* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #fff;
    --text-color: #333;
    --text-secondary: #666;
    --text-title: #222;
    --border-color: #ddd;
    --bg-info: #f9f9f9;
    --bg-button: #f5f5f5;
    --bg-button-hover: #e0e0e0;
    --bg-item: #fff;
    --shadow: none;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    padding: 20px;
    max-width: 900px;
    margin: 0 auto;
    transition: background-color 0.3s, color 0.3s;
}

/* Dark Mode */
body.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-title: #fff;
    --border-color: #444;
    --bg-info: #2a2a2a;
    --bg-button: #333;
    --bg-button-hover: #444;
    --bg-item: #2a2a2a;
}

/* Paper Mode */
body.paper-mode {
    --bg-color: #f5f1e8;
    --text-color: #3e3e3e;
    --text-secondary: #6e6e6e;
    --text-title: #2a2a2a;
    --border-color: #d4c5a9;
    --bg-info: #ede8dd;
    --bg-button: #e8e0d1;
    --bg-button-hover: #ddd4c2;
    --bg-item: #f9f6f0;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Black Mode */
body.black-mode {
    --bg-color: #000000;
    --text-color: #ffffff;
    --text-secondary: #cccccc;
    --text-title: #ffffff;
    --border-color: #333333;
    --bg-info: #1a1a1a;
    --bg-button: #1a1a1a;
    --bg-button-hover: #2a2a2a;
    --bg-item: #1a1a1a;
}

.header-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    gap: 10px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Sticky Story Banner */
.sticky-story-banner {
    position: fixed;
    top: 6px;
    left: 50%;
    transform: translateX(-50%) translateY(-120%);
    width: calc(100% - 40px);
    max-width: 860px;
    z-index: 999;
    background-color: var(--bg-color);
    /* spazio destro riservato al badge progresso (absolute) */
    padding: 8px 64px 8px 12px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    text-align: center;
    overflow: hidden;
    box-sizing: border-box;
}

.sticky-story-banner.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.sticky-banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
}

.sticky-story-type {
    font-size: 0.65em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 2px 8px;
    border-radius: 4px;
}

.sticky-story-type.type-main {
    background-color: rgba(13, 110, 253, 0.15);
    color: #0d6efd;
}

.sticky-story-type.type-side {
    background-color: rgba(13, 202, 240, 0.15);
    color: #0dcaf0;
}

.sticky-story-type,
.sticky-story-number {
    flex-shrink: 0;
}

.sticky-story-title {
    font-weight: 600;
    font-size: 0.9em;
    color: var(--text-title);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    flex: 1 1 0%;
    max-width: 100%;
    text-align: center;
}

.sticky-story-number {
    font-size: 0.75em;
    font-weight: 600;
    color: var(--text-secondary);
    background-color: var(--bg-button);
    padding: 2px 8px;
    border-radius: 10px;
}

.sticky-story-expansion {
    font-size: 0.7em;
    color: var(--text-secondary);
    margin-top: 2px;
    max-width: 100%;
    padding: 0 4px;
    box-sizing: border-box;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sticky-progress-badge {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75em;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 4px 10px;
    border-radius: 12px;
    min-width: 42px;
    text-align: center;
    box-shadow: 0 2px 6px rgba(102, 126, 234, 0.4);
}

@media (max-width: 576px) {
    .sticky-banner-content {
        flex-direction: column;
        align-items: center;
        gap: 6px;
    }

    .sticky-story-title {
        flex: none;
        width: 100%;
        white-space: normal;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
        line-clamp: 2;
        overflow: hidden;
        word-break: break-word;
        overflow-wrap: anywhere;
    }

    .sticky-progress-badge {
        top: 10px;
        transform: none;
    }

    h1 {
        word-break: break-word;
        overflow-wrap: anywhere;
    }

    .header-actions {
        flex-wrap: wrap;
        row-gap: 8px;
    }

    .header-actions-right {
        flex-shrink: 0;
        margin-left: auto;
    }
}

.header-actions.fixed {
    position: fixed;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 40px);
    max-width: 860px;
    z-index: 1000;
    background-color: var(--bg-color);
    padding: 10px 15px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
}

/* Con banner visibile la posizione verticale dell’header è impostata da JS (syncChromeLayout) */

.header-actions.fixed.hidden {
    transform: translateX(-50%) translateY(-120%);
    opacity: 0;
    pointer-events: none;
}

/* Placeholder per mantenere lo spazio quando l'header è fisso */
.header-placeholder {
    display: none;
    height: 56px;
    margin-bottom: 20px;
}

.header-placeholder.active {
    display: block;
}

.header-actions-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.back-button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background-color: var(--bg-button);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-color);
    font-size: 14px;
    transition: background-color 0.2s;
}

.back-button:hover {
    background-color: var(--bg-button-hover);
}

.theme-selector {
    position: relative;
}

.theme-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    width: 36px;
    height: 36px;
    background-color: var(--bg-button);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.theme-button:hover {
    background-color: var(--bg-button-hover);
}

