/* ============================================================
   DEADLOCK TOOLKIT — DARK CYBERPUNK THEME
   ============================================================ */

:root {
  --bg-base:       #050810;
  --bg-panel:      #080d1a;
  --bg-card:       #0c1425;
  --bg-input:      #0a1020;
  --border:        #1a2a4a;
  --border-bright: #1e3a6e;
  --accent:        #00d4ff;
  --accent2:       #ff3a6e;
  --accent3:       #39ff14;
  --accent4:       #ffb800;
  --text-primary:  #e0eeff;
  --text-sec:      #7a99cc;
  --text-dim:      #3a5580;
  --font-mono:     'Share Tech Mono', monospace;
  --font-head:     'Exo 2', sans-serif;
  --font-body:     'Rajdhani', sans-serif;
  --glow-cyan:     0 0 20px rgba(0,212,255,0.4);
  --glow-red:      0 0 20px rgba(255,58,110,0.4);
  --glow-green:    0 0 20px rgba(57,255,20,0.4);
  --radius:        6px;
}

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

html { scroll-behavior: smooth; }

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

/* ── HERO ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(ellipse at 20% 50%, #001830 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, #00051a 0%, transparent 50%),
              var(--bg-base);
}

#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2rem;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 16px;
  margin-bottom: 1.5rem;
  animation: pulseGlow 3s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%,100% { box-shadow: 0 0 8px rgba(0,212,255,0.3); }
  50%      { box-shadow: 0 0 24px rgba(0,212,255,0.7); }
}

.hero h1 {
  font-family: var(--font-head);
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-shadow: 0 0 60px rgba(0,212,255,0.15);
  margin-bottom: 1rem;
}

.hero h1 .accent {
  color: var(--accent);
  text-shadow: var(--glow-cyan);
}

.hero-sub {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-sec);
  letter-spacing: 0.1em;
  margin-bottom: 2.5rem;
}

.hero-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: 10px 20px;
  border: 1px solid var(--border-bright);
  background: rgba(0,20,50,0.6);
  color: var(--text-sec);
  cursor: pointer;
  transition: all 0.2s;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}

.nav-pill:hover, .nav-pill.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0,212,255,0.08);
  box-shadow: var(--glow-cyan);
}

.scan-line {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: scanMove 4s ease-in-out infinite;
}

@keyframes scanMove {
  0%   { transform: translateY(0); opacity: 1; }
  50%  { transform: translateY(-40vh); opacity: 0.5; }
  100% { transform: translateY(0); opacity: 1; }
}

/* ── MAIN / SECTIONS ── */
main { padding: 0 clamp(1rem, 4vw, 3rem) 4rem; max-width: 1400px; margin: 0 auto; }

.toolkit-section {
  display: none;
  animation: fadeIn 0.4s ease;
  padding-top: 3rem;
}

.toolkit-section.active { display: block; }

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

/* ── SECTION HEADER ── */
.section-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem 2rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  margin-bottom: 1.5rem;
}

.section-num {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  color: var(--text-dim);
  line-height: 1;
}

.section-header h2 {
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.section-header p { color: var(--text-sec); font-size: 0.85rem; margin-top: 2px; }

.section-header { justify-content: flex-start; }
.section-header > div:last-child { margin-left: auto; }

.status-led {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  padding: 4px 12px;
  border-radius: 2px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--text-dim);
  color: var(--text-dim);
  transition: all 0.3s;
  white-space: nowrap;
}

.status-led.safe    { color: var(--accent3); border-color: var(--accent3); box-shadow: var(--glow-green); }
.status-led.unsafe  { color: var(--accent2); border-color: var(--accent2); box-shadow: var(--glow-red); }
.status-led.running { color: var(--accent4); border-color: var(--accent4); }

/* ── CONFIG BAR ── */
.config-bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding: 1rem 1.5rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.config-bar label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-sec);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── INPUTS ── */
input[type="number"],
input[type="text"],
select {
  background: var(--bg-input);
  border: 1px solid var(--border-bright);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 6px 10px;
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 70px;
}

select { width: auto; min-width: 140px; }

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(0,212,255,0.15);
}

/* ── BUTTONS ── */
button { cursor: pointer; font-family: var(--font-body); font-weight: 600; transition: all 0.2s; border: none; }

