preview-bg);
    cursor: text;
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
    touch-action: none;
}

.preview:focus-visible {
    outline: 2px solid var(--sr-focus);
    outline-offset: 2px;
}

.sr-mirror {
    position: fixed !important;
    top: -9999px !important;
    left: -9999px !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
    pointer-events: none !important;
    user-select: none !important;
    -webkit-user-select: none !important;
}

.preview-expand-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text-dim);
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.15s ease, color 0.15s ease;
    z-index: 6;
}

.preview-expand-btn:hover {
    background: var(--accent);
    color: var(--accent-text);
    border-color: var(--accent);
}

.preview-expand-btn:focus-visible {
    outline: 2px solid var(--sr-focus);
    outline-offset: 2px;
}

.preview-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 90;
    opacity: 1;
    transition: opacity 0.15s ease;
}

.preview-overlay.hidden {
    display: none;
}

.preview-modal {
    background: var(--modal-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    width: 100%;
    max-width: 1200px;
    height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.preview-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 18px;
    border-bottom: 1px solid var(--header-border);
    font-size: 0.95rem;
    color: var(--accent);
    font-weight: 600;
}

.preview-modal-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.preview-zoom-label {
    font-size: 0.8rem;
    color: var(--text-dim);
    font-weight: 400;
    margin: 0;
}

.preview-modal-controls input[type="range"] {
    width: 140px;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    -webkit-appearance: none;
    appearance: none;
}

.preview-modal-controls input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
}

.preview-modal-controls input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
}

.preview-modal-controls span {
    min-width: 40px;
    text-align: center;
    color: var(--accent);
    font-weight: 400;
    font-size: 0.85rem;
}

.preview-modal-body {
    flex: 1;
    overflow: hidden;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--modal-body-bg);
    cursor: grab;
    position: relative;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.preview-modal-body.panning {
    cursor: grabbing;
}

.preview-large {
    display: block;
    min-width: 60%;
    max-width: 100%;
    border-radius: 6px;
    background: var(--preview-bg);
    will-change: transform;
    cursor: text;
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
    touch-action: none;
}

.preview-large:focus-visible {
    outline: 2px solid var(--sr-focus);
    outline-offset: 2px;
}

.preview-modal-editors {
    padding: 10px 18px;
    border-top: 1px solid var(--header-border);
    max-height: 40vh;
    overflow-y: auto;
}

.preview-modal-editors:empty {
    display: none;
}

.preview-modal-footer {
    padding: 10px 18px;
    border-top: 1px solid var(--header-border);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
}

.output-section {
    position: relative;
    margin-top: 15px;
}

.output-section label {
    display: inline-block;
    margin-bottom: 5px;
}

.output-actions {
    position: absolute;
    right: 0;
    top: 0;
    display: flex;
    gap: 6px;
    align-items: center;
}

.output-actions .copy-btn {
    position: static;
}

.action-btn {
    padding: 4px 10px;
    background: var(--import-accent);
    color: var(--import-accent-text);
    border: 1px solid var(--import-accent);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    font-family: inherit;
    font-weight: 600;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.action-btn:hover {
    background: var(--import-accent-hover);
    border-color: var(--import-accent-hover);
}

.action-btn:focus-visible {
    outline: 2px solid var(--sr-focus);
    outline-offset: 2px;
}

.copy-btn {
    position: absolute;
    right: 0;
    top: 0;
    padding: 4px 10px;
    background: var(--input-bg);
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    font-family: inherit;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.copy-btn:hover {
    background: var(--accent);
    color: var(--accent-text);
    border-color: var(--accent);
}

.copy-btn.copied {
    background: var(--copied-bg);
    color: #fff;
    border-color: var(--copied-bg);
}

.copy-btn:focus-visible {
    outline: 2px solid var(--sr-focus);
    outline-offset: 2px;
}

textarea[readonly] {
    min-height: 60px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.8rem;
    resize: vertical;
}

textarea.has-warning {
    border-color: var(--warning);
    box-shadow: 0 0 0 1px var(--warning);
}

