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

:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #1a1a1a;
    --bg-card-hover: #252525;
    --accent-primary: #ffffff;
    --accent-secondary: #cccccc;
    --accent-success: #10b981;
    --accent-danger: #ef4444;
    --text-primary: #e2e8f0;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --border-color: #333333;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 20px rgba(255, 255, 255, 0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 2rem;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 300;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-color);
    background: var(--bg-card-hover);
}

.output-card {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-hover) 100%);
}

.highlight-card {
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-glow);
}

/* Input Styles */
.input-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.input-table thead {
    background: var(--bg-secondary);
}

.input-table th {
    padding: 0.75rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

.input-table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.input-table tbody tr:hover {
    background: var(--bg-secondary);
}

.input-field {
    width: 100%;
    padding: 0.625rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
    background: var(--bg-card);
}

/* Remove number input arrows */
.input-field[type="number"]::-webkit-outer-spin-button,
.input-field[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.input-field[type="number"] {
    -moz-appearance: textfield;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.input-group label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

@media (max-width: 768px) {
    .input-row {
        grid-template-columns: 1fr;
    }
}

/* Output Styles */
.output-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.output-table thead {
    background: var(--bg-secondary);
}

.output-table th {
    padding: 0.75rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

.output-table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.output-table tbody tr:hover {
    background: var(--bg-secondary);
}

.metric-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-top: 1rem;
}

.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

@media (max-width: 768px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
}

.metric-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border-left: 3px solid var(--border-color);
    transition: all 0.2s ease;
}

.metric-item:hover {
    transform: translateX(4px);
    border-left-color: var(--accent-primary);
}

.metric-item.highlight {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(255, 255, 255, 0.05) 100%);
    border-left-color: var(--accent-success);
}

.metric-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
}

.metric-item.highlight .metric-value {
    color: var(--accent-success);
    font-size: 1.75rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    .card {
        padding: 1rem;
    }

    .input-table, .output-table {
        font-size: 0.85rem;
    }

    .input-table th,
    .input-table td,
    .output-table th,
    .output-table td {
        padding: 0.5rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 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);
}