/* ═══════════════════════════════════════════
   NEUROSCAN — Smart Contract Brain Scanner
   Complete Design System v2 — Pixel Perfect
   ═══════════════════════════════════════════ */

/* ── RESET & VARIABLES ── */
:root {
  --bg: #050810;
  --bg-card: rgba(10, 15, 30, 0.75);
  --border: rgba(0, 255, 136, 0.12);
  --border-hover: rgba(0, 255, 136, 0.3);
  --accent: #00ff88;
  --accent-dim: rgba(0, 255, 136, 0.15);
  --danger: #ff0040;
  --danger-dim: rgba(255, 0, 64, 0.15);
  --warning: #ff6b00;
  --warning-dim: rgba(255, 107, 0, 0.15);
  --medium: #ffd000;
  --medium-dim: rgba(255, 208, 0, 0.15);
  --safe: #00ff88;
  --info: #00d4ff;
  --info-dim: rgba(0, 212, 255, 0.15);
  --text: #e0e6f0;
  --text-dim: #6b7a99;
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Inter', -apple-system, sans-serif;
  --glow-accent: 0 0 20px rgba(0,255,136,0.3), 0 0 60px rgba(0,255,136,0.1);
  --glow-danger: 0 0 20px rgba(255,0,64,0.4), 0 0 60px rgba(255,0,64,0.15);
  --radius: 14px;
  --header-h: 68px;
  --footer-h: 48px;
}

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

html {
  height: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

/* ── CUSTOM SCROLLBARS (global) ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(0, 255, 136, 0.2);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(0, 255, 136, 0.4); }
* { scrollbar-width: thin; scrollbar-color: rgba(0,255,136,0.2) transparent; }

/* ── PARTICLE CANVAS ── */
#particles {
  position: fixed; inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ── SCAN LINE ── */
.scan-line {
  position: fixed; left: 0; right: 0;
  height: 2px; z-index: 50;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  box-shadow: 0 0 30px var(--accent), 0 0 60px var(--accent);
  animation: scanSweep 2s ease-in-out infinite;
  pointer-events: none;
}
@keyframes scanSweep {
  0%   { top: 0; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* ═══════════════════════
   HEADER
   ═══════════════════════ */
header {
  position: sticky; top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  padding: 0 clamp(16px, 3vw, 32px);
  border-bottom: 1px solid var(--border);
  background: rgba(5, 8, 16, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  flex-shrink: 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.logo-icon {
  flex-shrink: 0;
  animation: logoPulse 3s ease-in-out infinite;
}
@keyframes logoPulse {
  0%, 100% { filter: drop-shadow(0 0 4px rgba(0,255,136,0.3)); }
  50%      { filter: drop-shadow(0 0 14px rgba(0,255,136,0.6)); }
}

.logo-text h1 {
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--accent);
  text-shadow: 0 0 20px rgba(0,255,136,0.4);
  white-space: nowrap;
}

.logo-sub {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 1px;
  font-family: var(--font-mono);
  white-space: nowrap;
}

.header-links { flex-shrink: 0; }

.gh-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  white-space: nowrap;
}
.gh-link:hover {
  color: var(--accent);
  border-color: var(--border-hover);
  box-shadow: var(--glow-accent);
}

/* ═══════════════════════
   GLASS PANELS (shared)
   ═══════════════════════ */
.glass-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 24px;
  transition: border-color 0.3s ease;
}
.glass-panel:hover {
  border-color: var(--border-hover);
}

.glass-panel h2 {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--accent);
  margin-bottom: 8px;
}

.glass-panel h3 {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ═══════════════════════
   MAIN LAYOUT
   ═══════════════════════ */
main {
  position: relative;
  z-index: 5;
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: clamp(16px, 2vw, 24px);
}

/* ── LANDING STATE (centered input) ── */
main.landing {
  align-items: center;
}