.theme-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 5px;
    background-color: var(--bg-item);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    min-width: 150px;
    z-index: 1000;
    display: none;
}

.theme-dropdown.show {
    display: block;
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    color: var(--text-color);
    cursor: pointer;
    transition: background-color 0.2s;
}

.theme-option-label {
    flex: 1;
}

.theme-check {
    display: none;
    color: var(--text-color);
}

.theme-option.active .theme-check {
    display: inline;
}

.theme-option:hover {
    background-color: var(--bg-button);
}

.theme-option.active {
    background-color: var(--bg-info);
    font-weight: 600;
}

.font-size-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.font-size-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    width: 36px;
    height: 36px;
    background-color: var(--bg-button);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.font-size-button:hover {
    background-color: var(--bg-button-hover);
}

/* Language selector */
.language-selector {
    position: relative;
}

.language-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    width: 36px;
    height: 36px;
    background-color: var(--bg-button);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.language-button:hover {
    background-color: var(--bg-button-hover);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 5px;
    background-color: var(--bg-item);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    min-width: 180px;
    z-index: 1000;
    display: none;
}

.language-dropdown.show {
    display: block;
}

.language-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    color: var(--text-color);
    cursor: pointer;
    transition: background-color 0.2s;
}

.language-option:hover {
    background-color: var(--bg-button);
}

.language-option.active {
    background-color: var(--bg-info);
    font-weight: 600;
}

.font-size-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 5px;
    background-color: var(--bg-item);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    min-width: 200px;
    padding: 15px;
    z-index: 1000;
    display: none;
}

@media (max-width: 768px) {
    .font-size-dropdown {
        position: fixed;
        left: 50%;
        right: auto;
        top: 60px;
        transform: translateX(-50%);
        min-width: 280px;
        max-width: 90vw;
    }
    
    .font-size-slider-container {
        justify-content: center;
    }
}

.font-size-dropdown.show {
    display: block;
}

/* Titolo dropdown */
.dropdown-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    padding: 8px 12px 6px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 6px;
}

/* Aggiusta padding per font-size-dropdown */
.font-size-dropdown .dropdown-title {
    margin: -15px -15px 12px -15px;
    padding: 12px 15px 8px;
}

.font-size-slider-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.font-size-slider {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
}

.font-size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--text-color);
    cursor: pointer;
    border: 2px solid var(--bg-color);
}

.font-size-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--text-color);
    cursor: pointer;
    border: 2px solid var(--bg-color);
}

.font-size-value {
    min-width: 40px;
    text-align: center;
    font-weight: 600;
    color: var(--text-color);
}

h1 {
    font-size: 2em;
    margin-bottom: 10px;
    color: var(--text-title);
}

h2 {
    font-size: 1em;
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-weight: normal;
    font-style: italic;
}

.story-info {
    margin-bottom: 20px;
    padding: 15px;
    background-color: var(--bg-info);
    border-radius: 4px;
    box-shadow: var(--shadow);
}

.info-row {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
    margin-bottom: 15px;
}

.info-row:last-child {
    margin-bottom: 0;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 500;
}

.badge-main {
    background-color: #007bff;
    color: white;
}

.badge-side {
    background-color: #6c757d;
    color: white;
}

.badge-official {
    background-color: #28a745;
    color: white;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.badge-verified {
    background-color: #17a2b8;
    color: white;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95em;
    padding: 8px 12px;
    background-color: var(--bg-item);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.info-item-icon {
    color: var(--text-secondary);
    font-size: 18px;
}

.info-label {
    font-weight: 600;
    color: var(--text-secondary);
    margin-right: 4px;
}

.info-value {
    color: var(--text-color);
}

.official-url-button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background-color: transparent;
    color: var(--text-color);
    text-decoration: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.9em;
    transition: all 0.2s;
}

.official-url-button:hover {
    background-color: var(--bg-button);
    border-color: var(--text-secondary);
}

hr {
    margin: 25px 0;
    border: none;
    border-top: 1px solid var(--border-color);
}

.content {
    margin-top: 30px;
    font-size: 1.1em;
    color: var(--text-color);
    box-shadow: var(--shadow);
}

body.paper-mode .content {
    box-shadow: none;
}

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: rgba(0, 0, 0, 0.1);
    z-index: 9999;
}

.reading-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #007bff, #0056b3);
    width: 0%;
    transition: width 0.1s ease-out;
}

body.dark-mode .reading-progress {
    background-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .reading-progress-bar {
    background: linear-gradient(90deg, #4a9eff, #2a7fff);
}

body.paper-mode .reading-progress {
    background-color: rgba(90, 74, 58, 0.2);
}

body.paper-mode .reading-progress-bar {
    background: linear-gradient(90deg, #8b7355, #6b5a45);
}

body.black-mode .reading-progress {
    background-color: rgba(255, 255, 255, 0.1);
}

body.black-mode .reading-progress-bar {
    background: linear-gradient(90deg, #666666, #444444);
}

