:root {
    --bg: #f5f5f5;
    --bg-alt: #e8e8e8;
    --text: #333333;
    --text-muted: #666666;
    --accent: #4a90d9;
    --border: #ccc;
    --border-light: #ddd;
    --error: #d94a4a;
    --success: #4ad94a;
    --star: #d4a017;
}

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

body {
    font-family: 'Courier New', Courier, monospace;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

header {
    border-bottom: 1px solid var(--border);
    background: var(--bg-alt);
}

header nav {
    max-width: 900px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.2em;
    font-weight: bold;
    color: var(--text);
}
.logo:hover {
    text-decoration: none;
}

#auth-status a {
    margin-left: 12px;
    font-size: 0.85em;
}

main {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px 20px;
    width: 100%;
    flex: 1;
}

footer {
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 16px 20px;
    font-size: 0.85em;
    color: var(--text-muted);
}

.loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

/* Landing page */
.landing {
    text-align: center;
    padding: 60px 0;
}

.landing pre {
    font-size: 0.7em;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-muted);
}

.landing p {
    margin: 12px 0;
    font-size: 1.1em;
}

.landing .cta {
    margin-top: 24px;
}

/* Buttons */
.btn {
    font-family: 'Courier New', Courier, monospace;
    padding: 8px 16px;
    border: 1px solid var(--border);
    background: var(--bg-alt);
    color: var(--text);
    cursor: pointer;
    font-size: 0.9em;
}
.btn:hover {
    background: #ddd;
}
.btn.primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.btn.primary:hover {
    background: #3a7fc8;
}
.btn.danger {
    color: var(--error);
    border-color: var(--error);
}
.btn.danger:hover {
    background: var(--error);
    color: #fff;
}
.btn.small {
    padding: 4px 10px;
    font-size: 0.8em;
}

/* Profile header */
.profile-header {
    margin-bottom: 32px;
}

.profile-header h1 {
    font-size: 1.5em;
    margin-bottom: 4px;
}

.profile-header .subtitle {
    color: var(--text-muted);
    font-size: 0.85em;
}

/* Stats grid */
.stats {
    display: flex;
    gap: 2px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.stat {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    padding: 12px 16px;
    flex: 1;
    min-width: 100px;
    text-align: center;
}

.stat .value {
    font-size: 1.6em;
    font-weight: bold;
    display: block;
}

.stat .label {
    font-size: 0.75em;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* Genre tags */
.genre-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 16px 0 32px;
}

.genre-tag {
    border: 1px solid var(--border);
    padding: 2px 8px;
    font-size: 0.75em;
    color: var(--text-muted);
    background: var(--bg);
}

.genre-tag.size-2 {
    font-size: 0.85em;
    color: var(--text);
}

.genre-tag.size-3 {
    font-size: 0.95em;
    font-weight: bold;
    color: var(--text);
    border-color: var(--accent);
}

/* Section headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
    margin: 24px 0 16px;
}

.section-header h2 {
    font-size: 1.1em;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Book list */
.book-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.book-entry {
    display: flex;
    gap: 16px;
    padding: 12px;
    border: 1px solid var(--border-light);
    background: var(--bg);
}

.book-cover {
    width: 60px;
    min-width: 60px;
    height: 90px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-cover .no-cover {
    font-size: 0.6em;
    color: var(--text-muted);
    text-align: center;
    padding: 4px;
}

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

.book-info .title {
    font-weight: bold;
    font-size: 1em;
}

.book-info .author {
    color: var(--text-muted);
    font-size: 0.85em;
}

.book-info .meta {
    font-size: 0.8em;
    color: var(--text-muted);
    margin-top: 4px;
}

.book-info .review {
    margin-top: 6px;
    font-size: 0.85em;
    font-style: italic;
    color: var(--text);
}

.book-actions {
    display: flex;
    gap: 6px;
    align-items: flex-start;
}

/* Stars */
.stars {
    color: var(--star);
    letter-spacing: 1px;
}

.stars .empty {
    color: var(--border);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.modal {
    background: var(--bg);
    border: 1px solid var(--border);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
}

.modal h2 {
    margin-bottom: 16px;
    font-size: 1.1em;
}

.modal .close-btn {
    float: right;
    background: none;
    border: none;
    font-size: 1.2em;
    cursor: pointer;
    font-family: 'Courier New', Courier, monospace;
    color: var(--text-muted);
}

/* Forms */
.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 0.85em;
    margin-bottom: 4px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 8px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
}

.form-group textarea {
    height: 80px;
    resize: vertical;
}

/* Search results */
.search-results {
    border: 1px solid var(--border);
    max-height: 300px;
    overflow-y: auto;
}

.search-result {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    display: flex;
    gap: 10px;
    align-items: center;
}

.search-result:hover {
    background: var(--bg-alt);
}

.search-result .sr-cover {
    width: 32px;
    height: 48px;
    min-width: 32px;
    background: var(--bg-alt);
    overflow: hidden;
}

.search-result .sr-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.search-result .sr-info .sr-title {
    font-weight: bold;
    font-size: 0.9em;
}

.search-result .sr-info .sr-author {
    font-size: 0.8em;
    color: var(--text-muted);
}

.search-result .sr-info .sr-year {
    font-size: 0.75em;
    color: var(--text-muted);
}

/* Star picker */
.star-picker {
    display: flex;
    gap: 4px;
    font-size: 1.3em;
}

.star-picker span {
    cursor: pointer;
    color: var(--border);
    user-select: none;
}

.star-picker span.active {
    color: var(--star);
}

/* Selected book display */
.selected-book {
    display: flex;
    gap: 12px;
    padding: 12px;
    border: 1px solid var(--accent);
    margin-bottom: 16px;
    background: var(--bg-alt);
}

.selected-book .sb-cover {
    width: 50px;
    height: 75px;
    min-width: 50px;
    background: var(--bg);
    overflow: hidden;
}

.selected-book .sb-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.selected-book .sb-info .sb-title {
    font-weight: bold;
}

.selected-book .sb-info .sb-author {
    color: var(--text-muted);
    font-size: 0.85em;
}

/* Edit inline form */
.edit-form {
    padding: 12px;
    border: 1px solid var(--accent);
    background: var(--bg-alt);
    margin-top: 8px;
}

.edit-form .form-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.edit-form .form-row .form-group {
    flex: 1;
    min-width: 120px;
}

.form-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    border: 1px solid var(--border);
    background: var(--bg);
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85em;
    z-index: 200;
}

.toast.error {
    border-color: var(--error);
    color: var(--error);
}

.toast.success {
    border-color: var(--success);
}

/* Status toggle buttons */
.status-toggle {
    display: flex;
    gap: 0;
}

.toggle-btn {
    font-family: 'Courier New', Courier, monospace;
    padding: 8px 16px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9em;
    flex: 1;
    text-align: center;
}

.toggle-btn + .toggle-btn {
    border-left: none;
}

.toggle-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.toggle-btn:hover:not(.active) {
    background: var(--bg-alt);
}

.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 600px) {
    .stats {
        gap: 2px;
    }
    .stat {
        min-width: 80px;
        padding: 8px 10px;
    }
    .stat .value {
        font-size: 1.3em;
    }
    .book-entry {
        padding: 10px;
        gap: 10px;
    }
    .modal {
        width: 95%;
        padding: 16px;
    }
}