/* ══════════════════════════════════════════════
   Cactus 2.0 — Dashboard & Session View
   ══════════════════════════════════════════════ */

/* ── Dashboard ────────────────────────────────────────────────────────────── */

.dashboard-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1rem;
    min-height: calc(100vh - 58px);
}

.dashboard-header {
    margin-bottom: 2rem;
}

.dashboard-header h1 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--clr-text-primary);
    margin: 0;
}

.dashboard-header p {
    color: var(--clr-text-muted);
    margin: 0.5rem 0 0;
    font-size: 0.92rem;
}

/* ── Sessions grid ── */
.sessions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.session-card {
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-card);
    text-decoration: none;
    color: inherit;
    transition: box-shadow 0.2s, transform 0.15s;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
}

.session-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
    text-decoration: none;
    color: inherit;
}

.session-card__title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--clr-text-primary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-card__tag {
    display: inline-block;
    background: var(--clr-accent-faint);
    color: var(--clr-accent-dark);
    padding: 0.15rem 0.6rem;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 600;
    width: fit-content;
}

.session-card__date {
    font-size: 0.78rem;
    color: var(--clr-text-muted);
}

.session-card__delete {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: none;
    border: none;
    color: var(--clr-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
}

.session-card:hover .session-card__delete {
    opacity: 1;
}

.session-card__delete:hover {
    color: var(--clr-error);
    background: var(--clr-error-faint);
}

/* "+" new session card */
.session-card--new {
    border: 2px dashed var(--clr-border-strong);
    background: var(--clr-primary-faint);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--clr-primary);
    font-weight: 600;
    font-size: 0.92rem;
    gap: 0.5rem;
    min-height: 120px;
    transition: background 0.2s, border-color 0.2s;
}

.session-card--new:hover {
    background: var(--clr-primary-soft);
    border-color: var(--clr-primary);
    transform: none;
    box-shadow: var(--shadow-card);
}

.session-card--new i {
    font-size: 1.5rem;
}

/* ── Card kit del tutor (accent terracotta) ── */
.session-card--tutor {
    background: var(--clr-accent-faint);
    border-color: var(--clr-accent-soft);
    border-top: 3px solid var(--clr-accent);
}

.session-card__badge {
    width: fit-content;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.15rem 0.55rem;
    border-radius: var(--radius-pill);
    background: var(--clr-accent);
    color: #fff;
}

/* ── Empty state ── */
.dashboard-empty {
    text-align: center;
    padding: 4rem 1rem;
}

.dashboard-empty__icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-8px); }
}

.dashboard-empty h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--clr-text-primary);
    margin: 0 0 0.75rem;
}

.dashboard-empty p {
    color: var(--clr-text-secondary);
    font-size: 0.95rem;
    max-width: 400px;
    margin: 0 auto 1.5rem;
    line-height: 1.6;
}

/* Shared CTA button */
.cactus-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--clr-accent);
    color: var(--clr-text-onprimary);
    border: none;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-display);
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
    box-shadow: var(--shadow-float);
    text-decoration: none;
}

.cactus-button:hover {
    background: var(--clr-accent-dark);
    transform: translateY(-2px);
    color: var(--clr-text-onprimary);
    text-decoration: none;
}


/* ══════════════════════════════════════════════
   Session Grid (3-column layout)
   ══════════════════════════════════════════════ */

.session-grid {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    gap: 0;
    min-height: calc(100vh - 58px);
    background: var(--clr-bg-page);
}

.study-center {
    padding: 1.5rem 2rem 2rem;
    overflow-y: auto;
    max-width: none;
}

/* ══════════════════════════════════════════════
   KIT DEL TUTOR — vista sola lettura, accent terracotta
   ══════════════════════════════════════════════ */
.session-grid--tutor {
    /* niente chat → piano più ampio (fino al 32%), il materiale resta dominante (~68%) */
    grid-template-columns: minmax(340px, 32%) 1fr;
}

