@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&display=swap');

/* colors and layout variables */
:root {
  --forest:    #1e3312;
  --forest-mid:#2f451f;
  --sage-dark: #4a6635;
  --sage:      #7a9c60;
  --sage-bg:   #dce8c8;
  --sage-soft: #eaf2db;

  --cream:     #fbf7ef;
  --cream-card:#fffdf8;
  --cream-soft:#f3ead8;

  --gold:      #c89f5d;
  --gold-soft: #f1dfbd;
  --gold-dark: #9b6f32;

  --text:      #1e2c16;
  --text-mid:  #3a4f2c;
  --text-muted:#6b7c52;
  --border:    #cddcb0;
  --border-soft:#e0ead0;

  --bg-main:        var(--cream);
  --bg-card:        var(--cream-card);
  --bg-soft:        var(--cream-soft);
  --primary:        var(--sage-dark);
  --primary-dark:   var(--forest-mid);
  --primary-light:  var(--sage-bg);
  --accent:         var(--gold);
  --accent-soft:    var(--gold-soft);
  --text-main:      var(--text);
  --shadow-soft:    0 14px 35px rgba(30,51,18,.13);
  --shadow-card:    0 8px 22px rgba(30,51,18,.1);
  --radius-lg:      22px;
  --radius-md:      14px;
  --radius-sm:      8px;
  --max-width:      1180px;
}

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

body {
  min-height: 100vh;
  font-family: 'Nunito', system-ui, sans-serif;
  color: var(--text);

  /* Gradient: dark-sage top (under navbar) → pale sage → cream */
  background:
    linear-gradient(
      180deg,
      #b8cfA0 0%,
      #ccddb2 4%,
      #dce8c8 10%,
      #e8f0d8 18%,
      #f0f5e8 30%,
      var(--cream) 55%
    );
  background-attachment: fixed;
}

a { color: inherit; text-decoration: none; }

main {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 42px auto;
}

img { max-width: 100%; display: block; }

input, select, textarea, button { font: inherit; }

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}

/* buttons */
.btn, button {
  border: none;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.btn:hover, button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

button[type="submit"], .btn-primary {
  background: linear-gradient(135deg, var(--sage-dark), var(--forest-mid));
  color: #fff;
  box-shadow: 0 8px 18px rgba(47,70,30,.28);
}

/* navbar */
.navbar {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 20px auto 0;
  padding: 13px 22px;

  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;

  position: sticky;
  top: 14px;
  z-index: 100;

  background: var(--forest);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-lg);
  box-shadow:
    0 8px 32px rgba(10,20,6,.36),
    0 2px 8px rgba(0,0,0,.22),
    inset 0 1px 0 rgba(255,255,255,.05);
}

/* logo */
.logo {
  display: flex; align-items: center; gap: 9px;
  white-space: nowrap; cursor: pointer;
  text-decoration: none; flex-shrink: 0;
}
.logo-mark {
  width: 30px; height: 30px; flex-shrink: 0;
  filter: brightness(1.1) drop-shadow(0 2px 6px rgba(0,0,0,.3));
  transition: transform .25s ease;
}
.logo:hover .logo-mark { transform: translateY(-2px) rotate(-6deg); }

.logo-text {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1.18rem; font-weight: 700;
  letter-spacing: -.5px; line-height: 1;
}
.logo-story { color: rgba(255,253,248,.92); }
.logo-ducks { color: var(--gold); }

/* nav buttons */
.auth-buttons { display: flex; align-items: center; gap: 10px; }

.auth-buttons .btn:first-child {
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.16);
  color: rgba(255,253,248,.82);
}
.auth-buttons .btn:first-child:hover {
  background: rgba(255,255,255,.17);
  color: #fff;
}
.auth-buttons .btn:last-child {
  background: var(--gold);
  color: var(--forest);
  font-weight: 800;
  box-shadow: 0 6px 16px rgba(200,159,93,.32);
}
.auth-buttons .btn:last-child:hover {
  background: #d4ad6b;
}

/* logged in state */
.welcome-area {
  flex: 1;
  display: flex; justify-content: center; align-items: center; gap: 14px;
  color: rgba(255,253,248,.48);
  font-size: .95rem;
}
#welcomeText {
  max-width: 440px; white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.profile-link {
  display: none;
  padding: 9px 18px; border-radius: 999px;
  background: rgba(255,255,255,.11);
  border: 1px solid rgba(255,255,255,.14);
  color: rgba(255,253,248,.88); font-weight: 700;
  transition: transform .2s, background .2s;
}
.profile-link:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,.2);
}
.logout-btn {
  display: none;
  background: transparent;
  color: rgba(255,253,248,.55);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: none;
}
.logout-btn:hover {
  background: rgba(255,70,70,.18);
  color: #ffaeae;
  border-color: rgba(255,70,70,.28);
}

