:root {
  --bg: #050816;
  --bg-elevated: #0b1220;
  --accent: #22c55e;
  --accent-soft: rgba(34, 197, 94, 0.18);
  --accent-glow: 0 0 18px rgba(34, 197, 94, 0.45);
  --accent-text: #e5ffef;
  --border-subtle: rgba(148, 163, 253, 0.15);
  --text-main: #f9fafb;
  --text-soft: #9ca3af;
  --radius-xl: 22px;
  --transition-fast: 0.18s ease-out;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

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

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(34, 197, 94, 0.06), transparent),
    radial-gradient(circle at top right, rgba(56, 189, 248, 0.04), transparent),
    #020817;
  color: var(--text-main);
  font-family: var(--font-sans);
}

/* Layout */

.app-root { display: flex; justify-content: center; padding: 18px; }
.shell { width: 100%; max-width: 1440px; }
.layout { display: grid; grid-template-columns: 260px 1fr; gap: 16px; }

/* Sidebar */

.sidebar {
  background: linear-gradient(to bottom, rgba(15,23,42,0.98), rgba(2,6,23,0.98));
  border-radius: 20px;
  padding: 14px;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 18px 40px rgba(15,23,42,0.8);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-header { display: flex; flex-direction: column; gap: 10px; }

.sidebar-brand { display: flex; flex-direction: column; gap: 6px; }

.brand-logo {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 0, #22c55e, #111827);
  box-shadow: 0 0 14px rgba(34,197,94,0.9);
}

.brand-title {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

/* NEW: sidebar heading text “EBM Session” */
.sidebar-title {
  text-align: center;
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  margin-bottom: 4px;
}

.topic-search {
  width: 100%;
  padding: 9px 11px;
  border-radius: 999px;
  border: 1px solid rgba(148,163,253,0.25);
  background: rgba(9,9,18,0.96);
  color: var(--text-main);
  font-size: 13px;
  outline: none;
  transition: all var(--transition-fast);
}
.topic-search::placeholder { color: var(--text-soft); }
.topic-search:focus { border-color: var(--accent); box-shadow: var(--accent-glow); }

.conversation-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.conv-empty {
  font-size: 11px;
  color: var(--text-soft);
  padding: 4px;
}

.conversation-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10,16,30,0.98);
  padding: 7px 9px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.conversation-item:hover {
  border-color: rgba(34,197,94,0.6);
  box-shadow: 0 0 12px rgba(34,197,94,0.25);
  transform: translateY(-1px);
}

.conv-main {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.conv-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Delete button */

.conv-delete {
  border: none;
  background: rgba(15,23,42,0.98);
  color: rgba(148,163,253,0.85);
  font-size: 11px;
  width: 16px;
  height: 16px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0.0;
  transition: all 0.2s ease;
  box-shadow: none;
}

.conversation-item:hover .conv-delete { opacity: 1; }

.conv-delete:hover {
  background: rgba(239,68,68,0.14);
  color: #f97316;
  box-shadow: 0 0 8px rgba(239,68,68,0.4);
}

/* Sidebar footer */

.sidebar-footer {
  font-size: 9px;
  color: var(--text-soft);
}

/* Main region */

.main-region {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.header {
  text-align: center;
  padding-top: 4px;
}

.title {
  margin: 0;
  font-size: 30px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-text);
  text-shadow: 0 0 16px rgba(34,197,94,0.35);
}

.subtitle {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--text-soft);
}

.grid {
  display: grid;
  grid-template-columns: minmax(0,1.1fr) minmax(0,1.6fr);
  gap: 14px;
}

/* Cards */

.card {
  background: radial-gradient(circle at top left, rgba(34,197,94,0.06), transparent),
              rgba(6,8,20,0.98);
  border-radius: var(--radius-xl);
  padding: 14px;
  border: 1px solid rgba(148,163,253,0.14);
  box-shadow: 0 14px 36px rgba(15,23,42,0.9);
  backdrop-filter: blur(16px);
}

/* ---------- UNIFIED CARD HEADINGS ---------- */

.label,
.output-title,
.sidebar-title {
  display: block;
  width: 100%;
  text-align: center;
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  margin: 0 0 10px;
}

/* Input */

.textarea {
  width: 100%;
  min-height: 140px;
  padding: 11px 12px;
  border-radius: 16px;
  border: 1px solid rgba(148,163,253,0.25);
  background: rgba(4,7,18,0.98);
  color: var(--text-main);
  font-size: 14px;
  line-height: 1.5;
  resize: vertical;
  outline: none;
  box-shadow: inset 0 0 8px rgba(15,23,42,0.6);
  transition: all var(--transition-fast);
}
.textarea:focus {
  border-color: var(--accent);
  box-shadow: var(--accent-glow);
}

