/* Header */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 var(--space-md);
    gap: var(--space-sm);
    z-index: 100;
    transition: background var(--duration) var(--ease);
}

.header-back {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background var(--duration) var(--ease);
}
.header-back[hidden] {
    display: none;
}
.header-back:hover { background: var(--color-bg-tertiary); }

.header-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 700;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    max-width: calc(100% - 140px);
    overflow: hidden;
    text-overflow: ellipsis;
    pointer-events: none;
}

.header-logo {
    height: 36px;
    width: auto;
    object-fit: contain;
}
.header-logo[hidden] {
    display: none;
}
/* On small screens, hide logo when section title is visible to prevent overlap */
@media (max-width: 600px) {
    .app-header:has(.header-title:not([hidden])) .header-logo {
        display: none;
    }
}
.header-spacer {
    flex: 1;
}

.header-actions {
    display: flex;
    gap: var(--space-xs);
}

/* Icon button */
.btn-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    transition: background var(--duration) var(--ease);
}
.btn-icon:hover { background: var(--color-bg-tertiary); }

/* Primary button */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-primary);
    color: #fff;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: background var(--duration) var(--ease), transform 0.1s;
}
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-primary:active { transform: scale(0.97); }

/* Card */
.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--duration) var(--ease), transform var(--duration) var(--ease);
    cursor: pointer;
}
.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.card-thumb {
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    background: #fff;
}
#pdf-grid .card-thumb {
    aspect-ratio: 3/4;
    object-fit: cover;
}
/* Placeholder per prodotti senza immagine (div, non img) */
div.card-thumb {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary) url("/app/assets/img/placeholder.svg") center / 48px no-repeat;
}
.card-body {
    padding: var(--space-md);
}
.card-title {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9375rem;
    margin-bottom: var(--space-xs);
}
.card-subtitle {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

/* Search input */
.search-container {
    position: relative;
}
.search-input {
    width: 100%;
    padding: 14px 16px 14px 44px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 15px;
    background: var(--color-bg-tertiary);
    color: var(--color-text);
    transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease), background var(--duration) var(--ease);
}
.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-bg-card);
    box-shadow: 0 0 0 3px rgba(238, 28, 37, 0.15);
}
.search-input::placeholder {
    color: var(--color-text-secondary);
}
.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--color-text-secondary);
    pointer-events: none;
}
.search-clear {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    border: none;
    background: var(--color-text-secondary);
    color: var(--color-bg);
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: background var(--duration) var(--ease);
}
.search-clear.visible {
    display: flex;
}
.search-clear:hover {
    background: var(--color-text);
}

/* Grid */
.grid {
    display: grid;
    gap: var(--space-md);
    padding: var(--space-md);
    max-width: var(--max-width);
    margin: 0 auto;
}
.grid-1 { grid-template-columns: 1fr; max-width: 700px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 767px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

/* Segmented control (tabs sottocategorie) */
.segmented {
    display: flex;
    gap: var(--space-xs);
    padding: var(--space-md);
    max-width: var(--max-width);
    margin: 0 auto;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.segmented-btn {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    background: var(--color-bg-tertiary);
    transition: background var(--duration) var(--ease), color var(--duration) var(--ease);
}
.segmented-btn.active {
    background: var(--color-primary);
    color: #fff;
}

/* Overlay (pdf viewer, lightbox) */
.overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
}
.overlay-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 var(--space-md);
    gap: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}
.overlay-header .header-title { flex: 1; }
.overlay-body {
    flex: 1;
    overflow: auto;
}

/* Section container */
.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-md);
}

/* ═══ SETTINGS MODAL ═══ */
.settings-modal {
    position: fixed;
    inset: 0;
    z-index: 400;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration) var(--ease);
}
.settings-modal.active {
    opacity: 1;
    pointer-events: auto;
}
.settings-modal-content, .changelog-content {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    width: min(400px, 90vw);
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform var(--duration) var(--ease);
}
.settings-modal.active .settings-modal-content,
.settings-modal.active .changelog-content {
    transform: translateY(0);
}
.settings-modal-header, .changelog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}
.settings-modal-title, .changelog-header h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 500;
}
.settings-close-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    transition: background var(--duration) var(--ease);
}
.settings-close-btn:hover {
    background: var(--color-bg-tertiary);
}

/* Version section */
.settings-version-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-md);
}
.settings-version-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}
.settings-version-number {
    font-weight: 600;
    font-size: 1rem;
    margin-left: var(--space-sm);
}
.settings-update-btn {
    font-size: 0.8125rem;
    padding: var(--space-sm) var(--space-md);
}
.settings-update-btn.updating svg {
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Changelog button */
.settings-changelog-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    transition: background var(--duration) var(--ease);
}
.settings-changelog-btn:hover {
    background: var(--color-bg-tertiary);
}

/* Changelog entries */
.changelog-entry {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border);
}
.changelog-entry:last-child { border-bottom: none; }
.changelog-entry-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}
.changelog-version-tag {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-primary);
}
.changelog-date {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}
.changelog-entry p {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-text-secondary);
    margin: 0;
}