/* search */
.search-section {
  margin-bottom: 32px;
  display: flex; justify-content: center;
}
#searchInput {
  width: min(560px, 100%);
  padding: 15px 22px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: rgba(255,253,248,.96);
  box-shadow: var(--shadow-card);
  font-size: 1rem; outline: none;
  transition: border-color .2s, box-shadow .2s;
}
#searchInput:focus {
  border-color: var(--sage-dark);
  box-shadow: 0 0 0 4px rgba(74,102,53,.15), var(--shadow-card);
}

/* books grid */
.books-section {
  padding: 32px;
  background: rgba(255,253,248,.78);
  border: 1.5px solid var(--border-soft);
  border-top: 3px solid var(--sage-dark);
  border-radius: 28px;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(8px);
}

.books-section h1 {
  margin-bottom: 26px;
  color: var(--forest-mid);
  font-family: 'Nunito', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: -1.5px;
}

.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 28px;
  align-items: start;
}

/* book card */
.book-card {
  width: 100%; max-width: 240px;
  margin: 0 auto; padding: 18px;
  display: flex; flex-direction: column;
  background: var(--cream-card);
  border: 1.5px solid var(--border-soft);
  border-top: 3px solid var(--sage-bg);
  border-radius: 22px;
  box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease, border-top-color .25s ease;
}
.book-card:hover {
  transform: translateY(-8px) rotate(-.4deg);
  box-shadow: 0 22px 44px rgba(30,51,18,.16);
  border-top-color: var(--sage-dark);
}

.book-card h2,
.book-card h3 {
  margin-bottom: 8px;
  color: var(--forest-mid);
  font-family: 'Nunito', sans-serif;
  font-size: 1rem; line-height: 1.35;
}
.book-card p { color: var(--text-muted); font-size: .88rem; line-height: 1.6; }
.book-card p strong { color: var(--text); }

.book-cover, .book-placeholder {
  width: 100%; aspect-ratio: 2/3;
  object-fit: cover; margin-bottom: 16px;
  border-radius: 14px; border: 1px solid var(--border);
  background: var(--cream-soft);
}
.book-placeholder {
  background:
    linear-gradient(135deg, transparent 49%, rgba(0,0,0,.07) 50%, transparent 51%),
    linear-gradient(45deg, transparent 49%, rgba(0,0,0,.07) 50%, transparent 51%),
    linear-gradient(135deg, var(--sage-soft), var(--cream-soft));
}

/* login / register */
.auth-section {
  min-height: 100vh;
  display: flex; justify-content: center; align-items: center;
  padding: 40px;
}
.auth-form {
  width: 100%; max-width: 420px; padding: 36px;
  background: rgba(255,253,248,.95);
  border: 1.5px solid var(--border-soft);
  border-top: 3px solid var(--sage-dark);
  border-radius: 28px;
  box-shadow: var(--shadow-soft);
}
.auth-form h1 {
  margin-bottom: 24px;
  color: var(--forest-mid);
  font-family: 'Nunito', sans-serif;
  font-size: 2rem; letter-spacing: -1px; text-align: center;
}
.auth-form label {
  display: block; margin-top: 16px; margin-bottom: 8px;
  color: var(--text); font-weight: 700;
}
.auth-form input {
  width: 100%; padding: 13px 16px;
  border-radius: 12px; border: 1.5px solid var(--border);
  background: #fff; outline: none; font-size: 1rem;
  transition: border .2s ease, box-shadow .2s ease;
}
.auth-form input:focus {
  border-color: var(--sage-dark);
  box-shadow: 0 0 0 4px rgba(74,102,53,.12);
}
.auth-form button { width: 100%; margin-top: 26px; }
.auth-links { margin-top: 20px; color: var(--text-muted); text-align: center; font-size: .95rem; }
.auth-links a { color: var(--forest-mid); font-weight: 700; }

/* book details */
.details-section { padding: 18px 0 48px; }

.back-link {
  display: inline-flex; align-items: center;
  margin-bottom: 16px;
  color: var(--forest-mid); font-weight: 700; font-size: .9rem;
  transition: transform .2s;
}
.back-link:hover { transform: translateX(-4px); }

