/* ============================================
   Reading Tools — Stili
   Segnalibri, evidenziazioni, estratti, toolbar, pannello
   ============================================ */

/* === VARIABILI LOCALI === */
:root {
    /* Colori evidenziazione — specifici del sistema reading */
    --rt-gold: rgba(197, 160, 89, 0.3);
    --rt-blue: rgba(100, 149, 237, 0.3);
    --rt-green: rgba(76, 175, 80, 0.3);
    --rt-pink: rgba(233, 30, 99, 0.25);
    --rt-gold-solid: #C5A059;
    --rt-blue-solid: #6495ED;
    --rt-green-solid: #4CAF50;
    --rt-pink-solid: #E91E63;

    /* Layout pannello */
    --rt-panel-width: 340px;
}

[data-theme="light"] {
    --rt-gold: rgba(197, 160, 89, 0.25);
    --rt-blue: rgba(100, 149, 237, 0.2);
    --rt-green: rgba(76, 175, 80, 0.2);
    --rt-pink: rgba(233, 30, 99, 0.15);
}

/* === EVIDENZIAZIONI NEL TESTO === */
.reading-highlight {
    color: inherit;
    border-radius: 2px;
    cursor: pointer;
    transition: filter var(--duration-fast, 150ms) var(--ease-out, ease);
}

.reading-highlight:hover {
    filter: brightness(1.2);
}

.reading-highlight--gold { background: var(--rt-gold); }
.reading-highlight--blue { background: var(--rt-blue); }
.reading-highlight--green { background: var(--rt-green); }
.reading-highlight--pink { background: var(--rt-pink); }

/* === MARKER SEGNALIBRI NEL TESTO === */

/* Auto-bookmark: bordo dorato sottile a sinistra del paragrafo */
.bookmark-auto-paragraph {
    border-left: 2px solid var(--rt-gold-solid);
    padding-left: var(--space-3, 12px);
    transition: border-color var(--duration-normal, 300ms) var(--ease-out, ease);
}

/* Segnalibro manuale: icona nel margine sinistro */
.bookmark-marker {
    position: absolute;
    left: -28px;
    top: 2px;
    color: var(--rt-gold-solid);
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--duration-fast, 150ms) var(--ease-out, ease),
                transform var(--duration-fast, 150ms) var(--ease-out, ease);
    z-index: var(--z-above, 5);
    line-height: 1;
}

.bookmark-marker:hover {
    opacity: 1;
    transform: scale(1.2);
}

/* Flash alla navigazione */
.reading-flash {
    animation: readingFlash 1.5s var(--ease-out, ease);
}

@keyframes readingFlash {
    0% { background-color: rgba(197, 160, 89, 0.4); }
    100% { background-color: transparent; }
}

/* === POPUP RIMUOVI HIGHLIGHT === */
.highlight-remove-popup {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md, 8px);
    padding: var(--space-1, 4px) var(--space-2, 8px);
    box-shadow: var(--shadow-lg, 0 10px 20px rgba(0, 0, 0, 0.2));
    animation: rtFadeIn var(--duration-fast, 150ms) var(--ease-out, ease);
}

.highlight-remove-btn {
    background: none;
    border: none;
    color: var(--rt-pink-solid);
    font-family: var(--font-ui);
    font-size: 0.8rem;
    cursor: pointer;
    padding: var(--space-1, 4px) var(--space-2, 8px);
    border-radius: var(--radius-sm, 4px);
    transition: background var(--duration-fast, 150ms) var(--ease-out, ease);
}

.highlight-remove-btn:hover {
    background: rgba(233, 30, 99, 0.15);
}

/* === POPUP MARKER SEGNALIBRO === */
.bookmark-marker-popup {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md, 8px);
    padding: var(--space-1, 4px);
    display: flex;
    gap: var(--space-1, 4px);
    box-shadow: var(--shadow-lg, 0 10px 20px rgba(0, 0, 0, 0.2));
    z-index: calc(var(--z-top, 999) + 2);
    animation: rtFadeIn var(--duration-fast, 150ms) var(--ease-out, ease);
}