.session-tutor-banner {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--clr-accent-faint);
    border: 1px solid var(--clr-accent-soft);
    border-left: 4px solid var(--clr-accent);
    color: var(--clr-accent-dark);
    padding: 0.7rem 1rem;
    border-radius: 8px;
    font-size: 0.92rem;
    margin-bottom: 1.25rem;
}

.session-tutor-banner i {
    font-size: 1.15rem;
    color: var(--clr-accent);
}

.session-title--readonly {
    cursor: default;
}

/* ── Nascondi / mostra il piano (solo desktop) ── */
.plan-collapse-btn {
    background: none;
    border: none;
    color: var(--clr-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    font-size: 0.95rem;
    line-height: 1;
}

.plan-collapse-btn:hover {
    color: var(--clr-accent);
    background: var(--clr-accent-faint);
}

.plan-reopen-btn {
    display: none;
    align-items: center;
    gap: 0.4rem;
    background: var(--clr-accent-faint);
    border: 1px solid var(--clr-accent-soft);
    color: var(--clr-accent-dark);
    border-radius: 8px;
    padding: 0.4rem 0.85rem;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 1rem;
}

.plan-reopen-btn:hover {
    background: var(--clr-accent-soft);
}

@media (min-width: 993px) {
    .session-grid--tutor.plan-collapsed {
        grid-template-columns: 1fr;
    }

    .session-grid--tutor.plan-collapsed .plan-sidebar {
        display: none;
    }

    .session-grid--tutor.plan-collapsed .plan-reopen-btn {
        display: inline-flex;
    }
}

/* Documenti del tutor (sola lettura) */
.session-upload--readonly {
    padding-bottom: 0.5rem;
}

.upload-compact-row--readonly {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.session-documents-label {
    font-size: 0.85rem;
    color: var(--clr-text-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

/* Accenti terracotta sugli elementi del kit */
.session-grid--tutor .plan-teacher {
    border-left: 4px solid var(--clr-accent);
    background: var(--clr-accent-faint);
}

.session-grid--tutor .plan-teacher__badge {
    color: var(--clr-accent-dark);
    font-size: 0.85rem;
}

/* Piano più ampio → testo leggermente più grande e arioso */
.session-grid--tutor .plan-teacher__content {
    font-size: 0.95rem;
    line-height: 1.6;
}

.session-grid--tutor .material-card {
    border-left: 4px solid var(--clr-accent);
}

/* ── Plan Sidebar ── */
.plan-sidebar {
    background: var(--clr-bg-sidebar);
    border-right: 1px solid var(--clr-border-default);
    padding: 1.25rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    overflow-y: auto;
    max-height: calc(100vh - 58px);
    position: sticky;
    top: 58px;
}

.plan-sidebar__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.plan-sidebar__title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    margin: 0;
    color: var(--clr-text-primary);
}

.plan-sidebar__edit-btn {
    background: transparent;
    border: none;
    color: var(--clr-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    transition: color 0.15s;
}

.plan-sidebar__edit-btn:hover {
    color: var(--clr-primary);
}

.plan-sidebar__mobile-close {
    display: none;
}

.plan-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 0.5rem;
    text-align: center;
    color: var(--clr-text-muted);
}

.plan-empty i {
    font-size: 2rem;
    color: var(--clr-primary);
}

.plan-empty p {
    font-size: 0.9rem;
    margin: 0;
}

.plan-skip-link {
    background: none;
    border: none;
    color: var(--clr-text-muted);
    text-decoration: underline;
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    transition: color 0.15s;
}

.plan-skip-link:hover {
    color: var(--clr-text-primary);
}

.plan-empty__hint {
    font-size: 0.75rem;
    color: var(--clr-text-muted);
    font-style: italic;
}

.plan-meta {
    font-size: 0.75rem;
    color: var(--clr-text-muted);
}

.plan-meta__subject {
    background: var(--clr-primary-faint);
    color: var(--clr-primary-dark);
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-pill);
}

.plan-steps {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.plan-step {
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: var(--radius-md);
    padding: 0.55rem 0.65rem;
    transition: background 0.15s;
}