.book-details-card {
  position: relative; overflow: hidden;
  display: grid;
  grid-template-columns: 260px minmax(0,1fr) 250px;
  gap: 34px; align-items: start;
  padding: 34px;
  background: rgba(255,253,248,.88);
  border: 1.5px solid var(--border-soft);
  border-top: 3px solid var(--sage-dark);
  border-radius: 28px;
  box-shadow: 0 24px 56px rgba(20,40,10,.14);
  backdrop-filter: blur(12px);
}

.details-cover-wrap {
  position: relative; z-index: 1; padding: 14px;
  background: rgba(255,253,248,.75);
  border: 1px solid var(--border-soft);
  border-radius: 22px;
  box-shadow: 0 16px 32px rgba(30,51,18,.12);
}
.details-cover {
  width: 100%; height: 360px; object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 14px 28px rgba(20,40,10,.18);
  transition: transform .25s ease;
}
.details-cover-wrap:hover .details-cover { transform: scale(1.015); }

.details-info { position: relative; z-index: 1; padding-top: 8px; }
.details-info h1 {
  max-width: 520px; margin-bottom: 14px;
  color: var(--forest-mid);
  font-family: 'Nunito', sans-serif;
  font-size: clamp(2rem, 3vw, 3.2rem);
  line-height: 1.05; letter-spacing: -2px;
  overflow-wrap: break-word; hyphens: auto;
}

.details-author { margin-bottom: 22px; color: var(--text-muted); font-size: 1rem; }
.details-author strong { color: var(--text); }

.details-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }

.meta-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 14px;
  background: var(--sage-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text); font-size: .9rem; font-weight: 700;
  box-shadow: 0 4px 12px rgba(30,51,18,.07);
}

.details-description {
  max-width: 560px; padding-left: 16px;
  border-left: 3px solid var(--sage-bg);
  color: var(--text-muted); font-size: .95rem; line-height: 1.75;
}

.rating-preview { margin-top: 24px; }
.rating-label { margin-bottom: 8px; color: var(--forest-mid); font-weight: 700; }
.rating-score { display: flex; align-items: baseline; gap: 8px; }
.rating-star  { color: #c8911a; font-size: 1.55rem; }
.rating-number { color: var(--forest-mid); font-size: 1.7rem; font-weight: 900; }
.rating-small  { color: var(--text-muted); font-weight: 700; }

.details-actions {
  position: relative; z-index: 1;
  width: 100%; max-width: 250px;
  display: flex; flex-direction: column; gap: 18px;
  align-self: center; justify-self: end;
}

.action-panel {
  width: 100%; padding: 20px;
  background: var(--sage-soft);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 12px 28px rgba(30,51,18,.09);
}
.action-panel h3 { margin-bottom: 12px; color: var(--forest-mid); font-size: 1rem; font-family: 'Nunito', sans-serif; }

.reading-list-btn {
  width: 100%;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 14px;
  background: linear-gradient(135deg, var(--sage-dark), var(--forest-mid));
  color: #fff; border-radius: 13px;
  font-size: .9rem; font-weight: 800;
  box-shadow: 0 10px 22px rgba(47,70,30,.26);
}
.reading-list-btn.saved { background: linear-gradient(135deg, var(--gold), #8a6730); }

.rating-stars { display: grid; grid-template-columns: repeat(10,1fr); gap: 3px; margin-top: 10px; }
.rating-stars button { padding: 0; background: transparent; box-shadow: none; color: #b0a880; font-size: .95rem; min-width: 0; }
.rating-stars button:hover { transform: scale(1.2); color: #c8911a; }
.rating-numbers { display: grid; grid-template-columns: repeat(10,1fr); margin-top: 4px; color: var(--text-muted); font-size: .6rem; text-align: center; }

/* profile page */
.profile-section {
  display: grid; grid-template-columns: 220px 1fr;
  gap: 28px; min-height: 640px; padding: 28px;
  background: rgba(255,253,248,.82);
  border: 1.5px solid var(--border-soft);
  border-top: 3px solid var(--sage-dark);
  border-radius: 28px;
  box-shadow: var(--shadow-soft);
}
.profile-sidebar { padding-right: 24px; border-right: 1px solid var(--border); }

.profile-avatar {
  width: 82px; height: 82px;
  display: grid; place-items: center;
  margin-bottom: 14px;
  background: var(--sage-bg);
  border: 2px solid var(--border);
  border-radius: 50%;
  font-family: 'Nunito', sans-serif;
  font-size: 2rem;
  font-weight: 900;
  color: var(--forest-mid);
  text-transform: uppercase;
}

