/* ====================================================
   ZeroUno Modello 231 - Frontend Portal UI
   ==================================================== */

.zu231-portal {
    --zu231-bg: #f4f7f4;
    --zu231-bg-deep: #edf3ed;
    --zu231-card: #ffffff;
    --zu231-border: #cedbcf;
    --zu231-border-strong: #9bb99e;
    --zu231-accent: #1c5f3e;
    --zu231-accent-hover: #12492f;
    --zu231-accent-soft: #e8f1ea;
    --zu231-secondary: #214f3e;
    --zu231-text: #10211a;
    --zu231-muted: #53665e;
    --zu231-danger: #9f2f2f;
    --zu231-danger-bg: #fbf2f2;
    --zu231-success: #1e6d3d;
    --zu231-success-bg: #e9f5ed;
    --zu231-shadow: 0 14px 34px rgba(16, 33, 26, 0.08);
    --zu231-shadow-soft: 0 8px 20px rgba(16, 33, 26, 0.05);
    --zu231-radius: 14px;

    font-family: "Manrope", "Segoe UI", sans-serif;
    color: var(--zu231-text);
    background:
        radial-gradient(circle at 12% 0%, rgba(28, 95, 62, 0.08) 0, rgba(28, 95, 62, 0) 36%),
        linear-gradient(180deg, var(--zu231-bg) 0%, #f9fbf9 100%);
    border: 1px solid var(--zu231-border);
    border-radius: 22px;
    box-shadow: var(--zu231-shadow);
    max-width: 980px;
    margin: 0 auto;
    padding: 34px 28px;
}

.zu231-section-head {
    margin-bottom: 22px;
}

.zu231-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--zu231-secondary);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-size: 0.74rem;
    font-weight: 800;
}

.zu231-kicker::before {
    content: "";
    width: 24px;
    height: 1px;
    background: var(--zu231-border-strong);
}

.zu231-section-head h2 {
    margin: 8px 0 12px;
    font-family: "Merriweather", Georgia, serif;
    font-size: clamp(1.58rem, 3vw, 2.12rem);
    line-height: 1.2;
    color: var(--zu231-accent);
    display: flex;
    align-items: center;
    gap: 10px;
}

.zu231-heading-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: var(--zu231-accent-soft);
    color: var(--zu231-accent);
}

.zu231-section-head p {
    margin: 0;
    max-width: 68ch;
    color: var(--zu231-muted);
    line-height: 1.62;
    font-size: 0.98rem;
}

.zu231-whistleblowing {
    margin-top: 10px;
}

.zu231-document-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 16px;
    margin-bottom: 34px;
}

.zu231-card,
.zu231-alert,
.zu231-verify-result,
.zu231-form,
.zu231-step-content,
.zu231-success-box {
    border-radius: var(--zu231-radius);
    border: 1px solid var(--zu231-border);
    background: var(--zu231-card);
    box-shadow: var(--zu231-shadow-soft);
}

.zu231-card {
    padding: 22px 20px;
}

.zu231-card h3 {
    margin: 0 0 8px;
    font-size: 1rem;
    line-height: 1.4;
    color: var(--zu231-accent);
}

.zu231-card p {
    margin: 0 0 16px;
    color: var(--zu231-muted);
    font-size: 0.9rem;
}

.zu231-card-muted {
    background: var(--zu231-bg-deep);
}

.zu231-primary-actions,
.zu231-type-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
    margin: 0 0 24px;
}

.zu231-button {
    appearance: none;
    border: 0;
    border-radius: 10px;
    background: var(--zu231-accent);
    color: #fff;
    text-decoration: none;
    cursor: pointer;
    min-height: 48px;
    padding: 0 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font: 700 0.92rem/1 "Manrope", "Segoe UI", sans-serif;
    letter-spacing: 0.01em;
    transition: transform 140ms ease, background 140ms ease, box-shadow 140ms ease;
}

.zu231-button:hover,
.zu231-button:focus-visible {
    background: var(--zu231-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 10px 18px rgba(28, 95, 62, 0.2);
}

.zu231-button:focus-visible,
.zu231-copy-btn:focus-visible,
.zu231-form input:focus-visible,
.zu231-form textarea:focus-visible,
.zu231-form select:focus-visible,
.zu231-privacy-accept-row input[type="checkbox"]:focus-visible {
    outline: 3px solid rgba(28, 95, 62, 0.22);
    outline-offset: 2px;
}