.plan-step:hover {
    background: var(--clr-primary-faint);
}

.plan-step__row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.plan-step__check {
    cursor: pointer;
    accent-color: var(--clr-primary);
}

.plan-step__badge {
    color: var(--clr-accent);
    font-size: 1rem;
}

.plan-step__title {
    flex: 1;
    font-size: 0.9rem;
    color: var(--clr-text-primary);
}

.plan-step--completed .plan-step__title {
    text-decoration: line-through;
    color: var(--clr-text-muted);
}

.plan-step--checkpoint {
    border-left: 3px solid var(--clr-accent);
}

.plan-step__expand {
    background: none;
    border: none;
    color: var(--clr-text-muted);
    cursor: pointer;
    padding: 0;
    transition: transform 0.2s;
}

.plan-step__expand[aria-expanded="true"] {
    transform: rotate(180deg);
}

.plan-step__details {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px dashed var(--clr-border-default);
    font-size: 0.85rem;
    color: var(--clr-text-secondary);
}

.plan-step__description {
    margin: 0 0 0.4rem;
    line-height: 1.4;
}

.plan-step__method {
    margin: 0 0 0.3rem;
    font-style: italic;
    color: var(--clr-text-muted);
}

.plan-step__method i,
.plan-step__date i {
    margin-right: 0.25rem;
}

.plan-step__date {
    margin: 0;
    font-size: 0.78rem;
    color: var(--clr-text-muted);
}

.plan-edit-prompt {
    margin-top: auto;
    display: flex;
    gap: 0.35rem;
    border-top: 1px solid var(--clr-border-default);
    padding-top: 0.75rem;
}

.plan-edit-prompt__input {
    flex: 1;
    resize: none;
    border: 1px solid var(--clr-border-input);
    border-radius: var(--radius-md);
    padding: 0.4rem 0.5rem;
    font-size: 0.8rem;
    font-family: var(--font-body);
    background: var(--clr-bg-input);
    color: var(--clr-text-primary);
    transition: border-color 0.15s;
}

.plan-edit-prompt__input:focus {
    outline: none;
    border-color: var(--clr-border-focus);
}

.plan-edit-prompt__send {
    background: var(--clr-primary);
    color: var(--clr-text-onprimary);
    border: none;
    border-radius: var(--radius-md);
    padding: 0 0.7rem;
    cursor: pointer;
    transition: background 0.15s;
}

.plan-edit-prompt__send:hover {
    background: var(--clr-primary-dark);
}

/* ── Intro hat ── */
.intro-hat {
    background: var(--clr-primary-faint);
    border-left: 3px solid var(--clr-primary);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    margin: 1rem 0 1.25rem;
    font-size: 0.9rem;
    color: var(--clr-text-primary);
}

.intro-hat p {
    margin: 0 0 0.3rem;
    line-height: 1.45;
}

.intro-hat p:last-child {
    margin-bottom: 0;
}

.intro-hat__method {
    color: var(--clr-text-secondary);
    font-size: 0.85rem;
}

.intro-hat__method i {
    margin-right: 0.3rem;
    color: var(--clr-primary);
}

/* ── Tool buttons row ── */
.tool-buttons-row {
    margin: 1.5rem 0;
}

.tool-buttons-row__title {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--clr-text-secondary);
    margin: 0 0 0.6rem;
}

.tool-buttons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 0.6rem;
}

.tool-btn {
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: var(--radius-md);
    padding: 0.7rem 0.8rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    text-align: left;
    transition: border-color 0.15s, background 0.15s;
    position: relative;
}

.tool-btn:hover {
    border-color: var(--clr-primary);
    background: var(--clr-primary-faint);
}

.tool-btn__icon {
    font-size: 1.3rem;
    color: var(--clr-primary);
}

.tool-btn__label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--clr-text-primary);
}

.tool-btn--recommended {
    border-color: var(--clr-accent);
    background: linear-gradient(135deg, var(--clr-bg-card) 80%, rgba(200,119,58,0.12));
}

