/* ============================================
   LITERATUS — Sketchpad + Literary Aesthetic
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Caveat:wght@400;700&family=JetBrains+Mono:wght@400&family=EB+Garamond:ital,wght@0,400;0,600;0,700;1,400;1,700&family=Playfair+Display:ital,wght@0,400;0,700;1,400&display=swap');

@font-face {
    font-family: 'YasiHand';
    src: url('/static/fonts/YasiHand-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

:root {
    --ink: #1a1a1a;
    --ink2: rgba(26, 26, 26, 0.72);
    --ink3: rgba(26, 26, 26, 0.48);
    --ink4: rgba(26, 26, 26, 0.24);
    --brown: #8b4513;
    --brown-hover: #6b2f0a;
    --cream: rgba(255, 248, 220, 0.92);
    --paper: #f5f0e8;
    --paper-light: #faf7f2;
    --maroon: #5A1A27;
    --red-margin: #c44;
    --green-soft: #4a7c59;
    --yellow-soft: #b8860b;
    --red-soft: #a0522d;

    --font-body: 'EB Garamond', 'Georgia', serif;
    --font-heading: 'Playfair Display', serif;
    --font-hand: 'YasiHand', 'Caveat', cursive;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

/* ---- Reset & Base ---- */

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

body {
    background-color: var(--paper);
    font-family: var(--font-body);
    color: var(--ink);
    line-height: 1.75;
    font-size: 1.05rem;
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(139, 69, 19, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(90, 26, 39, 0.02) 0%, transparent 50%);
}

a {
    color: var(--brown);
    text-decoration: none;
    text-underline-offset: 3px;
    transition: color 0.15s ease;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--maroon);
    line-height: 1.3;
}

/* ---- Header ---- */

.site-header {
    background: var(--paper-light);
    padding: 1rem 2rem;
    border-bottom: 1.5px solid var(--ink4);
    position: relative;
}

.site-header::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 5%;
    right: 5%;
    height: 1px;
    background: repeating-linear-gradient(
        90deg,
        var(--ink4) 0px,
        var(--ink4) 4px,
        transparent 4px,
        transparent 8px
    );
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-area img {
    height: 48px;
    width: 48px;
    filter: saturate(0.8) contrast(1.1);
    mix-blend-mode: multiply;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--maroon);
    text-decoration: none;
    letter-spacing: 0.5px;
    display: inline-block;
}

.logo-text:hover {
    color: var(--brown);
    text-decoration: none;
}

.site-nav {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.site-nav a {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--ink2);
    text-transform: lowercase;
    letter-spacing: 0.5px;
    padding: 0.3rem 0;
    border-bottom: 1px solid transparent;
    transition: all 0.15s ease;
}

.site-nav a:hover {
    color: var(--brown);
    border-bottom-color: var(--brown);
    text-decoration: none;
}

/* ---- Main Content ---- */

.main-content {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem;
}

/* ---- Flash Messages ---- */

.flash-message {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--ink2);
    background: transparent;
    border: 1px dashed var(--ink4);
    border-radius: 4px;
    padding: 0.6rem 1rem;
    margin: 0 auto 1.5rem;
    max-width: 420px;
    text-align: center;
}

/* ---- Footer ---- */

.site-footer {
    margin-top: auto;
    padding: 1.5rem 2rem;
    text-align: center;
    border-top: 1px dashed var(--ink4);
}

.site-footer p {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--ink3);
    letter-spacing: 0.5px;
}

.credit-link {
    color: var(--ink3);
    text-decoration: none;
}

.credit-link:hover {
    color: var(--maroon);
}

/* ---- Annotation Labels ---- */

.annotation-label {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--maroon);
    display: inline-block;
    margin-bottom: 1rem;
    position: relative;
}

.annotation-label::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: -5px;
    height: 1.5px;
    background: var(--ink4);
    border-radius: 2px;
}

/* ---- Homepage Grid ---- */

.homepage-grid {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 2.5rem;
    align-items: start;
    grid-template-rows: auto;
}

/* ---- Notebook Folder (Community Favorites) ---- */

.favorites-folder {
    position: relative;
}

.folder-tab {
    display: inline-block;
    background: #e8dfd2;
    padding: 0.4rem 1.2rem 0.3rem;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    color: var(--maroon);
    border: 1px solid var(--ink4);
    border-bottom: none;
    border-radius: 6px 6px 0 0;
    position: relative;
    top: 1px;
    z-index: 1;
    cursor: pointer;
    transition: background 0.15s ease;
    user-select: none;
}

