* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

html, body {
    margin: 0;
    padding: 0;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    min-height: 100%;
    height: 100%;
    transition: background-color var(--duration-base) var(--ease-out), color var(--duration-base) var(--ease-out);
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.ad-slot {
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    min-height: 90px;
    background-color: var(--color-surface-alt);
}

.ad-top-banner {
    width: 100%;
    border-bottom: 1px solid var(--color-border);
}

.ad-reader-strip {
    width: 100%;
    min-height: 90px;
    border-bottom: 1px solid var(--color-border);
}

.app-footer {
    border-top: 1px solid var(--color-border);
    padding: 1rem 1.25rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.footer-inner a {
    color: var(--color-text-muted);
    display: inline-flex;
    align-items: center;
    transition: color 0.15s ease;
}

.footer-inner a:hover {
    color: var(--color-primary);
}

.footer-contact-label {
    color: var(--color-text-muted);
}

.footer-version {
    color: var(--color-text-muted);
    opacity: 0.6;
    font-size: 0.75rem;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--color-text);
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(1.9rem, 4vw, 2.6rem);
}

h2 {
    font-size: clamp(1.35rem, 2.6vw, 1.7rem);
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

    a:hover {
        color: var(--color-secondary-hover);
        text-decoration: underline;
    }

button, input, select, textarea {
    font-family: inherit;
    font-size: 1rem;
}

:focus-visible {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
    transition: outline-offset var(--duration-fast) var(--ease-out);
}

h1:focus-visible {
    /* Blazor's FocusOnNavigate programmatically focuses the page's h1 after
       every route change for screen readers - headings aren't interactive,
       so skip the visible ring that would otherwise flash on every navigation. */
    outline: none;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(14px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.92);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes popIn {
    0% {
        opacity: 0;
        transform: scale(0.6) rotate(-20deg);
    }

    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

@keyframes shimmer {
    from {
        background-position: -200% 0;
    }

    to {
        background-position: 200% 0;
    }
}

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

.page-container {
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    padding: 1.5rem 1.25rem 3rem;
    animation: fadeInUp var(--duration-slow) var(--ease-out) both;
}

.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1.75rem;
    transition: box-shadow var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}

    .card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-1px);
    }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 44px;
    padding: 0.65rem 1.4rem;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--duration-base) var(--ease-out),
        background-position var(--duration-slow) var(--ease-out),
        border-color var(--duration-base) var(--ease-out),
        opacity var(--duration-base) var(--ease-out),
        transform var(--duration-fast) var(--ease-spring),
        box-shadow var(--duration-base) var(--ease-out);
}

    .btn:active:not(:disabled) {
        transform: scale(0.96);
    }

    .btn:disabled {
        opacity: 0.55;
        cursor: not-allowed;
    }

.btn-primary {
    background-image: var(--gradient-primary);
    background-size: 140% 140%;
    background-position: 0% 50%;
    color: var(--color-primary-contrast);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08), 0 4px 12px color-mix(in srgb, var(--color-primary-strong) 35%, transparent);
}

    .btn-primary:hover:not(:disabled) {
        background-position: 100% 50%;
        transform: translateY(-1px);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1), 0 10px 24px color-mix(in srgb, var(--color-primary-strong) 48%, transparent);
    }

.btn-secondary {
    background-color: transparent;
    color: var(--color-secondary);
    border-color: var(--color-secondary);
}

    .btn-secondary:hover:not(:disabled) {
        background-color: var(--color-surface-alt);
        transform: translateY(-1px);
    }

.btn-ghost {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

    .btn-ghost:hover:not(:disabled) {
        background-color: var(--color-surface-alt);
        transform: translateY(-1px);
    }

.btn-block {
    display: flex;
    width: auto;
    min-width: 180px;
    margin-left: auto;
    margin-right: auto;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 1rem;
}

    .form-field label {
        font-weight: 600;
        font-size: 0.9rem;
        color: var(--color-text-muted);
    }

    .form-field input, .form-field select {
        min-height: 44px;
        padding: 0.5rem 0.85rem;
        border: 1.5px solid var(--color-border);
        border-radius: var(--radius-sm);
        background-color: var(--color-surface);
        color: var(--color-text);
        transition: border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out);
    }

        .form-field input:focus, .form-field select:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-accent) 22%, transparent);
            outline: none;
        }

        .form-field input:disabled {
            background-color: var(--color-surface-alt);
            color: var(--color-text-muted);
        }

.form-error {
    color: var(--color-danger);
    font-size: 0.9rem;
    margin: -0.5rem 0 1rem;
    animation: fadeInUp var(--duration-base) var(--ease-out) both;
}