.tool-btn--recommended::after {
    content: "Consigliato";
    position: absolute;
    top: -0.4rem;
    right: 0.4rem;
    background: var(--clr-accent);
    color: #fff;
    font-size: 0.65rem;
    padding: 0.1rem 0.4rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
}

/* ── Mobile toggles ── */
.mobile-plan-toggle {
    display: none;
}

.plan-sidebar-backdrop {
    display: none;
}

/* ── Header ── */
.session-header {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.session-header__back {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--clr-primary-faint);
    border: 1px solid var(--clr-border-default);
    color: var(--clr-text-secondary);
    text-decoration: none;
    transition: background 0.15s;
    flex-shrink: 0;
}

.session-header__back:hover {
    background: var(--clr-primary-soft);
    color: var(--clr-text-primary);
}

.session-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--clr-text-primary);
    margin: 0;
    outline: none;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
    min-width: 100px;
}

.session-title:focus {
    border-bottom-color: var(--clr-accent);
}

.session-tag-input {
    font-size: 0.82rem;
    padding: 0.2rem 0.6rem;
    border: 1px solid var(--clr-border-input);
    border-radius: var(--radius-pill);
    background: var(--clr-bg-input);
    color: var(--clr-text-secondary);
    outline: none;
    width: 140px;
    transition: border-color 0.2s;
}

.session-tag-input:focus {
    border-color: var(--clr-accent);
}

.session-tag-input::placeholder {
    color: var(--clr-text-muted);
}

/* ── Upload zone ── */
.session-upload {
    margin-bottom: 2rem;
}

.upload-dropzone {
    border: 2px dashed var(--clr-border-strong);
    border-radius: var(--radius-lg);
    padding: 2.5rem 1.5rem;
    text-align: center;
    background: var(--clr-primary-faint);
    transition: border-color 0.2s, background 0.2s;
    cursor: pointer;
}

.upload-dropzone:hover {
    border-color: var(--clr-primary);
    background: var(--clr-primary-soft);
}

.upload-dropzone.drag-over {
    border-color: var(--clr-accent);
    background: var(--clr-accent-faint);
}

.upload-dropzone i {
    font-size: 2.5rem;
    color: var(--clr-primary);
    display: block;
    margin-bottom: 0.75rem;
}

.upload-dropzone p {
    color: var(--clr-text-secondary);
    margin: 0 0 0.75rem;
    font-size: 0.92rem;
}

.upload-dropzone .cactus-button {
    font-size: 0.88rem;
    padding: 0.55rem 1.25rem;
}

/* Compact upload (when docs exist) */
.upload-compact-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.upload-add-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.35rem 0.75rem;
    border: 1px dashed var(--clr-border-strong);
    border-radius: var(--radius-pill);
    background: var(--clr-primary-faint);
    color: var(--clr-primary);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}

.upload-add-btn:hover {
    background: var(--clr-primary-soft);
    border-color: var(--clr-primary);
}

/* Document pills */
.session-documents {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.doc-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: var(--radius-pill);
    font-size: 0.82rem;
    color: var(--clr-text-primary);
    box-shadow: var(--shadow-card);
}

.doc-pill i {
    color: var(--clr-error);
}

.doc-pill__remove {
    background: none;
    border: none;
    color: var(--clr-text-muted);
    cursor: pointer;
    padding: 0;
    font-size: 0.85rem;
    line-height: 1;
    margin-left: 0.25rem;
    transition: color 0.15s;
}

.doc-pill__remove:hover {
    color: var(--clr-error);
}

/* ── Document type chips (replaces individual pills after upload) ── */
.doc-type-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.9rem;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: var(--radius-pill);
    font-size: 0.82rem;
    color: var(--clr-text-primary);
    box-shadow: var(--shadow-card);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.doc-type-chip:hover {
    background: var(--clr-primary-soft);
    border-color: var(--clr-primary);
    transform: translateY(-1px);
}
.doc-type-chip--image i { color: #0ea5e9; }
.doc-type-chip--pdf   i { color: var(--clr-error); }