/* ── SCANNING STATE (3-col grid) ── */
main.scanning {
  display: grid;
  grid-template-columns: 300px 1fr 280px;
  grid-template-rows: auto 1fr;
  gap: 16px;
  align-items: start;
}

/* ═══════════════════════
   INPUT PANEL
   ═══════════════════════ */
.input-panel {
  width: 100%;
  max-width: 540px;
  text-align: center;
  animation: fadeUp 0.5s ease-out;
}

.input-panel.compact {
  max-width: none;
  grid-column: 1;
  grid-row: 1 / 3;
  text-align: left;
  animation: slideLeft 0.4s ease-out;
  align-self: start;
  position: sticky;
  top: calc(var(--header-h) + 16px);
}

.input-desc {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 20px;
  line-height: 1.6;
}

.input-group {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.input-group input {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.input-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(0,255,136,0.1);
}
.input-group input::placeholder { color: var(--text-dim); }

.input-group select {
  flex-shrink: 0;
  width: 110px;
  padding: 12px 28px 12px 12px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%236b7a99' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}
.input-group select:focus {
  border-color: var(--accent);
}

/* ── API KEY (optional) ── */
.apikey-toggle {
  margin-bottom: 10px;
}
.apikey-toggle-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  padding: 4px 0;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}
.apikey-toggle-btn:hover { color: var(--accent); }
.apikey-tag {
  font-size: 9px;
  background: rgba(0,212,255,0.1);
  color: var(--info);
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.3px;
}

.apikey-group {
  margin-bottom: 14px;
  animation: fadeIn 0.3s ease-out;
}
.apikey-group input {
  width: 100%;
  padding: 10px 12px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  outline: none;
  transition: border-color 0.3s;
}
.apikey-group input:focus { border-color: var(--info); }
.apikey-group input::placeholder { color: var(--text-dim); }
.apikey-hint {
  font-size: 10px;
  color: var(--text-dim);
  margin-top: 6px;
  font-family: var(--font-mono);
}
.apikey-hint a {
  color: var(--info);
  text-decoration: none;
}
.apikey-hint a:hover { text-decoration: underline; }

/* ── BUTTONS ── */
.input-actions {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.btn-scan {
  flex: 1;
  padding: 13px 20px;
  background: linear-gradient(135deg, rgba(0,255,136,0.12), rgba(0,212,255,0.06));
  border: 1px solid var(--accent);
  border-radius: 10px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}
.btn-scan::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(0,255,136,0.08), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s;
}
.btn-scan:hover::before { transform: translateX(100%); }
.btn-scan:hover {
  box-shadow: var(--glow-accent);
  transform: translateY(-1px);
}
.btn-scan:active { transform: translateY(0); }
.btn-scan:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-demo {
  flex-shrink: 0;
  padding: 13px 20px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn-demo:hover {
  border-color: var(--info);
  color: var(--info);
}

/* ── SCAN STATUS ── */
.scan-status {
  margin-top: 16px;
  padding: 14px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: 10px;
  border: 1px solid rgba(0,255,136,0.06);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  text-align: left;
  max-height: 260px;
  overflow-y: auto;
}

.scan-status .status-line {
  padding: 3px 0;
  opacity: 0;
  animation: statusFade 0.3s forwards;
  word-break: break-word;
}
.scan-status .status-line::before {
  content: '▸ ';
  color: var(--text-dim);
}

@keyframes statusFade {
  to { opacity: 1; }
}

/* ═══════════════════════
   GRAPH CONTAINER
   ═══════════════════════ */
.graph-container {
  grid-column: 2;
  grid-row: 1 / 3;
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(5, 8, 16, 0.4);
  overflow: hidden;
  animation: fadeIn 0.6s ease-out;
  min-height: 500px;
}