.form-hint {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.validation-message {
    display: block;
    color: var(--color-danger);
    font-size: 0.82rem;
    margin: -0.6rem 0 0.9rem;
    animation: fadeInUp var(--duration-fast) var(--ease-out) both;
}

.password-hints {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.9rem;
    margin: -0.5rem 0 1rem;
}

.password-hint {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.78rem;
    color: var(--color-text-muted);
    transition: color var(--duration-fast) var(--ease-out);
}

    .password-hint .icon {
        opacity: 0.35;
        transition: opacity var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
    }

    .password-hint.met {
        color: var(--color-success);
    }

        .password-hint.met .icon {
            opacity: 1;
            color: var(--color-success);
        }

.form-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.unsaved-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-warning);
    background-color: color-mix(in srgb, var(--color-warning) 14%, var(--color-surface));
    border-radius: var(--radius-pill);
    padding: 0.25rem 0.7rem;
    animation: fadeIn var(--duration-fast) var(--ease-out) both;
}

    .unsaved-badge .dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background-color: var(--color-warning);
        animation: pulseDot 1.6s var(--ease-in-out) infinite;
    }

@keyframes pulseDot {
    0%, 100% {
        opacity: 1;
    }

    50% {
        opacity: 0.35;
    }
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.25rem;
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-pill);
    font-size: 0.8rem;
    font-weight: 600;
    background-color: var(--color-surface-alt);
    color: var(--color-secondary);
}

.spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary-strong);
    border-radius: 50%;
    animation: spin 0.7s linear infinite, fadeIn var(--duration-base) var(--ease-out) both;
    margin: 3rem auto;
}

.skeleton {
    background: linear-gradient(90deg,
        var(--color-surface-alt) 25%,
        color-mix(in srgb, var(--color-surface-alt) 55%, var(--color-surface)) 50%,
        var(--color-surface-alt) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.4s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

.book-card-skeleton {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

    .book-card-skeleton .skeleton-cover {
        width: 100%;
        aspect-ratio: 3 / 4;
        border-radius: 0;
    }

    .book-card-skeleton .skeleton-body {
        padding: 0.85rem;
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .book-card-skeleton .skeleton-line {
        height: 0.7rem;
        width: 100%;
    }

        .book-card-skeleton .skeleton-line.short {
            width: 60%;
        }

.home-hero {
    max-width: 640px;
    margin: 1rem auto 2.5rem;
    text-align: center;
    padding: 2.75rem 1.5rem;
    border-radius: var(--radius-lg);
    background-color: var(--color-surface-alt);
    background-image: var(--gradient-mesh);
    animation: fadeInUp var(--duration-slow) var(--ease-out) both;
}

    .home-hero img {
        width: 64px;
        margin-bottom: 1rem;
    }

    .home-hero h1 {
        background-image: var(--gradient-text);
        background-clip: text;
        -webkit-background-clip: text;
        color: transparent;
    }

.centered-notice {
    max-width: 480px;
    margin: 3rem auto;
    text-align: center;
    padding: 2rem 1.5rem;
    animation: fadeInUp var(--duration-slow) var(--ease-out) both;
}

    .centered-notice img {
        width: 64px;
        margin-bottom: 1rem;
    }

.empty-state {
    text-align: center;
    padding: 2.5rem 1rem;
    animation: fadeIn var(--duration-slow) var(--ease-out) both;
}

.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 1.25rem;
    margin-top: 1.5rem;
}

    .book-grid > * {
        animation: fadeInUp var(--duration-slow) var(--ease-out) both;
        animation-delay: calc(var(--card-index, 0) * 45ms);
    }

.book-row-scroll {
    display: flex;
    gap: 1.25rem;
    margin-top: 1.5rem;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x proximity;
    padding-bottom: 0.6rem;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

    .book-row-scroll > * {
        flex: 0 0 190px;
        min-width: 0;
        scroll-snap-align: start;
        animation: fadeInUp var(--duration-slow) var(--ease-out) both;
        animation-delay: calc(var(--card-index, 0) * 45ms);
    }

    .book-row-scroll::-webkit-scrollbar,
    .book-grid::-webkit-scrollbar {
        height: 6px;
    }

    .book-row-scroll::-webkit-scrollbar-thumb,
    .book-grid::-webkit-scrollbar-thumb {
        background-color: var(--color-border);
        border-radius: var(--radius-pill);
    }

    .book-row-scroll::-webkit-scrollbar-track,
    .book-grid::-webkit-scrollbar-track {
        background: transparent;
    }

.book-card {
    display: flex;
    flex-direction: column;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out);
}