.folder-tab:hover {
    background: #efe7db;
}

.folder-tab .tab-arrow {
    display: inline-block;
    transition: transform 0.25s ease;
    margin-left: 0.3rem;
    font-size: 0.7rem;
}

.folder-tab.open .tab-arrow {
    transform: rotate(90deg);
}

.folder-body {
    background: white;
    border: 1px solid var(--ink4);
    padding: 0;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.4s ease, padding 0.3s ease;
    background-image:
        linear-gradient(rgba(196, 68, 68, 0.25) 0px, rgba(196, 68, 68, 0.25) 1px, transparent 1px),
        repeating-linear-gradient(
            transparent 0px,
            transparent 27px,
            rgba(100, 149, 237, 0.12) 27px,
            rgba(100, 149, 237, 0.12) 28px
        );
    background-size: 1px 100%, 100% 28px;
    background-position: 1.5rem 0, 0 0.75rem;
    background-repeat: no-repeat, repeat;
}

.folder-body.open {
    max-height: 800px;
    padding: 1rem 1rem 1rem 2rem;
}

.folder-papers {
    list-style: none;
    padding: 0;
    margin: 0;
}

.folder-paper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 0.5rem;
    border-bottom: 1px dashed var(--ink4);
    position: relative;
    transition: background 0.15s ease, transform 0.15s ease;
}

.folder-paper:last-child {
    border-bottom: none;
}

.folder-paper:hover {
    background: rgba(255, 248, 220, 0.35);
    transform: translateX(3px);
}

.folder-paper::before {
    content: none;
}

.folder-paper-content {
    flex: 1;
    min-width: 0;
}

.folder-paper-title {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    color: var(--ink);
    line-height: 1.3;
}

.folder-paper-author {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--ink3);
    margin-top: 0.1rem;
}

.folder-paper-count {
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: var(--ink3);
    white-space: nowrap;
    flex-shrink: 0;
    min-width: 2.5rem;
    text-align: center;
}

.folder-empty {
    font-family: var(--font-body);
    color: var(--ink3);
    font-size: 0.95rem;
    font-style: italic;
    padding: 0.5rem 0;
}

/* Paper edge effect on folder */
.folder-body::after {
    content: '';
    display: block;
    height: 4px;
    background: repeating-linear-gradient(
        90deg,
        transparent 0px,
        transparent 2px,
        var(--ink4) 2px,
        var(--ink4) 4px
    );
    opacity: 0.3;
    margin-top: 0.5rem;
}

/* ---- Notebook Page (Center) ---- */

.notebook-page {
    background: white;
    border: 1px solid var(--ink4);
    border-radius: 2px;
    padding: 2rem 2rem 2rem 3rem;
    position: relative;
    box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.02);
    background-image:
        linear-gradient(var(--red-margin) 0px, var(--red-margin) 1px, transparent 1px),
        repeating-linear-gradient(
            transparent 0px,
            transparent 31px,
            rgba(0, 0, 0, 0.04) 31px,
            rgba(0, 0, 0, 0.04) 32px
        );
    background-size: 1px 100%, 100% 32px;
    background-position: 2rem 0, 0 1rem;
    background-repeat: no-repeat, repeat;
}

/* ---- Search Container ---- */

.search-container {
    margin-bottom: 2rem;
}

.search-input {
    width: 100%;
    font-family: var(--font-body);
    font-size: 1.1rem;
    padding: 0.5rem 0;
    border: none;
    border-bottom: 1.5px solid var(--ink3);
    background: transparent;
    color: var(--ink);
    outline: none;
    transition: border-color 0.2s ease;
}

.search-input::placeholder {
    font-family: var(--font-body);
    font-style: italic;
    color: var(--ink3);
    font-size: 1.05rem;
}

.search-input:focus {
    border-bottom-color: var(--brown);
}

.search-results {
    list-style: none;
    padding: 0;
    margin: 0.75rem 0 0;
    max-height: 280px;
    overflow-y: auto;
}