.bookmark-marker-popup__btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-ui);
    font-size: 0.75rem;
    cursor: pointer;
    padding: var(--space-1, 4px) var(--space-2, 8px);
    border-radius: var(--radius-sm, 4px);
    transition: background var(--duration-fast, 150ms) var(--ease-out, ease),
                color var(--duration-fast, 150ms) var(--ease-out, ease);
    white-space: nowrap;
}

.bookmark-marker-popup__btn:hover {
    color: var(--color-accent);
    background: rgba(197, 160, 89, 0.1);
}

.bookmark-marker-popup__btn--danger:hover {
    color: var(--rt-pink-solid);
    background: rgba(233, 30, 99, 0.15);
}

/* === BOTTONE HEADER === */
.reading-tools-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm, 4px);
    transition: color var(--duration-fast, 150ms) var(--ease-out, ease),
                background var(--duration-fast, 150ms) var(--ease-out, ease);
}

.reading-tools-toggle:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

/* === TOOLBAR POPUP === */
.reading-toolbar {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-1, 4px);

    /* Glass effect — stile header del museo */
    background: linear-gradient(180deg,
        rgba(8, 8, 8, 0.96) 0%,
        rgba(5, 5, 5, 0.92) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(197, 160, 89, 0.12);

    border-radius: var(--radius-md, 8px);
    padding: var(--space-2, 6px) var(--space-3, 10px);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.02) inset,
        0 8px 24px rgba(0, 0, 0, 0.5);
    transform: translateX(-50%);
    z-index: var(--z-top, 999);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-fast, 150ms) var(--ease-out, ease),
                transform var(--duration-fast, 150ms) var(--ease-out, ease);
}

[data-theme="light"] .reading-toolbar {
    background: linear-gradient(180deg,
        rgba(255, 255, 255, 0.96) 0%,
        rgba(248, 248, 248, 0.92) 100%);
    border: 1px solid rgba(154, 123, 58, 0.2);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.5) inset,
        0 8px 24px rgba(0, 0, 0, 0.15);
}

.reading-toolbar.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.reading-toolbar__colors {
    display: flex;
    gap: var(--space-2, 6px);
    align-items: center;
}

.reading-toolbar__color {
    width: 22px;
    height: 22px;
    border-radius: var(--radius-full, 9999px);
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform var(--duration-fast, 150ms) var(--ease-out, ease),
                border-color var(--duration-fast, 150ms) var(--ease-out, ease);
}

.reading-toolbar__color:hover {
    transform: scale(1.2);
    border-color: rgba(255, 255, 255, 0.5);
}

[data-theme="light"] .reading-toolbar__color:hover {
    border-color: rgba(0, 0, 0, 0.3);
}

.reading-toolbar__color--gold { background: var(--rt-gold-solid); }
.reading-toolbar__color--blue { background: var(--rt-blue-solid); }
.reading-toolbar__color--green { background: var(--rt-green-solid); }
.reading-toolbar__color--pink { background: var(--rt-pink-solid); }

.reading-toolbar__divider {
    width: 1px;
    height: 24px;
    background: rgba(197, 160, 89, 0.2);
    margin: 0 var(--space-1, 4px);
}

[data-theme="light"] .reading-toolbar__divider {
    background: rgba(154, 123, 58, 0.2);
}

.reading-toolbar__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm, 4px);
    transition: color var(--duration-fast, 150ms) var(--ease-out, ease),
                background var(--duration-fast, 150ms) var(--ease-out, ease);
}

.reading-toolbar__btn:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

/* Feedback */
.reading-toolbar__feedback {
    position: fixed;

    /* Glass effect coerente con la toolbar */
    background: linear-gradient(180deg,
        rgba(8, 8, 8, 0.96) 0%,
        rgba(5, 5, 5, 0.92) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(197, 160, 89, 0.12);

    color: var(--color-accent);
    font-family: var(--font-ui);
    font-size: 0.75rem;
    padding: var(--space-1, 4px) var(--space-3, 12px);
    border-radius: var(--radius-sm, 4px);
    z-index: calc(var(--z-top, 999) + 2);
    opacity: 0;
    transition: opacity var(--duration-fast, 150ms) var(--ease-out, ease),
                transform var(--duration-fast, 150ms) var(--ease-out, ease);
    pointer-events: none;
}

