/* ═══════════════════════════════════════════════════════════════
   RESEARCHMIND — STYLESHEET
   Deep Observatory aesthetic: near-black + amber/gold + slate-blue
   Fonts: Cormorant Garamond (display) + JetBrains Mono (data/labels)
═══════════════════════════════════════════════════════════════ */

/* ── RESET & BASE ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

/* ── CSS VARIABLES ─────────────────────────────────────────── */
:root {
  /* Palette */
  --bg-base:        #08090d;
  --bg-surface:     #0d0f16;
  --bg-raised:      #131620;
  --bg-panel:       #161923;
  --bg-card:        #1b1f2c;
  --bg-card-hover:  #1f2433;

  --gold-100:       #f5dfa0;
  --gold-200:       #dfc07a;
  --gold-300:       #c9a84c;
  --gold-400:       #a8882e;
  --gold-500:       #7a6220;

  --blue-100:       #c2d4f0;
  --blue-200:       #8eaad8;
  --blue-300:       #5b82be;
  --blue-400:       #3a5f9e;
  --blue-glow:      rgba(91,130,190,0.12);

  --text-primary:   #e8e4d8;
  --text-secondary: #9a9482;
  --text-muted:     #5c5849;
  --text-accent:    var(--gold-200);

  --border-subtle:  rgba(255,255,255,0.05);
  --border-mid:     rgba(255,255,255,0.08);
  --border-gold:    rgba(201,168,76,0.25);
  --border-gold-vivid: rgba(201,168,76,0.5);

  --glow-gold:      rgba(201,168,76,0.15);
  --glow-blue:      rgba(91,130,190,0.12);

  /* Status colors */
  --status-idle:    var(--text-muted);
  --status-active:  var(--gold-300);
  --status-done:    #5bbf6e;
  --status-error:   #e05c5c;
  --status-warn:    #d4883e;

  /* Typography */
  --font-display: 'Cormorant Garamond', 'Palatino Linotype', Georgia, serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;
  --font-body:    'Libre Baskerville', Georgia, serif;

  /* Spacing */
  --gap-xs:  4px;
  --gap-sm:  8px;
  --gap-md:  16px;
  --gap-lg:  24px;
  --gap-xl:  40px;
  --gap-2xl: 64px;

  /* Radius */
  --r-sm:  4px;
  --r-md:  8px;
  --r-lg:  12px;
  --r-xl:  20px;

  /* Transitions */
  --t-fast:   150ms ease;
  --t-mid:    300ms ease;
  --t-slow:   500ms ease;

  /* Sizes */
  --nav-h:    64px;
  --sidebar-w: 340px;
}

/* ── BODY ──────────────────────────────────────────────────── */
body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ── UTILITIES ─────────────────────────────────────────────── */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}
.hidden { display: none !important; }

/* ── PAGES ─────────────────────────────────────────────────── */
.page {
  display: none;
  min-height: 100vh;
  opacity: 0;
  transition: opacity var(--t-slow);
}
.page.active {
  display: block;
  opacity: 1;
}
.page.fade-in { animation: pageFadeIn 0.6s ease forwards; }

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ════════════════════════════════════════════════════════════
   NAVIGATION
════════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(8,9,13,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--gap-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-lg);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}
.logo-mark {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--bg-base);
  background: var(--gold-300);
  padding: 3px 6px;
  border-radius: var(--r-sm);
}
.logo-text {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--gap-lg);
}
.nav-link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--t-fast);
}
.nav-link:hover { color: var(--text-primary); }

.nav-back {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 0;
  transition: color var(--t-fast);
}
.nav-back:hover { color: var(--text-primary); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-secondary);
  transition: var(--t-mid);
}

/* Workspace status badge */
.ws-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}
.ws-status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background var(--t-mid);
}
.ws-status.active .ws-status-dot { background: var(--status-active); box-shadow: 0 0 6px var(--gold-300); }
.ws-status.done   .ws-status-dot { background: var(--status-done); }
.ws-status.error  .ws-status-dot { background: var(--status-error); }

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  z-index: 99;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: var(--gap-lg) var(--gap-xl);
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
  animation: slideDown 0.2s ease;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.mobile-link {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--gap-sm) 0;
  border-bottom: 1px solid var(--border-subtle);
}

