/* =======================================================
   NavTools - Calcolatore PAC / PIC Style
   Stile coerente con l'architettura visiva di NavTools
   ======================================================= */

.tool-container {
    padding-top: 24px;
    padding-bottom: 48px;
}

.back-link {
    display: inline-flex;
    margin-bottom: 20px;
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
}

.back-link:hover,
.back-link:focus-visible {
    color: var(--primary-dark);
    text-decoration: underline;
}

.tool-header {
    max-width: 760px;
    margin: 0 auto 28px;
    text-align: center;
}

.tool-header .logo {
    width: 96px;
    max-width: 30vw;
    margin: 0 auto 14px;
}

h1 {
    margin: 0 0 8px;
    color: var(--primary);
    font-size: clamp(2rem, 4vw, 2.7rem);
    letter-spacing: 0;
}

.description {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}

/* -------------------------------------------------------
   Grid layout calcolatore
   ------------------------------------------------------- */

.calculator-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 1.2fr);
    gap: 20px;
    align-items: start;
}

.input-column,
.result-column {
    display: grid;
    gap: 20px;
}

/* -------------------------------------------------------
   Pannelli e Form
   ------------------------------------------------------- */

.panel,
.result-card {
    padding: 24px;
}

.panel h2 {
    margin: 0 0 18px;
    color: var(--primary);
    font-size: 1.2rem;
}

label,
legend {
    display: block;
    margin: 16px 0 6px;
    color: #263846;
    font-weight: 700;
}

label:first-child,
legend:first-child {
    margin-top: 0;
}

fieldset {
    margin: 0;
    padding: 0;
    border: 0;
}

.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 22px;
    margin-top: 8px;
}

.radio-group label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
}

.radio-group input {
    width: auto;
    min-height: auto;
    cursor: pointer;
}

input[type="number"],
select {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid #cddbd6;
    border-radius: 6px;
    background: #ffffff;
    color: var(--text);
    font: inherit;
}

input[type="number"]:focus,
select:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.15);
}

.field-note {
    margin: 6px 0 0;
    font-size: 0.82rem;
    color: var(--muted);
    line-height: 1.4;
}

/* -------------------------------------------------------
   Card Risultati
   ------------------------------------------------------- */

.result-card {
    text-align: center;
    border-top: 5px solid var(--accent);
}

#resultTitle {
    margin: 0 0 10px;
    color: var(--muted);
    font-weight: 700;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

#resultValue {
    min-height: 58px;
    color: var(--primary);
    font-size: clamp(2.1rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 6px;
}

#resultMessage {
    margin: 0;
    font-size: 0.9rem;
    min-height: 1.2em;
}

#resultMessage.error {
    color: var(--danger);
    font-weight: 600;
}

.result-details {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid #edf2f0;
    text-align: left;
}

.result-detail-line {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 10px;
    font-size: 0.95rem;
    color: var(--text);
}

.result-detail-line:last-child {
    margin-bottom: 0;
}

.detail-label {
    color: var(--muted);
}

.detail-val {
    font-weight: 700;
}

/* -------------------------------------------------------
   Stile del Grafico SVG
   ------------------------------------------------------- */

.chart-panel {
    display: flex;
    flex-direction: column;
}

.chart-container {
    width: 100%;
    background: #fcfdfe;
    border: 1px solid #e2eaf0;
    border-radius: 8px;
    padding: 12px 8px 8px;
    box-sizing: border-box;
}

#simulationChart {
    width: 100%;
    height: auto;
    display: block;
    overflow: visible;
}

.chart-legend {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid #edf2f0;
    font-size: 0.85rem;
    color: var(--text);
    font-weight: 600;
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.legend-color {
    width: 14px;
    height: 4px;
    border-radius: 2px;
}

.legend-invested {
    background-color: #0f4c81; /* primary */
}

.legend-gross {
    background-color: #237a4b; /* accent */
}

.legend-net {
    background-color: #f59e0b; /* warning/amber */
}

/* Elementi interni SVG */
.chart-grid-line {
    stroke: #e6edf2;
    stroke-width: 1;
    stroke-dasharray: 4 4;
}

.chart-axis-line {
    stroke: #b0c4de;
    stroke-width: 1.5;
}

.chart-axis-label {
    fill: var(--muted);
    font-size: 11px;
    font-family: inherit;
}

.chart-axis-title {
    fill: var(--primary);
    font-weight: 700;
    font-size: 12px;
}

.chart-path-invested {
    fill: none;
    stroke: #0f4c81;
    stroke-width: 2.5;
    stroke-linecap: round;
}

.chart-path-gross {
    fill: none;
    stroke: #237a4b;
    stroke-width: 3;
    stroke-linecap: round;
}

.chart-path-net {
    fill: none;
    stroke: #f59e0b;
    stroke-width: 2.5;
    stroke-dasharray: 6 4;
    stroke-linecap: round;
}

.chart-point {
    transition: r 0.15s ease;
    cursor: pointer;
}

.chart-point:hover {
    r: 6;
}

/* -------------------------------------------------------
   Sezione Confronto PIC vs PAC
   ------------------------------------------------------- */

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 16px;
}

.comparison-box {
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.comparison-box h3 {
    margin: 0 0 12px;
    font-size: 1rem;
    font-weight: 800;
}

.comparison-box ul {
    margin: 0;
    padding-left: 18px;
    font-size: 0.9rem;
    line-height: 1.6;
}

.comparison-box li {
    margin-bottom: 8px;
}

.comparison-box li:last-child {
    margin-bottom: 0;
}

.pic-box {
    background: #f0f4fa;
    border-color: #b3cae0;
}

.pic-box h3 {
    color: var(--primary);
}

.pac-box {
    background: #eef7f2;
    border-color: #b3d9c5;
}

.pac-box h3 {
    color: var(--accent);
}

/* -------------------------------------------------------
   Info e Disclaimer
   ------------------------------------------------------- */

.info-card {
    margin-top: 20px;
    padding: 24px;
    color: var(--muted);
}

.info-card h2 {
    margin: 0 0 16px;
    color: var(--primary);
    font-size: 1.1rem;
}

.info-card p {
    margin: 0 0 12px;
    font-size: 0.92rem;
    line-height: 1.6;
}

.info-card ul {
    margin: 0 0 12px;
    padding-left: 20px;
    font-size: 0.92rem;
    line-height: 1.6;
}

.info-card li {
    margin-bottom: 8px;
}

.info-card table {
    width: 100%;
    border-collapse: collapse;
}

.info-card td {
    padding: 11px 0;
    vertical-align: top;
    font-size: 0.93rem;
}

.info-card td:first-child {
    color: var(--muted);
}

.info-card td:last-child {
    text-align: right;
    font-weight: 700;
    color: var(--text);
}

.info-card tr:not(:last-child) {
    border-bottom: 1px solid #edf2f0;
}

.disclaimer-text {
    font-size: 0.88rem;
    line-height: 1.6;
    color: var(--muted);
    margin: 0;
}

/* -------------------------------------------------------
   Responsività
   ------------------------------------------------------- */

@media (max-width: 840px) {
    .calculator-layout {
        grid-template-columns: 1fr;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .tool-container {
        width: min(100% - 28px, 680px);
        padding-top: 18px;
    }
}

@media (max-width: 560px) {
    .panel,
    .result-card,
    .info-card {
        padding: 18px;
    }
}