:root {
  --bg: #0a0a0a;
  --bg-elevated: #0f0f0f;
  --bg-input: #0d0d0d;
  --bg-hover: #161616;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #ededed;
  --text-muted: #a1a1a1;
  --text-faint: #6e6e6e;
  --accent: #fafafa;
  --critical: #f87171;
  --warning: #e0b341;
  --info: #6ee7a8;
  --radius-lg: 18px;
  --radius: 12px;
  --radius-sm: 8px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}

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

html,
body {
  height: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  letter-spacing: -0.011em;
}

/* ---------- Header ---------- */
.header {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 1.1rem 1.75rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-sm);
}

.brand:hover {
  opacity: 0.9;
}

.logo-mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--accent);
  color: #0a0a0a;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.95rem;
}

.brand h1 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.divider {
  width: 1px;
  height: 18px;
  background: var(--border);
  margin: 0 0.4rem;
}

.header .tagline {
  color: var(--text-faint);
  font-size: 0.85rem;
  font-weight: 400;
}

/* ---------- Stage / views ---------- */
.stage {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  justify-content: center;
}

.view {
  display: none;
  width: 100%;
  max-width: 720px;
  padding: 4rem 1.5rem 3rem;
  margin: 0 auto;
  animation: fade-in 0.4s ease both;
}

.view.active {
  display: block;
}

#view-loading.active,
#view-input.active {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100%;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  margin-bottom: 1.75rem;
}

.hero-title {
  font-size: 2.1rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 0.85rem;
}

.hero-subtitle {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
  max-width: 520px;
  margin: 0 auto;
}

/* ---------- Composer card ---------- */
.composer {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.85rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.tabs {
  display: inline-flex;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
}

.tab {
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.84rem;
  font-weight: 450;
  font-family: inherit;
  letter-spacing: -0.01em;
  transition: background 0.15s, color 0.15s;
}

.tab:hover {
  color: var(--text);
  background: var(--bg-hover);
}

.tab.active {
  background: var(--accent);
  color: #0a0a0a;
  font-weight: 500;
}

/* ---------- Inputs ---------- */
.tab-content {
  display: block;
}

.tab-content.hidden {
  display: none;
}

textarea {
  width: 100%;
  height: 240px;
  background: transparent;
  border: none;
  padding: 0.4rem 0.5rem;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.65;
  resize: none;
}

textarea::placeholder,
input[type="text"]::placeholder {
  color: var(--text-faint);
}

textarea:focus,
input[type="text"]:focus {
  outline: none;
}

input[type="text"] {
  width: 100%;
  padding: 0.85rem 0.6rem;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 0.92rem;
  font-family: var(--font-mono);
}

/* Composer bottom bar */
.composer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.75rem;
  margin-top: 0.4rem;
  border-top: 1px solid var(--border);
}

.composer-hint {
  color: var(--text-faint);
  font-size: 0.8rem;
}

.composer-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* File dropzone */
.dropzone {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 3rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--border-strong);
  background: var(--bg-hover);
}

.dropzone .dz-icon {
  color: var(--text-faint);
}

.dropzone .dz-text {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.dropzone .dz-text u {
  color: var(--text);
  text-underline-offset: 3px;
}

.dropzone .dz-file {
  color: var(--text);
  font-weight: 500;
  font-size: 0.9rem;
  font-family: var(--font-mono);
}

input[type="file"] {
  display: none;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.2rem;
  background: var(--accent);
  color: #0a0a0a;
  border: 1px solid var(--accent);
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: inherit;
  letter-spacing: -0.01em;
  transition: opacity 0.15s, background 0.15s, transform 0.05s;
}

.btn:hover:not(:disabled) {
  opacity: 0.88;
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text);
  opacity: 1;
}

/* ---------- Loading view (mission control) ---------- */
:root {
  --mc: #4d9fff;
  --mc-soft: rgba(77, 159, 255, 0.5);
  --mc-faint: rgba(77, 159, 255, 0.12);
}

#view-loading {
  max-width: 920px;
}

.mission {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.mc-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-faint);
  text-align: center;
}

