:root {
    --ncsu-red: #CC0000;
    --ncsu-red-hover: #A30000;
    --text-main: #1a1a1a;
    --text-muted: #757575;
    --bg-light: #f9f9f9;
    --border-color: #e5e5e5;
    --font-stack: 'Montserrat', 'Helvetica Neue', Arial, sans-serif;

}

body {
    font-family: var(--font-stack);
    background-color: transparent;
    color: var(--text-main);
    margin: 0;
    padding: 10px;
    -webkit-font-smoothing: antialiased;
}

.calc-container {
    max-width: 600px;
    margin: 0 auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 0px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-color);
}

.calc-title {
    font-size: 20px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-main);
    margin-bottom: 25px;
    text-align: center;
    border-bottom: 2px solid var(--text-main);
    padding-bottom: 15px;
}

.form-row {
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 8px;
}

select, input[type="number"] {
    font-family: var(--font-stack);
    width: 100%;
    padding: 14px 12px;
    box-sizing: border-box;
    border: 1px solid var(--border-color);
    background-color: var(--bg-light);
    color: var(--text-main);
    font-size: 15px;
    border-radius: 0px;
    transition: all 0.2s ease-in-out;
}

input[type="text"] {
    font-family: var(--font-stack);
    width: 100%;
    padding: 14px 12px;
    box-sizing: border-box;
    border: 1px solid var(--border-color);
    background-color: var(--bg-light);
    color: var(--text-main);
    font-size: 15px;
    border-radius: 0px;
    transition: all 0.2s ease-in-out;
}

.time-inputs {
    display: flex;
    gap: 12px;
}

.time-field {
    flex: 1;
}

.time-field label {
    font-size: 9px;
    margin-top: 4px;
    text-align: center;
}

button.calc-btn {
    font-family: var(--font-stack);
    width: 100%;
    background-color: var(--ncsu-red);
    color: #ffffff;
    border: none;
    padding: 16px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    cursor: pointer;
    margin-top: 10px;
    transition: all 0.2s ease-in-out;
}

button.calc-btn:hover {
    background-color: var(--ncsu-red-hover);
}

.results-section {
    margin-top: 35px;
    display: none;
    animation: fadeIn 0.4s ease-in-out forwards;
}

.vdot-banner {
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 20px;
    padding: 10px;
    background: var(--bg-light);
    border-left: 3px solid var(--ncsu-red);
}

.vdot-banner strong {
    color: var(--ncsu-red);
    font-size: 16px;
    margin-left: 5px;
}

table.pace-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

table.pace-table th {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    border-bottom: 2px solid var(--text-main);
    padding: 10px 6px;
    text-align: left;
}

table.pace-table td {
    padding: 14px 6px;
    font-size: 14px;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
}

table.pace-table tr:last-child td {
    border-bottom: none;
}

table.pace-table td.zone-title {
    font-weight: 600;
}

table.pace-table td.pace-value {
    font-weight: 700;
    color: var(--ncsu-red);
    text-align: right;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Mobile Optimization */
@media (max-width: 480px) {
    .calc-wrapper { padding: 20px; }
    table.pace-table td { font-size: 13px; padding: 12px 4px; }
}