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

:root {
    --bg: #f5f5f5;
    --panel: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --muted-2: #9ca3af;
    --border: #e5e7eb;
    --btn-bg: #ffffff;
    --btn-hover: #f3f4f6;
    --accent: #2563eb;
    --accent-soft: rgba(37, 99, 235, 0.18);
    --focus: rgba(37, 99, 235, 0.25);
    --shadow: 0 12px 32px rgba(17, 24, 39, 0.10);
    --canvas-bg: #ffffff;
    --canvas-surface: #ffffff;
    --shape-stroke: #111827;
}

html.theme-dark {
    --bg: #0b1220;
    --panel: #0f172a;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --muted-2: #64748b;
    --border: rgba(148, 163, 184, 0.25);
    /* Слегка "цветной" темный фон вместо почти черного */
    --btn-bg: rgba(30, 41, 59, 0.75);   /* slate-800-ish */
    --btn-hover: rgba(148, 163, 184, 0.16);
    --accent: #60a5fa;
    --accent-soft: rgba(96, 165, 250, 0.22);
    --focus: rgba(96, 165, 250, 0.25);
    --shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
    --canvas-bg: #0f172a;
    --canvas-surface: rgba(15, 23, 42, 0.75);
    --shape-stroke: rgba(229, 231, 235, 0.75);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background:
        radial-gradient(900px 420px at 20% 0%, rgba(37, 99, 235, 0.18), transparent 55%),
        radial-gradient(700px 300px at 90% 10%, rgba(96, 165, 250, 0.12), transparent 45%),
        var(--bg);
    display: flex;
    height: 100vh;
    color: var(--text);
}

.sidebar {
    width: 240px;
    background: var(--panel);
    padding: 20px;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 26px;
}

.header {
    padding-bottom: 6px;
}

.header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
}

.header-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.2;
    letter-spacing: 0.2px;
    max-width: 140px;
}

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

.lang-switch {
    display: flex;
    gap: 6px;
}

.lang-btn {
    border: 1px solid var(--border);
    background: var(--btn-bg);
    color: var(--text);
    padding: 6px 8px;
    font-size: 11px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.15s ease;
    font-weight: 600;
    line-height: 1;
}

.lang-btn:hover {
    border-color: rgba(96, 165, 250, 0.7);
    background: var(--btn-hover);
    transform: translateY(-1px);
}

.lang-btn.active {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
}

.theme-toggle {
    width: 100%;
    max-width: 120px;
    border: 1px solid var(--border);
    background: var(--btn-bg);
    color: var(--text);
    padding: 8px 10px;
    font-size: 11px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.15s ease;
    font-weight: 650;
}

.theme-toggle:hover {
    background: var(--btn-hover);
    border-color: var(--accent-soft);
    transform: translateY(-1px);
}

.section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.color-picker {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
}

.color-input {
    width: 50px;
    height: 30px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background: none;
    padding: 0;
    transition: all 0.2s;
}

.color-input:hover {
    border-color: var(--accent);
    transform: scale(1.05);
}

.color-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--focus);
}

.color-picker label {
    font-size: 11px;
    color: var(--muted);
    font-weight: 500;
}

.color-swatch,
.icon-color-swatch,
.bg-color-swatch {
    width: 24px;
    height: 24px;
    border-radius: 2px;
    border: 2px solid var(--border);
    cursor: pointer;
    transition: all 0.2s;
    display: inline-block;
}

.color-swatch:hover,
.icon-color-swatch:hover,
.bg-color-swatch:hover {
    transform: scale(1.1);
    border-color: var(--muted);
}

.color-swatch.active,
.icon-color-swatch.active,
.bg-color-swatch.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--focus);
    transform: scale(1.05);
}

.shapes {
    display: flex;
    gap: 10px;
}

.shape-btn,
.bg-shape-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    background: var(--btn-bg);
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.shape-btn:hover,
.bg-shape-btn:hover {
    background: var(--btn-hover);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.shape-btn.active,
.bg-shape-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.shape-icon {
    font-size: 16px;
}

.export-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.format-btn {
    padding: 8px 12px;
    border: 1px solid var(--border);
    background: var(--btn-bg);
    color: var(--text);
    cursor: pointer;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s;
}

.format-btn:hover {
    background: var(--btn-hover);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.canvas-container {
    flex: 1;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
}

.canvas-wrapper {
    max-width: 600px ;
    width: 100% ;
    border-radius: 8px;
    box-shadow: var(--shadow);
    background: var(--canvas-surface);
    padding: 20px;
    overflow: hidden;
}

.controls {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.control-btn {
    padding: 8px 12px;
    border: 1px solid var(--border);
    background: var(--btn-bg);
    color: var(--text);
    cursor: pointer;
    border-radius: 4px;
    font-size: 12px;
    transition: all 0.2s;
}

.control-btn:hover {
    background: var(--btn-hover);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.slider {
    margin-top: 10px;
}

.slider input {
    width: 100%;
    margin: 5px 0;
}

.slider label {
    font-size: 11px;
    color: var(--muted);
    display: block;
    margin-bottom: 5px;
}

.info-text {
    font-size: 11px;
    color: var(--muted-2);
    line-height: 1.4;
    margin-top: 15px;
}

#fabricCanvas {
    border-radius: 8px;
    display: block;
}