/* Base font size */
html {
  font-size: 16px;
}

/* Custom properties */
:root {
  /* Brand */
  --color-primary: #1a365d;
  --color-secondary: #77574d;
  --color-neutral: #43474e;
  --color-danger: #bc1720;
  /* Backgrounds */
  --color-bg: #fbf8f1;
  --color-bg-nav: rgba(252, 249, 244, 0.7);
  --color-bg-dropdown: #ebe8e3;
  /* Hover states */
  --color-hover-icon: #e5e2dd;
  --color-hover-button-default-add: #2a527a;
  --color-hover-button-default-browse: #f0ede8;
  --color-hover-button-cancel: #ebe8e3;
  --color-hover-button-dropdown: #e5e2dd;
  --color-hover-card: #f9f6f1;
  --color-hover-icon-read: #7e5e55;
  /* Typography */
  --font-family-body: "Manrope", sans-serif;
  --font-family-heading: "Newsreader", serif;
  --font-size-3xs: 0.625rem; /* 10px */
  --font-size-2xs: 0.6875rem; /* 11px */
  --font-size-xs: 0.75rem; /* 12px */
  --font-size-sm: 0.8125rem; /* 13px */
  --font-size-md: 0.875rem; /* 14px */
  --font-size-base: 1rem; /* 16px */
  --font-size-lg: 1.125rem; /* 18px */
  --font-size-xl: 1.25rem; /* 20px */
  --font-size-2xl: 1.5rem; /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem; /* 36px */
  --font-size-5xl: 3rem; /* 48px */
  --font-size-6xl: 3.75rem; /* 60px */
  --font-size-7xl: 4.5rem; /* 72px */
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  /* Shadows */
  --shadow-nav: 0 16px 32px 0 rgba(28, 28, 25, 0.06);
  --shadow-button-default:
    0 20px 25px -5px rgb(0, 0, 0, 0.1), 0 8px 10px -6px rgb(0, 0, 0, 0.1);
  --shadow-button-floating: 0 25px 50px -12px rgb(0, 0, 0, 0.25);
  --shadow-button-modal: 0 32px 64px -12px rgb(0, 32, 69, 0.2);
}

/* CSS Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
  padding: 0;
}
@media (prefers-reduced-motion: no-preference) {
  html {
    interpolate-size: allow-keywords;
  }
}
body {
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}
input,
button,
textarea,
select {
  font: inherit;
}
p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}
p {
  text-wrap: pretty;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  text-wrap: balance;
}

html,
body {
  height: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-neutral);
  font-family: var(--font-family-body);
  height: auto;
  min-height: 100%;
}

.container {
  padding: 0 clamp(24px, 4vw, 48px) 160px;
}

/* Nav styles */
.navbar {
  background-color: var(--color-bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-nav);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-icon {
  width: 18px;
  fill: var(--color-primary);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
}

.nav-item {
  list-style-type: none;
}

.nav-item a {
  text-decoration: none;
}

.nav-item:first-child,
.nav-item:last-child {
  position: relative;
  cursor: pointer;
}

.nav-item:first-child::before,
.nav-item:last-child::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background-color: transparent;
}

.nav-item:first-child:hover::before,
.nav-item:last-child:hover::before {
  background-color: rgba(0, 0, 0, 0.08);
}

.nav-title {
  font-size: var(--font-size-2xl);
  font-family: var(--font-family-heading);
  font-style: italic;
  font-weight: 700;
  color: var(--color-primary);
}

.nav-right {
  margin-left: auto;
}

/* Default content */
.default {
  display: grid;
  grid-template-columns: 1fr 1fr;
  place-items: center;
}