.btn-primary {
  background: rgba(0,212,255,0.1);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 8px 20px;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  border-radius: var(--radius);
}
.btn-primary:hover { background: rgba(0,212,255,0.2); box-shadow: var(--glow-cyan); }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-bright);
  color: var(--text-sec);
  padding: 8px 20px;
  font-size: 0.85rem;
  border-radius: var(--radius);
}
.btn-ghost:hover { border-color: var(--text-sec); color: var(--text-primary); }

.btn-danger {
  background: rgba(255,58,110,0.1);
  border: 1px solid var(--accent2);
  color: var(--accent2);
  padding: 8px 20px;
  font-size: 0.85rem;
  border-radius: var(--radius);
}
.btn-danger:hover { background: rgba(255,58,110,0.2); box-shadow: var(--glow-red); }

.btn-run {
  background: linear-gradient(135deg, #006b40, #00a060);
  border: 1px solid var(--accent3);
  color: #fff;
  padding: 12px 36px;
  font-size: 0.9rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  border-radius: var(--radius);
  box-shadow: 0 0 12px rgba(57,255,20,0.2);
}
.btn-run:hover { box-shadow: 0 0 24px rgba(57,255,20,0.5); transform: translateY(-1px); }

.full-width { width: 100%; margin-bottom: 8px; text-align: center; }

/* ── MATRICES ── */
.matrices-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.matrix-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 1.2rem;
}

.matrix-panel.computed { border-color: rgba(0,212,255,0.3); }

.matrix-panel h3 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tag {
  font-size: 0.6rem;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.3);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 20px;
}

.matrix-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.matrix-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-sec);
  min-width: 24px;
}

.matrix-row input {
  width: 52px !important;
  text-align: center;
  padding: 5px;
}

.computed-value {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  width: 52px;
  text-align: center;
  padding: 5px;
  background: rgba(0,212,255,0.05);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius);
}

.avail-input { width: 60px !important; margin-right: 6px; }

.action-bar { display: flex; justify-content: center; margin: 1.5rem 0; }

.scrollable-matrix { max-height: 280px; overflow-y: auto; }
.scrollable-matrix::-webkit-scrollbar { width: 4px; }
.scrollable-matrix::-webkit-scrollbar-track { background: var(--bg-base); }
.scrollable-matrix::-webkit-scrollbar-thumb { background: var(--border-bright); }

/* ── OUTPUT PANEL ── */
.output-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 1.5rem;
  margin-top: 1.5rem;
  animation: fadeIn 0.3s ease;
}

.output-panel.hidden { display: none; }

.output-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.result-badge {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 6px 16px;
  border-radius: var(--radius);
  letter-spacing: 0.1em;
  font-weight: bold;
}

.result-badge.safe   { background: rgba(57,255,20,0.1); border: 1px solid var(--accent3); color: var(--accent3); }
.result-badge.unsafe { background: rgba(255,58,110,0.1); border: 1px solid var(--accent2); color: var(--accent2); }

.safe-seq {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}

.steps-log {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.8;
  color: var(--text-sec);
  max-height: 240px;
  overflow-y: auto;
}

.steps-log .step-ok   { color: var(--accent3); }
.steps-log .step-info { color: var(--accent); }
.steps-log .step-warn { color: var(--accent2); }

/* ── RAG ── */
.rag-workspace {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 1.5rem;
}

.rag-controls {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 1.2rem;
}

.rag-controls h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.control-group {
  margin-bottom: 10px;
}

.control-group label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-sec);
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.control-group input,
.control-group select { width: 100%; }

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

.rag-canvas-wrap {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border);
}

#ragCanvas {
  width: 100%;
  display: block;
}

.rag-legend {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(5,8,16,0.85);
  border: 1px solid var(--border);
  padding: 10px 14px;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-sec);
}