/* ── Modal overlay ── */
.doc-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.doc-modal {
    position: relative;
    background: var(--clr-bg-card);
    border-radius: var(--radius-card, 12px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    width: 100%;
    max-width: 960px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.doc-modal__close {
    position: absolute;
    top: 0.6rem;
    right: 0.6rem;
    z-index: 10;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: 50%;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--clr-text-muted);
    transition: color 0.15s, background 0.15s;
}
.doc-modal__close:hover {
    color: var(--clr-error);
    background: var(--clr-error-soft, #fee2e2);
}

/* ── Carousel modal ── */
.doc-modal--carousel {
    align-items: center;
    padding: 2.5rem 1rem 1rem;
    gap: 0.75rem;
    background: #0f0f0f;
}

.carousel-track {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0;
    width: 100%;
    position: relative;
}

.carousel-slide {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.carousel-img {
    max-width: 100%;
    max-height: 68vh;
    object-fit: contain;
    border-radius: 6px;
    transform-origin: center;
    transition: transform 0.15s ease;
}

.carousel-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    color: #888;
    font-size: 0.9rem;
    padding: 3rem;
}
.carousel-placeholder i { font-size: 3rem; color: #555; }

.carousel-prev,
.carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    border-radius: 50%;
    width: 2.4rem;
    height: 2.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: background 0.15s;
    z-index: 5;
}
.carousel-prev { left: 0.5rem; }
.carousel-next { right: 0.5rem; }
.carousel-prev:hover,
.carousel-next:hover { background: rgba(255, 255, 255, 0.25); }

.carousel-thumbs {
    display: flex;
    gap: 0.4rem;
    justify-content: center;
    flex-wrap: wrap;
    padding: 0 0.5rem;
    max-width: 100%;
}

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.5rem 0 0.25rem;
}

.carousel-ctrl-btn {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 6px;
    color: #fff;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.15s;
}

.carousel-ctrl-btn:hover {
    background: rgba(255,255,255,0.28);
}

.carousel-ctrl-sep {
    width: 1px;
    height: 1.2rem;
    background: rgba(255,255,255,0.25);
    margin: 0 0.2rem;
}

.carousel-thumb {
    width: 3rem;
    height: 3rem;
    border: 2px solid transparent;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    padding: 0;
    background: #333;
    color: #aaa;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.15s;
    flex-shrink: 0;
}
.carousel-thumb img { width: 100%; height: 100%; object-fit: cover; }
.carousel-thumb--active { border-color: var(--clr-primary); }

.carousel-remove-btn {
    position: absolute;
    bottom: 0.5rem;
    right: 0.5rem;
    background: rgba(0, 0, 0, 0.55);
    border: none;
    border-radius: 6px;
    color: #fff;
    padding: 0.3rem 0.5rem;
    cursor: pointer;
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.2s, background 0.15s;
}
.carousel-slide:hover .carousel-remove-btn { opacity: 1; }
.carousel-remove-btn:hover { background: var(--clr-error); }

/* ── Docs list modal (PDF) ── */
.doc-modal--list {
    max-width: 480px;
    padding: 1.5rem 1.5rem 1rem;
    gap: 0.75rem;
}

.docs-modal__title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--clr-text-primary);
    margin: 0 0 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.docs-modal__title i { color: var(--clr-error); }

.docs-modal__list {
    list-style: none;
    padding: 0;
    margin: 0;
    overflow-y: auto;
    max-height: 55vh;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.docs-modal__item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 0.75rem;
    background: var(--clr-bg-page, #f9f9f9);
    border: 1px solid var(--clr-border-default);
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--clr-text-primary);
}

.docs-modal__item-icon { color: var(--clr-error); flex-shrink: 0; }

.docs-modal__item-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.docs-modal__remove {
    background: none;
    border: none;
    color: var(--clr-text-muted);
    cursor: pointer;
    padding: 0.2rem 0.3rem;
    font-size: 0.85rem;
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
    flex-shrink: 0;
}
.docs-modal__item:hover .docs-modal__remove { opacity: 1; }
.docs-modal__remove:hover { color: var(--clr-error); background: var(--clr-error-soft, #fee2e2); }

