:root {
    /* Zinc Palette - Lighter/Easier on eyes */
    --bg-dark: #18181b;
    /* Zinc 900 */
    --bg-panel: #27272a;
    /* Zinc 800 */
    --bg-hover: #3f3f46;
    /* Zinc 700 */
    --border-main: #52525b;
    /* Zinc 600 */
    --border-subtle: #3f3f46;
    /* Zinc 700 */

    --text-main: #f4f4f5;
    /* Zinc 100 */
    --text-muted: #a1a1aa;
    /* Zinc 400 */
    --text-dim: #71717a;
    /* Zinc 500 */

    --accent: #fff;
    --accent-blue: #3b82f6;
    --accent-green: #22c55e;
    --accent-amber: #f59e0b;
    --accent-red: #ef4444;

    --font-ui: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-ui);
    height: 100vh;
    overflow: hidden;
    font-size: 13px;
}

.app-layout {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 320px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-main);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-main);
}

.sidebar-header h1 {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.version {
    font-size: 10px;
    background: var(--border-main);
    padding: 2px 4px;
    border-radius: 2px;
    color: var(--text-muted);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Panel Sections */
.panel-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.section-title {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border-subtle);
}

/* Forms */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

label {
    font-weight: 500;
    color: var(--text-muted);
    font-size: 12px;
}

input[type="text"],
select {
    background: #000;
    border: 1px solid var(--border-main);
    color: var(--text-main);
    padding: 8px 10px;
    font-family: var(--font-mono);
    font-size: 12px;
    border-radius: 0;
    /* Brutalist */
    outline: none;
    transition: border-color 0.2s;
}

input[type="text"]:focus,
select:focus {
    border-color: var(--text-muted);
}

.hint-line {
    font-size: 11px;
    color: var(--text-dim);
}

.accent-text {
    color: var(--accent-blue);
    font-weight: bold;
}

/* Custom Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input {
    display: none;
}

.checkbox-box {
    width: 14px;
    height: 14px;
    border: 1px solid var(--border-main);
    background: #000;
    position: relative;
    display: inline-block;
}

.checkbox-label input:checked+.checkbox-box {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
}

.checkbox-label input:checked+.checkbox-box::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 4px;
    width: 4px;
    height: 8px;
    border: solid black;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Tabs */
.tab-group {
    display: flex;
    border: 1px solid var(--border-main);
    margin-bottom: 8px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 6px;
    font-size: 12px;
    cursor: pointer;
    font-family: var(--font-ui);
}

.tab-btn.active {
    background: var(--border-main);
    color: var(--text-main);
}

.tab-content {
    display: none;
}

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

/* File Input */
.file-drop-area {
    border: 1px dashed var(--border-main);
    padding: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: rgba(255, 255, 255, 0.02);
}

.file-drop-area:hover {
    border-color: var(--text-muted);
    background: rgba(255, 255, 255, 0.04);
}

.file-drop-area input {
    display: none;
}

.file-info {
    margin-top: 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent-green);
    word-break: break-all;
}

/* Actions */
.actions-area {
    margin-top: auto;
    display: flex;
    gap: 10px;
}

.btn {
    flex: 1;
    border: none;
    padding: 10px;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 12px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: opacity 0.2s;
}

.btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--text-main);
    color: #000;
}

.btn-primary:not(:disabled):hover {
    background: #fff;
}

.btn-danger {
    background: #330505;
    color: var(--accent-red);
    border: 1px solid var(--accent-red);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-main);
    color: var(--text-muted);
    padding: 6px 12px;
    font-size: 11px;
}

.btn-outline:hover {
    border-color: var(--text-main);
    color: var(--text-main);
}

/* Stats */
.stats-panel {
    background: #000;
    border: 1px solid var(--border-main);
    padding: 12px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 24px;
}

.stat-row {
    display: flex;
    flex-direction: column;
}

.stat-row .label {
    font-size: 10px;
    color: var(--text-dim);
    font-weight: 700;
}

.stat-row .value {
    font-family: var(--font-mono);
    font-size: 16px;
    color: var(--text-main);
}

.value.error {
    color: var(--accent-red);
}

.value.success {
    color: var(--accent-green);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-dark);
}

.results-toolbar {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-main);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.progress-wrapper {
    flex: 1;
    max-width: 400px;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 11px;
    margin-bottom: 6px;
    color: var(--text-muted);
}

.progress-track {
    height: 4px;
    background: var(--border-subtle);
}

.progress-fill {
    height: 100%;
    background: var(--text-main);
    width: 0%;
    transition: width 0.2s;
}

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

/* Datagrid */
.datagrid-container {
    flex: 1;
    overflow-y: auto;
    position: relative;
}

.datagrid {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
}

.datagrid th {
    background: var(--bg-dark);
    position: sticky;
    top: 0;
    text-align: left;
    padding: 8px 16px;
    font-size: 11px;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border-main);
    z-index: 10;
}

.datagrid td {
    padding: 6px 16px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-muted);
}

.datagrid tr:hover td {
    background: var(--bg-hover);
    color: var(--text-main);
}

/* Utility classes for table */
.text-right {
    text-align: right;
}

.w-16 {
    width: 64px;
}

.w-24 {
    width: 96px;
}

.w-32 {
    width: 128px;
}

.w-auto {
    width: auto;
}

/* Status Colors */
.code-2xx {
    color: var(--accent-green);
}

.code-3xx {
    color: var(--accent-blue);
}

.code-4xx {
    color: var(--accent-amber);
}

.code-5xx {
    color: var(--accent-red);
}

/* Status Bar */
.status-bar {
    height: 28px;
    border-top: 1px solid var(--border-main);
    display: flex;
    align-items: center;
    padding: 0 16px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-dim);
    background: var(--bg-panel);
    gap: 16px;
}

.status-item span {
    color: var(--text-muted);
}

.flex-grow {
    flex: 1;
}

.hidden {
    display: none !important;
}

.mt-2 {
    margin-top: 8px;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(4px);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--bg-panel);
    border: 1px solid var(--accent-red);
    padding: 32px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.2);
}

.modal-content p {
    margin-bottom: 12px;
    color: var(--text-main);
    line-height: 1.5;
}