.search-results::-webkit-scrollbar {
    width: 4px;
}

.search-results::-webkit-scrollbar-thumb {
    background: var(--ink4);
    border-radius: 2px;
}

.search-result-item {
    padding: 0.7rem 0;
    border-bottom: 1px dashed var(--ink4);
    transition: background 0.15s ease;
}

.search-result-item:hover {
    background: rgba(255, 248, 220, 0.25);
}

.search-result-top {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.search-result-cover {
    width: 36px;
    height: 52px;
    object-fit: cover;
    flex-shrink: 0;
    border: 0.5px solid var(--ink4);
}

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

.search-result-title {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    color: var(--ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-result-author {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--ink3);
}

.search-result-actions {
    display: flex;
    gap: 0.35rem;
    margin-top: 0.4rem;
    padding-left: 0;
    align-items: center;
    justify-content: flex-end;
}

.search-action-form {
    flex: 0 1 auto;
    display: flex;
    margin: 0;
}

.btn-want-to-read {
    flex: 0 0 auto;
    margin-right: auto;
    padding: 0.3rem 0.7rem;
    background: rgba(0, 0, 0, 0.03);
    border-color: var(--ink4);
    color: var(--ink3);
}

.btn-want-to-read,
.btn-sentiment {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    padding: 0.25rem 0.4rem;
    border: 1px solid var(--ink4);
    background: transparent;
    color: var(--ink2);
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
    text-align: center;
}

.btn-sentiment {
    font-size: 0.55rem;
    padding: 0.2rem 0.35rem;
}

.btn-want-to-read:hover {
    background: var(--cream);
    border-color: var(--brown);
    color: var(--brown);
}

.btn-sentiment--beloved:hover {
    background: var(--green-soft);
    border-color: var(--green-soft);
    color: white;
}

.btn-sentiment--tolerated:hover {
    background: var(--yellow-soft);
    border-color: var(--yellow-soft);
    color: white;
}

.btn-sentiment--disliked:hover {
    background: var(--red-soft);
    border-color: var(--red-soft);
    color: white;
}

/* ---- Want to Read List ---- */

.want-to-read-section {
    margin-top: 2rem;
}

.want-to-read-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.want-to-read-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px dashed var(--ink4);
    font-size: 0.95rem;
}

.want-to-read-info {
    flex: 1;
    min-width: 0;
}

.want-to-read-item .book-title {
    font-family: var(--font-body);
    font-style: italic;
    line-height: 1.3;
}

.want-to-read-item .book-author {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--ink3);
    line-height: 1.3;
}

.item-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-shrink: 0;
}

.mark-read-btn {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--green-soft);
    background: transparent;
    border: 1px solid var(--green-soft);
    cursor: pointer;
    padding: 0.2rem 0.5rem;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.mark-read-btn:hover {
    background: var(--green-soft);
    color: white;
}

.remove-btn {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--ink3);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.1rem 0.3rem;
    transition: color 0.15s ease;
}

.remove-btn:hover {
    color: var(--red-soft);
}

.empty-shelf {
    font-family: var(--font-body);
    color: var(--ink3);
    font-size: 0.95rem;
    font-style: italic;
    padding: 1rem 0;
}

/* ---- Progress Card ---- */

.progress-card {
    background: white;
    border: 1px solid var(--ink4);
    padding: 1.5rem;
    position: relative;
    box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.02);
}

.progress-card::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
    background: var(--maroon);
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2), inset 0 -1px 1px rgba(0, 0, 0, 0.15);
    z-index: 1;
}

.progress-card::after {
    content: '';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 7px;
    background: var(--ink3);
}

.progress-ring-container {
    position: relative;
    width: 140px;
    height: 140px;
    margin: 1rem auto;
}

.progress-ring {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.progress-ring-bg {
    fill: none;
    stroke: var(--ink4);
    stroke-width: 6;
}

.progress-ring-fill {
    fill: none;
    stroke: var(--brown);
    stroke-width: 6;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s ease-in-out;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.progress-count {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    color: var(--ink);
    display: block;
    line-height: 1;
}

.progress-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--ink3);
    display: block;
    margin-top: 0.2rem;
}

.goal-form {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    align-items: center;
    justify-content: center;
}

.goal-form input[type="number"] {
    width: 70px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.3rem 0.4rem;
    border: none;
    border-bottom: 1.5px solid var(--ink3);
    background: transparent;
    color: var(--ink);
    text-align: center;
    outline: none;
}