/* Upload progress */
.session-upload-progress {
    margin-top: 0.75rem;
}

.upload-status-phrases {
    font-size: 0.85rem;
    color: var(--clr-text-muted);
    font-style: italic;
    margin-top: 0.35rem;
}

/* ── Material zone ── */
.session-material {
    margin-bottom: 2rem;
}

.material-placeholder {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: var(--radius-lg);
    color: var(--clr-text-muted);
}

.material-placeholder i {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.5rem;
}

.material-card {
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    margin-bottom: 1rem;
}

.material-card__title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--clr-primary-dark);
    margin: 0 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.material-card__badge {
    font-size: 0.72rem;
    background: var(--clr-primary-faint);
    color: var(--clr-primary);
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
}

.material-content {
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--clr-text-primary);
}

/* Markdown inside material card */
.material-content h2 { font-size: 1.2rem; margin-top: 1.25rem; color: var(--clr-primary); font-family: var(--font-display); }
.material-content h3 { font-size: 1.05rem; margin-top: 1rem; font-family: var(--font-display); }
.material-content h4 { font-size: 0.95rem; margin-top: 0.8rem; }
.material-content ul, .material-content ol { padding-left: 1.4rem; }
.material-content table { font-size: 0.9rem; width: 100%; border-collapse: collapse; margin: 0.8rem 0; }
.material-content th, .material-content td { border: 1px solid var(--clr-border-input); padding: 0.45rem 0.7rem; }
.material-content th { background: var(--clr-primary-faint); }
.material-content blockquote { border-left: 3px solid var(--clr-primary); padding-left: 0.6rem; margin: 0.4rem 0; color: var(--clr-text-secondary); }
.material-content code { background: var(--clr-primary-faint); padding: 0.1rem 0.35rem; border-radius: 4px; font-size: 0.85em; }
.material-content strong { color: var(--clr-primary-dark); }

/* Adaptation loading spinner */
.adaptation-loading {
    text-align: center;
    padding: 2.5rem 1rem;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: var(--radius-lg);
}

.adaptation-loading__spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--clr-border-input);
    border-top-color: var(--clr-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.adaptation-loading p {
    color: var(--clr-text-muted);
    font-size: 0.92rem;
    margin: 0;
}

.adaptation-loading .phrase {
    font-style: italic;
    color: var(--clr-primary);
    margin-top: 0.5rem;
    font-weight: 500;
}


/* ══════════════════════════════════════════════
   Responsive
   ══════════════════════════════════════════════ */

/* ── Tablet (<= 992px): plan becomes drawer, chat stays right ──────── */
@media (max-width: 992px) {
    .session-grid {
        grid-template-columns: 1fr 320px;
    }

    .session-grid--tutor {
        /* piano in overlay, nessuna chat → centro a tutta larghezza */
        grid-template-columns: 1fr;
    }

    /* su mobile il piano è già un overlay con il suo toggle → niente collapse desktop */
    .plan-collapse-btn { display: none; }

    .plan-sidebar {
        position: fixed;
        top: 58px;
        left: -320px;
        width: 300px;
        height: calc(100vh - 58px);
        z-index: 1055;
        transition: left 0.25s ease;
        box-shadow: var(--shadow-float);
        border-right: 1px solid var(--clr-border-default);
    }

    .plan-sidebar.open {
        left: 0;
    }

    .plan-sidebar__mobile-close {
        display: inline-flex;
        background: none;
        border: none;
        color: var(--clr-text-muted);
        cursor: pointer;
        align-self: flex-end;
    }

    .mobile-plan-toggle {
        display: inline-flex;
        position: fixed;
        top: 70px;
        left: 0.75rem;
        z-index: 1050;
        background: var(--clr-bg-card);
        border: 1px solid var(--clr-border-default);
        border-radius: 50%;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        color: var(--clr-primary);
        box-shadow: var(--shadow-card);
        cursor: pointer;
    }

    .plan-sidebar-backdrop {
        position: fixed;
        inset: 58px 0 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: 1054;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.25s;
    }