.profile-sidebar h2 { margin-bottom: 24px; color: var(--forest-mid); font-family: 'Nunito', sans-serif; }

.profile-menu { display: flex; flex-direction: column; gap: 12px; }
.profile-menu a { padding: 10px 12px; border-radius: 999px; color: var(--text-muted); font-weight: 700; }
.profile-menu a:hover { background: var(--sage-bg); color: var(--forest-mid); }

.profile-content { min-width: 0; }
.profile-header { margin-bottom: 26px; }
.profile-header h1 {
  color: var(--forest-mid);
  font-family: 'Nunito', sans-serif;
  font-size: 2.2rem; letter-spacing: -1.5px;
}
.profile-header p { margin-top: 6px; color: var(--text-muted); }

/* welcome banner */
.profile-welcome-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
  padding: 24px 30px;
  background: linear-gradient(135deg, var(--forest) 0%, var(--sage-dark) 100%);
  border-radius: 22px;
  box-shadow: 0 10px 32px rgba(15,30,8,.28);
  flex-wrap: wrap;
}
.pwb-text h1 {
  font-family: 'Nunito', sans-serif;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900;
  color: rgba(255,253,248,.96);
  letter-spacing: -.5px;
  line-height: 1.1;
  margin-bottom: 6px;
}
.pwb-text p {
  color: rgba(255,253,248,.65);
  font-size: .95rem;
  line-height: 1.5;
}
.pwb-stats {
  display: flex;
  gap: 20px;
  flex-shrink: 0;
}
.pwb-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 56px;
}
.pwb-stat-num {
  font-family: 'Nunito', sans-serif;
  font-size: 2rem;
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
}
.pwb-stat-label {
  font-size: .72rem;
  font-weight: 600;
  color: rgba(255,253,248,.48);
  text-transform: uppercase;
  letter-spacing: .06em;
  text-align: center;
}

/* three column layout */
.profile-lists-grid {
  display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 24px;
}
.profile-lists-grid.three-col {
  grid-template-columns: repeat(3, minmax(0,1fr));
}
.profile-panel {
  min-width: 0; padding: 22px;
  background: rgba(255,253,248,.9);
  border: 1.5px solid var(--border-soft);
  border-radius: 22px;
  box-shadow: var(--shadow-card);
}

.panel-header { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 18px; }
.panel-header h2 { color: var(--forest-mid); font-size: 1.1rem; font-family: 'Nunito', sans-serif; flex: 1; min-width: 80px; }
.panel-header label { display: flex; align-items: center; gap: 6px; color: var(--text-muted); font-size: .82rem; font-weight: 700; white-space: nowrap; }
.panel-header select { padding: 6px 10px; background: #fff; border: 1.5px solid var(--border); border-radius: 999px; color: var(--forest-mid); font-weight: 700; font-size: .82rem; max-width: 130px; }

.reading-list, .rated-books-list, #ratedBooksContainer {
  display: flex; flex-direction: column; gap: 14px;
}
.reading-list-item, .rated-book-item {
  display: grid; grid-template-columns: 58px 1fr auto;
  align-items: center; gap: 14px; padding: 12px;
  background: rgba(255,255,255,.85);
  border: 1px solid var(--border-soft);
  border-radius: 15px;
  box-shadow: 0 6px 16px rgba(30,51,18,.07);
}
.reading-list-item img, .rated-book-item img, .book-placeholder.small {
  width: 58px; height: 76px; object-fit: cover;
  border: 1px solid var(--border); border-radius: 9px;
}
.reading-list-item h3, .rated-book-info h3 {
  margin-bottom: 4px; color: var(--forest-mid);
  font-size: .95rem; line-height: 1.25; font-family: 'Nunito', sans-serif;
}
.reading-list-item p, .rated-book-info p { color: var(--text-muted); font-size: .85rem; }
.rated-score { white-space: nowrap; color: var(--forest-mid); font-weight: 900; font-size: 1rem; }
.score-star { color: #c8911a; }
.score-denom { color: var(--text-muted); font-size: .8em; font-weight: 600; }

.remove-reading-btn {
  background: #fff; color: #9b2c2c;
  border: 1px solid #e3b6b6; box-shadow: none; font-size: .82rem;
  padding: 7px 12px;
}
.remove-reading-btn:hover { background: #fff3f3; }