.leg-item { display: flex; align-items: center; gap: 8px; }
.leg-dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.leg-dot.process { background: var(--accent); }
.leg-dot.resource { background: var(--accent4); border-radius: 0; }
.leg-arrow { display: inline-block; width: 24px; height: 2px; }
.leg-arrow.req { background: var(--accent2); }
.leg-arrow.asgn { background: var(--accent3); }

/* ── SIMULATOR ── */
.preset-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 1rem 1.5rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.preset-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  margin-right: 4px;
}

.preset-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 6px 14px;
  background: rgba(255,184,0,0.07);
  border: 1px solid rgba(255,184,0,0.3);
  color: var(--accent4);
  border-radius: 3px;
  letter-spacing: 0.05em;
  transition: all 0.2s;
}

.preset-btn:hover {
  background: rgba(255,184,0,0.15);
  box-shadow: 0 0 12px rgba(255,184,0,0.3);
}

.sim-workspace {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.5rem;
}

.sim-controls {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 1.2rem;
}

.sim-controls h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.sim-main {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sim-visual {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  flex: 1;
  min-height: 340px;
  position: relative;
}

#simCanvas { width: 100%; display: block; }

.sim-steps-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 1rem;
  max-height: 180px;
  overflow-y: auto;
}

.sim-steps-panel h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

.event-log {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.8;
}

.ev-ok   { color: var(--accent3); }
.ev-warn { color: var(--accent4); }
.ev-err  { color: var(--accent2); }
.ev-info { color: var(--accent); }

.speed-control {
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-sec);
}

.speed-control input[type="range"] {
  width: 100%;
  margin-top: 6px;
  accent-color: var(--accent4);
  height: 4px;
}

/* ── RECOVERY ── */
.recovery-scenario {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.recovery-scenario h3 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.scenario-builder {
  display: flex;
  align-items: flex-end;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}

.scenario-builder .control-group { margin: 0; }
.scenario-builder .control-group input { width: 70px; }

.scenario-display {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-sec);
  line-height: 1.8;
}

.strategies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.strategy-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}

.strategy-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent2);
  opacity: 0;
  transition: opacity 0.2s;
}

.strategy-card:hover { border-color: rgba(0,212,255,0.3); }
.strategy-card:hover::before { opacity: 1; }

.strat-icon {
  font-size: 1.8rem;
  margin-bottom: 0.8rem;
  display: block;
}

.strategy-card h3 {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.strategy-card p {
  font-size: 0.82rem;
  color: var(--text-sec);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.strat-config {
  font-size: 0.78rem;
  color: var(--text-sec);
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.strat-config label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.strat-config select { width: 100%; margin-top: 4px; }

.btn-strat {
  width: 100%;
  padding: 10px;
  background: rgba(0,212,255,0.07);
  border: 1px solid var(--border-bright);
  color: var(--text-sec);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  transition: all 0.2s;
}

.btn-strat:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0,212,255,0.12);
}

.btn-strat.highlight {
  background: rgba(57,255,20,0.08);
  border-color: var(--accent3);
  color: var(--accent3);
}

.btn-strat.highlight:hover {
  background: rgba(57,255,20,0.18);
  box-shadow: var(--glow-green);
}

/* ── FOOTER ── */
.footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 3px; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .matrices-grid { grid-template-columns: 1fr; }
  .rag-workspace { grid-template-columns: 1fr; }
  .sim-workspace { grid-template-columns: 1fr; }
}

/* ── IMPORT BAR (cross-tab data transfer) ── */
.import-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 0.75rem 1.5rem;
  background: rgba(0, 212, 255, 0.03);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-left: 3px solid rgba(0, 212, 255, 0.4);
  margin-bottom: 1.5rem;
  animation: fadeIn 0.3s ease;
}

.import-bar-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  margin-right: 4px;
  white-space: nowrap;
}

.btn-import {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  padding: 6px 14px;
  background: rgba(0, 212, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.25);
  color: var(--accent);
  border-radius: var(--radius);
  transition: all 0.2s;
  cursor: pointer;
  white-space: nowrap;
}

.btn-import:hover {
  background: rgba(0, 212, 255, 0.14);
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.25);
  transform: translateY(-1px);
}

.btn-import:active {
  transform: translateY(0);
}

/* ── TOAST ── */
@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

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