:root {
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #334155;
    --success: #10b981;
    --error: #ef4444;
    --system: #8b5cf6;
}

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

body {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: 20px;
    gap: 20px;
}

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

.header-content h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.back-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--primary);
}

.main-layout {
    display: flex;
    flex: 1;
    gap: 20px;
    overflow: hidden;
}

.sidebar {
    width: 320px;
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    border: 1px solid var(--border);
    overflow-y: auto;
}

.config-section h2 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
}

select,
input {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 10px 12px;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

select:focus,
input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.run-button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    margin-top: auto;
}

.button-group {
    margin-top: auto;
    display: flex;
    gap: 10px;
}

.button-group .run-button {
    margin-top: 0;
    flex: 2;
}

.run-button.secondary {
    flex: 1;
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.run-button.secondary:hover {
    background: rgba(59, 130, 246, 0.1);
}

.run-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--border);
    color: var(--text-muted);
    border-color: transparent;
}

.run-button:hover {
    background: var(--primary-hover);
}

.run-button:active {
    transform: scale(0.98);
}

.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow: hidden;
}

.panel {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.log-panel {
    height: 40%;
}

.preview-panel {
    flex: 1;
}

.panel-header {
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h3 {
    font-size: 0.9rem;
    font-weight: 600;
}

.text-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    padding: 4px 8px;
}

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

.log-container {
    flex: 1;
    padding: 12px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.8rem;
    overflow-y: auto;
    background: #000;
}

.log-entry {
    margin-bottom: 4px;
    border-left: 2px solid transparent;
    padding-left: 8px;
}

.log-entry.info {
    color: #ccc;
}

.log-entry.system {
    color: var(--system);
}

.log-entry.success {
    color: var(--success);
}

.log-entry.error {
    color: var(--error);
    border-left-color: var(--error);
}

.preview-info {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.table-wrapper {
    flex: 1;
    overflow: auto;
    background: var(--bg-dark);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

th {
    position: sticky;
    top: 0;
    background: var(--bg-card);
    text-align: left;
    padding: 10px 16px;
    border-bottom: 2px solid var(--border);
    color: var(--text-muted);
    white-space: nowrap;
}

td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.03);
}

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

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

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

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