.mark-read-btn {
  background: var(--sage-soft);
  color: var(--forest-mid);
  border: 1px solid var(--border);
  box-shadow: none; font-size: .82rem;
  padding: 7px 12px;
}
.mark-read-btn:hover { background: var(--sage-bg); }
.mark-read-btn.done {
  background: var(--sage-dark);
  color: #fff;
  border-color: var(--sage-dark);
}

.unread-btn {
  background: #fff; color: var(--text-muted);
  border: 1px solid var(--border-soft); box-shadow: none; font-size: .82rem;
  padding: 7px 12px;
}
.unread-btn:hover { background: var(--sage-soft); }

.empty-state {
  padding: 42px 24px; text-align: center;
  background: var(--sage-soft);
  border: 1.5px dashed var(--border);
  border-radius: 20px;
}
.empty-state h2 { margin-bottom: 10px; color: var(--forest-mid); font-family: 'Nunito', sans-serif; }
.empty-state p  { margin-bottom: 20px; color: var(--text-muted); }

/* footer */
.site-footer {
  margin-top: clamp(4rem, 8vw, 6rem);
  padding: 3rem 1.5rem 1.5rem;
  background: var(--forest);
  border-top: none;
}

.footer-content {
  max-width: var(--max-width); margin: 0 auto;
  display: grid; grid-template-columns: 1.4fr .7fr 1fr;
  gap: clamp(2rem, 5vw, 4rem); align-items: start;
}

.footer-brand h2,
.footer-links h3,
.footer-social h3 { font-weight: 900; line-height: 1.2; }

.footer-brand h2 {
  margin-bottom: .8rem;
  font-family: 'Nunito', sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -.8px;
  color: rgba(255,253,248,.92);
}
.footer-links h3, .footer-social h3 {
  margin-bottom: .25rem; font-size: 1.05rem;
  color: rgba(255,253,248,.55);
  text-transform: uppercase; letter-spacing: .06em; font-size: .8rem;
}
.footer-brand p { color: rgba(255,253,248,.48); line-height: 1.7; font-size: .97rem; max-width: 340px; }

.footer-links, .footer-social, .footer-contact, .social-links {
  display: flex; flex-direction: column;
}
.footer-links, .footer-social, .footer-contact { gap: .75rem; }
.social-links { gap: .65rem; }

.footer-contact h3 {
  margin-bottom: .25rem;
  color: rgba(255,253,248,.55);
  text-transform: uppercase; letter-spacing: .06em; font-size: .8rem; font-weight: 900;
}

.footer-links a, .social-links a, .footer-contact a {
  width: fit-content; min-height: 40px;
  padding: .35rem .7rem;
  display: inline-flex; align-items: center; gap: .55rem;
  color: rgba(255,253,248,.72);
  border-radius: 999px; font-weight: 600; text-decoration: none;
  transition: transform .2s, color .2s, background .2s;
}
.footer-links a:hover, .social-links a:hover, .footer-contact a:hover {
  color: #fff;
  background: rgba(255,255,255,.1);
  transform: translateX(4px);
}
.footer-credit {
  margin-top: .5rem;
  color: rgba(255,253,248,.32);
  font-size: .84rem;
}

.footer-bottom {
  max-width: var(--max-width); margin: 2.5rem auto 0; padding-top: 1.2rem;
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,.1);
}
.footer-bottom p { font-size: .95rem; color: rgba(255,253,248,.35); }