.zu231-button[disabled] {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.zu231-button-secondary {
    background: #fff;
    color: var(--zu231-accent);
    border: 1px solid var(--zu231-border-strong);
}

.zu231-button-secondary:hover,
.zu231-button-secondary:focus-visible {
    background: var(--zu231-accent-soft);
}

.zu231-button-ghost {
    min-height: 38px;
    font-size: 0.86rem;
    background: transparent;
    color: var(--zu231-secondary);
    border: 1px solid var(--zu231-border);
}

.zu231-button-ghost:hover,
.zu231-button-ghost:focus-visible {
    background: var(--zu231-accent-soft);
}

.zu231-panel,
.zu231-form-panel {
    display: none;
}

.zu231-panel.is-active,
.zu231-form-panel.is-active {
    display: block;
}

.zu231-steps {
    display: flex;
    margin: 0 0 22px;
    border: 1px solid var(--zu231-border);
    border-radius: 12px;
    background: #fff;
    overflow: hidden;
}

.zu231-step {
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 60px;
    padding: 10px 14px;
    border-right: 1px solid var(--zu231-border);
    color: var(--zu231-muted);
    font-size: 0.87rem;
    font-weight: 700;
}

.zu231-step:last-child {
    border-right: 0;
}

.zu231-step-num {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.78rem;
    background: #91aa98;
    flex-shrink: 0;
}

.zu231-step[data-step-state="done"] {
    color: var(--zu231-success);
}

.zu231-step[data-step-state="done"] .zu231-step-num {
    background: var(--zu231-success);
    font-size: 0;
}

.zu231-step[data-step-state="done"] .zu231-step-num::before {
    content: "\2713";
    font-size: 0.86rem;
    font-weight: 800;
}

.zu231-step[data-step-state="active"] {
    color: var(--zu231-accent);
    background: var(--zu231-accent-soft);
}

.zu231-step[data-step-state="active"] .zu231-step-num {
    background: var(--zu231-accent);
}

.zu231-step-content {
    padding: 24px;
    transition: opacity 180ms ease, transform 180ms ease;
}

.zu231-step-title {
    margin: 0 0 10px;
    color: var(--zu231-accent);
    font: 700 1.04rem/1.35 "Merriweather", Georgia, serif;
}

.zu231-step-lead {
    margin: 0 0 16px;
    color: var(--zu231-muted);
    font-size: 0.92rem;
    line-height: 1.54;
}

.zu231-privacy-box {
    max-height: 260px;
    overflow-y: auto;
    padding: 16px;
    border-radius: 10px;
    border: 1px solid var(--zu231-border);
    background: linear-gradient(180deg, #fbfdfb 0%, var(--zu231-bg-deep) 100%);
    font-size: 0.92rem;
    line-height: 1.68;
    color: var(--zu231-text);
}

.zu231-privacy-accept-row {
    margin-top: 16px;
    border-radius: 10px;
    padding: 14px;
    border: 1px solid var(--zu231-border);
    background: var(--zu231-accent-soft);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    opacity: 0.48;
    transition: opacity 160ms ease;
}

.zu231-privacy-accept-row.is-ready {
    opacity: 1;
}

.zu231-privacy-accept-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--zu231-accent);
}

.zu231-privacy-accept-row label {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--zu231-secondary);
    font-weight: 650;
}

.zu231-privacy-controls {
    display: flex;
    justify-content: flex-end;
    margin-top: 16px;
}

.zu231-form {
    display: grid;
    gap: 18px;
    margin-top: 16px;
    padding: 24px;
}

.zu231-form-title {
    margin: 0;
    color: var(--zu231-accent);
    font: 700 1.04rem/1.35 "Merriweather", Georgia, serif;
}

.zu231-field-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
}

.zu231-form label {
    display: flex;
    flex-direction: column;
    gap: 7px;
    color: var(--zu231-text);
    font-size: 0.92rem;
    font-weight: 650;
}

.zu231-form label span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.01em;
}

.zu231-form input[type="text"],
.zu231-form input[type="email"],
.zu231-form textarea,
.zu231-form select,
.zu231-form input[type="file"] {
    width: 100%;
    box-sizing: border-box;
    border-radius: 10px;
    border: 1px solid var(--zu231-border);
    background: #fff;
    color: var(--zu231-text);
    font: 500 0.94rem/1.4 "Manrope", "Segoe UI", sans-serif;
    padding: 11px 13px;
    transition: border-color 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.zu231-form input:focus,
.zu231-form textarea:focus,
.zu231-form select:focus {
    border-color: var(--zu231-accent);
    box-shadow: 0 0 0 4px rgba(28, 95, 62, 0.13);
    background: #fcfefd;
}

