:root {
    --bg-dark: #f0f0f0;
    --bg-panel: #ffffff;
    --border-color: #e0e0e0;
    --text-primary: #333333;
    --text-secondary: #666666;
    --accent: #000000;
    --accent-hover: #333333;
    --input-bg: #ffffff;
    --chrome-bg: #dee1e6;
    --chrome-tab-active: #ffffff;
    --radius: 8px;
    --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-stack);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100%;
}

.preview-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
    background-color: var(--chrome-bg);
    padding: 0;
}

.chrome-header-bg {
    background: var(--chrome-bg);
    padding-top: 8px;
    padding-left: 8px;
    padding-right: 8px;
    display: flex;
    align-items: flex-end;
}

.chrome-tab-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.chrome-tab {
    background: transparent;
    padding: 8px 16px;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    color: #5f6368;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    width: 200px;
}

.chrome-tab.active {
    background: #fff;
    color: #202124;
}

.chrome-tab.active::before,
.chrome-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    width: 8px;
    height: 8px;
}

.tab-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tab-close {
    cursor: default;
}

.chrome-tab:hover .tab-close {
    opacity: 1;
}

.chrome-new-tab {
    color: #5f6368;
    padding: 6px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: default;
}

.chrome-new-tab:hover {
    background: rgba(0, 0, 0, 0.06);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 0 8px;
}

.preview-header h2 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.preview-actions {
    display: flex;
    gap: 8px;
}

.action-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-btn:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

.preview-frame-container {
    flex: 1;
    background: #fff;
    position: relative;
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: #fff;
}

.editor-pane {
    width: 350px;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-panel);
    overflow-y: hidden;
    padding: 0;
}

.editor-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-panel);
}

.tab-btn {
    flex: 1;
    padding: 16px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--text-primary);
    border-bottom-color: var(--accent);
}

.tab-content {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.tab-content.active {
    display: block;
}

.editor-header {
    margin-bottom: 24px;
}

.editor-header h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.editor-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.editor-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

input[type="text"],
textarea {
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 12px;
    color: var(--text-primary);
    font-family: var(--font-stack);
    font-size: 14px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    width: 100%;
}

input[type="text"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--text-primary);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

.text-btn {
    background: none;
    border: none;
    color: var(--accent);
    font-size: 12px;
    cursor: pointer;
    align-self: flex-start;
    padding: 4px 0;
    margin-top: 4px;
}

.text-btn:hover {
    text-decoration: underline;
}

::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: #30363d;
    border-radius: 4px;
}

.share-options {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.share-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.share-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.share-row {
    display: flex;
    width: 100%;
    gap: 8px;
}

.primary-btn,
.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 6px;
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    height: 40px;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-stack);
}

.primary-btn:hover {
    color: var(--text-primary);
    background-color: #f5f5f5;
}

.icon-btn:hover {
    color: var(--text-primary);
    background-color: #f5f5f5;
}

.primary-btn {
    width: 100%;
}

.icon-btn {
    color: var(--text-secondary);
    padding: 10px;
    width: 40px;
    flex: 0 0 auto;
}

::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #bbb;
}

@media (orientation: portrait) {
    body {
        height: 100dvh;
        width: 100vw;
        overflow: hidden;
        padding-bottom: env(safe-area-inset-bottom);
    }

    .app-container {
        flex-direction: column;
    }

    .preview-pane {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .editor-pane {
        width: 100%;
        flex: 1;
    }
}