:root {
  --bg: #0d1117;
  --bg-soft: #161b22;
  --bg-card: #161b22;
  --border: #232a33;
  --text: #e6edf3;
  --text-dim: #9aa7b4;
  --accent: #6ea8fe;
  --star: #e3b341;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --sans: "Inter", system-ui, -apple-system, sans-serif;
  --radius: 14px;
  --maxw: 1000px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: var(--sans); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }

.head { border-bottom: 1px solid var(--border); }
.head__inner { max-width: var(--maxw); margin: 0 auto; padding: 3.5rem clamp(1rem, 4vw, 2.5rem) 2.5rem; }
.head__eyebrow { font-family: var(--mono); color: var(--accent); font-size: .85rem; letter-spacing: .04em; }
.head__title { font-size: clamp(2rem, 6vw, 3rem); line-height: 1.05; letter-spacing: -.02em; margin: .5rem 0; }
.head__sub { color: var(--text-dim); margin-bottom: 1.5rem; }

.btn {
  display: inline-block; padding: .6rem 1.2rem; border-radius: 10px; cursor: pointer;
  font-weight: 600; font-size: .92rem; font-family: var(--sans);
  background: var(--bg-soft); border: 1px solid var(--border); color: var(--text);
  transition: transform .15s, border-color .15s;
}
.btn:hover { transform: translateY(-2px); border-color: var(--accent); }
.btn--primary { background: var(--accent); color: #0a0e14; border-color: var(--accent); }

/* Form */
.form-wrap { max-width: var(--maxw); margin: 0 auto; padding: 2rem clamp(1rem, 4vw, 2.5rem) 0; }
.form { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; display: flex; flex-direction: column; gap: 1rem; }
.form__top { display: grid; grid-template-columns: 1fr 130px; gap: 1.25rem; align-items: start; }
.form__fields { display: flex; flex-direction: column; gap: 1rem; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* Live cover preview */
.cover-preview { width: 130px; height: 195px; border-radius: 8px; border: 1px dashed var(--border); background: var(--bg); display: flex; align-items: center; justify-content: center; overflow: hidden; position: relative; }
.cover-preview img { width: 100%; height: 100%; object-fit: cover; display: none; }
.cover-preview[data-state="found"] { border-style: solid; }
.cover-preview[data-state="found"] img { display: block; }
.cover-preview[data-state="found"] .cover-preview__label { display: none; }
.cover-preview__label { font-family: var(--mono); font-size: .72rem; color: var(--text-dim); text-align: center; padding: .5rem; }
.cover-preview[data-state="loading"] .cover-preview__label::after { content: "…"; }
@media (max-width: 560px) { .form__top { grid-template-columns: 1fr; } .cover-preview { width: 110px; height: 165px; } }
.form label { display: flex; flex-direction: column; gap: .35rem; font-size: .85rem; color: var(--text-dim); }
.form input, .form select, .form textarea {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: .6rem .7rem;
  color: var(--text); font-family: var(--sans); font-size: .95rem; resize: vertical;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent); }
.form__actions { display: flex; align-items: center; justify-content: flex-end; gap: 1rem; }
.form__msg { font-size: .88rem; color: var(--text-dim); margin-right: auto; }
.form__msg.error { color: #f0726f; }
.form__msg.ok { color: #5fd08a; }
@media (max-width: 560px) { .form .row { grid-template-columns: 1fr; } }

/* Grid of books */
.grid { max-width: var(--maxw); margin: 0 auto; padding: 2rem clamp(1rem, 4vw, 2.5rem) 3rem; display: flex; flex-direction: column; gap: 1.25rem; }
.empty { color: var(--text-dim); text-align: center; padding: 3rem 0; }

.book { display: grid; grid-template-columns: 110px 1fr; gap: 1.25rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; }
.book__cover { width: 110px; height: 165px; border-radius: 8px; object-fit: cover; background: var(--bg-soft); border: 1px solid var(--border); }
.book__cover--ph { display: flex; align-items: center; justify-content: center; text-align: center; padding: .5rem; font-size: .8rem; color: var(--text-dim); font-family: var(--mono); }
.book__body { display: flex; flex-direction: column; gap: .4rem; }
.book__title { font-size: 1.2rem; font-weight: 600; }
.book__author { color: var(--text-dim); font-size: .92rem; }
.book__rating { color: var(--star); font-size: 1rem; letter-spacing: .1em; }
.book__analysis { color: var(--text-dim); font-size: .95rem; margin-top: .25rem; white-space: pre-wrap; }
.book__foot { display: flex; gap: 1rem; align-items: center; margin-top: .25rem; }
.book__date { font-family: var(--mono); font-size: .75rem; color: var(--text-dim); }
.book__del { font-family: var(--mono); font-size: .75rem; color: var(--text-dim); background: none; border: none; cursor: pointer; }
.book__del:hover { color: #f0726f; }
@media (max-width: 560px) { .book { grid-template-columns: 80px 1fr; } .book__cover { width: 80px; height: 120px; } }

.foot { text-align: center; padding: 2.5rem 1rem; color: var(--text-dim); font-family: var(--mono); font-size: .8rem; border-top: 1px solid var(--border); }