/* ─── Overlay de càrrega ──────────────────────────────────── */

#loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  z-index: 100;
  font-size: 1rem;
  color: #1a3a5c;
  font-weight: 600;
}

#loading-overlay[hidden] { display: none; }

.spinner {
  width: 2.5rem;
  height: 2.5rem;
  border: 3px solid #e0e0e0;
  border-top-color: #1a3a5c;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

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

body {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  color: #222;
  background: #f5f5f3;
  min-height: 100vh;
}

.container {
  max-width: 560px;
  margin: 60px auto;
  padding: 0 1.25rem;
}

header {
  margin-bottom: 2rem;
}

h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #1a3a5c;
}

.subtitle {
  font-size: 0.9rem;
  color: #666;
  margin-top: 0.25rem;
}

/* Errors flash */
.errors {
  list-style: none;
  background: #fff8e1;
  border: 1px solid #f0c040;
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: #5a4000;
}

.errors li + li {
  margin-top: 0.4rem;
}

/* Formulari */
form {
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field--narrow {
  max-width: 180px;
}

label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #444;
}

.optional {
  font-weight: 400;
  color: #999;
  font-size: 0.8rem;
}

input[type="text"],
input[type="file"] {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 0.9rem;
  font-family: inherit;
  color: #222;
  background: #fafafa;
  transition: border-color 0.15s;
}

input[type="text"]:focus,
input[type="file"]:focus {
  outline: none;
  border-color: #1a3a5c;
  background: #fff;
}

input[type="file"] {
  padding: 0.4rem 0.5rem;
  cursor: pointer;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

button[type="submit"] {
  align-self: flex-end;
  background: #1a3a5c;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 0.65rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s;
}

button[type="submit"]:hover {
  background: #14304e;
}

button[type="submit"]:active {
  background: #0f2540;
}

/* ─── Pàgina de resultats ─────────────────────────────────── */

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
  gap: 1rem;
}

.result-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.result-meta strong {
  color: #1a3a5c;
}

.tag {
  background: #e8f0f8;
  color: #1a3a5c;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-weight: 600;
}

.tag-doi {
  background: #f0f0f0;
  color: #555;
}

.result-date {
  font-size: 0.8rem;
  color: #999;
  white-space: nowrap;
}

.downloads {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 0.6rem 1.25rem;
  border-radius: 5px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s;
}

.btn-primary {
  background: #1a3a5c;
  color: #fff;
}

.btn-primary:hover { background: #14304e; }

.btn-secondary {
  background: #fff;
  color: #1a3a5c;
  border: 1px solid #1a3a5c;
}

.btn-secondary:hover { background: #f0f4f8; }

.report-blocks {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.report-block {
  border-radius: 7px;
  padding: 1.1rem 1.25rem;
  border: 1px solid transparent;
}

.report-block h2 {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.report-block ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.report-block li {
  font-size: 0.88rem;
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
}

.report-block .icon {
  font-style: normal;
  font-weight: 700;
  flex-shrink: 0;
  width: 1rem;
  text-align: center;
}

.report-block .empty {
  color: #aaa;
  font-style: italic;
}

.block-ok {
  background: #f0faf4;
  border-color: #b2dfc2;
}

.block-ok h2    { color: #276840; }
.block-ok .icon { color: #276840; }

.block-warn {
  background: #fffbf0;
  border-color: #f0d080;
}

.block-warn h2    { color: #7a5000; }
.block-warn .icon { color: #c07000; }

.block-pending {
  background: #f5f5f5;
  border-color: #ddd;
}

.block-pending h2    { color: #555; }
.block-pending .icon { color: #aaa; }

.back-link {
  margin-top: 1.75rem;
  text-align: center;
}

.back-link a {
  color: #1a3a5c;
  font-size: 0.875rem;
  text-decoration: none;
}

.back-link a:hover { text-decoration: underline; }

/* ─── Autors dinàmics ─────────────────────────────────────── */

#autors-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.autor-pair {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.autor-pair__fields {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.btn-remove-autor {
  flex-shrink: 0;
  width: 1.75rem;
  height: 1.75rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: #fff;
  color: #888;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s, color 0.15s;
  align-self: flex-start;
  margin-top: 0.55rem;
}

.btn-remove-autor:hover {
  border-color: #c00;
  color: #c00;
}

#btn-add-autor {
  align-self: flex-start;
  background: none;
  border: 1px solid #1a3a5c;
  color: #1a3a5c;
  border-radius: 4px;
  padding: 0.3rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  margin-top: 0.25rem;
  transition: background 0.15s;
}

#btn-add-autor:hover {
  background: #f0f4f8;
}