    .book-card:hover {
        transform: translateY(-6px) scale(1.015);
        box-shadow: var(--shadow-lg), 0 0 0 1px color-mix(in srgb, var(--color-primary) 25%, transparent);
        border-color: transparent;
    }

        .book-card:hover .book-card-cover {
            transform: scale(1.08);
        }

.book-card-cover-wrap {
    position: relative;
    overflow: hidden;
    background-color: var(--color-surface-alt);
}

.book-card-owned-badge {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-pill);
    background-color: var(--color-success);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
    z-index: 1;
}

    .book-card-owned-badge.is-premium {
        background-image: linear-gradient(120deg, #b8860b, #ffb300);
        color: #fff;
    }

.book-card-favorite {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background-color: rgba(20, 16, 12, 0.45);
    color: #fff;
    cursor: pointer;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    transition: transform var(--duration-fast) var(--ease-spring), background-color var(--duration-base) var(--ease-out);
}

    .book-card-favorite:hover {
        transform: scale(1.1);
    }

    .book-card-favorite.is-favorite {
        color: var(--color-danger);
        background-color: rgba(255, 255, 255, 0.85);
    }

.book-card-meta {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    margin-top: -0.15rem;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
    line-clamp: 1;
}

.book-card-cover {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    background-color: var(--color-surface-alt);
    display: block;
    transition: transform var(--duration-slow) var(--ease-out);
}

.book-card-body {
    padding: 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex: 1;
}

.book-card-title {
    font-weight: 700;
    font-size: 0.95rem;
    line-height: 1.25;
    min-height: calc(1.25em * 2);
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
}

.book-card-description {
    font-size: 0.8rem;
    line-height: 1.35;
    min-height: calc(1.35em * 3);
    color: var(--color-text-muted);
    margin: 0;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    line-clamp: 3;
}

.book-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
    padding-top: 0.4rem;
}

.book-card-price {
    font-weight: 700;
    color: var(--color-secondary);
}

.search-field {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 0.9rem;
    margin: 1rem 0;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-pill);
    background-color: var(--color-surface);
    color: var(--color-text-muted);
    transition: border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out);
}

    .search-field:focus-within {
        border-color: var(--color-accent);
        box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-accent) 22%, transparent);
    }

    .search-field input {
        flex: 1;
        border: none;
        outline: none;
        background: none;
        color: var(--color-text);
        font-size: 0.95rem;
    }

        .search-field input::-webkit-search-cancel-button {
            cursor: pointer;
        }

.list-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 1rem 0;
}

    .list-toolbar .search-field {
        flex: 1;
        min-width: 200px;
        margin: 0;
    }

.sort-field {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

    .sort-field select {
        padding: 0.5rem 0.8rem;
        border-radius: var(--radius-pill);
        border: 1.5px solid var(--color-border);
        background-color: var(--color-surface);
        color: var(--color-text);
    }

.tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 0.5rem;
}

.tab-button {
    position: relative;
    background: none;
    border: none;
    padding: 0.7rem 1rem;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: color var(--duration-fast) var(--ease-out);
}

    .tab-button::after {
        content: "";
        position: absolute;
        left: 0.4rem;
        right: 0.4rem;
        bottom: -1px;
        height: 3px;
        border-radius: var(--radius-pill);
        background-image: var(--gradient-brand);
        transform: scaleX(0);
        transform-origin: center;
        transition: transform var(--duration-base) var(--ease-spring);
    }

    .tab-button.active {
        color: var(--color-primary-strong);
    }

        .tab-button.active::after {
            transform: scaleX(1);
        }

.modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(20, 16, 12, 0.5);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
    animation: fadeIn var(--duration-base) var(--ease-out) both;
}

.modal-box {
    position: relative;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.85rem;
    max-width: 380px;
    width: 100%;
    text-align: center;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: scaleIn var(--duration-base) var(--ease-spring) both;
}

    .modal-box::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background-image: var(--gradient-brand);
    }

.reader-page {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    animation: fadeIn var(--duration-base) var(--ease-out) both;
}

.reader-toolbar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1rem;
    background-color: var(--color-surface-alt);
    background-image: var(--gradient-nav);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 5;
}

.reader-back {
    min-width: 40px;
    min-height: 40px;
    padding: 0.4rem;
    border-radius: 50%;
}

.reader-titles {
    display: flex;
    flex-direction: column;
    margin-right: auto;
    min-width: 0;
}

.reader-book-title {
    font-weight: 700;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 40vw;
}

.reader-doc-title {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.reader-select {
    padding: 0.4rem 0.7rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    color: var(--color-text);
    max-width: 200px;
}

.reader-doc-switch {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    text-align: left;
}