.zu231-form textarea {
    resize: vertical;
    min-height: 144px;
}

.zu231-form input[type="file"]::file-selector-button {
    border: 0;
    border-radius: 8px;
    padding: 7px 11px;
    margin-right: 12px;
    background: var(--zu231-accent-soft);
    color: var(--zu231-accent);
    font: 700 0.8rem/1 "Manrope", "Segoe UI", sans-serif;
    cursor: pointer;
}

.zu231-form small {
    font-size: 0.82rem;
    color: var(--zu231-muted);
    line-height: 1.4;
}

.zu231-form-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.zu231-info-box {
    border: 1px solid var(--zu231-border);
    border-left: 4px solid var(--zu231-accent);
    border-radius: 12px;
    padding: 14px 16px;
    background: var(--zu231-accent-soft);
}

.zu231-info-box strong {
    display: block;
    color: var(--zu231-accent);
    margin-bottom: 6px;
    font-size: 0.82rem;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.zu231-info-box-text {
    margin: 0;
    color: var(--zu231-text);
    line-height: 1.56;
    font-size: 0.9rem;
}

.zu231-alert {
    margin-bottom: 18px;
    padding: 15px 16px;
    font-size: 0.92rem;
}

.zu231-alert p {
    margin: 3px 0;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.zu231-alert-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 1px;
}

.zu231-alert-error {
    color: var(--zu231-danger);
    border-color: rgba(159, 47, 47, 0.35);
    background: var(--zu231-danger-bg);
}

.zu231-success-box {
    margin-bottom: 18px;
    background: var(--zu231-success-bg);
    border-color: rgba(30, 109, 61, 0.35);
    padding: 20px;
}

.zu231-success-box h3 {
    margin: 0 0 10px;
    color: var(--zu231-success);
    font-size: 1.04rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.zu231-success-box p {
    margin: 0 0 14px;
    color: var(--zu231-muted);
    font-size: 0.9rem;
}

.zu231-success-help {
    margin-top: 14px;
    font-size: 0.88rem;
    color: var(--zu231-muted);
}

.zu231-code-copy-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.zu231-report-code {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    border-radius: 10px;
    border: 1px dashed var(--zu231-border-strong);
    background: #fff;
    color: var(--zu231-accent);
    padding: 8px 16px;
    letter-spacing: 0.1em;
    font: 800 clamp(1rem, 2.8vw, 1.25rem)/1 "Manrope", "Segoe UI", sans-serif;
}

.zu231-copy-btn {
    appearance: none;
    border: 1px solid var(--zu231-border-strong);
    border-radius: 10px;
    background: #fff;
    color: var(--zu231-accent);
    min-height: 38px;
    padding: 0 12px;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    cursor: pointer;
    font: 700 0.84rem/1 "Manrope", "Segoe UI", sans-serif;
}

.zu231-copy-btn:hover {
    background: var(--zu231-accent-soft);
}

.zu231-copy-btn.copied {
    color: var(--zu231-success);
    border-color: rgba(30, 109, 61, 0.45);
}

.zu231-a11y-live {
    position: absolute;
    left: -999em;
}

.zu231-verify-form {
    margin-top: 0;
    margin-bottom: 22px;
}

.zu231-verify-form-actions {
    margin-top: 4px;
}

.zu231-verify-result {
    margin-top: 24px;
    padding: 22px;
}

.zu231-status-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.91rem;
    margin-bottom: 18px;
}

.zu231-status-table th {
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--zu231-secondary);
    background: var(--zu231-accent-soft);
    border-bottom: 2px solid var(--zu231-border);
    padding: 10px 12px;
    text-align: left;
}

.zu231-status-table td {
    border-bottom: 1px solid var(--zu231-border);
    padding: 11px 12px;
    color: var(--zu231-text);
    vertical-align: top;
}

.zu231-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-radius: 999px;
    border: 1px solid var(--zu231-border-strong);
    color: var(--zu231-accent);
    background: var(--zu231-accent-soft);
    font-size: 0.79rem;
    font-weight: 800;
    letter-spacing: 0.03em;
    padding: 4px 10px;
}

.zu231-status-badge::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
}

.zu231-response-block {
    margin-top: 0;
    padding: 18px;
    border-radius: 12px;
    border: 1px solid var(--zu231-border);
    background: #f8fbf9;
}