/* ════════════════════════════════════════════════════════════
   BUTTONS
════════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  border-radius: var(--r-md);
  transition: all var(--t-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--gold-300);
  color: #0a0900;
  padding: 10px 20px;
  box-shadow: 0 0 20px var(--glow-gold), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-primary:hover {
  background: var(--gold-200);
  box-shadow: 0 0 32px rgba(201,168,76,0.35), inset 0 1px 0 rgba(255,255,255,0.2);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-mid);
  padding: 9px 19px;
}
.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-gold);
  background: rgba(201,168,76,0.05);
}

.btn-lg  { font-size: 13px; padding: 14px 28px; border-radius: var(--r-md); }
.btn-sm  { font-size: 11px; padding: 7px 14px; }
.btn-full { width: 100%; margin-top: var(--gap-md); }

.btn-loader {
  width: 14px; height: 14px;
  border: 1.5px solid rgba(0,0,0,0.3);
  border-top-color: #0a0900;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* Segmented control */
.segmented-control {
  display: flex;
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 3px;
  gap: 2px;
}
.seg-btn {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 7px 8px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all var(--t-fast);
}
.seg-btn.active {
  background: var(--bg-card);
  color: var(--gold-200);
  box-shadow: 0 1px 3px rgba(0,0,0,0.4);
}
.seg-btn:hover:not(.active) { color: var(--text-secondary); }

/* ════════════════════════════════════════════════════════════
   LANDING — HERO
════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: calc(var(--nav-h) + 60px) var(--gap-xl) var(--gap-2xl);
}

#star-canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(ellipse at center,
    rgba(201,168,76,0.07) 0%,
    rgba(91,130,190,0.04) 40%,
    transparent 70%
  );
  pointer-events: none;
  filter: blur(40px);
}

.hero-orb {
  position: absolute;
  bottom: -120px;
  right: -80px;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(ellipse at 30% 30%,
    rgba(91,130,190,0.08) 0%,
    transparent 60%
  );
  pointer-events: none;
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 820px;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-200);
  border: 1px solid var(--border-gold);
  background: rgba(201,168,76,0.05);
  padding: 6px 14px;
  border-radius: 40px;
  margin-bottom: var(--gap-xl);
  animation: heroFadeUp 0.8s ease both;
}
.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold-300);
  box-shadow: 0 0 8px var(--gold-300);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(52px, 7vw, 96px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: var(--gap-lg);
  animation: heroFadeUp 0.8s 0.1s ease both;
}
.hero-headline em {
  font-style: italic;
  color: var(--gold-200);
  font-weight: 400;
}

.hero-sub {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto var(--gap-xl);
  animation: heroFadeUp 0.8s 0.2s ease both;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-md);
  flex-wrap: wrap;
  margin-bottom: var(--gap-2xl);
  animation: heroFadeUp 0.8s 0.3s ease both;
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-md);
  flex-wrap: wrap;
  animation: heroFadeUp 0.8s 0.4s ease both;
}
.meta-item {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}
.meta-num {
  color: var(--gold-300);
  margin-right: 4px;
}
.meta-div { color: var(--text-muted); }

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ════════════════════════════════════════════════════════════
   LANDING — SECTIONS SHARED
════════════════════════════════════════════════════════════ */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--gap-xl);
}
.section-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-300);
  margin-bottom: var(--gap-md);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: var(--gap-2xl);
  max-width: 520px;
}

/* ════════════════════════════════════════════════════════════
   LANDING — FEATURES
════════════════════════════════════════════════════════════ */
.features-section {
  padding: var(--gap-2xl) 0;
  border-top: 1px solid var(--border-subtle);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-lg);
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: var(--gap-xl) var(--gap-lg);
  transition: all var(--t-mid);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
  opacity: 0;
  transition: opacity var(--t-mid);
}
.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-gold);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 20px var(--glow-gold);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 44px; height: 44px;
  border: 1px solid var(--border-gold);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-300);
  margin-bottom: var(--gap-lg);
  background: rgba(201,168,76,0.05);
}

.feature-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--gap-sm);
}
.feature-body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ════════════════════════════════════════════════════════════
   LANDING — WORKFLOW
════════════════════════════════════════════════════════════ */
.workflow-section {
  padding: var(--gap-2xl) 0;
  border-top: 1px solid var(--border-subtle);
}

.workflow-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 640px;
  margin-bottom: var(--gap-2xl);
}

.workflow-step {
  display: flex;
  gap: var(--gap-xl);
  align-items: flex-start;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold-400);
  min-width: 28px;
  padding-top: 4px;
}