[data-theme="light"] .reading-toolbar__feedback {
    background: linear-gradient(180deg,
        rgba(255, 255, 255, 0.96) 0%,
        rgba(248, 248, 248, 0.92) 100%);
    border: 1px solid rgba(154, 123, 58, 0.2);
}

.reading-toolbar__feedback.is-visible {
    opacity: 1;
    transform: translate(-50%, -120%);
}

.reading-toolbar__feedback.is-fading {
    opacity: 0;
    transform: translate(-50%, -150%);
}

/* === PANNELLO LATERALE ===
   Pattern: specchio della nav-sidebar (da destra invece che da sinistra)
   Stessi token: bg-secondary, border-color, space-6, radius, easing
   ============================================ */
.reading-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--rt-panel-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    z-index: var(--z-overlay, 200);
    transform: translateX(100%);
    transition: transform var(--duration-slow, 500ms) var(--ease-out);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.reading-panel.is-open {
    transform: translateX(0);
}

.reading-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
}

.reading-panel__title {
    font-family: var(--font-display);
    font-size: var(--text-lg, 1.1rem);
    font-weight: var(--weight-medium, 500);
    color: var(--color-accent);
    margin: 0;
}

.reading-panel__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: none;
    color: var(--text-tertiary);
    font-size: 1.4rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--duration-fast) var(--ease-out);
}

.reading-panel__close:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

/* Tabs */
.reading-panel__tabs {
    display: flex;
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
}

.reading-panel__tab {
    flex: 1;
    padding: var(--space-3, 10px) var(--space-4, 16px);
    border: none;
    background: none;
    color: var(--text-tertiary);
    font-family: var(--font-ui);
    font-size: var(--text-xs, 0.85rem);
    font-weight: var(--weight-medium, 500);
    letter-spacing: var(--tracking-wider, 0.05em);
    text-transform: uppercase;
    cursor: pointer;
    transition: color var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out);
    border-bottom: 2px solid transparent;
}

.reading-panel__tab:hover {
    color: var(--text-primary);
}

.reading-panel__tab.is-active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* Content */
.reading-panel__content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-3, 12px) var(--space-4, 16px);
}

.reading-panel__section.is-hidden {
    display: none;
}

.reading-panel__empty {
    color: var(--text-tertiary);
    font-family: var(--font-body);
    font-size: var(--text-sm, 0.9rem);
    font-style: italic;
    text-align: center;
    padding: var(--space-6) var(--space-2);
    line-height: var(--leading-normal, 1.5);
}

.reading-panel__counter {
    color: var(--text-muted);
    font-family: var(--font-ui);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest, 0.1em);
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: var(--space-2);
}

/* Items */
.reading-panel__item {
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    align-items: flex-start;
}

.reading-panel__item-icon {
    color: var(--color-accent);
    font-size: 1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.reading-panel__item-info {
    flex: 1;
    min-width: 0;
}

.reading-panel__item-label {
    display: block;
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: var(--text-xs, 0.85rem);
    font-weight: var(--weight-medium, 500);
}

.reading-panel__item-location {
    display: block;
    color: var(--text-muted);
    font-family: var(--font-ui);
    font-size: 0.75rem;
    margin-top: 2px;
}

.reading-panel__item-actions {
    display: flex;
    gap: var(--space-2, 6px);
    width: 100%;
    padding-left: var(--space-6, 24px);
}

.reading-panel__action-btn {
    padding: var(--space-1, 4px) var(--space-3, 10px);
    border: 1px solid var(--border-color);
    background: none;
    color: var(--text-secondary);
    font-family: var(--font-ui);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider, 0.05em);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: color var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
}

.reading-panel__action-btn:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-white);
}

.reading-panel__action-btn--danger:hover {
    color: var(--color-white);
    border-color: var(--rt-pink-solid);
    background: var(--rt-pink-solid);
}

/* Excerpt text */
.reading-panel__excerpt-text {
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: var(--text-sm, 0.9rem);
    font-style: italic;
    line-height: var(--leading-normal, 1.5);
    margin: 0 0 var(--space-1) 0;
    padding: 0;
    border: none;
    width: 100%;
}