.default > * {
  grid-column: 1 / -1;
}

.library-image {
  width: clamp(192px, 25vw, 256px);
}

.library-image-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.library-image-container::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: rgb(0, 32, 69, 0.5);
  z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 -960 960 960' fill='rgb(255 255 255)' fill-opacity='0.2'><path d='M479.23-185.39q-48.38-35.69-104-55.15Q319.62-260 260-260q-36.61 0-71.92 8.11Q152.77-243.77 120-228q-21.38 9.84-40.69-2.93Q60-243.69 60-267.08v-433.53q0-12.93 6.85-23.89 6.84-10.96 19-15.96 40.61-19.77 84.65-29.65Q214.54-780 260-780q58.38 0 113.69 16.54Q429-746.92 480-716.92v459.38q50.62-32 106.81-47.23Q643-320 700-320q34.46 0 65.11 4.85 30.66 4.84 63.35 15.3 4.23 1.16 7.89.2 3.65-.97 3.65-6.35v-449.23q10.38 3.08 20.27 6.85 9.88 3.77 19.27 9.46 10.23 5 15.34 14.61 5.12 9.62 5.12 20.62v435.84q0 23.39-19.89 35.96-19.88 12.58-42.42 3.12-32.38-15.39-67.11-23.31Q735.85-260 700-260q-60 0-116.38 18.88-56.39 18.89-104.39 55.73ZM560-360v-360l200-200v380L560-360Zm-140 73.46v-394.07q-37.61-18.62-77.92-29.01Q301.77-720 260-720q-37 0-70.27 6.81-33.27 6.81-62.42 18.88-3.08 1.16-5.19 3.27-2.12 2.12-2.12 5.19v381.23q0 5.39 3.65 6.35 3.66.96 7.89-.58 29.61-10.69 61.04-15.92Q224-320 260-320q44.85 0 85.69 9.27 40.85 9.27 74.31 24.19Zm0 0v-394.07 394.07Z'/></svg%3E");
  background-size: 30%;
  background-repeat: no-repeat;
  background-position: center;
}

.asymmetrical-detail {
  background-color: var(--color-secondary);
  border-radius: var(--radius-xl);
  padding: 12px;
  bottom: -20px;
  right: -20px;
  z-index: 1;
  position: absolute;
}

.feather-icon {
  width: 16px;
  fill: #fff;
}

.default-hero-image {
  position: relative;
  width: max-content;
  margin-top: 75px;
}

.default-heading {
  margin-top: 48px;
}

.default-heading h2 {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-4xl);
  color: var(--color-primary);
  font-weight: 600;
  text-align: center;
  line-height: 1.3;
}

.default-heading span {
  font-style: italic;
}

.default-description {
  max-width: 425px;
  margin-top: 24px;
  line-height: 1.3;
}

.default-description p {
  font-size: var(--font-size-lg);
  text-align: center;
}

.default-add-button-container {
  margin-top: 56px;
}

.default-browse-button-container {
  margin-top: 16px;
}

.default-add-button,
.default-browse-button {
  background: none;
  cursor: pointer;
  max-width: 227px;
  padding: 12px 30px;
  border: none;
  border-radius: var(--radius-sm);
}

.default-add-button {
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 500;
  display: flex;
  gap: 12px;
  align-items: center;
}

.default-add-button:hover {
  background-color: var(--color-hover-button-default-add);
}

.default-browse-button {
  background-color: var(--color-bg);
  color: var(--color-secondary);
  font-weight: 400;
  display: flex;
  gap: 8px;
  align-self: center;
  max-width: 252px;
}

.default-browse-button:hover {
  background-color: var(--color-hover-button-default-browse);
}

.add-box-icon {
  fill: #fff;
  width: 20px;
}

.book-icon {
  fill: var(--color-secondary);
  width: 20px;
}

/* Hero */
.hero-container {
  margin: 32px 0 64px;
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: 3fr 1fr;
}

.hero > * {
  grid-column: 1 / -1;
}

.down-arrow-icon {
  width: 12px;
  fill: #1c1c19;
}

.hero-eyebrow {
  font-size: var(--font-size-xs);
  color: var(--color-secondary);
  text-transform: uppercase;
  font-weight: 600;
}