.credit {
    position: absolute;
    bottom: 0;
    right: 0;
    color: var(--accent);
    font-size: 0.9rem;
    padding: 10px;
}

#solidControls.hidden {
    display: none;
}

#gradientControls {
    display: block;
}

.char-editor {
    margin-top: 12px;
    padding: 10px 12px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 6px;
}

.char-editor.hidden {
    display: none;
}

.char-editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 8px;
}

.char-editor-row {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
}

.char-editor-row.char-format-row {
    flex-wrap: wrap;
}

.char-format-check {
    padding: 4px 8px;
    min-width: 32px;
    justify-content: center;
}

.char-editor-mini-label {
    font-size: 0.75rem;
    color: var(--text-dim);
    min-width: 70px;
    margin: 0;
}

.char-editor .range-group {
    flex: 1;
}

.char-editor-row input[type="color"] {
    width: 40px;
    height: 36px;
    padding: 2px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--input-bg);
    cursor: pointer;
    flex: 0 0 auto;
}

.char-editor-row input[type="text"] {
    flex: 1;
    padding: 6px 8px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 0.85rem;
    min-width: 0;
}

.char-editor-row input[type="text"]::placeholder {
    color: var(--text-muted);
}

.char-editor-row select {
    flex: 1;
}

.char-editor-row select option {
    background: var(--input-bg);
    color: var(--text);
}

.char-editor-row .mini-btn {
    flex: 1;
}

.mini-btn {
    padding: 6px 10px;
    background: var(--accent);
    color: var(--accent-text);
    border: 1px solid var(--accent);
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    font-weight: 600;
    font-family: inherit;
    transition: background-color 0.15s ease, color 0.15s ease;
}

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

.mini-btn.ghost {
    background: var(--input-bg);
    color: var(--text-dim);
    border: 1px solid var(--border);
    font-weight: 400;
}

.mini-btn.ghost:hover {
    background: var(--hover-btn-bg);
    color: var(--accent);
    border-color: var(--accent);
}

.mini-btn:focus-visible {
    outline: 2px solid var(--sr-focus);
    outline-offset: 2px;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    padding: 0 4px;
    font-family: inherit;
}

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

.icon-btn:focus-visible {
    outline: 2px solid var(--sr-focus);
    outline-offset: 2px;
}

.help-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 100;
    opacity: 1;
    transition: opacity 0.15s ease;
}

.help-overlay.hidden {
    display: none;
}

.help-modal {
    background: var(--modal-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    width: 100%;
    max-width: 560px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    animation: helpPop 0.15s ease-out;
}

@keyframes helpPop {
    from {
        transform: scale(0.96);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.help-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    border-bottom: 1px solid var(--header-border);
}

.help-header h2 {
    font-size: 1.05rem;
    color: var(--accent);
    margin: 0;
}

.help-body {
    padding: 14px 18px 20px;
    overflow-y: auto;
}

.help-section {
    margin-bottom: 16px;
}

.help-section:last-child {
    margin-bottom: 0;
}

.help-section h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--accent);
    margin-bottom: 6px;
    font-weight: 600;
}

.help-section ul {
    list-style: disc;
    padding-left: 20px;
    margin: 0;
}

.help-section li {
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text);
    margin-bottom: 3px;
}

.help-section code {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 3px;
    padding: 1px 5px;
    font-size: 0.78rem;
    color: var(--code-color);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.help-section b {
    color: var(--text);
}

.import-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 95;
    opacity: 1;
    transition: opacity 0.15s ease;
}

.import-overlay.hidden {
    display: none;
}

.import-modal {
    background: var(--modal-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    width: 100%;
    max-width: 720px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    animation: helpPop 0.15s ease-out;
    overflow: hidden;
}

.import-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    border-bottom: 1px solid var(--header-border);
}

.import-header h2 {
    font-size: 1.05rem;
    color: var(--import-accent);
    margin: 0;
}