/* Grid of nodes */
.mc-grid {
  position: relative;
  width: 100%;
  max-width: 820px;
  height: 480px;
  margin: 0 auto;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 55%, transparent 100%);
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 55%, transparent 100%);
}

/* Connector lines (streaming telemetry) */
.mc-line {
  position: absolute;
  z-index: 1;
}

.mc-line.vertical {
  left: 50%;
  top: 14%;
  bottom: 14%;
  width: 1px;
  transform: translateX(-50%);
  background: repeating-linear-gradient(to bottom, var(--mc-soft) 0 5px, transparent 5px 11px);
  background-size: 1px 22px;
  animation: stream-v 0.9s linear infinite;
}

.mc-line.horizontal {
  top: 50%;
  left: 22%;
  right: 22%;
  height: 1px;
  transform: translateY(-50%);
  background: repeating-linear-gradient(to right, var(--mc-soft) 0 5px, transparent 5px 11px);
  background-size: 22px 1px;
  animation: stream-h 0.9s linear infinite;
}

@keyframes stream-v {
  to { background-position-y: 22px; }
}

@keyframes stream-h {
  to { background-position-x: -22px; }
}

/* Agent cards */
.agent {
  position: absolute;
  z-index: 2;
  width: 188px;
  padding: 0.85rem 0.95rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  animation: agent-pulse 2.4s ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

@keyframes agent-pulse {
  0%, 100% { border-color: var(--border); box-shadow: none; }
  50% { border-color: var(--mc-soft); box-shadow: 0 0 0 1px var(--mc-faint), 0 0 22px -6px var(--mc-soft); }
}

.agent-top { top: 0; left: 50%; transform: translateX(-50%); }
.agent-bottom { bottom: 0; left: 50%; transform: translateX(-50%); }
.agent-left { left: 0; top: 50%; transform: translateY(-50%); }
.agent-right { right: 0; top: 50%; transform: translateY(-50%); }

.agent-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.agent-icon {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: var(--mc-faint);
  color: var(--mc);
  flex-shrink: 0;
}

.agent-name {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  line-height: 1.2;
  flex: 1;
}

.agent-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mc);
  flex-shrink: 0;
  box-shadow: 0 0 8px var(--mc-soft);
  animation: blink 1.4s ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

@keyframes blink {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 1; }
}

.agent-status {
  margin-top: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Completed agent */
.agent.done {
  animation: none;
  border-color: rgba(110, 231, 168, 0.25);
}

.agent.done .agent-icon {
  background: rgba(110, 231, 168, 0.12);
  color: var(--info);
}

.agent.done .agent-dot {
  background: var(--info);
  box-shadow: 0 0 8px rgba(110, 231, 168, 0.5);
  animation: none;
  opacity: 1;
}

.agent.done .agent-status {
  color: var(--info);
}

/* Conductor */
.conductor {
  position: absolute;
  z-index: 3;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.conductor-orb {
  width: 116px;
  height: 116px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  background: radial-gradient(circle at 50% 50%, rgba(77, 159, 255, 0.18), rgba(13, 13, 13, 0.9) 70%);
  border: 1px solid var(--mc-soft);
  box-shadow: 0 0 0 1px var(--mc-faint), 0 0 40px -4px var(--mc-soft), inset 0 0 24px -8px var(--mc-soft);
  position: relative;
  animation: orb-glow 2s ease-in-out infinite;
}

.conductor-orb::before {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 1px solid var(--mc-faint);
  animation: orb-ring 2s ease-out infinite;
}

@keyframes orb-glow {
  0%, 100% { box-shadow: 0 0 0 1px var(--mc-faint), 0 0 32px -8px var(--mc-soft), inset 0 0 24px -8px var(--mc-soft); }
  50% { box-shadow: 0 0 0 1px var(--mc-faint), 0 0 52px -2px var(--mc-soft), inset 0 0 30px -6px var(--mc-soft); }
}

@keyframes orb-ring {
  0% { transform: scale(0.9); opacity: 0.7; }
  100% { transform: scale(1.35); opacity: 0; }
}