.hero-title {
  font-size: clamp(var(--font-size-5xl), 5vw + 1rem, var(--font-size-7xl));
  font-family: var(--font-family-heading);
  font-weight: 400;
  text-transform: capitalize;
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  font-weight: 400;
  line-height: 1.4;
  max-width: 468px;
}

.hero-sort-btn {
  border: none;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  font-weight: 700;
  color: var(--color-neutral);
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--color-bg-dropdown);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  letter-spacing: 1.2px;
  width: max-content;
  height: max-content;
}

/* Modal */
dialog {
  border: none;
  outline: none;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 95%;
  max-width: 512px;
  max-height: 90vh;
  overflow-y: auto;
  background-color: #fcf9f4;
  border-radius: var(--radius-lg);
  padding: 24px 32px;
}

dialog::backdrop {
  background: rgb(0, 32, 69, 0.4);
}

.form-close-btn {
  background: none;
  border: none;
  cursor: pointer;
  position: absolute;
  top: 16px;
  right: 16px;
}

.form-close-btn::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background-color: transparent;
}

.form-close-btn:hover:before {
  background-color: rgba(0, 0, 0, 0.08);
}

.close-icon {
  width: 20px;
  fill: #43474e;
}

.modal-heading {
  font-size: var(--font-size-3xl);
  color: #002045;
  font-family: var(--font-family-heading);
  text-transform: capitalize;
  font-weight: 700;
  line-height: 1;
}

.modal-heading-container p {
  font-size: var(--font-size-3xs);
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-neutral);
}

.modal-heading-container {
  position: relative;
}

.modal-list {
  list-style-type: none;
  margin: 40px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  row-gap: 24px;
  column-gap: 20px;
}

.modal-input {
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid #c4c6cf;
  grid-column: 1 / -1;
}

.modal-input:nth-last-child(2) {
  grid-column: 1;
}

.modal-input:last-child {
  grid-column: 2 / 3;
  border: none;
  display: flex;
  gap: 16px;
}

.modal-input label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-neutral);
}

.modal-input input {
  background-color: #fcf9f4;
  outline: none;
  border: none;
  padding: 14px 0;
  width: 100%;
}

.modal-input input::placeholder {
  font-size: var(--font-size-lg);
  color: #c4c6cf;
}

.modal-input .toggle-label {
  font-size: var(--font-size-xs);
  text-transform: capitalize;
}

.form-button,
.form-cancel-button {
  display: block;
  width: 100%;
  text-align: center;
  border-radius: var(--radius-md);
  border: none;
  font-size: var(--font-size-md);
  padding: 16px;
  font-weight: 600;
  cursor: pointer;
}

.form-button {
  background-color: #002045;
  color: #fff;
  margin-bottom: 20px;
  box-shadow:
    0 10px 15px -3px rgb(0, 32, 69, 0.2),
    0 4px 6px -4px rgb(0, 32, 69, 0.2);
}

.form-button:hover {
  background-color: var(--color-hover-button-default-add);
}

.form-cancel-button {
  color: var(--color-neutral);
  background-color: #fcf9f4;
}

.form-cancel-button:hover {
  background-color: var(--color-hover-button-cancel);
  color: var(--color-primary);
}

.toggle-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  display: inline-flex;
  align-items: center;
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background-color: #e5e2dd;
  padding: 2px;
  transition: background-color 0.2s ease;
  flex-shrink: 0;
}

.toggle-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  transition: transform 0.2s ease;
}

.toggle-input:checked + .toggle-track {
  background-color: var(--color-primary);
}

.toggle-input:checked + .toggle-track .toggle-thumb {
  transform: translateX(20px);
}

.toggle-input:focus-visible + .toggle-track {
  outline: 2px solid #095fca;
  outline-offset: 2px;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

/* FAB */
.fab-icon {
  width: 28px;
  fill: #fff;
  transition: transform 0.3s ease;
}

