:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e8e8e8;
    --bg-hover: #e0e0e0;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --border-color: #d0d0d0;
    --accent-color: #4a90e2;
    --accent-hover: #357abd;
    --success-color: #4caf50;
    --error-color: #f44336;
    --warning-color: #ff9800;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;
}

[data-theme="dark"] {
    --bg-primary: #1e1e1e;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3a3a3a;
    --bg-hover: #404040;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

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

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

/* Top Bar */
.top-bar {
    height: 50px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.app-title {
    font-size: 18px;
    font-weight: 600;
}

.top-bar-right {
    display: flex;
    gap: 10px;
}

/* Layout */
.app-container {
    display: flex;
    height: calc(100vh - 50px);
}

.left-panel {
    width: 300px;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.center-panel {
    flex: 1;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.right-panel {
    width: 500px;
    background: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

/* Tabs */
.tabs {
    display: flex;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 12px 20px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.tab-btn:hover {
    background: var(--bg-hover);
}

.tab-btn.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    font-weight: 500;
}

.tab-content {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: 15px;
}

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

/* Buttons */
.btn {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-primary);
    transition: all 0.2s;
}

.btn:hover {
    background: var(--bg-hover);
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-icon {
    padding: 8px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-send {
    padding: 8px 32px;
    font-weight: 500;
}

/* URL Bar */
.url-bar {
    display: flex;
    gap: 10px;
    padding: 15px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.method-select {
    width: 110px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
}

.url-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
}

.url-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Request Options */
.request-options {
    display: flex;
    gap: 15px;
    align-items: center;
    padding: 10px 15px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.timeout-label {
    display: flex;
    align-items: center;
    gap: 6px;
}

.timeout-label input {
    width: 80px;
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Request Builder */
.request-builder {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Body Mode Tabs */
.body-mode-tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 10px;
}

.body-mode-btn {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    color: var(--text-secondary);
}

.body-mode-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.body-content {
    display: none;
}

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

.raw-textarea {
    width: 100%;
    height: 300px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 13px;
    resize: vertical;
}

.hint {
    color: var(--text-secondary);
    font-size: 13px;
    padding: 10px;
}

/* Key-Value Editor */
.kv-editor {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 10px;
}

.kv-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.kv-row input[type="text"],
.kv-row input[type="file"] {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
}

.kv-row .btn-remove {
    padding: 6px 10px;
    background: var(--error-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

/* Auth Content */
.auth-content {
    display: none;
    padding: 10px 0;
}

.auth-content.active {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.auth-content label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
}

.auth-content .input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
}

/* Response Viewer */
.response-viewer {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.response-status {
    padding: 12px 15px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
}

.status-badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 12px;
}

.status-badge.success {
    background: var(--success-color);
    color: white;
}

.status-badge.error {
    background: var(--error-color);
    color: white;
}

.response-meta {
    color: var(--text-secondary);
    font-size: 12px;
}

.body-view-btn {
    padding: 6px 12px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    color: var(--text-secondary);
}

.body-view-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.response-content {
    display: none;
    padding: 15px;
    overflow: auto;
    height: 100%;
}

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

.response-content pre {
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Headers Table */
.headers-table {
    width: 100%;
}

.headers-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.headers-table th,
.headers-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.headers-table th {
    background: var(--bg-secondary);
    font-weight: 600;
}

/* Toolbar */
.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    align-items: center;
}

.presets-select,
.raw-type-select,
.auth-type-select,
.env-selector,
.codegen-language {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
}

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

.modal-overlay.active {
    display: block;
}

.modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    width: 500px;
    max-height: 80vh;
    overflow: hidden;
    z-index: 1000;
}

.modal.active {
    display: flex;
    flex-direction: column;
}

.modal-large {
    width: 700px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.code-output {
    background: var(--bg-secondary);
    padding: 15px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.5;
    overflow-x: auto;
    margin-top: 10px;
}

/* Tree */
.tree {
    font-size: 13px;
}

.tree-item {
    padding: 8px 10px;
    cursor: pointer;
    border-radius: 4px;
    margin: 2px 0;
}

.tree-item:hover {
    background: var(--bg-hover);
}

.tree-item.active {
    background: var(--accent-color);
    color: white;
}

/* Responsive */
@media (max-width: 1200px) {
    .left-panel {
        width: 250px;
    }
    .right-panel {
        width: 400px;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    .left-panel,
    .right-panel {
        width: 100%;
        border: none;
        border-bottom: 1px solid var(--border-color);
    }
}

/* JSON Tree */
.json-tree {
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.6;
}

.json-tree-node {
    margin-left: 20px;
}

.json-tree-key {
    color: #881391;
    font-weight: 500;
}

.json-tree-string {
    color: #c41a16;
}

.json-tree-number {
    color: #1c00cf;
}

.json-tree-boolean {
    color: #0d22aa;
}

.json-tree-null {
    color: #808080;
}

.json-tree-toggle {
    cursor: pointer;
    user-select: none;
    color: var(--text-secondary);
    margin-right: 5px;
}

.json-tree-collapsed {
    color: var(--text-secondary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}