/* ============================================================
   КнигоСвод — тёплая библиотека с витражным окном
   Палитра: крем, шалфей, янтарь, терракота, графит
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg:        #F5EFE6;   /* тёплый крем — фон */
  --bg-soft:   #EFE7D7;   /* чуть темнее — боковая панель */
  --surface:   #FFFFFF;   /* карточки */
  --sage:      #2F4F4A;   /* глубокий шалфей — шапка, акцент текста */
  --sage-dark: #1E3631;
  --amber:     #D4A24C;   /* янтарь — кнопки */
  --amber-dk:  #B98A34;
  --terra:     #B85C38;   /* терракота — обмены, опасные действия */
  --ink:       #2B2B2B;   /* тёмный графит — основной текст */
  --muted:     #7A6A52;   /* приглушённый текст */
  --line:      #E2D8C6;   /* линии, разделители */
  --shadow:    0 6px 20px rgba(0,0,0,.06);
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', 'PT Sans', sans-serif;
  line-height: 1.55;
  min-height: 100vh;
}

/* лёгкий «витражный» свет на фоне */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 15% 10%, rgba(212,162,76,.10) 0, transparent 35%),
    radial-gradient(circle at 85% 90%, rgba(184,92,56,.08) 0, transparent 35%),
    radial-gradient(circle at 50% 50%, rgba(47,79,74,.04) 0, transparent 60%);
  pointer-events: none;
  z-index: -1;
}

a { color: var(--sage); text-decoration: none; }
a:hover { color: var(--amber); }

/* ---------- Шапка ---------- */
.topbar {
  background: var(--sage);
  color: #F5EFE6;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 12px rgba(0,0,0,.15);
  position: sticky;
  top: 0;
  z-index: 50;
}
.logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: #F5EFE6;
  letter-spacing: .02em;
}
.logo:hover { color: var(--amber); }
.topnav a {
  color: #F5EFE6;
  margin-left: 1.5rem;
  font-size: .95rem;
  opacity: .85;
  transition: opacity .2s, color .2s;
}
.topnav a:hover { opacity: 1; color: var(--amber); }

/* ---------- Каркас ---------- */
.layout {
  display: flex;
  min-height: calc(100vh - 140px);
  max-width: 1400px;
  margin: 0 auto;
}
.sidebar {
  width: 240px;
  background: var(--bg-soft);
  border-right: 1px solid var(--line);
  padding: 2rem 1.2rem;
}
.content {
  flex: 1;
  padding: 2.2rem 2.5rem;
}
.footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
  font-size: .85rem;
  border-top: 1px solid var(--line);
  background: rgba(255,255,255,.4);
}
.footer a { color: var(--sage); }

/* ---------- Профиль в сайдбаре ---------- */
.profile-mini {
  text-align: center;
  margin-bottom: 1.8rem;
}
.avatar {
  width: 66px; height: 66px;
  border-radius: 50%;
  background: var(--amber);
  color: #fff;
  font-family: 'Playfair Display', serif;
  font-size: 1.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto .6rem;
  box-shadow: 0 3px 10px rgba(212,162,76,.35);
}
.who {
  font-weight: 600;
  color: var(--sage);
  word-break: break-word;
}
.city {
  font-size: .82rem;
  color: var(--muted);
}
.side-nav a {
  display: block;
  padding: .7rem 1rem;
  border-radius: 10px;
  color: var(--sage);
  margin-bottom: .25rem;
  font-size: .95rem;
  transition: background .2s, color .2s;
}
.side-nav a:hover {
  background: var(--amber);
  color: #fff;
}

/* ---------- Заголовки ---------- */
h1 {
  font-family: 'Playfair Display', serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--sage);
  margin-bottom: 1.5rem;
  letter-spacing: -.01em;
}
h2 {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  color: var(--sage);
  margin: 2rem 0 1rem;
}
h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  color: var(--sage);
  margin: 1rem 0 .5rem;
}

.hero { padding: 1rem 0 1.5rem; }
.hero p {
  color: var(--muted);
  max-width: 620px;
  border-left: 4px solid var(--amber);
  padding-left: 1.2rem;
}

