/* =====================================================================
   BookExpert — базовые стили приложения
   ===================================================================== */

:root {
  --bg: #f6f3ec;
  --surface: #ffffff;
  --ink: #1f1d1a;
  --ink-soft: #6b665d;
  --line: #e4ded2;
  --accent: #7c3aed;
  --accent-dark: #5b21b6;
  --accent-soft: #ede9fe;
  --good: #16a34a;
  --bad: #dc2626;
  --warn: #d97706;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(31, 29, 26, 0.08);
  --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  text-decoration: underline;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 0.5rem;
}

h1 {
  font-size: 1.9rem;
}

h2 {
  font-size: 1.4rem;
}

.container {
  width: min(1100px, 100% - 2rem);
  margin-inline: auto;
}

.page {
  flex: 1;
  padding: 2rem 0 3rem;
}

.muted {
  color: var(--ink-soft);
}

.section-title {
  margin-top: 2.5rem;
}

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

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: var(--ink);
}

.brand:hover {
  text-decoration: none;
}

.brand__logo {
  font-size: 1.5rem;
}

.brand__name {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand__tagline {
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.site-nav__link {
  color: var(--ink-soft);
  font-weight: 500;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--ink);
  border-bottom-color: var(--accent);
  text-decoration: none;
}

.site-nav__user {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.inline-form {
  display: inline;
}

.locale-switch {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink-soft);
}

.locale-switch:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
  color: var(--ink-soft);
  font-size: 0.85rem;
  text-align: center;
}

/* ---------- Flash messages ---------- */

.flash {
  padding: 0.8rem 1rem;
  border-radius: 10px;
  margin-bottom: 1.2rem;
  border: 1px solid transparent;
}

.flash--notice {
  background: #ecfdf5;
  border-color: #a7f3d0;
  color: #065f46;
}

.flash--alert {
  background: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.2rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.btn:hover {
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: wait;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.25);
}

.btn--primary:hover {
  background: var(--accent-dark);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--small {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

.btn--block {
  width: 100%;
}

/* ---------- Forms ---------- */

.form__field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.form__field label {
  font-weight: 600;
  font-size: 0.9rem;
}

.form__field input,
.form__field textarea,
.select {
  font: inherit;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form__field input:focus,
.form__field textarea:focus,
.select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

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

.form__actions {
  margin-top: 1.2rem;
}

.form__errors {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  border-radius: 10px;
  padding: 0.8rem 1rem;
  margin-bottom: 1rem;
}

.form__errors p {
  margin: 0 0 0.3rem;
  font-weight: 600;
}

.form__errors ul {
  margin: 0;
  padding-left: 1.2rem;
}

/* ---------- Auth pages ---------- */

.auth-card {
  max-width: 420px;
  margin: 2rem auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.auth-card__title {
  text-align: center;
  margin-bottom: 1.5rem;
}

.auth-card__hint {
  text-align: center;
  color: var(--ink-soft);
  margin: 1.2rem 0 0;
  font-size: 0.95rem;
}

/* ---------- Workspace ---------- */

.workspace__header {
  margin-bottom: 1.5rem;
}

.workspace__subtitle {
  color: var(--ink-soft);
  margin: 0;
  max-width: 60ch;
}

.workspace__toolbar {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}

.workspace__label {
  font-weight: 600;
}

.select {
  min-width: 260px;
}

.workspace__progress {
  margin-left: auto;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.9rem;
}

.workspace__progress:empty {
  display: none;
}

.workspace__status {
  color: var(--ink-soft);
  padding: 1rem 0;
}

/* ---------- Book card ---------- */

.book-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.book-card.is-loading {
  opacity: 0.5;
  pointer-events: none;
}

.book-card.is-entering {
  animation: card-in 0.35s ease both;
}

.book-card.is-leaving {
  animation: card-out 0.35s ease both;
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes card-out {
  from {
    opacity: 1;
    transform: none;
  }
  to {
    opacity: 0;
    transform: translateX(-30px) scale(0.98);
  }
}

.book-card__cover img {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: 10px;
  background: #e9e4d8;
  box-shadow: 0 12px 24px rgba(31, 29, 26, 0.18);
}