/* ═══ UPDATE TOAST ═══ */
.update-toast {
    position: fixed;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-text);
    color: var(--color-bg);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    z-index: 500;
    opacity: 0;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
    max-width: min(400px, 90vw);
}
.update-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ── Menu panel ── */
.menu-overlay {
    position: fixed;
    inset: 0;
    z-index: 250;
    background: rgba(0, 0, 0, 0);
    transition: background 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
}
.menu-overlay.open {
    background: rgba(0, 0, 0, 0.45);
    pointer-events: auto;
}
.menu-overlay.no-transition {
    transition: none;
}
.menu-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    max-width: 85vw;
    z-index: 260;
    background: var(--color-bg);
    border-left: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    transform: translate3d(100%, 0, 0);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}
.menu-panel.open {
    transform: translate3d(0, 0, 0);
}
.menu-panel.no-transition {
    transition: none;
}
.menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}
.menu-header-title {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.menu-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--color-text-secondary);
    cursor: pointer;
}
.menu-item[hidden] {
    display: none;
}
.menu-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: none;
    border: none;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.875rem;
    cursor: pointer;
    transition: background 0.15s ease;
}
.menu-item:hover {
    background: var(--color-bg-tertiary);
}
.menu-item-label {
    color: var(--color-text);
}
.menu-item-value {
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.8125rem;
}
.menu-divider {
    height: 8px;
    background: var(--color-bg-tertiary);
}
.menu-collections-title {
    padding: 10px var(--space-lg) 6px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
}
.menu-collection-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 10px var(--space-lg);
    background: none;
    border: none;
    border-left: 3px solid transparent;
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: background var(--duration) var(--ease);
}
.menu-collection-item:hover {
    background: var(--color-bg-tertiary);
}
.menu-collection-item.active {
    font-weight: 600;
    background: rgba(238, 28, 37, 0.04);
    border-left-color: var(--color-primary);
}
.menu-collection-count {
    font-size: 0.6875rem;
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}
.menu-spacer {
    flex: 1;
}
.menu-contacts {
    padding: var(--space-lg);
}
.menu-section-title {
    font-family: var(--font-display);
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}
.menu-contacts-body {
    font-size: 0.8125rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}
.menu-contacts-body strong {
    color: var(--color-text);
}
.menu-contacts-links {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.8125rem;
}
.menu-contacts-links a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}
.menu-contacts-links a:hover {
    text-decoration: underline;
}
.menu-contacts-links span {
    color: var(--color-text-secondary);
}
.menu-save-contact {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    padding: 10px 16px;
    width: 100%;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease;
}
.menu-save-contact:hover {
    background: var(--color-bg-card);
}
.menu-save-contact svg {
    color: var(--color-primary);
    flex-shrink: 0;
}
.menu-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-lg);
    border-top: 1px solid var(--color-border);
}
.menu-version {
    font-size: 0.6875rem;
    color: var(--color-text-secondary);
}

/* Menu footer actions (icon-only buttons) */
.menu-footer-actions {
    display: flex;
    gap: 4px;
    align-items: center;
}
.menu-footer-btn {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 6px;
    opacity: 0.6;
    transition: opacity 0.15s ease;
}
.menu-footer-btn:hover {
    opacity: 1;
}

/* Install tooltip */
.install-tooltip {
    position: absolute;
    bottom: calc(100% + 12px);
    right: -12px;
    background: rgb(255, 255, 255);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    color: rgb(26, 26, 26);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    padding: 10px 16px;
    border-radius: 10px;
    white-space: nowrap;
    visibility: hidden;
    transform: translateY(6px);
    transition: transform 0.3s ease;
    pointer-events: none;
    z-index: 10;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(0, 0, 0, 0.06);
}
.install-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    right: 18px;
    border: 7px solid transparent;
    border-top-color: #fff;
}
.install-tooltip.visible {
    visibility: visible;
    transform: translateY(0);
}

/* QR Share Modal */
.qr-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 400;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.qr-modal.active {
    opacity: 1;
    visibility: visible;
}
.qr-modal-content {
    background: var(--color-bg-card);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    max-width: 320px;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}
.qr-modal.active .qr-modal-content {
    transform: scale(1);
}
.qr-modal-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: 8px;
}
.qr-modal-subtitle {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}
.qr-code-container {
    background: white;
    padding: 16px;
    border-radius: 12px;
    display: inline-block;
    margin-bottom: 16px;
}
.qr-code-container canvas {
    display: block;
}
.qr-url {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    word-break: break-all;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
    transition: background 0.2s ease, color 0.2s ease;
}
.qr-url:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}
.qr-url.copied {
    color: var(--color-primary);
}
.qr-url svg {
    flex-shrink: 0;
    opacity: 0.6;
}
.qr-url:hover svg {
    opacity: 1;
}
.qr-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}
.qr-action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    padding: 10px 18px;
    border-radius: 8px;
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.qr-action-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}
.qr-share-btn {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}
.qr-close-btn {
    background: var(--color-bg-tertiary);
    border: none;
    padding: 12px 32px;
    border-radius: 8px;
    color: var(--color-text);
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease;
}
.qr-close-btn:hover {
    background: var(--color-border);
}