/* Generate button */

.actions { display: flex; justify-content: flex-end; margin-top: 4px; }

.btn {
  padding: 9px 22px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(90deg,#22c55e,#4ade80);
  color: #020817;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  box-shadow: 0 0 18px rgba(34,197,94,0.6);
  transition: all 0.25s ease;
}
.btn:hover { transform: translateY(-2px) scale(1.02); box-shadow: 0 0 24px rgba(34,197,94,0.85); }
.btn:disabled { opacity: 0.5; box-shadow: none; cursor: default; }

/* ---------- OUTPUT HEADER (ANSWERS title centred with Copy All) ---------- */

.output-header {
  position: relative;
  margin-bottom: 6px;
  min-height: 24px;
}

.output-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.copy-btn {
  position: absolute;
  right: 0;
  top: 0;
  padding: 5px 13px;
  font-size: 12px;
  border-radius: 999px;
  border: 1px solid rgba(34,197,94,0.4);
  background: rgba(15,23,42,0.96);
  color: var(--accent-text);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.copy-btn:hover:not(:disabled) {
  background: rgba(22,163,74,0.22);
  box-shadow: var(--accent-glow);
}
.copy-btn:disabled { opacity: 0.25; cursor: default; }
.copy-btn.copied { background: var(--accent); color: #020817; }

/* Output body */

.output-body {
  margin-top: 4px;
  padding: 9px;
  border-radius: 14px;
  background: rgba(3,7,18,0.98);
  border: 1px solid rgba(148,163,253,0.18);
  min-height: 160px;
  max-height: 520px;
  overflow-y: auto;
}

.answer {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-main);
}
.answer.placeholder { color: var(--text-soft); }

/* Sections */

.section { margin-bottom: 10px; }

.section-header.static {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3px;
}

/* Make all section headings white & consistent */
.section-header.static span,
.collapsible {
  font-size: 14px;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffffff;
}

.collapsible-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2px;
}

.collapsible {
  flex: 1;
  padding: 5px 8px;
  border-radius: 9px;
  border: none;
  background: rgba(15,23,42,0.98);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.collapsible:hover {
  background: rgba(22,163,74,0.22);
  box-shadow: var(--accent-glow);
}

.collapsible-content {
  padding: 5px 8px;
  border-radius: 9px;
  background: rgba(3,7,18,0.98);
  border: 1px solid rgba(148,163,253,0.18);
  margin-bottom: 4px;
}

/* ---------- NEON GREEN BULLETS ---------- */

.answer-bullet {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin-bottom: 6px;
}

.bullet-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--accent);
  margin-top: 6px;
  box-shadow: 0 0 12px rgba(34,197,94,0.95);
}

.bullet-text {
  font-size: 13px;
  color: var(--accent-text);
  line-height: 1.6;
}

.answer-paragraph {
  font-size: 13px;
  color: var(--text-main);
  margin: 0 0 6px;
}

/* Loader */

.answer-loader {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 3px 0 4px;
}

/* IMPORTANT: hide loader when .hidden is present */
.answer-loader.hidden {
  display: none;
}

.loader {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 2px solid rgba(148,163,253,0.25);
  border-top-color: var(--accent);
  border-right-color: var(--accent);
  animation: spin 0.8s linear infinite;
}
.loader-text {
  font-size: 11px;
  color: var(--text-soft);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
}

/* ===== CORNER LOGO (bottom-left) ===== */

.corner-logo {
  position: fixed;
  bottom: 18px;
  left: 18px;
  width: 80px;
  height: auto;
  opacity: 0.40;
  z-index: 50;
  filter: drop-shadow(0 0 10px rgba(34,197,94,0.25))
          brightness(0.85) contrast(1.2);
  transition: 0.25s ease;
}

.corner-logo:hover {
  opacity: 0.75;
  filter: drop-shadow(0 0 14px rgba(34,197,94,0.55))
          brightness(1);
}

/* ===== DISCLAIMER POPUP (original styling restored) ===== */

.disclaimer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(2, 6, 23, 0.92);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.disclaimer-box {
  width: 90%;
  max-width: 380px;
  padding: 20px;
  background: rgba(6, 8, 20, 0.96);
  border-radius: 18px;
  border: 1px solid rgba(148,163,253,0.2);
  box-shadow: 0 0 25px rgba(34,197,94,0.25);
  text-align: center;
}

.disclaimer-title {
  margin-top: 0;
  color: var(--accent-text);
  font-size: 20px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.disclaimer-text {
  color: var(--text-soft);
  font-size: 13px;
  margin: 12px 0 18px;
  line-height: 1.5;
}

.disclaimer-btn {
  padding: 8px 20px;
  font-size: 14px;
  border-radius: 999px;
  background: linear-gradient(90deg,#22c55e,#4ade80);
  border: none;
  cursor: pointer;
  color: #020817;
  font-weight: 600;
  box-shadow: 0 0 15px rgba(34,197,94,0.6);
  transition: 0.25s ease;
}

.disclaimer-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 22px rgba(34,197,94,0.8);
}