.step-content {
  padding: 0 0 var(--gap-xl) 0;
}
.step-content h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.step-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.workflow-connector {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--border-gold), transparent);
  margin-left: 13px;
}

.workflow-cta {
  display: flex;
}

/* ════════════════════════════════════════════════════════════
   FOOTER
════════════════════════════════════════════════════════════ */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: var(--gap-xl) 0;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--gap-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--gap-md);
}
.footer-copy {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

/* ════════════════════════════════════════════════════════════
   WORKSPACE — LAYOUT
════════════════════════════════════════════════════════════ */
.workspace {
  display: flex;
  min-height: 100vh;
  padding-top: var(--nav-h);
}

/* ── LEFT PANEL (INPUT) ─ */
.panel-input {
  width: var(--sidebar-w);
  flex-shrink: 0;
  min-height: calc(100vh - var(--nav-h));
  border-right: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  padding: var(--gap-xl) var(--gap-lg);
  display: flex;
  flex-direction: column;
  gap: var(--gap-lg);
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  overflow-y: auto;
}
.panel-input::-webkit-scrollbar { width: 4px; }
.panel-input::-webkit-scrollbar-thumb { background: var(--border-mid); border-radius: 2px; }

.panel-header { margin-bottom: var(--gap-sm); }
.panel-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.panel-sub {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ── CENTER ─ */
.workspace-center {
  flex: 1;
  padding: var(--gap-xl);
  display: flex;
  flex-direction: column;
  gap: var(--gap-xl);
  overflow-y: auto;
  min-width: 0;
}

/* ════════════════════════════════════════════════════════════
   FORM ELEMENTS
════════════════════════════════════════════════════════════ */
.field-group {
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
}
.field-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.field-optional {
  color: var(--text-muted);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}
.field-textarea {
  width: 100%;
  background: var(--bg-raised);
  border: 1px solid var(--border-mid);
  border-radius: var(--r-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  padding: var(--gap-md);
  resize: vertical;
  min-height: 100px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.field-textarea::placeholder { color: var(--text-muted); font-style: italic; }
.field-textarea:focus {
  outline: none;
  border-color: var(--border-gold-vivid);
  box-shadow: 0 0 0 3px rgba(201,168,76,0.08);
}
.field-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.field-hint {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}
.char-count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

/* Range */
.range-wrapper {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
}
.range-input {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 2px;
  background: var(--border-mid);
  border-radius: 2px;
  outline: none;
}
.range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--gold-300);
  cursor: pointer;
  box-shadow: 0 0 8px var(--glow-gold);
  transition: transform var(--t-fast);
}
.range-input::-webkit-slider-thumb:hover { transform: scale(1.2); }
.range-value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-200);
  min-width: 24px;
  text-align: right;
}

/* ════════════════════════════════════════════════════════════
   UPLOAD ZONE
════════════════════════════════════════════════════════════ */
.upload-zone {
  border: 1px dashed var(--border-gold);
  border-radius: var(--r-lg);
  padding: var(--gap-xl) var(--gap-md);
  text-align: center;
  cursor: pointer;
  background: rgba(201,168,76,0.02);
  transition: all var(--t-mid);
  position: relative;
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--gold-300);
  background: rgba(201,168,76,0.06);
  box-shadow: 0 0 20px var(--glow-gold);
}
.upload-icon {
  color: var(--gold-400);
  margin-bottom: var(--gap-md);
  display: flex;
  justify-content: center;
}
.upload-primary {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.upload-link {
  color: var(--gold-200);
  text-decoration: underline;
  text-decoration-color: rgba(201,168,76,0.3);
}
.upload-secondary {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

/* File list */
.file-list {
  display: flex;
  flex-direction: column;
  gap: var(--gap-xs);
}
.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 8px 12px;
  animation: fileAppear 0.2s ease;
}
@keyframes fileAppear {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}
.file-name {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 200px;
}
.file-size {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  margin-left: auto;
  margin-right: 8px;
}
.file-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  display: flex;
  align-items: center;
  transition: color var(--t-fast);
  flex-shrink: 0;
}
.file-remove:hover { color: var(--status-error); }