    .plan-sidebar-backdrop.visible {
        opacity: 1;
        pointer-events: auto;
    }

    .study-center {
        padding: 1rem;
    }
}

/* ── Mobile (<= 576px): chat becomes bottom sheet with peek ────────── */
@media (max-width: 576px) {
    .dashboard-container {
        padding: 1.25rem 0.75rem;
    }

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

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

    .chat-sidebar {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        top: auto;
        max-height: 85vh;
        min-height: unset;
        height: 56px;
        border-left: none;
        border-top: 1px solid var(--clr-border-default);
        border-top-left-radius: var(--radius-lg);
        border-top-right-radius: var(--radius-lg);
        box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.12);
        z-index: 1052;
        transition: height 0.25s ease;
    }

    .chat-sidebar.open {
        height: 85vh;
    }

    .chat-sidebar__peek {
        display: flex;
        flex-direction: column;
        align-items: center;
        background: transparent;
        border: none;
        padding: 0.5rem;
        cursor: pointer;
        width: 100%;
        color: var(--clr-text-muted);
    }

    .chat-sidebar__peek-handle {
        width: 40px;
        height: 4px;
        background: var(--clr-border-strong);
        border-radius: 2px;
        margin-bottom: 0.25rem;
    }

    .chat-sidebar__peek-label {
        font-size: 0.85rem;
        font-weight: 500;
    }

    .chat-sidebar:not(.open) .chat-sidebar__body {
        display: none;
    }

    .chat-sidebar.open .chat-sidebar__peek {
        display: none;
    }

    .chat-sidebar__close {
        display: inline-flex;
    }

    .study-center {
        padding-bottom: 70px;
    }

    .mobile-plan-toggle {
        top: 68px;
    }

    .upload-dropzone {
        padding: 1.75rem 1rem;
    }

    .session-title {
        font-size: 1.2rem;
    }
}


/* ══════════════════════════════════════════════
   Podcast card (audio-first)
   ══════════════════════════════════════════════ */

.podcast-card {
    background: linear-gradient(135deg, rgba(74, 124, 89, 0.06), rgba(233, 145, 62, 0.06));
    border: 1px solid var(--clr-border-default);
    border-radius: var(--radius-lg, 14px);
    padding: 1.5rem 1.25rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.podcast-card__header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.podcast-card__mic {
    font-size: 1.3rem;
    line-height: 1;
}

.podcast-card__title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0;
    color: var(--clr-text-primary);
    line-height: 1.3;
}

.podcast-card__speakers {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--clr-text-muted);
}

.podcast-card__speaker {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.55rem;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: 999px;
    font-weight: 500;
    color: var(--clr-text-primary);
}

.podcast-card__avatar {
    font-size: 0.95rem;
    line-height: 1;
}

.podcast-card__x {
    font-weight: 300;
    opacity: 0.6;
}

.podcast-card__duration {
    margin-left: auto;
    font-variant-numeric: tabular-nums;
}

.podcast-card__player {
    display: flex;
    justify-content: center;
    padding: 0.5rem 0;
}

.podcast-card__play {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: none;
    background: var(--clr-accent);
    color: var(--clr-text-onprimary, #fff);
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(233, 145, 62, 0.35);
    transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.podcast-card__play i {
    line-height: 1;
    pointer-events: none;
}

.podcast-card__play:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 6px 18px rgba(233, 145, 62, 0.5);
}

.podcast-card__play:active:not(:disabled) {
    transform: scale(0.98);
}

.podcast-card__play--loading {
    background: var(--clr-text-muted);
    animation: podcast-pulse 1.2s ease-in-out infinite;
}

@keyframes podcast-pulse {
    0%, 100% { box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15); }
    50% { box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3); }
}

.podcast-card__progress-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.podcast-card__progress {
    position: relative;
    height: 6px;
    background: var(--clr-border-default);
    border-radius: 999px;
    cursor: pointer;
    outline: none;
}

.podcast-card__progress:focus-visible {
    box-shadow: 0 0 0 2px var(--clr-accent);
}