/* ---------- Полка с корешками ---------- */
.shelf {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: flex-end;
  padding: 2rem 1rem 0;
  margin: 2rem 0;
  border-bottom: 6px solid #C9B79A;
  background: linear-gradient(180deg, transparent 70%, #E6DBC4 100%);
  border-radius: 0 0 8px 8px;
}
.book-spine {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 120px;
  height: 260px;
  padding: .8rem .7rem;
  border-radius: 4px 10px 10px 4px;
  color: #fff;
  text-decoration: none;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: 'Playfair Display', serif;
  box-shadow: 3px 3px 0 rgba(0,0,0,.15);
  transition: transform .25s ease, box-shadow .25s ease;
}
.book-spine[data-color="0"] { background: linear-gradient(160deg, #B85C38, #7A3520); }
.book-spine[data-color="1"] { background: linear-gradient(160deg, #2F4F4A, #182F2C); }
.book-spine[data-color="2"] { background: linear-gradient(160deg, #D4A24C, #8A6420); }
.book-spine[data-color="3"] { background: linear-gradient(160deg, #6B4E71, #3B2840); }
.book-spine[data-color="4"] { background: linear-gradient(160deg, #3E6B52, #203A2C); }
.book-spine[data-color="5"] { background: linear-gradient(160deg, #8E3B46, #4E1C23); }

.book-spine:hover {
  transform: rotate(-3deg) translateY(-6px);
  box-shadow: 6px 8px 0 rgba(0,0,0,.2);
  color: #fff;
}
.book-spine .title { font-size: .95rem; font-weight: 700; }
.book-spine .author,
.book-spine .owner { font-size: .72rem; opacity: .85; }

.empty, .muted { color: var(--muted); font-style: italic; padding: 1rem 0; }

/* ---------- Формы ---------- */
.card,
.book-form,
.auth-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 2rem;
  box-shadow: var(--shadow);
}
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
  background:
    radial-gradient(circle at 30% 20%, #F5EFE6, #E6DBC4);
}
.auth-card {
  width: 400px;
  max-width: 100%;
  text-align: center;
}
.auth-card h1 {
  font-size: 1.6rem;
  margin-bottom: .4rem;
}
.auth-card .hint {
  color: var(--muted);
  font-size: .9rem;
  margin-bottom: 1rem;
}
.auth-card .hint a { color: var(--sage); font-weight: 500; }
.auth-card input {
  width: 100%;
  padding: .9rem 1rem;
  margin: .5rem 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #FBF8F2;
  color: var(--ink);
  font-family: inherit;
  font-size: 1rem;
}
.auth-card input:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(212,162,76,.25);
}
.code-input {
  letter-spacing: .5rem;
  text-align: center;
  font-size: 1.6rem;
  font-weight: 700;
}
.error {
  color: #8A2A1A;
  background: #F2D2CB;
  border-radius: 8px;
  padding: .6rem;
  margin-bottom: .8rem;
  font-size: .9rem;
}
.ok {
  color: #256B3E;
  background: #D7EAD9;
  border-radius: 8px;
  padding: .6rem;
  margin-bottom: .8rem;
}

fieldset {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.2rem;
  margin-bottom: 1.2rem;
}
legend {
  padding: 0 .6rem;
  color: var(--sage);
  font-weight: 600;
  font-family: 'Playfair Display', serif;
}
label {
  display: block;
  margin-bottom: .8rem;
  font-size: .9rem;
  color: var(--sage);
}
label input,
label textarea,
label select {
  display: block;
  width: 100%;
  margin-top: .35rem;
  padding: .7rem .9rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #FBF8F2;
  color: var(--ink);
  font-family: inherit;
  font-size: .95rem;
}
label input:focus,
label textarea:focus,
label select:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(212,162,76,.25);
}
label.check {
  display: flex;
  align-items: center;
  gap: .5rem;
}
label.check input { width: auto; margin: 0; }

/* ---------- Кнопки ---------- */
.btn-amber {
  background: var(--amber);
  color: #fff;
  border: none;
  padding: .8rem 1.6rem;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  font-size: .95rem;
  transition: background .2s, transform .1s;
  box-shadow: 0 3px 10px rgba(212,162,76,.3);
}
.btn-amber:hover {
  background: var(--amber-dk);
  transform: translateY(-1px);
}
.btn-mini {
  padding: .4rem .7rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
  font-size: .9rem;
  font-family: inherit;
}
.btn-mini.danger {
  color: var(--terra);
  border-color: var(--terra);
}

