:root {
  --leaf: #3f6f45;
  --moss: #6f8f55;
  --orange: #d77d32;
  --clay: #8a5637;
  --ink: #2b241f;
  --paper: #fffaf0;
  --cream: #f7eedc;
  --line: rgba(63, 48, 37, 0.18);
  --shadow: 0 18px 45px rgba(46, 35, 24, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at 18% 8%, rgba(215, 125, 50, 0.24), transparent 32%),
    radial-gradient(circle at 88% 18%, rgba(63, 111, 69, 0.24), transparent 34%),
    linear-gradient(135deg, #fffaf0 0%, #f1dfc4 44%, #e7c7a1 100%);
  min-height: 100vh;
}

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

button,
a {
  min-height: 40px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px clamp(16px, 4vw, 44px);
  background: rgba(255, 250, 240, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
}

.brand small,
.muted {
  color: rgba(43, 36, 31, 0.68);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  color: #fffaf0;
  background: linear-gradient(135deg, var(--leaf), var(--orange));
  font-weight: 800;
}

.main-nav,
.hero-actions,
.site-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.main-nav a,
.site-footer a,
.primary-link,
.secondary-link {
  color: inherit;
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 8px;
}

.main-nav a,
.main-nav button {
  flex: 0 0 auto;
}

.main-nav a:hover,
.site-footer a:hover,
.main-nav a.active {
  background: rgba(63, 111, 69, 0.11);
}

.main-nav a[data-category] {
  border: 1px solid transparent;
}

.main-nav a[data-category].active {
  border-color: rgba(63, 111, 69, 0.28);
  color: #244b2b;
  font-weight: 700;
}

.icon-button {
  border: 1px solid var(--line);
  background: #fff7e8;
  border-radius: 8px;
  cursor: pointer;
  padding: 8px 12px;
}

.user-button {
  position: relative;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff7e8;
  cursor: pointer;
}

.user-button span::before,
.user-button span::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: var(--leaf);
}

.user-button span::before {
  top: 9px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.user-button span::after {
  bottom: 8px;
  width: 24px;
  height: 15px;
  border-radius: 16px 16px 7px 7px;
}

.hero {
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  padding: clamp(28px, 5vw, 60px);
  background:
    linear-gradient(rgba(38, 29, 20, 0.2), rgba(38, 29, 20, 0.34)),
    url("assets/cc0-book-watercolor.svg") center/cover;
}

.hero-copy {
  max-width: 760px;
  color: #fffaf0;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.38);
}

.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(48px, 8vw, 92px);
  line-height: 0.95;
}

.hero p {
  max-width: 680px;
  font-size: clamp(18px, 2.2vw, 26px);
}

.primary-link,
.secondary-link,
button[type="submit"],
.secondary-button {
  border: 0;
  cursor: pointer;
  font-weight: 700;
}

.primary-link,
button[type="submit"] {
  color: #fffaf0;
  background: var(--leaf);
}

.secondary-link,
.secondary-button {
  color: var(--ink);
  background: #fff3dd;
  border: 1px solid var(--line);
}

main {
  padding-bottom: 40px;
}

.toolbar,
.account-admin-grid,
.sell-panel,
.book-grid,
.admin-main,
.legal-document {
  width: min(1180px, calc(100% - 32px));
  margin: 24px auto;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 14px;
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 250, 240, 0.88);
  color: var(--ink);
  padding: 11px 12px;
}

textarea {
  min-height: 96px;
  resize: vertical;
}

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px;
}

.book-card,
.panel,
.modal-content,
.cart-drawer,
.legal-page {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.book-card {
  overflow: hidden;
  display: grid;
  align-content: start;
}

.book-card img,
.modal-cover {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: #d8c3a2;
}

.book-body {
  display: grid;
  gap: 10px;
  padding: 14px;
}

.book-title {
  margin: 0;
  font-size: 20px;
}

.price {
  font-weight: 800;
  color: var(--clay);
}

.stock-pill {
  display: inline-flex;
  width: fit-content;
  border-radius: 999px;
  padding: 5px 9px;
  background: rgba(63, 111, 69, 0.13);
  color: #244b2b;
  font-size: 13px;
}