.goal-form input[type="number"]:focus {
    border-bottom-color: var(--brown);
}

.goal-form button {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--brown);
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.15s ease;
}

.goal-form button:hover {
    color: var(--brown-hover);
    text-decoration: underline;
}

.edit-goal-btn {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--ink3);
    background: none;
    border: none;
    cursor: pointer;
    display: block;
    margin: 0.75rem auto 0;
    transition: color 0.15s ease;
}

.edit-goal-btn:hover {
    color: var(--brown);
}

.edit-goal-form {
    display: none;
}

.edit-goal-form.visible {
    display: flex;
}

/* ---- Landing Page (Unauthenticated) ---- */

.landing-page {
    max-width: 600px;
    margin: 6rem auto;
    text-align: center;
}

.landing-title {
    font-family: var(--font-hand);
    font-size: clamp(2.5rem, 5vw, 4rem);
    color: var(--ink);
    transform: rotate(-2deg);
    margin-bottom: 0.5rem;
    line-height: 1.1;
}

.landing-tagline {
    font-family: var(--font-body);
    font-size: 1.15rem;
    color: var(--ink2);
    font-style: italic;
    margin-bottom: 3rem;
    letter-spacing: 0.01em;
}

.landing-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.tape-btn {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    padding: 0.6rem 1.5rem;
    background: var(--cream);
    color: var(--ink);
    border: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    display: inline-block;
    transform: rotate(-1deg);
}

.tape-btn:hover {
    background: white;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
    transform: rotate(0deg);
    color: var(--brown);
    text-decoration: none;
}

.tape-btn--dark {
    background: var(--ink);
    color: var(--paper);
    transform: rotate(1deg);
}

.tape-btn--dark:hover {
    background: var(--brown);
    color: white;
}

/* ---- Notebook Container (Forms) ---- */

.notebook-container {
    max-width: 440px;
    margin: 3rem auto;
    background: white;
    border: 1px solid var(--ink4);
    padding: 2.5rem 2.5rem 2.5rem 3.5rem;
    position: relative;
    background-image:
        linear-gradient(var(--red-margin) 0px, var(--red-margin) 1px, transparent 1px),
        repeating-linear-gradient(
            transparent 0px,
            transparent 31px,
            rgba(0, 0, 0, 0.04) 31px,
            rgba(0, 0, 0, 0.04) 32px
        );
    background-size: 1px 100%, 100% 32px;
    background-position: 2.5rem 0, 0 1.5rem;
    background-repeat: no-repeat, repeat;
}

.notebook-container h1 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--ink);
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--ink3);
    text-transform: lowercase;
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 0.3rem;
}

.form-input {
    width: 100%;
    font-family: var(--font-body);
    font-size: 1rem;
    padding: 0.4rem 0;
    border: none;
    border-bottom: 1.5px solid var(--ink4);
    background: transparent;
    color: var(--ink);
    outline: none;
    transition: border-color 0.2s ease;
}

.form-input:focus {
    border-bottom-color: var(--brown);
}

.form-submit {
    width: 100%;
    font-family: var(--font-body);
    font-size: 1.05rem;
    padding: 0.6rem 1.5rem;
    margin-top: 1rem;
    background: var(--ink);
    color: var(--paper);
    border: none;
    cursor: pointer;
    border-radius: 255px 15px 225px 15px / 15px 225px 15px 255px;
    transition: all 0.2s ease;
}

.form-submit:hover {
    background: var(--brown);
}

.form-link {
    display: block;
    text-align: center;
    margin-top: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--ink3);
}

.form-link a {
    color: var(--brown);
}

/* ---- Profile Page ---- */

.profile-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px dashed var(--ink4);
}

.profile-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--paper);
    border: 1.5px solid var(--ink4);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.profile-avatar svg {
    width: 36px;
    height: 36px;
    opacity: 0.35;
}

.profile-name {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--maroon);
}

.profile-username {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--ink3);
    margin-top: 0.1rem;
}

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

.avatar-upload {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.form-hint {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--ink3);
    margin-top: 0.3rem;
}

.profile-favorite {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--ink3);
    margin-top: 0.2rem;
}

