:root {
    --bg: #fff;
    --text: #333;
    --border: #333;
    --accent: #4caf50;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

body {
    margin: 0;
    padding: 20px;
    font-family: system-ui, -apple-system, sans-serif;
    background-color: transparent;
    color: var(--text);
}

.applet-wrapper {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.applet-header h2 {
    margin: 0;
    font-size: 1.5rem;
}

.applet-header p {
    margin: 5px 0 0;
    color: #666;
    font-size: 0.9rem;
}

/* Tabs */
.tabs-container {
    border: 2px solid var(--border);
    border-radius: 4px;
    box-shadow: 4px 4px 0px var(--border);
    background: #fff;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.tabs-header {
    display: flex;
    background: #f0f0f0;
    border-bottom: 2px solid var(--border);
}

.tab-btn {
    padding: 12px 24px;
    border: none;
    background: none;
    font-family: var(--font-mono);
    font-weight: bold;
    cursor: pointer;
    border-right: 2px solid var(--border);
    transition: background 0.2s;
    color: #666;
}

.tab-btn:hover {
    background: #e0e0e0;
}

.tab-btn.active {
    background: #fff;
    color: var(--text);
    box-shadow: inset 0 -4px 0 var(--accent);
}

.tab-content {
    display: none;
    padding: 20px;
    height: 450px;
    overflow-y: auto;
}

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

/* Input Section */
.controls {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    font-size: 0.8rem;
    color: #666;
    text-transform: uppercase;
    padding-bottom: 8px;
    border-bottom: 2px solid #eee;
}

td {
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
}

input, select {
    padding: 6px 10px;
    border: 2px solid var(--border);
    border-radius: 4px;
    background: #fff;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

button {
    cursor: pointer;
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 4px;
    padding: 6px 12px;
    font-weight: bold;
    box-shadow: 2px 2px 0px var(--border);
    transition: all 0.1s;
}

button:hover {
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0px var(--border);
}

button:active {
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0px var(--border);
}

/* Gantt */
.gantt-container {
    width: 100%;
    height: 350px;
    overflow-y: auto;
}

#gantt-canvas {
    width: 100%;
}

/* Metrics Table */
.metrics-table {
    width: 100%;
}

.metrics-table th {
    background: #fafafa;
    padding: 12px;
}

.metrics-table td {
    padding: 12px;
    font-family: var(--font-mono);
}

.metrics-summary {
    display: flex;
    gap: 20px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px dashed #eee;
}

.summary-card {
    flex: 1;
    border: 2px solid var(--border);
    padding: 15px;
    border-radius: 4px;
    background: #f9fff9;
}

.summary-label {
    font-size: 0.7rem;
    color: #666;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.summary-value {
    font-size: 1.5rem;
    font-weight: bold;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

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