.podcast-card__progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0%;
    background: var(--clr-accent);
    border-radius: 999px;
    transition: width 0.1s linear;
}

.podcast-card__progress-thumb {
    position: absolute;
    top: 50%;
    left: 0%;
    width: 12px;
    height: 12px;
    background: var(--clr-accent);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}

.podcast-card__time {
    font-size: 0.78rem;
    color: var(--clr-text-muted);
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.podcast-card__status {
    margin: 0;
    font-size: 0.8rem;
    color: var(--clr-text-muted);
    min-height: 1.1em;
    text-align: center;
}

.podcast-card__status--loading {
    color: var(--clr-accent);
}

.podcast-card__status--error {
    color: #c0392b;
}


/* ══════════════════════════════════════════════
   Dark mode overrides
   ══════════════════════════════════════════════ */

@media (prefers-color-scheme: dark) {
    .upload-dropzone {
        background: rgba(74,124,89,0.06);
    }

    .adaptation-loading {
        background: var(--clr-bg-card);
    }

    .podcast-card {
        background: linear-gradient(135deg, rgba(74, 124, 89, 0.12), rgba(233, 145, 62, 0.12));
    }
}


/* ══════════════════════════════════════════════
   Session intent input ("Cosa vuoi imparare")
   ══════════════════════════════════════════════ */

.session-intent-wrapper {
    margin-bottom: 1rem;
}

.session-intent__label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    margin-bottom: 0.35rem;
}

.session-intent__label i {
    margin-right: 0.3rem;
    color: var(--clr-primary);
}

.session-intent__input {
    width: 100%;
    border: 1.5px solid var(--clr-border-input);
    border-radius: var(--radius-md);
    padding: 0.6rem 0.8rem;
    font-size: 0.9rem;
    font-family: var(--font-body);
    background: var(--clr-bg-input);
    color: var(--clr-text-primary);
    resize: vertical;
    transition: border-color 0.2s;
}

.session-intent__input:focus {
    outline: none;
    border-color: var(--clr-primary);
}

.session-intent__input::placeholder {
    color: var(--clr-text-muted);
    font-style: italic;
}


/* ══════════════════════════════════════════════
   Center quiz zone (assessment-style)
   ══════════════════════════════════════════════ */

.center-quiz-zone {
    padding: 1rem 0 1.5rem;
}

.center-quiz {
    max-width: 660px;
    margin: 0 auto;
}

.center-quiz__header {
    text-align: center;
    margin-bottom: 1.25rem;
}

.center-quiz__header h2 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--clr-primary);
    margin: 0 0 0.4rem;
}

.cq-progress-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--clr-text-muted);
    margin-bottom: 0.3rem;
}

.cq-card {
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-default);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-float);
    margin-bottom: 1rem;
}

.cq-question-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--clr-text-primary);
    margin: 0 0 1rem;
    line-height: 1.45;
}

.cq-option-label {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.7rem 0.9rem;
    border: 1.5px solid var(--clr-border-default);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 0.5rem;
    font-size: 0.92rem;
    color: var(--clr-text-primary);
}

.cq-option-label:hover {
    background: rgba(74,124,89,0.08);
    border-color: var(--clr-primary);
}

.cq-option-label:has(input:checked) {
    background: rgba(74,124,89,0.15);
    border-color: var(--clr-primary);
    font-weight: 500;
}

.cq-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cq-skip-link {
    text-align: center;
    font-size: 0.82rem;
    color: var(--clr-text-muted);
    cursor: pointer;
    text-decoration: underline;
    margin-top: 0.25rem;
    transition: color 0.15s;
}

.cq-skip-link:hover {
    color: var(--clr-text-primary);
}


/* ══════════════════════════════════════════════
   Material generating state
   ══════════════════════════════════════════════ */

.material-generating {
    padding: 1.25rem 0 0.75rem;
}

.material-generating__status {
    font-size: 0.88rem;
    color: var(--clr-primary);
    font-style: italic;
    text-align: center;
    margin-top: 0.5rem;
    min-height: 1.2em;
}