    .reader-doc-switch .icon {
        flex-shrink: 0;
        color: var(--color-text-muted);
    }

.reader-doc-switch-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.reader-doc-switch-badge {
    flex-shrink: 0;
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
}

.reader-status {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.reader-frame {
    flex: 1;
    width: 100%;
    min-height: 0;
    overflow: auto;
    background-color: #525659;
    display: flex;
    justify-content: center;
    touch-action: pan-x pan-y;
    padding-bottom: 4.5rem;
}

    .reader-frame canvas {
        display: block;
        flex-shrink: 0;
        margin: auto;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
    }

.reader-controls {
    position: fixed;
    bottom: 1.1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.45rem 0.75rem;
    border-radius: var(--radius-pill);
    background-color: color-mix(in srgb, var(--color-surface) 88%, transparent);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    z-index: 50;
    max-width: calc(100vw - 1rem);
    animation: fadeInUp var(--duration-slow) var(--ease-out) both;
}

.reader-controls-page {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    margin: 0;
}

.reader-controls-total {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.reader-zoom-value {
    min-width: 2.9rem;
    text-align: center;
}

.reader-controls-divider {
    width: 1px;
    align-self: stretch;
    background-color: var(--color-border);
    margin: 0 0.3rem;
}

.reader-pagejump-input {
    width: 3.4rem;
    padding: 0.3rem 0.4rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    color: var(--color-text);
    font-size: 0.85rem;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

    .reader-pagejump-input::-webkit-inner-spin-button,
    .reader-pagejump-input::-webkit-outer-spin-button {
        -webkit-appearance: none;
        margin: 0;
    }

.reader-favorite {
    min-width: 40px;
    min-height: 40px;
    padding: 0.4rem;
    border-radius: 50%;
    color: var(--color-text-muted);
}

    .reader-favorite.is-favorite {
        color: var(--color-danger);
    }

.reader-pagenav-btn {
    min-width: 36px;
    min-height: 36px;
    padding: 0.3rem;
    border-radius: 50%;
}

.reader-page-indicator {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    font-variant-numeric: tabular-nums;
    min-width: 3.4rem;
    text-align: center;
}

@media (max-width: 640px) {
    .reader-book-title {
        max-width: 60vw;
    }

    .reader-select {
        max-width: 140px;
    }

    .reader-controls {
        bottom: 0.75rem;
        gap: 0.15rem;
        padding: 0.35rem 0.55rem;
    }

    .reader-pagejump-input {
        width: 2.8rem;
    }

    .reader-zoom-value {
        display: none;
    }
}

.qr-modal {
    max-width: 340px;
}

.doc-list-modal {
    max-width: 380px;
    text-align: left;
}

    .doc-list-modal h3,
    .doc-list-modal > .form-hint {
        text-align: center;
    }

.doc-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 1rem 0 1.25rem;
    max-height: 320px;
    overflow-y: auto;
}

.doc-list-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.75rem 0.9rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    color: var(--color-text);
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    animation: fadeInUp var(--duration-base) var(--ease-out) both;
    animation-delay: calc(var(--card-index, 0) * 40ms);
    transition: background-color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out), transform var(--duration-fast) var(--ease-out);
}

    .doc-list-item:hover {
        background-color: var(--color-surface-alt);
        border-color: var(--color-primary-strong);
        transform: translateX(2px);
    }

    .doc-list-item .icon {
        color: var(--color-primary-strong);
        flex-shrink: 0;
    }

.book-detail-cover-wrap {
    position: relative;
    width: 140px;
    margin: 0 auto 1rem;
}

.book-detail-cover {
    position: relative;
    z-index: 1;
    width: 140px;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin: 0;
    display: block;
    box-shadow: var(--shadow-md);
    animation: scaleIn var(--duration-base) var(--ease-spring) both;
    transition: transform var(--duration-base) var(--ease-spring);
}

.book-detail-cover-wrap.premium-active .book-detail-cover {
    transform: scale(1.04);
}

.book-detail-cover-wrap .stack-page {
    position: absolute;
    inset: 0;
    aspect-ratio: 3 / 4;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg,
        color-mix(in srgb, #f59e0b 16%, var(--color-surface-alt)),
        color-mix(in srgb, #fbbf24 10%, var(--color-surface)));
    border: 1px solid color-mix(in srgb, #f59e0b 35%, var(--color-border));
    box-shadow: var(--shadow-sm);
    opacity: 0;
    transform: translate(0, 0) rotate(0deg) scale(0.92);
    transition: transform var(--duration-slow) var(--ease-spring), opacity var(--duration-base) var(--ease-out);
    z-index: 0;
}