.reading-panel__item--excerpt {
    flex-direction: column;
}

/* Add bookmark button */
.reading-panel__add-btn {
    padding: var(--space-3, 12px) var(--space-5, 20px);
    border: none;
    border-top: 1px solid var(--border-subtle);
    background: none;
    color: var(--color-accent);
    font-family: var(--font-ui);
    font-size: var(--text-xs, 0.85rem);
    font-weight: var(--weight-medium, 500);
    letter-spacing: var(--tracking-wide, 0.025em);
    cursor: pointer;
    text-align: center;
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
    flex-shrink: 0;
}

.reading-panel__add-btn:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

/* === STATO SINCRONIZZAZIONE === */
.reading-panel__status {
    padding: var(--space-3, 10px) var(--space-5, 20px) var(--space-4, 16px);
    margin-bottom: env(safe-area-inset-bottom, 0px);
    border-top: 1px solid var(--border-subtle);
    font-family: var(--font-ui);
    font-size: 0.7rem;
    letter-spacing: var(--tracking-wide, 0.03em);
    text-align: center;
    flex-shrink: 0;
}

.reading-panel__status--cloud {
    color: var(--rt-green-solid);
    opacity: 0.7;
}

.reading-panel__status--local {
    color: var(--text-muted);
}

/* === NOTIFICHE === */
.reading-notification {
    position: fixed;
    bottom: var(--space-6, 24px);
    left: 50%;
    transform: translateX(-50%) translateY(20px);

    /* Glass effect coerente */
    background: linear-gradient(180deg,
        rgba(8, 8, 8, 0.96) 0%,
        rgba(5, 5, 5, 0.92) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(197, 160, 89, 0.12);

    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: var(--text-xs, 0.85rem);
    padding: var(--space-3, 10px) var(--space-5, 20px);
    border-radius: var(--radius-md);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.02) inset,
        0 8px 24px rgba(0, 0, 0, 0.4);
    z-index: calc(var(--z-top, 999) + 3);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out),
                transform var(--duration-normal) var(--ease-out);
}

[data-theme="light"] .reading-notification {
    background: linear-gradient(180deg,
        rgba(255, 255, 255, 0.96) 0%,
        rgba(248, 248, 248, 0.92) 100%);
    border: 1px solid rgba(154, 123, 58, 0.2);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.5) inset,
        0 8px 24px rgba(0, 0, 0, 0.15);
}

.reading-notification.is-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.reading-notification.is-fading {
    opacity: 0;
    transform: translateX(-50%) translateY(-10px);
}

/* === ANIMAZIONI === */
@keyframes rtFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* === RESPONSIVE === */

/* Tablet (iPad) */
@media (max-width: 1024px) {
    .reading-panel {
        width: var(--sidebar-width, 320px);
    }
}

/* Smartphone */
@media (max-width: 768px) {
    .reading-panel {
        width: 100%;
    }

    .reading-toolbar {
        padding: var(--space-2);
        gap: 2px;
    }

    .reading-toolbar__color {
        width: 28px;
        height: 28px;
    }

    .reading-toolbar__btn {
        width: 36px;
        height: 36px;
    }

    .reading-panel__content {
        padding: var(--space-3) var(--space-3);
    }

    .reading-panel__item-actions {
        padding-left: 0;
    }
}

/* Touch: bottoni piu grandi per dita */
@media (pointer: coarse) {
    .reading-toolbar__color {
        width: 32px;
        height: 32px;
    }

    .reading-toolbar__btn {
        width: 40px;
        height: 40px;
    }

    .reading-toolbar {
        padding: var(--space-2) var(--space-3);
        gap: var(--space-2, 6px);
    }

    .reading-panel__action-btn {
        padding: var(--space-2) var(--space-4, 14px);
        font-size: 0.75rem;
    }

    .highlight-remove-btn {
        padding: var(--space-2) var(--space-3);
        font-size: 0.85rem;
    }
}

/* Marker: su schermi piccoli diventa inline */
@media (max-width: 1024px) {
    .bookmark-marker {
        position: relative;
        left: auto;
        top: auto;
        display: inline-block;
        margin-right: var(--space-1, 4px);
        vertical-align: baseline;
    }
}

/* Evita che il pannello copra il contenuto su desktop */
@media (min-width: 1200px) {
    body.reading-panel-open .main {
        transition: margin-right var(--duration-normal) var(--ease-out);
        margin-right: var(--rt-panel-width);
    }
}