.zu231-response-block h4 {
    margin: 0 0 10px;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--zu231-muted);
}

.zu231-response-text {
    color: var(--zu231-text);
    font-size: 0.93rem;
    line-height: 1.62;
}

.zu231-verify-empty-response {
    color: var(--zu231-muted);
    font-size: 0.9rem;
    margin: 14px 0 0;
}

/* ── Public conversation thread ─────────────────────────── */
.zu231-public-thread {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.zu231-qa-tree {
    border-left: 0;
    padding-left: 0;
    margin-top: 2px;
}

.zu231-public-thread-item {
    position: relative;
    padding: 14px 16px;
    background: #fff;
    border: 1px solid var(--zu231-border);
    border-radius: 10px;
    border-left: 4px solid var(--zu231-green);
    width: fit-content;
    max-width: min(84%, 760px);
}

.zu231-public-thread-item::before {
    content: none;
}

.zu231-public-thread-item--from-examiner {
    margin-right: auto;
    border-top-left-radius: 6px;
}

.zu231-public-thread-item--from-reporter {
    margin-left: auto;
    border-top-right-radius: 6px;
}

.zu231-public-thread-item--from-examiner::after,
.zu231-public-thread-item--from-reporter::after {
    content: "";
    position: absolute;
    top: 12px;
    width: 10px;
    height: 10px;
    background: inherit;
    border-top: 1px solid currentColor;
    border-right: 1px solid currentColor;
    color: var(--zu231-border);
}

.zu231-public-thread-item--from-examiner::after {
    left: -6px;
    transform: rotate(-135deg);
}

.zu231-public-thread-item--from-reporter::after {
    right: -6px;
    transform: rotate(45deg);
}

.zu231-public-thread-item--question {
    background: #f2f7ff;
    border-color: #cfe0f8;
    border-left-color: #1d4ed8;
}

.zu231-public-thread-item--answer {
    border-left-color: var(--zu231-success);
}

.zu231-public-thread-item--question::after {
    color: #cfe0f8;
}

.zu231-public-thread-item--answer::after {
    color: var(--zu231-border);
}

.zu231-public-thread-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 8px;
}

.zu231-public-thread-author {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--zu231-text);
}

.zu231-public-thread-kind {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 2px 8px;
    font-size: 0.72rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    font-weight: 800;
}

.zu231-public-thread-kind--question {
    background: #dbeafe;
    color: #1e40af;
}

.zu231-public-thread-kind--answer {
    background: #dcfce7;
    color: #166534;
}

.zu231-public-thread-date {
    font-size: 0.78rem;
    color: var(--zu231-muted);
    font-weight: 500;
}

.zu231-public-thread-body {
    font-size: 0.93rem;
    line-height: 1.62;
    color: var(--zu231-text);
}

.zu231-public-thread-body p:first-child { margin-top: 0; }
.zu231-public-thread-body p:last-child  { margin-bottom: 0; }

.zu231-honeypot {
    position: absolute;
    left: -999em;
}

.zu231-warning {
    border: 1px solid rgba(159, 47, 47, 0.35);
    border-radius: 12px;
    background: var(--zu231-danger-bg);
    color: var(--zu231-danger);
    padding: 14px 16px;
    font-size: 0.9rem;
}

@media (max-width: 860px) {
    .zu231-portal {
        padding: 26px 20px;
        border-radius: 18px;
    }

    .zu231-step {
        min-height: 56px;
        padding: 10px;
    }

    .zu231-step-label {
        font-size: 0.8rem;
    }
}

@media (max-width: 680px) {
    .zu231-steps {
        flex-wrap: wrap;
    }

    .zu231-step {
        flex: 1 1 50%;
        border-bottom: 1px solid var(--zu231-border);
    }

    .zu231-step:nth-child(2n) {
        border-right: 0;
    }

    .zu231-step:nth-last-child(-n+2) {
        border-bottom: 0;
    }

    .zu231-step-label {
        display: none;
    }

    .zu231-step-content,
    .zu231-form,
    .zu231-verify-result {
        padding: 18px;
    }

    .zu231-qa-tree {
        padding-left: 0;
    }

    .zu231-field-row,
    .zu231-document-grid,
    .zu231-primary-actions,
    .zu231-type-actions {
        grid-template-columns: 1fr;
    }

    .zu231-button {
        width: 100%;
    }

    .zu231-form-footer {
        flex-direction: column;
        align-items: stretch;
    }
}