.book-detail-cover-wrap.premium-active .stack-page-1 {
    opacity: 1;
    transform: translate(12px, 8px) rotate(7deg) scale(1);
}

.book-detail-cover-wrap.premium-active .stack-page-2 {
    opacity: 1;
    transform: translate(-12px, 11px) rotate(-9deg) scale(1);
    transition-delay: 0.06s;
}

.book-detail-cover-wrap.premium-active .stack-page-3 {
    opacity: 0.85;
    transform: translate(16px, -7px) rotate(11deg) scale(1);
    transition-delay: 0.12s;
}

.premium-glow {
    position: absolute;
    inset: -18px;
    border-radius: var(--radius-lg);
    background: radial-gradient(circle, rgba(245, 158, 11, 0.35), transparent 70%);
    opacity: 0;
    transition: opacity var(--duration-slow) var(--ease-out);
    z-index: -1;
    pointer-events: none;
}

.book-detail-cover-wrap.premium-active .premium-glow {
    opacity: 1;
    animation: pulseDot 1.8s ease-in-out infinite;
}

.premium-callout {
    color: #b45309;
    font-size: 0.82rem;
    font-weight: 600;
    text-align: center;
    margin: 0 0 0.75rem;
    animation: fadeInUp var(--duration-base) var(--ease-out) both;
}

.book-detail-desc {
    text-align: left;
    margin: 0.75rem 0 1rem;
}

.book-detail-price {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-secondary);
    margin-bottom: 1.25rem;
}

.qr-image {
    width: min(220px, 100%);
    aspect-ratio: 1 / 1;
    object-fit: contain;
    margin: 1rem auto;
    border-radius: var(--radius-md);
    background-color: #fff;
    padding: 0.6rem;
    display: block;
    animation: scaleIn var(--duration-base) var(--ease-spring) both;
}

.qr-countdown {
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
    font-variant-numeric: tabular-nums;
}

.error-banner {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.1rem;
    border-radius: var(--radius-md);
    background-color: color-mix(in srgb, var(--color-danger) 12%, var(--color-surface));
    border: 1px solid color-mix(in srgb, var(--color-danger) 35%, var(--color-border));
    color: var(--color-danger);
    margin-bottom: 1.25rem;
    font-size: 0.92rem;
    animation: fadeInUp var(--duration-base) var(--ease-out) both;
}

    .error-banner span {
        flex: 1;
    }

.btn-sm {
    min-height: 32px;
    padding: 0.3rem 0.9rem;
    font-size: 0.85rem;
}

.banner {
    padding: 0.85rem 1.1rem;
    border-radius: var(--radius-md);
    background-color: var(--color-surface-alt);
    color: var(--color-text);
    margin-bottom: 1.25rem;
    font-size: 0.92rem;
    animation: fadeInUp var(--duration-base) var(--ease-out) both;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid var(--color-danger);
}

#blazor-error-ui {
    /* Blazor's runtime toggles this to 'block' via inline style on an unhandled
       error - the inline style wins over any stylesheet display rule, so this
       is styled to read well as a block element rather than relying on flex. */
    background: var(--color-danger);
    color: white;
    top: 0;
    left: 0;
    box-shadow: var(--shadow-lg);
    box-sizing: border-box;
    display: none;
    padding: 0.85rem 3.25rem 0.85rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 2000;
    text-align: center;
    font-weight: 600;
    font-size: 0.95rem;
    animation: blazor-error-slide-down 0.25s ease-out;
}

#blazor-error-ui .icon {
    vertical-align: middle;
    margin-right: 0.5rem;
}

#blazor-error-ui .reload {
    display: inline-block;
    margin-left: 0.75rem;
    padding: 0.3rem 0.9rem;
    background: white;
    color: var(--color-danger);
    border-radius: var(--radius-pill);
    text-decoration: none;
    font-weight: 700;
    white-space: nowrap;
}

@keyframes blazor-error-slide-down {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

    #blazor-error-ui .dismiss {
        cursor: pointer;
        position: absolute;
        right: 1rem;
        top: 50%;
        transform: translateY(-50%);
        font-size: 1.1rem;
        line-height: 1;
    }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred.";
    }

.loading-progress {
    position: absolute;
    display: block;
    width: 8rem;
    height: 8rem;
    inset: 20vh 0 auto 0;
    margin: 0 auto 0 auto;
}

    .loading-progress circle {
        fill: none;
        stroke: var(--color-border);
        stroke-width: 0.6rem;
        transform-origin: 50% 50%;
        transform: rotate(-90deg);
    }