.book-card__genre {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
}

.book-card__title {
  font-size: 1.6rem;
}

.book-card__meta {
  color: var(--ink-soft);
  margin: 0 0 1rem;
}

.book-card__meta-label {
  font-weight: 600;
}

.book-card__meta-sep {
  margin: 0 0.4rem;
}

.book-card__description {
  margin: 0 0 1.5rem;
  max-width: 65ch;
}

.book-card__stats {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin: -0.6rem 0 1.2rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.book-card__stats-label {
  font-weight: 600;
}

.book-card__average {
  font-weight: 800;
  color: var(--accent);
  font-size: 1.1rem;
}

/* ---------- Instagram-style slider sticker ---------- */

.slider {
  margin-bottom: 1.4rem;
  padding: 1.6rem 1.2rem 1rem;
  background: linear-gradient(135deg, #fdf4ff 0%, #f5f3ff 50%, #eff6ff 100%);
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.slider__label {
  display: block;
  font-weight: 700;
  margin-bottom: 2.6rem;
}

.slider__track-wrap {
  position: relative;
  padding: 0.4rem 0;
}

.slider__bubble {
  --bubble-color: var(--accent);
  position: absolute;
  top: -2.4rem;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--bubble-color);
  color: #fff;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-weight: 800;
  font-size: 1rem;
  white-space: nowrap;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.18);
  transition: background 0.15s ease;
  pointer-events: none;
}

.slider__bubble::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  width: 12px;
  height: 12px;
  background: var(--bubble-color);
  transform: translateX(-50%) rotate(45deg);
  border-radius: 2px;
}

.slider__emoji {
  font-size: 1.15rem;
}

.slider__input {
  --fill: 50%;
  --fill-color: var(--accent);
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--fill-color) 0%, var(--fill-color) var(--fill), #e5e1d8 var(--fill), #e5e1d8 100%);
  outline: none;
  cursor: pointer;
  margin: 0;
}

.slider__input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--fill-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transition: transform 0.1s ease;
}

.slider__input::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--fill-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.slider__input:active::-webkit-slider-thumb {
  transform: scale(1.15);
}

.slider__input:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.slider__scale {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 0.6rem;
}

/* ---------- Done panel / empty state ---------- */

.done-panel,
.empty-state {
  text-align: center;
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 3rem 1.5rem;
}

.done-panel__icon,
.empty-state__icon {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

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

.profile__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}

.profile__greeting {
  color: var(--ink-soft);
  margin: 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
}

.stat__value {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.stat__label {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.stat__hint {
  margin-top: 0.4rem;
  font-size: 0.85rem;
  color: var(--ink);
}

.stat--good .stat__value {
  color: var(--good);
}

.stat--bad .stat__value {
  color: var(--bad);
}

.recommendation {
  margin-top: 1.2rem;
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
}

.recommendation h3 {
  margin-bottom: 0.3rem;
}

.recommendation p {
  margin: 0 0 0.6rem;
}

/* ---------- Tables ---------- */

.table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.table th,
.table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.table thead th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  background: #faf8f3;
}

.table tbody tr:last-child td {
  border-bottom: none;
}

.table__num {
  text-align: right;
  white-space: nowrap;
}

.table__comment {
  max-width: 36ch;
}

.table__bar {
  width: 30%;
}

.bar {
  height: 10px;
  background: #ece8df;
  border-radius: 999px;
  overflow: hidden;
}

.bar__fill {
  height: 100%;
  background: linear-gradient(90deg, #a78bfa, var(--accent));
  border-radius: 999px;
}

.rating-badge {
  display: inline-block;
  min-width: 2.8rem;
  text-align: center;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-weight: 700;
  color: #fff;
}

.rating-badge--terrible {
  background: #dc2626;
}

.rating-badge--weak {
  background: #f97316;
}

.rating-badge--average {
  background: #eab308;
}

.rating-badge--good {
  background: #22c55e;
}

.rating-badge--masterpiece {
  background: #7c3aed;
}

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

@media (max-width: 760px) {
  .book-card {
    grid-template-columns: 1fr;
  }

  .book-card__cover {
    max-width: 220px;
    margin-inline: auto;
  }

  .workspace__progress {
    margin-left: 0;
  }

  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}