/* ---------- Таблицы ---------- */
.books-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.books-table th,
.books-table td {
  padding: .85rem .7rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
  font-size: .92rem;
}
.books-table th {
  background: var(--bg-soft);
  color: var(--sage);
  font-weight: 600;
  text-transform: uppercase;
  font-size: .72rem;
  letter-spacing: .05em;
}
.books-table tr:last-child td { border-bottom: none; }
.books-table tr:hover td { background: #FBF8F2; }

.cover-mini {
  width: 44px;
  height: 60px;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 2px 3px 0 rgba(0,0,0,.15);
}
.cover-mini.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
  color: var(--amber);
  font-size: 1.4rem;
}

/* ---------- Бейджи ---------- */
.badge {
  padding: .2rem .6rem;
  border-radius: 20px;
  font-size: .75rem;
  display: inline-block;
}
.badge.ok   { background: #D7EAD9; color: #256B3E; }
.badge.warn { background: #F4E4BE; color: #8A6420; }
.badge.bad  { background: #F2D2CB; color: #8A2A1A; }

/* ---------- Карточка книги ---------- */
.book-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--shadow);
}
.book-card .cover img,
.book-card .cover .placeholder {
  width: 100%;
  border-radius: 8px;
  box-shadow: 4px 6px 0 rgba(0,0,0,.15);
}
.book-card .cover .placeholder {
  aspect-ratio: 2/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  background: var(--bg-soft);
  color: var(--amber);
}
.book-card .authors {
  color: var(--muted);
  margin-bottom: 1rem;
  font-style: italic;
}
.book-card .details {
  list-style: none;
  margin-bottom: 1rem;
}
.book-card .details li {
  padding: .25rem 0;
  font-size: .9rem;
  color: var(--muted);
  border-bottom: 1px dashed var(--line);
}
.book-card section { margin-top: 1.2rem; }
.book-card section p { color: var(--ink); }

.private {
  border: 1px dashed var(--sage);
  background: rgba(47,79,74,.05);
  padding: 1rem;
  border-radius: 10px;
  margin-top: 1.2rem;
}

.chip {
  display: inline-block;
  padding: .5rem 1rem;
  background: var(--bg-soft);
  color: var(--sage);
  border: 1px solid var(--line);
  border-radius: 20px;
  margin: .3rem .4rem .3rem 0;
  font-size: .85rem;
}
.chip:hover {
  background: var(--amber);
  color: #fff;
  border-color: var(--amber);
}

.want-form {
  margin-top: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}
.want-form textarea {
  width: 100%;
  padding: .8rem;
  margin: .6rem 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #FBF8F2;
  color: var(--ink);
  font-family: inherit;
}
.want-form textarea:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(212,162,76,.25);
}

/* ---------- Поиск ---------- */
.search {
  display: flex;
  gap: .8rem;
  margin-bottom: 1.5rem;
  max-width: 600px;
}
.search input {
  flex: 1;
  padding: .8rem 1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font-family: inherit;
}
.search input:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(212,162,76,.25);
}

/* ---------- Запросы обмена ---------- */
.req {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--terra);
  border-radius: 10px;
  padding: 1.2rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}
.req p { color: var(--muted); margin: .5rem 0; }
.req .status {
  font-size: .8rem;
  color: var(--terra);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin: .5rem 0;
  font-weight: 600;
}
.req form { margin-top: .8rem; }
.req textarea {
  width: 100%;
  padding: .6rem;
  margin-bottom: .6rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #FBF8F2;
  color: var(--ink);
  font-family: inherit;
}

/* ---------- Адаптив ---------- */
@media (max-width: 800px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; border-right: 0; border-bottom: 1px solid var(--line); }
  .book-card { grid-template-columns: 1fr; }
  .topnav a { margin-left: .8rem; font-size: .85rem; }
  .content { padding: 1.5rem 1rem; }
  h1 { font-size: 1.7rem; }
  .shelf { padding: 1.5rem .5rem 0; }
  .book-spine { width: 100px; height: 220px; }
}