        .loading-progress circle:last-child {
            stroke: var(--color-primary-strong);
            stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
            transition: stroke-dasharray 0.05s ease-in-out;
        }

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
    color: var(--color-text);
}

    .loading-progress-text:after {
        content: var(--blazor-load-percentage-text, "Loading");
    }

code {
    color: #c02d76;
}

.password-section {
    margin-top: 1.25rem;
    border-radius: var(--radius-lg);
}

    .password-section summary {
        cursor: pointer;
        font-weight: 700;
        color: var(--color-secondary);
        font-family: var(--font-heading);
        font-size: 1.1rem;
        transition: color var(--duration-fast) var(--ease-out);
    }

        .password-section summary:hover {
            color: var(--color-secondary-hover);
        }

    .password-section .auth-form,
    .password-section form {
        margin-top: 1rem;
        animation: fadeInUp var(--duration-base) var(--ease-out) both;
    }

.auth-form {
    margin-top: 1.5rem;
}

.auth-switch {
    text-align: center;
    margin-top: 1.25rem;
}

.btn-link {
    background: none;
    border: none;
    color: var(--color-secondary);
    font-weight: 700;
    cursor: pointer;
    padding: 0;
    transition: color var(--duration-fast) var(--ease-out);
}

    .btn-link:hover {
        color: var(--color-secondary-hover);
        text-decoration: underline;
    }

.icon {
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
}

.icon-spin-in {
    animation: popIn var(--duration-base) var(--ease-spring) both;
}

.icon-badge {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: linear-gradient(135deg,
        color-mix(in srgb, var(--color-primary) 20%, var(--color-surface-alt)),
        color-mix(in srgb, var(--color-secondary) 14%, var(--color-surface-alt)));
    color: var(--color-primary-strong);
    margin: 0 auto 1rem;
    animation: popIn var(--duration-slow) var(--ease-spring) both;
}

.icon-badge-danger {
    background-image: none;
    background-color: color-mix(in srgb, var(--color-danger) 14%, var(--color-surface-alt));
    color: var(--color-danger);
}

.nav-bar {
    background-color: var(--glass-bg);
    background-image: var(--gradient-nav);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    box-shadow: 0 1px 0 var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.05rem;
    color: var(--color-text);
    transition: opacity var(--duration-fast) var(--ease-out);
}

    .nav-brand:hover {
        text-decoration: none;
        color: var(--color-text);
        opacity: 0.75;
    }

    .nav-brand img {
        height: 32px;
        width: auto;
    }

.nav-burger {
    display: none;
    margin-left: auto;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--color-text);
    cursor: pointer;
    min-height: 44px;
    min-width: 44px;
    transition: transform var(--duration-fast) var(--ease-spring);
}

    .nav-burger:active {
        transform: scale(0.9);
    }

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-left: auto;
}

    .nav-links a {
        position: relative;
        color: var(--color-text);
        font-weight: 600;
        padding: 0.4rem 0;
        transition: color var(--duration-fast) var(--ease-out);
    }

        .nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: var(--radius-pill);
            background-image: var(--gradient-brand);
            transform: scaleX(0);
            transition: transform var(--duration-base) var(--ease-spring);
        }

        .nav-links a.active {
            color: var(--color-primary-strong);
        }

            .nav-links a.active::after {
                transform: scaleX(1);
            }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-left: 0.5rem;
}

.theme-toggle {
    min-width: 44px;
    padding: 0.5rem;
    font-size: 1.1rem;
    border-radius: 50%;
}

@media (max-width: 640px) {
    .nav-burger {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-links {
        max-height: 0;
        overflow: hidden;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--glass-bg);
        -webkit-backdrop-filter: saturate(180%) blur(20px);
        backdrop-filter: saturate(180%) blur(20px);
        box-shadow: 0 1px 0 var(--color-border);
        padding: 0 1.25rem;
        flex-direction: column;
        align-items: stretch;
        gap: 0.9rem;
        opacity: 0;
        transition: max-height var(--duration-base) var(--ease-out),
            padding var(--duration-base) var(--ease-out),
            opacity var(--duration-fast) var(--ease-out);
    }

        .nav-links.open {
            max-height: 420px;
            padding: 1rem 1.25rem 1.25rem;
            opacity: 1;
        }

    .nav-actions {
        margin-left: 0;
        margin-top: 0.5rem;
        justify-content: space-between;
    }

    .page-container {
        padding: 1rem 1rem 2.5rem;
    }

    .book-grid:not(.modal-book-grid) {
        display: flex;
        gap: 0.85rem;
        overflow-x: auto;
        overflow-y: hidden;
        scroll-snap-type: x proximity;
        padding-bottom: 0.6rem;
        scrollbar-width: thin;
        scrollbar-color: var(--color-border) transparent;
    }