.conductor-name {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mc);
}

.conductor-count {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
}

.conductor-count b {
  color: var(--text);
  font-weight: 600;
}

/* Footer / telemetry */
.mc-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
}

.mc-elapsed {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
}

.mc-elapsed svg {
  color: var(--mc);
}

.mc-elapsed b {
  color: var(--text);
  font-weight: 600;
  font-size: 1.05rem;
}

.spinner {
  width: 30px;
  height: 30px;
  border: 2px solid var(--border);
  border-top-color: var(--text);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* ---------- Results ---------- */
.results-inner {
  width: 100%;
}

.summary {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 1.4rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
}

.grade-badge {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  font-size: 1.7rem;
  font-weight: 600;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.grade-A { color: var(--info); background: rgba(110, 231, 168, 0.08); border-color: rgba(110, 231, 168, 0.2); }
.grade-B { color: #7dd3fc; background: rgba(125, 211, 252, 0.08); border-color: rgba(125, 211, 252, 0.2); }
.grade-C { color: var(--warning); background: rgba(224, 179, 65, 0.08); border-color: rgba(224, 179, 65, 0.2); }
.grade-D { color: #fb923c; background: rgba(251, 146, 60, 0.08); border-color: rgba(251, 146, 60, 0.2); }
.grade-F { color: var(--critical); background: rgba(248, 113, 113, 0.08); border-color: rgba(248, 113, 113, 0.2); }

.summary-meta {
  flex: 1;
  min-width: 0;
}

.summary-score {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 1rem;
}

.summary-score span {
  color: var(--text-faint);
  font-size: 0.82rem;
  font-weight: 400;
}

.score-bar {
  height: 5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
  margin: 0.6rem 0;
}

.score-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.6s ease;
}

.summary-stats {
  display: flex;
  gap: 1.25rem;
  font-size: 0.82rem;
  color: var(--text-faint);
}

.summary-stats b {
  color: var(--text);
  font-weight: 500;
}

/* ---------- Report ---------- */
.report {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.report h1 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

.report h2 {
  font-size: 1rem;
  margin: 1.75rem 0 0.6rem;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.report h3 {
  font-size: 0.92rem;
  margin: 1.2rem 0 0.4rem;
  color: var(--text);
  font-weight: 500;
}

.report p {
  margin-bottom: 0.65rem;
}

.report strong {
  color: var(--text);
  font-weight: 500;
}

.report hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.25rem 0;
}

.report blockquote {
  border-left: 2px solid var(--border-strong);
  padding: 0.4rem 1rem;
  color: var(--text-muted);
  margin: 0.85rem 0;
}

.report code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.12rem 0.4rem;
  border-radius: 5px;
  color: var(--text);
}

/* ---------- Results footer ---------- */
.results-footer {
  display: flex;
  justify-content: center;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

/* ---------- Error ---------- */
.error {
  display: none;
  color: var(--critical);
  padding: 1rem 1.2rem;
  background: rgba(248, 113, 113, 0.06);
  border-radius: var(--radius);
  border: 1px solid rgba(248, 113, 113, 0.2);
  margin-bottom: 1.5rem;
  font-size: 0.88rem;
}

.error.active {
  display: block;
}

.hidden {
  display: none !important;
}

/* ---------- Scrollbars ---------- */
.stage::-webkit-scrollbar {
  width: 10px;
}

.stage::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  border: 3px solid var(--bg);
}

.stage::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.14);
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .mc-grid {
    height: 420px;
  }
  .agent {
    width: 150px;
    padding: 0.7rem 0.75rem;
  }
}

@media (max-width: 640px) {
  .view {
    padding: 2.5rem 1.1rem;
  }
  .hero-title {
    font-size: 1.7rem;
  }
  /* Stack the mission control vertically on phones */
  .mc-grid {
    height: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background: none;
    -webkit-mask-image: none;
    mask-image: none;
  }
  .mc-line { display: none; }
  .agent {
    position: static;
    transform: none;
    width: 100%;
  }
  .conductor { position: static; transform: none; order: -1; margin: 0 auto 0.5rem; }
}