.profile-actions {
    margin-left: auto;
}

.add-book-link {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.4rem 0.8rem;
    background: var(--ink);
    color: var(--paper);
    text-decoration: none;
    transition: background 0.15s ease;
}

.add-book-link:hover {
    background: var(--brown);
    color: white;
    text-decoration: none;
}

/* ---- Category Tabs ---- */

.category-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.category-tab,
.wtr-tab {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 0.3rem 0.8rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 3px;
    background: transparent;
    cursor: pointer;
    color: var(--ink3);
    transition: all 0.15s ease;
    text-transform: lowercase;
}

.category-tab:hover,
.wtr-tab:hover {
    border-color: rgba(0, 0, 0, 0.25);
    color: var(--ink);
}

.category-tab.active,
.wtr-tab.active {
    background: var(--paper-light);
    border-color: var(--brown);
    color: var(--brown);
}

.category-panel {
    display: none;
}

.category-panel.active {
    display: block;
}

/* ---- Category Select (search results) ---- */

.category-select {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 0.2rem 0.4rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 3px;
    background: transparent;
    color: var(--ink3);
    cursor: pointer;
}

/* ---- Book Categories ---- */

.category-section {
    margin-bottom: 2.5rem;
}

.category-header {
    font-family: var(--font-hand);
    font-size: 1.4rem;
    color: var(--brown);
    text-transform: lowercase;
    display: inline-block;
    padding-bottom: 0.3rem;
    border-bottom: 2px solid var(--brown);
    opacity: 0.85;
    margin-bottom: 1rem;
}

.book-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.book-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0.5rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    transition: background 0.15s ease;
    background-image: repeating-linear-gradient(
        transparent 0px,
        transparent 31px,
        rgba(0, 0, 0, 0.02) 31px,
        rgba(0, 0, 0, 0.02) 32px
    );
    min-height: 56px;
}

.book-item:hover {
    background-color: rgba(255, 248, 220, 0.3);
}

.rating-circle {
    width: 38px;
    height: 38px;
    border-radius: 55% 45% 50% 48%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.rating-beloved { background-color: var(--green-soft); }
.rating-tolerated { background-color: var(--yellow-soft); }
.rating-disliked { background-color: var(--red-soft); }

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

.book-info-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--ink);
}

.book-info-title a {
    color: var(--ink);
}

.book-info-title a:hover {
    color: var(--brown);
}

.book-info-author {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--ink3);
}

.book-position {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--ink3);
    font-style: italic;
    flex-shrink: 0;
}

.book-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-shrink: 0;
    margin-left: auto;
}

.btn-delete {
    color: var(--ink3);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.2rem;
    transition: color 0.15s ease;
}

.btn-delete:hover {
    color: var(--red-soft);
}

.btn-delete svg {
    width: 16px;
    height: 16px;
}

.btn-rerank {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--ink3);
    background: none;
    border: 1px solid var(--ink4);
    padding: 0.2rem 0.5rem;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
}

.btn-rerank:hover {
    color: var(--brown);
    border-color: var(--brown);
    text-decoration: none;
}

.empty-category {
    font-family: var(--font-body);
    color: var(--ink3);
    font-size: 0.95rem;
    font-style: italic;
    padding: 0.5rem 0;
}

/* ---- Comparison Page ---- */

.comparison-page {
    max-width: 700px;
    margin: 2rem auto;
    text-align: center;
}

.comparison-prompt {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--ink);
    display: inline-block;
    margin-bottom: 2rem;
}

.comparison-cards {
    display: flex;
    justify-content: center;
    gap: 2rem;
    align-items: stretch;
    position: relative;
}

.comparison-vs {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-body);
    font-size: 1.1rem;
    font-style: italic;
    color: var(--ink3);
    z-index: 1;
    background: var(--paper);
    padding: 0.2rem 0.5rem;
}

.comparison-card {
    flex: 1;
    max-width: 280px;
}

.comparison-card button {
    width: 100%;
    background: white;
    border: 1.5px solid var(--ink4);
    padding: 2rem 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.comparison-card button:hover {
    transform: rotate(-1deg) translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    border-color: var(--brown);
}

.comparison-card .book-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--ink);
    margin-bottom: 0.5rem;
}

.comparison-card .book-author {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--ink3);
}

.comparison-hint {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--ink3);
    margin-top: 2rem;
}