        .book-grid:not(.modal-book-grid) > * {
            flex: 0 0 190px;
            min-width: 0;
            scroll-snap-align: start;
        }

    .book-row-scroll {
        gap: 0.85rem;
    }

        .book-row-scroll > * {
            flex-basis: 190px;
            min-width: 0;
        }

    .book-card-footer {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .book-card-actions {
        justify-content: center;
        width: 100%;
        gap: 0.6rem;
    }

        .book-card-actions .btn-primary {
            flex: 1 1 auto;
            max-width: 220px;
        }

        .book-card-actions .btn-icon {
            flex: 0 0 auto;
        }
}

@media (max-width: 420px) {
    .nav-inner {
        gap: 0.75rem;
        padding: 0.65rem 1rem;
    }

    .nav-brand span {
        display: none;
    }

    .modal-box {
        padding: 1.4rem;
    }

    .home-hero {
        padding: 2rem 1rem;
    }

    .book-grid:not(.modal-book-grid) {
        gap: 0.65rem;
    }

    .book-grid.modal-book-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 0.65rem;
    }

    .book-row-scroll {
        gap: 0.65rem;
    }

    .reader-toolbar {
        gap: 0.5rem;
        padding: 0.5rem 0.65rem;
    }
}

.keyword-picker-modal {
    max-width: 640px;
    max-height: 90vh;
    overflow-y: auto;
    text-align: center;
}

    .keyword-picker-modal .btn-block + .btn-block {
        margin-top: 0.6rem;
    }

.keyword-view {
    animation: fadeInUp var(--duration-slow) var(--ease-out) both;
}

.modal-book-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.85rem;
    margin: 1.25rem 0;
    text-align: left;
}

.keyword-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.85rem;
    margin: 1.5rem 0;
}

.keyword-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    padding: 0.65rem 0.4rem 0.75rem;
    border: 1.5px solid transparent;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: border-color var(--duration-base) var(--ease-out), background-color var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}

    .keyword-chip:hover {
        transform: translateY(-2px);
    }

.keyword-chip img {
    width: 100%;
    max-width: 92px;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    transition: transform var(--duration-base) var(--ease-out), filter var(--duration-base) var(--ease-out);
}

.keyword-chip.selected {
    border-color: var(--color-primary);
    background: var(--color-surface-alt);
}

    .keyword-chip.selected img {
        transform: scale(1.08);
        filter: drop-shadow(0 0 6px color-mix(in srgb, var(--color-primary) 55%, transparent));
    }

.home-section {
    margin: 2.5rem 0;
}

.home-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

    .home-section-header h2 {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        margin: 0;
    }

    .home-section-header .icon {
        color: var(--color-primary-strong);
    }

.btn-icon {
    min-height: 36px;
    min-width: 36px;
    padding: 0.4rem;
    gap: 0;
}

.btn-icon.is-in-cart {
    color: var(--color-primary-strong);
    border-color: var(--color-primary-strong);
}

.book-card-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.4rem;
    flex: 1 1 auto;
    min-width: 0;
    min-height: 36px;
}

    .book-card-actions .btn {
        min-height: 36px;
        padding: 0.4rem 0.9rem;
        font-size: 0.85rem;
        white-space: nowrap;
    }

    .book-card-actions .btn-primary {
        flex-shrink: 1;
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .book-card-actions .btn-icon {
        flex-shrink: 0;
    }

.nav-cart-btn {
    position: relative;
}

.cart-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    border-radius: var(--radius-pill);
    background-color: var(--color-danger);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cart-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(20, 16, 12, 0.5);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    display: flex;
    justify-content: flex-end;
    z-index: 1000;
}

.cart-drawer {
    background-color: var(--color-surface);
    width: 100%;
    max-width: 380px;
    height: 100%;
    padding: 1.5rem;
    overflow-y: auto;
    box-shadow: -8px 0 24px rgba(0, 0, 0, 0.15);
    animation: slideInRight var(--duration-base) var(--ease-out) both;
}

.cart-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }

    to {
        transform: translateX(0);
    }
}

.cart-items, .checkout-items {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.cart-item, .checkout-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.cart-item-cover, .checkout-item-cover {
    width: 44px;
    height: 58px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.cart-item-info {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
}

.cart-item-title, .checkout-item-title {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.checkout-item-title {
    flex: 1;
    min-width: 0;
}

.cart-item-price, .checkout-item-price {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.cart-total, .checkout-total {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-top: 1px solid var(--color-border);
    margin-bottom: 1rem;
    font-weight: 700;
}