.reading-progress-percentage {
    position: fixed;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
}

.reading-progress-percentage.show {
    opacity: 1;
}

body.dark-mode .reading-progress-percentage {
    background-color: rgba(255, 255, 255, 0.9);
    color: #1a1a1a;
}

body.paper-mode .reading-progress-percentage {
    background-color: rgba(90, 74, 58, 0.9);
    color: #f5f1e8;
}

body.black-mode .reading-progress-percentage {
    background-color: rgba(255, 255, 255, 0.9);
    color: #000000;
}

.content p {
    margin-bottom: 1.5em;
    color: var(--text-color);
}

.content h1,
.content h2,
.content h3,
.content h4,
.content h5,
.content h6 {
    color: var(--text-title);
}

.content a {
    color: var(--text-color);
    text-decoration: underline;
}

body.dark-mode .content a {
    color: #4a9eff;
}

body.paper-mode .content a {
    color: #5a4a3a;
}

/* Forza il colore del testo per elementi con stili inline */
body.dark-mode .content,
body.dark-mode .content p,
body.dark-mode .content span,
body.dark-mode .content font,
body.dark-mode .content div,
body.dark-mode .content em,
body.dark-mode .content strong,
body.dark-mode .content b,
body.dark-mode .content i {
    color: #e0e0e0 !important;
}

body.paper-mode .content,
body.paper-mode .content p,
body.paper-mode .content span,
body.paper-mode .content font,
body.paper-mode .content div,
body.paper-mode .content em,
body.paper-mode .content strong,
body.paper-mode .content b,
body.paper-mode .content i {
    color: #3e3e3e !important;
}

body.black-mode .content,
body.black-mode .content p,
body.black-mode .content span,
body.black-mode .content font,
body.black-mode .content div,
body.black-mode .content em,
body.black-mode .content strong,
body.black-mode .content b,
body.black-mode .content i {
    color: #ffffff !important;
}

.navigation-buttons {
    display: flex;
    gap: 10px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.nav-button {
    flex: 1;
    padding: 12px 16px;
    background-color: var(--bg-button);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-color);
    text-align: center;
    transition: background-color 0.2s;
    font-size: 0.9em;
}

.nav-button:hover {
    background-color: var(--bg-button-hover);
}

.nav-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.nav-button.prev {
    text-align: left;
}

.nav-button.next {
    text-align: right;
}

.nav-button-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.nav-button-label {
    font-size: 0.85em;
    color: var(--text-secondary);
}

.nav-button-type {
    font-size: 0.7em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 2px 6px;
    border-radius: 3px;
    display: inline-block;
    margin-bottom: 4px;
}

.nav-button-type.type-main {
    background-color: rgba(13, 110, 253, 0.15);
    color: #0d6efd;
}

.nav-button-type.type-side {
    background-color: rgba(13, 202, 240, 0.15);
    color: #0dcaf0;
}

.nav-button.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Navigation Filter Toggle */
.navigation-filter {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.side-story-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}

.side-story-toggle input {
    display: none;
}

.toggle-slider {
    width: 44px;
    height: 24px;
    background-color: var(--border-color);
    border-radius: 12px;
    position: relative;
    transition: background-color 0.3s;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background-color: var(--bg-color);
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: transform 0.3s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.side-story-toggle input:checked + .toggle-slider {
    background-color: #0d6efd;
}

.side-story-toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

.toggle-label {
    font-size: 0.9em;
    color: var(--text-secondary);
}

.decorative-separator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 30px 0;
    position: relative;
}

.decorative-separator::before,
.decorative-separator::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-color), transparent);
}

.decorative-separator-icon {
    margin: 0 15px;
    color: var(--text-secondary);
    font-size: 20px;
}

/* Loader Fullscreen */
#page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(255, 255, 255, 0.95);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}

#page-loader .spinner {
    width: 60px;
    height: 60px;
    border: 6px solid transparent;
    border-top-color: #0d6efd;
    border-right-color: #0d6efd;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Nascondi il loader quando la pagina è caricata */
#page-loader.fade-out {
    opacity: 0;
    pointer-events: none;
}

/* Dark mode per il loader */
body.dark-mode #page-loader {
    background-color: rgba(26, 26, 26, 0.95);
}

body.dark-mode #page-loader .spinner {
    border-top-color: #4a9eff;
    border-right-color: #4a9eff;
}

/* Paper mode per il loader */
body.paper-mode #page-loader {
    background-color: rgba(245, 241, 232, 0.95);
}

body.paper-mode #page-loader .spinner {
    border-top-color: #8b7355;
    border-right-color: #8b7355;
}

/* Black mode per il loader */
body.black-mode #page-loader {
    background-color: rgba(0, 0, 0, 0.95);
}

body.black-mode #page-loader .spinner {
    border-top-color: #666666;
    border-right-color: #666666;
}