:root {
  --green: #1a6b3c;
  --green-mid: #2d8c54;
  --green-light: #e8f5ee;
  --gold: #c8952a;
  --gold-light: #fdf3e3;
  --ink: #1a1a1a;
  --ink-mid: #4a4a4a;
  --ink-light: #8a8a8a;
  --paper: #fafaf8;
  --white: #ffffff;
  --rule: #e0ddd8;
  --danger: #c0392b;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
}

/* ─── HEADER ─── */
.header {
  background: var(--green);
  color: white;
  padding: 0;
  position: relative;
  overflow: hidden;
}
.header::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 280px; height: 280px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.header::after {
  content: '';
  position: absolute;
  bottom: -40px; left: 20%;
  width: 180px; height: 180px;
  border-radius: 50%;
  background: rgba(200,149,42,0.15);
}
.header-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 36px 24px 32px;
  position: relative;
  z-index: 1;
}
.header-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(200,149,42,0.25);
  border: 1px solid rgba(200,149,42,0.5);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #f5d78e;
  margin-bottom: 14px;
}
.header h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 10px;
}
.header h1 span { color: #f5d78e; }
.header p {
  font-size: 0.95rem;
  opacity: 0.8;
  max-width: 500px;
}

/* ─── STYLE SELECTOR STRIP ─── */
.style-strip {
  background: var(--ink);
  border-bottom: 3px solid var(--gold);
}
.style-strip-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.style-strip-inner::-webkit-scrollbar { display: none; }
.style-btn {
  flex-shrink: 0;
  padding: 14px 20px;
  background: none;
  border: none;
  color: rgba(255,255,255,0.5);
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -3px;
  transition: all 0.2s;
  white-space: nowrap;
}
.style-btn:hover { color: rgba(255,255,255,0.85); }
.style-btn.active {
  color: #f5d78e;
  border-bottom-color: var(--gold);
  font-weight: 600;
}
.style-btn .style-abbr {
  display: block;
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.05em;
  opacity: 0.6;
  margin-top: 1px;
}
.style-btn.active .style-abbr { opacity: 1; color: rgba(245,215,142,0.7); }

/* ─── MAIN ─── */
.main {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 24px 60px;
}

/* ─── STYLE INFO CARD ─── */
.style-info {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--green-light);
  border: 1px solid #b8dfc6;
  border-left: 4px solid var(--green);
  border-radius: 8px;
  padding: 16px 18px;
  margin-bottom: 28px;
  animation: slideIn 0.3s ease;
}
.style-info-icon {
  font-size: 22px;
  flex-shrink: 0;
  margin-top: 1px;
}
.style-info strong {
  display: block;
  color: var(--green);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 3px;
}
.style-info p {
  font-size: 12.5px;
  color: #3a6b4a;
  line-height: 1.5;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── SOURCE TYPE TABS ─── */
.source-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.source-tab {
  padding: 8px 16px;
  border: 1.5px solid var(--rule);
  border-radius: 6px;
  background: var(--white);
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-mid);
  cursor: pointer;
  transition: all 0.18s;
  display: flex;
  align-items: center;
  gap: 6px;
}
.source-tab:hover { border-color: var(--green-mid); color: var(--green); }
.source-tab.active {
  background: var(--ink);
  color: white;
  border-color: var(--ink);
}

/* ─── CARD ─── */
.card {
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 28px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.card-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-title .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
}

/* ─── FORM ─── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
}
.field-full { grid-column: 1 / -1; }

.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-mid);
  margin-bottom: 6px;
}
.field label .req { color: var(--danger); }

.field input, .field select, .field textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--rule);
  border-radius: 6px;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  color: var(--ink);
  background: var(--paper);
  transition: border-color 0.18s, box-shadow 0.18s;
  -webkit-appearance: none;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--green-mid);
  background: white;
  box-shadow: 0 0 0 3px rgba(45,140,84,0.12);
}
.field input.err { border-color: var(--danger); }
.field .err-msg { font-size: 11px; color: var(--danger); margin-top: 4px; }
.field textarea { resize: vertical; min-height: 60px; }
.field select { cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234a4a4a' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 32px; }

/* ─── AUTHORS ─── */
.authors-wrap { grid-column: 1 / -1; }
.author-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 8px;
}
.author-row input { flex: 1; }
.rm-btn {
  width: 28px; height: 28px;
  border: none;
  background: #fde8e6;
  color: var(--danger);
  border-radius: 50%;
  cursor: pointer;
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s;
  line-height: 1;
}
.rm-btn:hover { background: #f9c6c2; }
.add-author-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1.5px dashed var(--rule);
  border-radius: 6px;
  background: none;
  color: var(--ink-light);
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  cursor: pointer;
  margin-top: 4px;
  transition: all 0.18s;
}
.add-author-btn:hover { border-color: var(--green-mid); color: var(--green); }

/* ─── LEGAL SOURCES SPECIAL ─── */
.oscola-note {
  background: #fff8e6;
  border: 1px solid #f0d080;
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 12.5px;
  color: #7a5c00;
  margin-bottom: 16px;
  grid-column: 1 / -1;
}
.oscola-note strong { font-weight: 600; }

/* ─── GENERATE BUTTON ─── */
.gen-btn {
  width: 100%;
  padding: 14px;
  margin-top: 22px;
  background: var(--green);
  color: white;
  border: none;
  border-radius: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  letter-spacing: 0.02em;
}
.gen-btn:hover { background: #155a32; box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.gen-btn:active { transform: translateY(0); }

/* ─── OUTPUT ─── */
.output-card {
  background: var(--ink);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.output-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  display: flex;
  align-items: center;
  gap: 6px;
}
.output-label .dot { width: 6px; height: 6px; border-radius: 50%; background: #4ade80; }
.copy-btn {
  padding: 6px 14px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 5px;
  color: rgba(255,255,255,0.7);
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.18s;
  display: flex;
  align-items: center;
  gap: 5px;
}
.copy-btn:hover { background: rgba(255,255,255,0.15); color: white; }
.copy-btn.copied { background: rgba(74,222,128,0.15); color: #4ade80; border-color: rgba(74,222,128,0.3); }
.output-body {
  padding: 22px 22px 24px;
  font-family: 'DM Mono', monospace;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(255,255,255,0.88);
  min-height: 80px;
}
.output-body em { font-style: italic; color: #f5d78e; }
.output-body.empty { color: rgba(255,255,255,0.25); font-style: italic; font-family: 'DM Sans', sans-serif; }

/* ─── FOOTER NOTE ─── */
.footer-note {
  margin-top: 32px;
  padding: 20px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--gold-light);
}
.footer-note h3 {
  font-family: 'Playfair Display', serif;
  font-size: 15px;
  color: #7a5c00;
  margin-bottom: 8px;
}
.footer-note p {
  font-size: 12.5px;
  color: #8a6820;
  line-height: 1.6;
}
.footer-note strong { color: #6a4c00; }

footer {
  text-align: center;
  padding: 24px;
  font-size: 12px;
  color: var(--ink-light);
  border-top: 1px solid var(--rule);
  margin-top: 20px;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 600px) {
  .form-grid { grid-template-columns: 1fr; }
  .field-full { grid-column: 1; }
  .authors-wrap { grid-column: 1; }
  .header-inner { padding: 24px 16px 20px; }
  .main { padding: 20px 16px 40px; }
  .card { padding: 18px; }
  .style-btn { padding: 12px 14px; }
}