/* ── Premium tier ─────────────────────────────────────────── */

.badge-premium {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: #ffffff;
    white-space: nowrap;
}

.book-card-price-premium {
    margin-left: 0.4rem;
    padding: 0.1rem 0.45rem;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: #ffffff;
    white-space: nowrap;
}

.premium-upsell-banner {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.7rem 0.9rem;
    margin-top: 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid #f59e0b;
    background-color: rgba(245, 158, 11, 0.08);
    color: #b45309;
    font-size: 0.85rem;
    text-align: left;
    cursor: pointer;
}

    .premium-upsell-banner:hover {
        background-color: rgba(245, 158, 11, 0.16);
    }

    .premium-upsell-banner .icon {
        color: #b45309;
        flex-shrink: 0;
    }

.doc-folder-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 0.9rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background-color: var(--color-surface-alt);
    color: var(--color-text);
    font-weight: 700;
    text-align: left;
    cursor: pointer;
}

    .doc-folder-header .icon {
        color: var(--color-primary-strong);
        flex-shrink: 0;
    }

    .doc-folder-header.premium {
        border-color: #f59e0b;
        background-color: rgba(245, 158, 11, 0.08);
        color: #b45309;
    }

        .doc-folder-header.premium .icon {
            color: #b45309;
        }

.doc-folder-name {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.doc-folder-count {
    padding: 0.1rem 0.5rem;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

.doc-folder-items {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-left: 1.1rem;
}

.doc-list-item .badge-premium {
    margin-left: auto;
    font-size: 0.7rem;
    padding: 0.15rem 0.5rem;
}

.doc-list-item-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.doc-list-item.premium {
    border-color: #f59e0b;
}

.doc-list-item.locked {
    background-color: rgba(245, 158, 11, 0.06);
    color: #b45309;
}

    .doc-list-item.locked .icon {
        color: #b45309;
    }

    .doc-list-item.locked:hover {
        border-color: #f59e0b;
        background-color: rgba(245, 158, 11, 0.14);
    }

.tier-options {
    display: flex;
    gap: 0.6rem;
    margin: 0.75rem 0;
}

.tier-option {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    padding: 0.7rem 0.5rem;
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-border);
    background-color: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
}

    .tier-option.selected {
        border-color: var(--color-primary-strong);
        background-color: var(--color-surface-alt);
    }

    .tier-option.tier-option-premium.selected {
        border-color: #f59e0b;
        background-color: rgba(245, 158, 11, 0.1);
    }

.tier-option-name {
    font-weight: 700;
    font-size: 0.85rem;
}

.tier-option-premium .tier-option-name {
    color: #b45309;
}

.tier-option-price {
    font-weight: 700;
    font-size: 1rem;
}

.tier-option-hint {
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

/* ── Profile setup modal ──────────────────────────────────── */

.profile-setup-modal {
    max-width: 420px;
    width: 100%;
    text-align: left;
}

    .profile-setup-modal h3 {
        text-align: center;
        margin-bottom: 0.25rem;
    }

    .profile-setup-modal > .btn-ghost {
        margin-top: 0.6rem;
    }

/* ── Sign-in modal & guest nav ────────────────────────────── */

.nav-actions-slim {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-left: auto;
}

.signin-modal {
    max-width: 400px;
}

    .signin-modal .btn-block + .btn-block {
        margin-top: 0.6rem;
    }

.signin-logo {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    margin: 0 auto 0.9rem;
    display: block;
    animation: popIn var(--duration-slow) var(--ease-spring) both;
}

.signin-providers {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin: 0.9rem 0 1.1rem;
}

    .signin-provider-chip {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        border-radius: 50%;
        border: 1px solid var(--color-border);
        background-color: var(--color-surface-alt);
        box-shadow: var(--shadow-sm);
        transition: transform var(--duration-fast) var(--ease-spring);
    }

        .signin-provider-chip:hover {
            transform: translateY(-2px) scale(1.05);
        }

.takeover-backdrop {
    background-color: color-mix(in srgb, var(--color-bg) 82%, transparent);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
}

.profile-setup-modal .icon-badge {
    margin-bottom: 0.4rem;
}

/* ── Auth transition loading ──────────────────────────────── */

.auth-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1rem;
    text-align: center;
}

.auth-callback-page {
    display: flex;
    flex: 1;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 50vh;
    max-width: 420px;
    width: 100%;
    margin: 0 auto;
    padding: 1rem;
    text-align: center;
}

    .auth-loading .spinner {
        margin: 0 0 1rem;
    }

.nav-spinner {
    width: 1.1rem;
    height: 1.1rem;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary-strong);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    display: inline-block;
}