/* ════════════════════════════════════════════════════════════
   PIPELINE PANEL
════════════════════════════════════════════════════════════ */
.pipeline-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: var(--gap-lg) var(--gap-xl);
}
.pipeline-header {
  display: flex;
  align-items: center;
  gap: var(--gap-lg);
  margin-bottom: var(--gap-lg);
}
.pipeline-progress-bar {
  flex: 1;
  height: 2px;
  background: var(--border-subtle);
  border-radius: 2px;
  overflow: hidden;
}
.pipeline-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-400), var(--gold-200));
  border-radius: 2px;
  transition: width 0.5s ease;
  box-shadow: 0 0 8px var(--gold-300);
}

.pipeline-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
}
.pipeline-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}
.step-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  margin-bottom: var(--gap-sm);
}
.step-circle {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border-mid);
  background: var(--bg-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  transition: all var(--t-mid);
}
.pipeline-step.active .step-circle {
  border-color: var(--gold-300);
  color: var(--gold-300);
  background: rgba(201,168,76,0.08);
  box-shadow: 0 0 16px var(--glow-gold);
}
.pipeline-step.done .step-circle {
  border-color: var(--status-done);
  color: var(--status-done);
  background: rgba(91,191,110,0.08);
}
.pipeline-step.error .step-circle {
  border-color: var(--status-error);
  color: var(--status-error);
}

.step-line {
  height: 2px;
  width: calc(100% - 32px);
  background: var(--border-subtle);
  position: absolute;
  top: 16px;
  left: calc(50% + 16px);
  transition: background var(--t-mid);
}
.pipeline-step:last-child .step-line { display: none; }
.pipeline-step.done .step-line { background: var(--status-done); opacity: 0.4; }

.step-info {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.step-name {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color var(--t-mid);
}
.pipeline-step.active .step-name { color: var(--gold-200); }
.pipeline-step.done .step-name   { color: var(--status-done); }

.step-status-text {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* ════════════════════════════════════════════════════════════
   IDLE PLACEHOLDER
════════════════════════════════════════════════════════════ */
.idle-placeholder {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--gap-2xl);
  min-height: 400px;
}
.idle-orb {
  width: 120px; height: 120px;
  border-radius: 50%;
  background: radial-gradient(ellipse at center,
    rgba(201,168,76,0.12) 0%,
    rgba(91,130,190,0.06) 50%,
    transparent 70%
  );
  border: 1px solid var(--border-gold);
  margin-bottom: var(--gap-xl);
  animation: orbFloat 4s ease-in-out infinite;
}
@keyframes orbFloat {
  0%, 100% { transform: translateY(0); box-shadow: 0 0 30px var(--glow-gold); }
  50% { transform: translateY(-10px); box-shadow: 0 10px 40px var(--glow-gold); }
}
.idle-placeholder h3 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: var(--gap-sm);
}
.idle-placeholder p {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 380px;
  line-height: 1.7;
}
.idle-placeholder em { color: var(--gold-200); font-style: italic; }

/* ════════════════════════════════════════════════════════════
   SOURCES / RESULTS PANEL
════════════════════════════════════════════════════════════ */
.results-panel, .report-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  overflow: hidden;
  animation: panelReveal 0.4s ease;
}
@keyframes panelReveal {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--gap-lg) var(--gap-xl);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: var(--gap-sm);
}
.results-actions { display: flex; gap: var(--gap-sm); }

.sources-list {
  padding: var(--gap-md) var(--gap-lg);
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
  max-height: 480px;
  overflow-y: auto;
}
.sources-list::-webkit-scrollbar { width: 4px; }
.sources-list::-webkit-scrollbar-thumb { background: var(--border-mid); border-radius: 2px; }

.source-item {
  display: flex;
  align-items: flex-start;
  gap: var(--gap-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: var(--gap-md) var(--gap-lg);
  cursor: pointer;
  transition: all var(--t-fast);
  animation: sourceAppear 0.25s ease both;
}
.source-item:hover {
  border-color: var(--border-gold);
  background: var(--bg-card-hover);
}
.source-item.selected {
  border-color: var(--border-gold-vivid);
  background: rgba(201,168,76,0.04);
}
@keyframes sourceAppear {
  from { opacity: 0; transform: translateX(-6px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Custom checkbox */
.source-check {
  width: 18px; height: 18px;
  border: 1.5px solid var(--border-mid);
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t-fast);
  background: var(--bg-raised);
}
.source-item.selected .source-check {
  background: var(--gold-300);
  border-color: var(--gold-300);
}
.source-check svg { opacity: 0; transition: opacity var(--t-fast); }
.source-item.selected .source-check svg { opacity: 1; }

