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

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f5f5f5;
    --border-color: #eaeaea;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --accent: #0070f3;
    --accent-hover: #0051cc;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background: #f8f7f3;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background: #f8f7f3;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    height: 77px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;


}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.export-btn {
    background: #111;
    color: #fff;
    border: 1px solid #111;
    padding: 0.65rem 1.4rem;
    border-radius: 4px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    text-decoration: none;
    display: inline-block;

}

.export-btn:hover {
    background: #000;
    border-color: #000;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.export-btn:active {
    transform: translateY(0);
}

.main-content {
    display: flex;
    flex: 1;
    gap: 0;
    overflow: hidden;
}

.sidebar {
    width: 320px;
    background: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    padding: 2rem;
    overflow-y: auto;
    height: calc(100vh - 73px);
}

.sidebar-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin: 0;
}

.back-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.back-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-tertiary);
}

.control-section {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    transition: opacity 0.2s ease, max-height 0.3s ease;
}

.control-section:last-child {
    border-bottom: none;
}

.control-section.hidden {
    display: none;
}

.sidebar.edit-mode .control-section:not(.active) {
    display: none;
}

.sidebar.edit-mode .control-section.active {
    display: block;
}

.section-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
    text-transform: uppercase;
    opacity: 0.7;
}

.control-group {
    margin-bottom: 1.5rem;
}

.control-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.control-input {
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.875rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    transition: all 0.2s ease;
    cursor: pointer;
}

.control-input:hover {
    border-color: var(--text-tertiary);
}

.control-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.1);
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.slider {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-tertiary);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #111;
    cursor: pointer;
    transition: all 0.2s ease;
}

.slider::-webkit-slider-thumb:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #111;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.slider::-moz-range-thumb:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.slider-value {
    min-width: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.color-picker {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.color-swatch {
    width: 32px;
    height: 32px;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0;
    background: none;
    position: relative;
}

.color-swatch:hover {
    transform: scale(1.1);
    border-color: var(--text-primary);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.color-swatch.active {
    border-color: var(--text-primary);
    border-width: 3px;
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.1);
}

.color-swatch.active::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.preview-area {
    flex: 1;
    background: transparent;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 4rem 2rem 6rem;
    overflow-y: auto;
}

.preview-content {
    max-width: 1120px;
    width: 100%;
    background: transparent;
    padding: 4rem 4.5rem;
    border-radius: 0;
    box-shadow: none;
    border: none;
}

.preview-row {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 3rem;
    align-items: start;
}

.preview-row:last-child {
    margin-bottom: 0;
}

.preview-label {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #7a7468;
    font-weight: 600;
    padding-top: 0.25rem;
}

.preview-element-wrapper {
    position: relative;
}

.demo-kicker {
    font-size: 0.85rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: #7a7468;
    margin-bottom: 2.5rem;
    font-weight: 600;
}

.edit-btn {
    position: absolute;
    top: -0.5rem;
    right: -0.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    opacity: 0;
    pointer-events: none;
    box-shadow: var(--shadow-sm);
}

.preview-element-wrapper:hover .edit-btn {
    opacity: 1;
    pointer-events: all;
}

.edit-btn:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.preview-title {
    font-size: 48px;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.03em;
    outline: none;
    border: 2px solid transparent;
    border-radius: 4px;
    padding: 0.25rem;
    transition: border-color 0.2s ease;
    text-align: left;
}

.preview-title:focus {
    border-color: var(--accent);
    background: rgba(0, 112, 243, 0.05);
}

.preview-subtitle {
    font-size: 24px;
    font-weight: 400;
    line-height: 1.35;
    letter-spacing: -0.015em;
    outline: none;
    border: 2px solid transparent;
    border-radius: 4px;
    padding: 0.25rem;
    transition: border-color 0.2s ease;
    text-align: left;
}

.preview-subtitle:focus {
    border-color: var(--accent);
    background: rgba(0, 112, 243, 0.05);
}

.preview-paragraph {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: 0;
    outline: none;
    text-align: left;
    max-width: 780px;
    border: 2px solid transparent;
    border-radius: 4px;
    padding: 0.25rem;
    transition: border-color 0.2s ease;
}

.preview-paragraph:focus {
    border-color: var(--accent);
    background: rgba(0, 112, 243, 0.05);
}

/* Scrollbar styling */
.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

.preview-area::-webkit-scrollbar {
    width: 8px;
}

.preview-area::-webkit-scrollbar-track {
    background: transparent;
}

.preview-area::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.preview-area::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Responsive design */
@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        max-height: 50vh;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }

    .preview-area {
        padding: 2rem 1rem;
    }

    .preview-content {
        padding: 2rem;
    }

    .header {
        padding: 1rem;
    }
}