.comparison-cancel {
    display: inline-block;
    margin-top: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--ink3);
}

/* ---- Sentiment Chooser ---- */

.sentiment-page {
    max-width: 600px;
    margin: 2rem auto;
    text-align: center;
}

.sentiment-book-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--ink);
    margin-bottom: 0.3rem;
}

.sentiment-book-author {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--ink3);
    margin-bottom: 2rem;
}

.sentiment-cards {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.sentiment-card {
    flex: 1;
    max-width: 160px;
}

.sentiment-card button {
    width: 100%;
    background: white;
    border: 1.5px solid var(--ink4);
    padding: 1.5rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.sentiment-card button:hover {
    transform: rotate(-2deg) translateY(-3px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.sentiment-card .sentiment-name {
    font-family: var(--font-hand);
    font-size: 1.1rem;
    color: var(--ink);
}

.sentiment-beloved button:hover { border-color: var(--green-soft); }
.sentiment-tolerated button:hover { border-color: var(--yellow-soft); }
.sentiment-disliked button:hover { border-color: var(--red-soft); }

/* ---- Search Users ---- */

.search-users-page {
    max-width: 440px;
    margin: 2rem auto;
}

.search-form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.search-form input {
    flex: 1;
    font-family: var(--font-body);
    font-size: 1rem;
    padding: 0.4rem 0;
    border: none;
    border-bottom: 1.5px solid var(--ink3);
    background: transparent;
    color: var(--ink);
    outline: none;
}

.search-form input:focus {
    border-bottom-color: var(--brown);
}

.search-form button {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.4rem 0.8rem;
    background: var(--ink);
    color: var(--paper);
    border: none;
    cursor: pointer;
    transition: background 0.15s ease;
}

.search-form button:hover {
    background: var(--brown);
}

.user-results {
    list-style: none;
    padding: 0;
}

.user-results li {
    padding: 0.5rem 0;
    border-bottom: 1px dashed var(--ink4);
}

.user-results li a {
    font-family: var(--font-hand);
    font-size: 1.2rem;
    color: var(--brown);
}

/* ---- Animations ---- */

.fade-in {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered delays for list items */
.fade-in:nth-child(1) { transition-delay: 0s; }
.fade-in:nth-child(2) { transition-delay: 0.08s; }
.fade-in:nth-child(3) { transition-delay: 0.16s; }
.fade-in:nth-child(4) { transition-delay: 0.24s; }
.fade-in:nth-child(5) { transition-delay: 0.32s; }
.fade-in:nth-child(6) { transition-delay: 0.4s; }
.fade-in:nth-child(7) { transition-delay: 0.48s; }
.fade-in:nth-child(8) { transition-delay: 0.56s; }

/* ---- Responsive ---- */

@media (max-width: 768px) {
    .homepage-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .folder-body.open {
        max-height: 600px;
    }

    .comparison-cards {
        flex-direction: column;
        align-items: center;
    }

    .comparison-card {
        max-width: 100%;
    }

    .comparison-vs {
        position: static;
        transform: rotate(-5deg);
    }

    .sentiment-cards {
        flex-direction: column;
        align-items: center;
    }

    .sentiment-card {
        max-width: 100%;
    }

    .homepage-grid .notebook-page {
        order: 1;
    }

    .homepage-grid .progress-card {
        order: 2;
    }

    .homepage-grid .favorites-folder {
        order: 3;
    }

    .site-header {
        padding: 0.75rem 1rem;
    }

    .header-inner {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }

    .logo-text {
        font-size: 1.6rem;
    }

    .site-nav {
        gap: 1rem;
        justify-content: center;
    }

    .main-content {
        padding: 1rem;
    }

    .notebook-container {
        margin: 2rem 1rem;
        padding: 1.5rem 1.5rem 1.5rem 2.5rem;
        background-position: 1.5rem 0, 0 1.5rem;
    }

    .profile-header {
        flex-wrap: wrap;
    }

    .profile-actions {
        margin-left: 0;
        width: 100%;
        margin-top: 0.5rem;
    }
}

@media (max-width: 480px) {
    .site-nav a {
        font-size: 0.62rem;
    }

    .folder-paper {
        padding: 0.5rem 0.3rem;
    }

    .landing-actions {
        flex-direction: column;
        align-items: center;
    }
}