/* responsive */
@media (max-width: 1200px) {
  .profile-lists-grid.three-col { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 1050px) {
  .book-details-card { grid-template-columns: 240px 1fr; }
  .details-actions {
    grid-column: 1 / -1; max-width: 100%;
    display: grid; grid-template-columns: 1fr 1fr;
    align-self: stretch; justify-self: stretch;
  }
  .details-cover { height: 330px; }
  .profile-lists-grid,
  .profile-lists-grid.three-col { grid-template-columns: 1fr; }
  .profile-welcome-banner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 820px) {
  .navbar { padding: 10px 14px; top: 8px; gap: 6px; }
  #welcomeText { display: none; }
  .welcome-area { flex: 0; gap: 6px; }
  .profile-link { padding: 8px 12px; font-size: .82rem; }
  .logout-btn { font-size: .82rem; padding: 8px 12px; }
  .auth-buttons { gap: 6px; }
  .auth-buttons .btn { font-size: .8rem; padding: 8px 10px; }
  .books-section { padding: 20px; }
  .profile-section { grid-template-columns: 1fr; }
  .profile-sidebar { padding-right: 0; padding-bottom: 20px; border-right: none; border-bottom: 1px solid var(--border); }
}
@media (max-width: 760px) {
  .book-details-card { grid-template-columns: 1fr; gap: 24px; padding: 22px; }
  .details-cover { height: 390px; }
  .details-info h1 { font-size: 2.1rem; letter-spacing: -1.2px; }
  .details-actions { grid-template-columns: 1fr; }
  .panel-header { align-items: flex-start; flex-direction: column; }
  .reading-list-item, .rated-book-item { grid-template-columns: 58px 1fr; }
  .rated-score, .remove-reading-btn { grid-column: 1 / -1; justify-self: start; }
}
@media (max-width: 520px) {
  main { width: min(100% - 20px, var(--max-width)); }
  .books-grid { grid-template-columns: 1fr; }
  .book-card { max-width: 270px; }
}
@media (max-width: 480px) {
  .details-cover { height: 320px; }
  .book-details-card { border-radius: 22px; }
}
@media (max-width: 850px) {
  .footer-content { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .site-footer { padding: 2.5rem 1rem 1.2rem; }
  .footer-content { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; }
  .footer-links a, .social-links a { min-height: 44px; }
}

/* toast notification */
.toast {
  position: fixed;
  bottom: 28px; right: 24px;
  padding: 13px 20px;
  background: var(--forest-mid);
  color: rgba(255,253,248,.95);
  border-radius: 14px;
  font-size: .92rem; font-weight: 600;
  box-shadow: 0 8px 28px rgba(0,0,0,.28);
  z-index: 9999;
  pointer-events: none;
  max-width: 300px;
  transform: translateY(16px);
  opacity: 0;
  transition: transform .25s ease, opacity .25s ease;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.error { background: #7f2020; }

/* mark as read button on details page */
.mark-read-direct-btn {
  width: 100%;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 14px; margin-top: 8px;
  background: var(--sage-soft);
  color: var(--forest-mid);
  border: 1.5px solid var(--border);
  border-radius: 13px;
  font-size: .9rem; font-weight: 700;
}
.mark-read-direct-btn:hover { background: var(--sage-bg); }
.mark-read-direct-btn.done {
  background: var(--sage-dark); color: #fff;
  border-color: var(--sage-dark); opacity: .75; cursor: default;
}

/* dark theme */
body.theme-dark {
  --bg-main: #0b1020; --bg-card: #111827; --bg-soft: #182235;
  --primary: #60a5fa; --primary-dark: #f8fafc; --primary-light: #1e293b;
  --accent: #facc15; --accent-soft: #334155;
  --text-main: #f8fafc; --text-muted: #cbd5e1; --border: #263348;
  --shadow-soft: 0 18px 40px rgba(0,0,0,.45);
  --shadow-card: 0 12px 30px rgba(0,0,0,.35);
  background:
    radial-gradient(circle at top left, rgba(96,165,250,.12), transparent 35%),
    linear-gradient(135deg, #0b1020 0%, #111827 55%, #0f172a 100%);
  color: var(--text-main);
}
body.theme-dark .navbar,
body.theme-dark .books-section,
body.theme-dark .book-details-card,
body.theme-dark .profile-section,
body.theme-dark .auth-form,
body.theme-dark .profile-panel,
body.theme-dark .action-panel,
body.theme-dark .details-cover-wrap,
body.theme-dark .reading-list-item,
body.theme-dark .rated-book-item,
body.theme-dark .empty-state {
  background: linear-gradient(180deg, #141f33 0%, #101827 100%);
  border-color: var(--border);
}
body.theme-dark .book-card {
  background: linear-gradient(180deg, #141f33 0%, #101827 100%);
  border-color: var(--border);
}
body.theme-dark input, body.theme-dark select,
body.theme-dark textarea, body.theme-dark .meta-pill {
  background: #0f172a; color: var(--text-main); border-color: #334155;
}
body.theme-dark input::placeholder { color: #94a3b8; }
body.theme-dark option { background: #0f172a; color: var(--text-main); }
body.theme-dark .rating-star, body.theme-dark .rating-number,
body.theme-dark .rated-score { color: var(--accent); }
body.theme-dark .remove-reading-btn {
  background: transparent; color: #fca5a5; border-color: #7f1d1d;
}
body.theme-dark .remove-reading-btn:hover { background: #7f1d1d; color: white; }