.source-body { flex: 1; min-width: 0; }
.source-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.source-url {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--blue-300);
  margin-bottom: var(--gap-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.source-snippet {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.source-meta {
  display: flex;
  gap: var(--gap-sm);
  margin-top: var(--gap-sm);
}
.source-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}
.source-tag.rel-high { border-color: rgba(91,191,110,0.3); color: #5bbf6e; }
.source-tag.rel-mid  { border-color: var(--border-gold); color: var(--gold-300); }

.approval-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--gap-md) var(--gap-xl);
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  flex-wrap: wrap;
  gap: var(--gap-sm);
}
.approval-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}
.approval-hint span {
  color: var(--gold-200);
  font-weight: 600;
}

/* ════════════════════════════════════════════════════════════
   REPORT VIEWER
════════════════════════════════════════════════════════════ */
.report-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--gap-md) var(--gap-xl);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: var(--gap-sm);
}
.report-meta {
  display: flex;
  align-items: center;
  gap: var(--gap-lg);
}
.report-word-count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}
.report-actions { display: flex; gap: var(--gap-sm); flex-wrap: wrap; }

.report-body {
  padding: var(--gap-2xl);
  max-width: 800px;
  margin: 0 auto;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-primary);
}

/* Report typography */
.report-body h1 {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 400;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: var(--gap-lg);
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--border-gold);
  padding-bottom: var(--gap-lg);
}
.report-body h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  margin: var(--gap-2xl) 0 var(--gap-md);
  letter-spacing: -0.005em;
}
.report-body h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--gold-200);
  margin: var(--gap-xl) 0 var(--gap-sm);
}
.report-body p { margin-bottom: var(--gap-md); }
.report-body ul, .report-body ol {
  padding-left: var(--gap-xl);
  margin-bottom: var(--gap-md);
}
.report-body li { margin-bottom: 6px; color: var(--text-secondary); }
.report-body strong { color: var(--text-primary); font-weight: 700; }
.report-body em { color: var(--gold-100); font-style: italic; }
.report-body a { color: var(--blue-300); text-decoration: underline; text-decoration-color: rgba(91,130,190,0.4); }

.report-body blockquote {
  border-left: 2px solid var(--gold-300);
  margin: var(--gap-lg) 0;
  padding: var(--gap-md) var(--gap-xl);
  background: rgba(201,168,76,0.04);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

.report-body code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--bg-raised);
  padding: 2px 6px;
  border-radius: var(--r-sm);
  color: var(--gold-100);
  border: 1px solid var(--border-subtle);
}
.report-body pre {
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: var(--gap-lg);
  overflow-x: auto;
  margin: var(--gap-lg) 0;
}
.report-body pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 13px;
  line-height: 1.6;
}

.report-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--gap-lg) 0;
  font-size: 14px;
}
.report-body th {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-300);
  text-align: left;
  padding: var(--gap-sm) var(--gap-md);
  border-bottom: 1px solid var(--border-gold);
}
.report-body td {
  padding: var(--gap-sm) var(--gap-md);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
}
.report-body tr:hover td { background: rgba(201,168,76,0.02); }

/* Callout / note */
.report-callout {
  display: flex;
  gap: var(--gap-md);
  padding: var(--gap-md) var(--gap-lg);
  border-radius: var(--r-md);
  margin: var(--gap-lg) 0;
  font-size: 14px;
}
.report-callout.info {
  background: rgba(91,130,190,0.08);
  border: 1px solid rgba(91,130,190,0.2);
  color: var(--blue-100);
}
.report-callout.warn {
  background: rgba(201,168,76,0.06);
  border: 1px solid var(--border-gold);
  color: var(--gold-100);
}

/* Sources section */
.sources-section {
  border-top: 1px solid var(--border-subtle);
  padding: var(--gap-xl) var(--gap-2xl);
  max-width: 800px;
  margin: 0 auto;
}
.sources-section h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--gap-md);
}
.report-source-item {
  display: flex;
  align-items: flex-start;
  gap: var(--gap-md);
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.report-source-item:last-child { border-bottom: none; }
.report-source-num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  min-width: 20px;
}
.report-source-info { flex: 1; min-width: 0; }
.report-source-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}
.report-source-url {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--blue-300);
}