.import-body {
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
}

.import-label {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin: 0;
}

.import-body textarea {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.82rem;
    line-height: 1.5;
    min-height: 220px;
    resize: vertical;
    white-space: pre;
    overflow-wrap: normal;
    overflow-x: auto;
}

.import-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-dim);
    cursor: pointer;
    user-select: none;
    margin: 0;
}

.import-checkbox-label input[type="checkbox"] {
    width: auto;
    accent-color: var(--import-accent);
    cursor: pointer;
}

.import-warnings {
    font-size: 0.78rem;
    color: var(--warning);
    min-height: 1em;
    white-space: pre-wrap;
}

.import-warnings:empty {
    display: none;
}

.import-footer {
    padding: 12px 18px;
    border-top: 1px solid var(--header-border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.import-footer .mini-btn.ghost {
    background: var(--input-bg);
    color: var(--text-dim);
    border: 1px solid var(--border);
    font-weight: 400;
}

.import-footer .mini-btn.ghost:hover {
    background: var(--hover-btn-bg);
    color: var(--accent);
    border-color: var(--accent);
}

#importConfirm {
    background: var(--import-accent);
    color: var(--import-accent-text);
    border-color: var(--import-accent);
}

#importConfirm:hover {
    background: var(--import-accent-hover);
    border-color: var(--import-accent-hover);
}

#defaultioControls,
#defaultioGroupingGroup,
#defaultioStepTimeGroup,
#defaultioStepFreqGroup,
#defaultioStyleTimeGroup {
    border-left: 2px solid var(--accent);
    padding-left: 10px;
    margin-left: -2px;
}

.presets-group {
    border-left: 2px solid var(--accent);
    padding-left: 10px;
    margin-left: -2px;
}

.presets-row {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    align-items: center;
}

.presets-row select {
    flex: 1;
    min-width: 0;
}

.presets-row .mini-btn {
    white-space: nowrap;
    flex: 0 0 auto;
}

.advanced-only.hidden-for-mode {
    display: none !important;
}

[dir="rtl"] .header-row {
    padding-right: 60px;
    padding-left: 0;
}

[dir="rtl"] .help-btn {
    right: auto;
    left: 20px;
}

[dir="rtl"] .credit {
    right: auto;
    left: 0;
}

[dir="rtl"] .copy-btn {
    right: auto;
    left: 0;
}

[dir="rtl"] .output-actions {
    right: auto;
    left: 0;
}

[dir="rtl"] .output-actions .copy-btn {
    right: auto;
    left: auto;
}

[dir="rtl"] .import-footer {
    justify-content: flex-start;
}

[dir="rtl"] #defaultioControls,
[dir="rtl"] #defaultioGroupingGroup,
[dir="rtl"] #defaultioStepTimeGroup,
[dir="rtl"] #defaultioStepFreqGroup,
[dir="rtl"] #defaultioStyleTimeGroup,
[dir="rtl"] .presets-group {
    border-left: none;
    border-right: 2px solid var(--accent);
    padding-left: 0;
    padding-right: 10px;
    margin-left: 0;
    margin-right: -2px;
}

[dir="rtl"] .preview-expand-btn {
    right: auto;
    left: 8px;
}

@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    .header-row {
        padding-right: 0;
        gap: 10px;
    }

    .header-controls {
        flex-wrap: wrap;
    }

    .help-btn {
        top: 12px;
        right: 12px;
    }

    .main-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .panel {
        padding: 14px;
    }

    .preview-modal {
        height: 95vh;
        border-radius: 6px;
    }

    .preview-modal-body {
        padding: 20px;
    }

    .preview-large {
        min-width: 90%;
    }

    .preview-modal-controls input[type="range"] {
        width: 90px;
    }

    .credit {
        position: static;
        text-align: right;
        padding: 14px 0 0;
    }

    .char-editor-row {
        flex-wrap: wrap;
    }

    .import-modal {
        max-width: 100%;
        height: 95vh;
        border-radius: 6px;
    }

    .import-body {
        padding: 12px 14px;
    }

    .import-body textarea {
        min-height: 160px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}