.account-admin-grid {
  display: grid;
  grid-template-columns: minmax(280px, 420px) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.panel,
.legal-page {
  padding: 18px;
}

.stacked-form {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.checkbox-line {
  display: flex;
  align-items: center;
  gap: 10px;
}

.checkbox-line input {
  width: auto;
}

.google-button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
}

.current-user {
  padding: 12px;
  border-radius: 8px;
  background: rgba(215, 125, 50, 0.13);
}

.admin-list,
.review-list,
.cart-list {
  display: grid;
  gap: 10px;
}

.admin-item,
.review-item,
.cart-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.45);
}

.admin-actions,
.card-actions,
.quantity-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.card-actions button,
.admin-actions button,
.review-item button,
.quantity-row button {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 10px;
  background: #fff7e8;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 50;
  width: min(420px, 100%);
  height: 100vh;
  overflow: auto;
  padding: 18px;
  background: var(--paper);
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 18px;
  background: var(--paper);
}

.modal-content {
  position: relative;
  width: min(920px, 100%);
  max-height: 92vh;
  overflow: auto;
  padding: 18px;
  background: var(--paper);
}

.auth-modal-content {
  width: min(520px, 100%);
}

.admin-main,
.legal-document {
  min-height: 58vh;
}

.modal-close {
  position: absolute;
  right: 12px;
  top: 12px;
}

.modal-layout {
  display: grid;
  grid-template-columns: minmax(220px, 330px) minmax(0, 1fr);
  gap: 18px;
}

.stars {
  color: #b55f18;
  font-weight: 800;
}

.site-footer {
  justify-content: center;
  padding: 26px;
  border-top: 1px solid var(--line);
  background: rgba(74, 83, 51, 0.16);
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 18px auto 32px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 20px;
  z-index: 90;
  transform: translateX(-50%);
  padding: 12px 16px;
  border-radius: 8px;
  color: #fffaf0;
  background: var(--ink);
  box-shadow: var(--shadow);
}

.hidden {
  display: none !important;
}

@media (max-width: 760px) {
  body {
    background:
      linear-gradient(135deg, #fffaf0 0%, #f1dfc4 52%, #e7c7a1 100%);
  }

  .site-header,
  .main-nav {
    align-items: flex-start;
  }

  .site-header,
  .toolbar,
  .account-admin-grid,
  .modal-layout {
    grid-template-columns: 1fr;
  }

  .site-header {
    display: grid;
    gap: 12px;
    padding: 12px 14px;
  }

  .brand {
    width: 100%;
  }

  .brand small {
    display: block;
  }

  .main-nav {
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }

  .hero {
    min-height: 360px;
    padding: 28px 16px;
    align-items: flex-end;
  }

  .hero h1 {
    font-size: 48px;
  }

  .hero p {
    font-size: 18px;
  }

  .toolbar,
  .book-grid,
  .admin-main,
  .legal-document {
    width: min(100% - 24px, 1180px);
    margin: 16px auto;
  }

  .book-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .book-card {
    grid-template-columns: 112px minmax(0, 1fr);
  }

  .book-card img {
    height: 100%;
    min-height: 190px;
  }

  .book-body {
    padding: 12px;
  }

  .book-title {
    font-size: 18px;
  }

  .book-body p {
    margin: 0;
  }

  .card-actions,
  .admin-actions,
  .quantity-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .card-actions button,
  .admin-actions button,
  .review-item button,
  .quantity-row button,
  button[type="submit"],
  .secondary-button,
  .google-button {
    width: 100%;
  }

  .cart-drawer {
    width: 100%;
    padding: 16px;
  }

  .modal {
    align-items: start;
    padding: 12px;
    overflow: auto;
  }

  .modal-content {
    width: 100%;
    max-height: none;
    min-height: calc(100vh - 24px);
    padding: 16px;
  }

  .modal-close {
    position: sticky;
    top: 0;
    margin-left: auto;
    display: block;
  }

  .modal-cover {
    max-height: 420px;
  }

  .toast {
    width: calc(100% - 24px);
    bottom: 12px;
    text-align: center;
  }
}

@media (max-width: 430px) {
  .book-card {
    grid-template-columns: 96px minmax(0, 1fr);
  }

  .book-card img {
    min-height: 180px;
  }

  .stock-pill {
    font-size: 12px;
  }
}