.fab {
  border: none;
  padding: 24px;
  background-color: var(--color-primary);
  border-radius: var(--radius-xl);
  cursor: pointer;
  position: fixed;
  bottom: 34px;
  right: 32px;
  display: none;
}

.fab:hover {
  background-color: var(--color-hover-button-default-add);
}

.fab:hover .fab-icon {
  transform: rotate(90deg);
}

.active {
  display: block;
}

.hidden {
  display: none;
}

/* Card */
.card {
  display: grid;
  grid-template-columns: 3fr 1fr;
  background-color: var(--color-bg);
  border-top: 1px solid #f1efed;
  padding: 48px 0 76px;
}

.card:last-child {
  border-bottom: 1px solid #f1efed;
}

.card > * {
  grid-column: 1 / -1;
}

.card-status {
  font-size: var(--font-size-3xs);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 2px;
}

.card-status-unread {
  opacity: 0.4;
}

.card-status-complete {
  color: var(--color-secondary);
}

.card-title {
  font-size: clamp(var(--font-size-3xl), 5vw + 1rem, var(--font-size-4xl));
  line-height: 1.375;
  font-family: var(--font-family-heading);
  font-style: italic;
  color: #002045;
  font-weight: 500;
}

.card-author {
  font-size: var(--font-size-base);
  font-weight: 400;
  letter-spacing: 0.4px;
}

.card-pages {
  font-size: var(--font-size-2xs);
  opacity: 0.6;
  text-transform: uppercase;
  letter-spacing: 0.55px;
  line-height: 16.5px;
  font-weight: 400;
}

.card-buttons {
  margin-top: 6px;
}

.check-icon,
.xmark-icon,
.remove-icon {
  width: 18px;
  fill: var(--color-neutral);
  opacity: 0.6;
}

.read-status-button,
.delete-button {
  border: none;
  cursor: pointer;
  background-color: var(--color-bg);
}

.read-status-button {
  margin-right: 16px;
}

.read-status-button:has(svg.xmark-icon) {
  position: relative;
}

.read-status-button:has(svg.xmark-icon)::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: transparent;
}

.read-status-button:has(svg.xmark-icon):hover::before {
  background-color: rgb(188, 23, 32, 0.125);
}

.read-status-button:hover .xmark-icon {
  fill: var(--color-danger);
  opacity: 1;
}

.read-status-button:has(svg.check-icon) {
  position: relative;
}

.read-status-button:has(svg.check-icon)::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: transparent;
}

.read-status-button:has(svg.check-icon):hover::before {
  background-color: rgba(34, 197, 94, 0.125);
}

.read-status-button:hover .check-icon {
  fill: rgba(34, 197, 94);
  opacity: 1;
}

.delete-button {
  position: relative;
}

.delete-button::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: transparent;
}

.delete-button:hover::before {
  background-color: rgb(188, 23, 32, 0.125);
}

.delete-button:hover .remove-icon {
  fill: var(--color-danger);
  opacity: 1;
}

@media (min-width: 768px) {
  .default-hero-image {
    margin-top: 62px;
  }
  .default-add-button-container {
    grid-column: 1 / 2;
    justify-self: end;
    margin-top: 56px;
    margin-right: 16px;
  }
  .default-browse-button-container {
    grid-column: 2 / 3;
    justify-self: start;
    margin-top: 56px;
  }
  .default-description {
    line-height: 1.4;
  }
  .hero-eyebrow,
  .hero-title,
  .hero-subtitle {
    grid-column: 1;
  }
  .hero-sort-btn {
    grid-column: 2 / 3;
    align-self: end;
    justify-self: end;
  }
  .card > * {
    grid-column: 1 / 2;
  }
  .card-buttons {
    grid-column: 2 / 3;
    grid-row: 1 / 5;
    align-self: center;
    justify-self: end;
  }
  .card-buttons {
    margin: 0;
  }
}