/* --- 1. Variabili Globali e Reset --- */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

:root {
    --primary-color: #005A9C;      /* Blu Scuro */
    --secondary-color: #00A3E0;    /* Azzurro */
    --highlight-color: #28a745;    /* Verde */
    --coasting-color: #fd7e14;     /* Arancione */
    
    --background-color: #f8f9fa;
    --text-color: #343a40;
    --card-bg: #ffffff;
    --border-color: #dee2e6;
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 2rem 1rem;
}

/* --- 2. Layout Principale --- */
.calculator {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.calculator__header {
    background-color: var(--primary-color);
    color: white;
    padding: 2rem 2.5rem;
    text-align: center;
}
.calculator__header h1 { margin: 0; font-size: 2.2rem; }
.calculator__header p { margin: 0.5rem 0 0; opacity: 0.9; }

.calculator__main { padding: 2.5rem; }

h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

/* --- 3. Form --- */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.form-group label {
    font-weight: bold;
    margin-bottom: 0.5rem;
    font-size: 0.9em;
    display: block;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1em;
    box-sizing: border-box;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.form-group input:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(0, 163, 224, 0.2);
}

.calculator__button {
    display: block;
    width: 100%;
    padding: 1rem;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1.2em;
    font-weight: bold;
    cursor: pointer;
    margin-top: 2rem;
    transition: background-color 0.3s;
}
.calculator__button:hover { background-color: #007bb5; }

/* --- 4. Risultati --- */
.calculator__results-section { margin-top: 3rem; }

.summary-card {
    background-color: #f4f7f9;
    border-left: 5px solid var(--highlight-color);
    padding: 1.5rem;
    margin-bottom: 2.5rem;
    border-radius: 8px;
    text-align: center;
    font-size: 1.15em;
    line-height: 1.7;
}

.summary-card span {
    font-weight: bold;
    font-size: 1.2em;
    color: var(--highlight-color);
}
.summary-card .coasting-value {
    color: var(--coasting-color);
}
.summary-card .pac-value {
    color: var(--secondary-color);
}

.summary-card.not-found {
    border-left-color: #ffc107; /* Giallo Warning */
}
.summary-card.not-found span {
    color: #d69f00;
}


.chart-container { margin: 3rem 0; position: relative; height: 400px; }
.table-container { overflow-x: auto; }

.results-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    font-size: 0.95em;
}
.results-table th, .results-table td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    text-align: right;
}
.results-table th { background-color: var(--primary-color); color: white; text-align: center; }
.results-table tbody tr:nth-child(even) { background-color: #f8f9fa; }

.crossover-row {
    background-color: rgba(40, 167, 69, 0.15) !important;
    font-weight: bold;
}
.crossover-row td:first-child {
    position: relative;
}
/* Aggiunge un indicatore visivo per l'inizio del coasting */
.crossover-row td:first-child::before {
    content: '▶';
    color: var(--coasting-color);
    position: absolute;
    left: 5px;
    top: 50%;
    transform: translateY(-50%);
}