/* ════════════════════════════════════════════════════════════
   TOAST MESSAGES
════════════════════════════════════════════════════════════ */
.toast-area {
  position: fixed;
  bottom: var(--gap-xl);
  right: var(--gap-xl);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  background: var(--bg-card);
  border: 1px solid var(--border-mid);
  border-radius: var(--r-md);
  padding: 12px 16px;
  min-width: 260px;
  max-width: 380px;
  pointer-events: all;
  animation: toastIn 0.3s ease;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.toast.removing { animation: toastOut 0.3s ease forwards; }
.toast.success { border-color: rgba(91,191,110,0.3); }
.toast.error   { border-color: rgba(224,92,92,0.3); }
.toast.warn    { border-color: var(--border-gold); }
.toast.info    { border-color: rgba(91,130,190,0.3); }

.toast-icon { flex-shrink: 0; font-size: 14px; }
.toast-text {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}
.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  transition: color var(--t-fast);
}
.toast-close:hover { color: var(--text-primary); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(20px); }
}

/* ════════════════════════════════════════════════════════════
   ANIMATIONS
════════════════════════════════════════════════════════════ */
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.spin { animation: spin 1s linear infinite; transform-origin: center; }

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  :root { --sidebar-w: 280px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}

@media (max-width: 768px) {
  :root { --sidebar-w: 100%; }

  .workspace {
    flex-direction: column;
  }
  .panel-input {
    width: 100%;
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }
  .workspace-center { padding: var(--gap-md); }

  .features-grid { grid-template-columns: 1fr; }
  .nav-inner { padding: 0 var(--gap-md); }
  .section-inner { padding: 0 var(--gap-md); }
  .hero { padding: calc(var(--nav-h) + 40px) var(--gap-md) var(--gap-2xl); }

  .pipeline-steps { flex-wrap: wrap; gap: var(--gap-md); justify-content: center; }
  .step-line { display: none; }
  .pipeline-step { flex: 0 0 calc(50% - var(--gap-sm)); }

  .report-body {
    padding: var(--gap-lg);
    font-size: 14px;
  }
  .report-body h1 { font-size: 28px; }
  .report-body h2 { font-size: 22px; }

  .report-toolbar, .approval-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .report-actions { flex-wrap: wrap; }

  .sources-section { padding: var(--gap-lg); }
  .toast-area { left: var(--gap-md); right: var(--gap-md); bottom: var(--gap-md); }
  .toast { min-width: unset; }

  .workflow-step { flex-direction: column; gap: var(--gap-sm); }
  .footer-inner { flex-direction: column; gap: var(--gap-sm); }
  .hero-meta { flex-direction: column; gap: var(--gap-sm); }
}

@media (max-width: 480px) {
  .pipeline-step { flex: 0 0 100%; flex-direction: row; gap: var(--gap-md); align-items: center; }
  .step-info { text-align: left; }
  .step-indicator { flex-direction: row; width: auto; margin-bottom: 0; }
}

/* ════════════════════════════════════════════════════════════
   HISTORY MODAL
════════════════════════════════════════════════════════════ */
.history-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 9, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity var(--t-mid);
}
.history-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}
.history-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-gold);
  border-radius: var(--r-lg);
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 64px rgba(0,0,0,0.8);
  transform: translateY(0) scale(1);
  transition: transform var(--t-mid);
}
.history-overlay.hidden .history-panel {
  transform: translateY(20px) scale(0.95);
}
.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--gap-lg) var(--gap-xl);
  border-bottom: 1px solid var(--border-subtle);
}
.history-header h2 {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--text-primary);
  margin: 0;
}
.history-list {
  padding: var(--gap-md) var(--gap-xl);
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
}
.history-list::-webkit-scrollbar { width: 4px; }
.history-list::-webkit-scrollbar-thumb { background: var(--border-mid); border-radius: 2px; }

.history-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: var(--gap-md) var(--gap-lg);
  cursor: pointer;
  transition: all var(--t-fast);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.history-item:hover {
  border-color: var(--border-gold);
  background: var(--bg-card-hover);
}
.history-item-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.history-topic {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-right: 12px;
}
.history-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.history-date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}
.history-status {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
}
.history-status.completed {
  border-color: rgba(91,191,110,0.3);
  color: #5bbf6e;
}
.history-status.in-progress {
  border-color: var(--border-gold);
  color: var(--gold-300);
}
.history-loading, .history-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--gap-2xl) 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  gap: var(--gap-sm);
  text-align: center;
}