/* ===================================
   Reference & Report Organizer - Styles
   =================================== */

:root {
  --accent: #2c4a6e;
  --accent-hover: #1c3350;
  --accent-tint: #eaf0f6;
  --serif: Georgia, 'Times New Roman', Times, serif;
}

body {
  font-family: sans-serif;
  margin: 0;
  padding: 40px 20px;
  background-color: #f5f5f5;
  color: #333;
}

header, main {
  max-width: 720px;
  margin: 0 auto;
}

header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--accent);
}

header h1 {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: normal;
  letter-spacing: 0.3px;
  color: var(--accent);
  margin-bottom: 6px;
}

header p {
  font-family: var(--serif);
  font-style: italic;
  color: #666;
  margin: 0;
}

h2 {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: normal;
  color: var(--accent);
  margin-bottom: 16px;
}

h3 {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: normal;
  color: var(--accent);
  margin: 0 0 16px;
}

/* ===========================
   Tabs
   =========================== */

.tab-nav {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.tab-btn {
  background-color: #fff;
  border: 1px solid #ccc;
  padding: 10px 18px;
  font-size: 14px;
  border-radius: 20px;
  cursor: pointer;
  color: #555;
}

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

.tab-btn.active {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.view {
  margin-bottom: 40px;
}

/* ===========================
   Forms (shared)
   =========================== */

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: bold;
  margin-bottom: 2px;
}

.form-group small {
  display: block;
  color: #888;
  font-size: 13px;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
  box-sizing: border-box;
  background-color: #fff;
  font-family: inherit;
}

.form-group textarea {
  height: 70px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(44,74,110,0.15);
}

.search-group input {
  padding: 12px 16px;
  font-size: 16px;
}

.search-group input:focus {
  box-shadow: 0 0 0 3px rgba(44,74,110,0.15);
}

.inline-form {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.inline-form .form-group {
  flex: 1;
  margin-bottom: 0;
}

button {
  font-family: inherit;
}

button[type="submit"],
.inline-form button {
  background-color: var(--accent);
  color: #fff;
  border: none;
  padding: 12px 24px;
  font-size: 15px;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
}

button[type="submit"]:hover,
.inline-form button:hover {
  background-color: var(--accent-hover);
}

.secondary-btn {
  background-color: #fff;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 10px 20px;
  font-size: 14px;
  border-radius: 6px;
  cursor: pointer;
}

.secondary-btn:hover {
  background-color: var(--accent-tint);
}

.small-btn {
  padding: 6px 14px;
  font-size: 13px;
}

.form-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

#refForm {
  background: #fff;
  border-radius: 8px;
  padding: 24px;
  margin: 16px 0 24px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.status-msg {
  font-size: 13px;
  color: #27ae60;
  min-height: 18px;
  margin: 8px 0 0;
}

.status-msg.error {
  color: #e74c3c;
}

/* ===========================
   Quotes (inside reference form)
   =========================== */

.quote-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  align-items: flex-start;
  padding-bottom: 12px;
  border-bottom: 1px solid #f0f0f0;
}

.quote-row-fields {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.quote-row textarea {
  height: 50px;
}

.quote-source-input {
  font-size: 16px;
  padding: 6px 10px;
}

.quote-remove-btn {
  background: none;
  border: none;
  color: #bbb;
  font-size: 14px;
  cursor: pointer;
  padding: 8px;
  border-radius: 4px;
  flex-shrink: 0;
}

.quote-remove-btn:hover {
  background-color: #fff0f0;
  color: #e74c3c;
}

.empty-quotes-hint {
  color: #aaa;
  font-size: 13px;
  font-style: italic;
  margin: 0 0 8px;
}

/* ===========================
   Paper checkboxes
   =========================== */

.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.checkbox-list label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: normal;
  cursor: pointer;
}

.checkbox-list input[type="checkbox"] {
  width: auto;
}

.muted-hint {
  color: #aaa;
  font-size: 13px;
  font-style: italic;
}

/* ===========================
   Papers list
   =========================== */

.paper-item {
  background: #fff;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.paper-select-btn {
  background: none;
  border: none;
  text-align: left;
  flex: 1;
  min-width: 0;
  font-family: var(--serif);
  font-size: 17px;
  color: #333;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
}

.paper-select-btn:hover {
  background-color: var(--accent-tint);
}

.paper-item.selected .paper-select-btn {
  color: var(--accent);
  background-color: var(--accent-tint);
}

.paper-ref-count {
  font-size: 12px;
  font-family: sans-serif;
  color: #888;
  font-weight: normal;
  margin-left: 8px;
}

.delete-btn {
  background: none;
  border: none;
  color: #bbb;
  font-size: 13px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 4px;
  flex-shrink: 0;
}

.delete-btn:hover {
  background-color: #fff0f0;
  color: #e74c3c;
}

/* ===========================
   Reference cards
   =========================== */

.ref-card {
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.ref-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 8px;
}

.ref-title {
  font-family: var(--serif);
  font-size: 19px;
  color: #2a2a2a;
  text-decoration: none;
}

.ref-title:hover {
  text-decoration: underline;
}

.ref-authors {
  color: #666;
  margin: 0 0 8px;
}

.ref-card-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.ref-card-actions button {
  background: none;
  border: 1px solid #ccc;
  color: #555;
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
}

.ref-card-actions button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.card-label {
  font-size: 12px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #888;
  margin: 12px 0 2px;
}

.card-text {
  margin: 0;
  line-height: 1.5;
  white-space: pre-wrap;
}

.quote-block {
  margin: 4px 0 0;
  padding-left: 20px;
}

.quote-block li {
  line-height: 1.5;
  margin-bottom: 8px;
}

.quote-source {
  display: block;
  color: #888;
  font-size: 12px;
  font-style: italic;
  margin-top: 2px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.paper-chip {
  display: inline-block;
  background-color: var(--accent-tint);
  color: var(--accent);
  font-size: 12px;
  font-weight: bold;
  padding: 3px 10px;
  border-radius: 12px;
}

/* Empty state */
.empty-message {
  text-align: center;
  color: #aaa;
  padding: 40px 0;
  margin: 0;
}

/* ===========================
   Data section
   =========================== */

#data-section {
  background: #fff;
  border-radius: 8px;
  padding: 20px 24px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

#data-section p {
  color: #666;
}

/* ===========================
   Responsive
   =========================== */

@media (max-width: 600px) {
  .inline-form {
    flex-direction: column;
    align-items: stretch;
  }

  .paper-item {
    flex-wrap: wrap;
  }
}