#neuralGraph {
  width: 100%;
  height: 100%;
  display: block;
}

/* ── NODE TOOLTIP ── */
.node-tooltip {
  position: absolute;
  background: rgba(8, 12, 24, 0.95);
  border: 1px solid var(--border-hover);
  border-radius: 10px;
  padding: 14px 16px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  font-family: var(--font-mono);
  font-size: 12px;
  max-width: 280px;
  pointer-events: none;
  z-index: 25;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6);
}
.node-tooltip .tt-name {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 4px;
  word-break: break-all;
}
.node-tooltip .tt-vis {
  font-size: 11px;
  color: var(--text-dim);
}
.node-tooltip .tt-risk {
  margin-top: 8px;
  font-weight: 600;
}

/* ── D3 GRAPH ELEMENTS ── */
.node-circle { cursor: pointer; }
.node-label {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--text);
  pointer-events: none;
  text-anchor: middle;
}
.link-line {
  stroke-opacity: 0.25;
  transition: stroke-opacity 0.3s, stroke-width 0.3s;
}
.link-animated {
  animation: linkPulse 2.5s ease-in-out infinite;
}
@keyframes linkPulse {
  0%, 100% { stroke-opacity: 0.12; }
  50%      { stroke-opacity: 0.4; }
}

/* ═══════════════════════
   RISK PANEL
   ═══════════════════════ */
.risk-panel {
  grid-column: 3;
  grid-row: 1;
  text-align: center;
  animation: slideRight 0.5s ease-out;
}

.gauge-container {
  position: relative;
  width: 160px;
  height: 160px;
  margin: 0 auto 16px;
}
.gauge-svg { width: 100%; height: 100%; }
.gauge-arc {
  transition: stroke-dashoffset 2s cubic-bezier(0.16, 1, 0.3, 1), stroke 1s ease;
}

.gauge-value {
  position: absolute; inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}
.gauge-value span:first-child {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.gauge-label {
  font-size: 13px !important;
  color: var(--text-dim) !important;
  font-weight: 400 !important;
}

.risk-level {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 8px;
  display: inline-block;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.risk-level.critical { background: var(--danger-dim); color: var(--danger); }
.risk-level.high     { background: var(--warning-dim); color: var(--warning); }
.risk-level.medium   { background: var(--medium-dim); color: var(--medium); }
.risk-level.low      { background: var(--accent-dim); color: var(--accent); }

.risk-stats {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
}
.risk-stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.risk-stat:last-child { border-bottom: none; }
.risk-stat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 8px;
  flex-shrink: 0;
}

/* ═══════════════════════
   FINDINGS PANEL
   ═══════════════════════ */
.findings-panel {
  grid-column: 3;
  grid-row: 2;
  overflow-y: auto;
  animation: slideRight 0.6s ease-out;
  max-height: calc(100vh - var(--header-h) - 380px);
  min-height: 200px;
}

.findings-count {
  background: var(--danger-dim);
  color: var(--danger);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}

.findings-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.finding-card {
  padding: 12px;
  border-radius: 10px;
  border-left: 3px solid var(--danger);
  background: rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
.finding-card:hover {
  background: rgba(0, 0, 0, 0.4);
  transform: translateX(3px);
}
.finding-card.critical { border-left-color: var(--danger); }
.finding-card.high     { border-left-color: var(--warning); }
.finding-card.medium   { border-left-color: var(--medium); }
.finding-card.low      { border-left-color: var(--info); }

.finding-severity {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}
.finding-severity.critical { background: var(--danger-dim); color: var(--danger); }
.finding-severity.high     { background: var(--warning-dim); color: var(--warning); }
.finding-severity.medium   { background: var(--medium-dim); color: var(--medium); }
.finding-severity.low      { background: var(--info-dim); color: var(--info); }

.finding-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  line-height: 1.4;
}
.finding-func {
  font-size: 11px;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

/* ═══════════════════════
   DETAIL PANEL (floating)
   ═══════════════════════ */
.detail-panel {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: min(680px, calc(100vw - 32px));
  z-index: 35;
  animation: slideUp 0.35s ease-out;
  box-shadow: 0 -8px 40px rgba(0,0,0,0.6);
}

.detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.detail-close {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 18px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all 0.2s;
}
.detail-close:hover {
  color: var(--accent);
  background: rgba(0,255,136,0.08);
}

.detail-content {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-dim);
}
.detail-content code {
  background: rgba(0,255,136,0.08);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 11px;
}
.detail-content p { margin-bottom: 6px; }

/* ═══════════════════════
   FOOTER
   ═══════════════════════ */
footer {
  position: relative;
  z-index: 5;
  flex-shrink: 0;
  text-align: center;
  padding: 14px clamp(16px, 3vw, 32px);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
  background: rgba(5, 8, 16, 0.6);
}
footer a {
  color: var(--accent);
  text-decoration: none;
}
footer a:hover { text-decoration: underline; }
.footer-sep { margin: 0 8px; }

/* ═══════════════════════
   ANIMATIONS
   ═══════════════════════ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slideLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideRight {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideUp {
  from { opacity: 0; transform: translate(-50%, 24px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

.hidden { display: none !important; }

/* ═══════════════════════
   RESPONSIVE — TABLET
   ═══════════════════════ */
@media (max-width: 1100px) {
  main.scanning {
    grid-template-columns: 260px 1fr 240px;
    gap: 12px;
  }
  .gauge-container { width: 140px; height: 140px; }
  .gauge-value span:first-child { font-size: 32px; }
}

@media (max-width: 900px) {
  main.scanning {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto auto;
  }
  .input-panel.compact {
    grid-column: 1 / -1;
    grid-row: 1;
    position: static;
  }
  .graph-container {
    grid-column: 1 / -1;
    grid-row: 2;
    min-height: 420px;
  }
  .risk-panel {
    grid-column: 1;
    grid-row: 3;
  }
  .findings-panel {
    grid-column: 2;
    grid-row: 3;
    max-height: 400px;
  }
  .input-panel.compact .input-group {
    display: flex;
  }
  .scan-status { max-height: 120px; }
}

/* ═══════════════════════
   RESPONSIVE — MOBILE
   ═══════════════════════ */
@media (max-width: 640px) {
  :root { --header-h: 56px; }

  header { gap: 8px; }

  .logo-icon svg { width: 30px; height: 30px; }
  .logo-text h1 { font-size: 16px; letter-spacing: 2px; }
  .logo-sub { font-size: 9px; }
  .gh-link { padding: 6px 10px; font-size: 11px; }
  .gh-link svg { width: 16px; height: 16px; }

  main { padding: 12px; }
  main.landing { padding-top: 10vh; align-items: flex-start; }

  .input-panel { padding: 20px 16px; }
  .input-panel h2 { font-size: 16px; }
  .input-desc { font-size: 13px; margin-bottom: 14px; }

  .input-group {
    flex-direction: column;
    gap: 10px;
  }
  .input-group select {
    width: 100%;
  }

  .input-actions {
    flex-direction: column;
    gap: 8px;
  }
  .btn-scan, .btn-demo {
    width: 100%;
    text-align: center;
  }

  main.scanning {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto;
    gap: 12px;
  }
  .input-panel.compact {
    grid-column: 1;
    grid-row: 1;
  }
  .graph-container {
    grid-column: 1;
    grid-row: 2;
    min-height: 350px;
  }
  .risk-panel {
    grid-column: 1;
    grid-row: 3;
  }
  .findings-panel {
    grid-column: 1;
    grid-row: 4;
    max-height: 350px;
  }

  .gauge-container { width: 140px; height: 140px; }
  .gauge-value span:first-child { font-size: 34px; }

  .glass-panel { padding: 18px 14px; border-radius: 12px; }

  .detail-panel {
    bottom: 12px;
    padding: 18px 14px;
    width: calc(100vw - 24px);
  }

  .scan-status { max-height: 100px; font-size: 10px; }
  .finding-title { font-size: 11px; }
}

/* ═══════════════════════
   RESPONSIVE — SMALL MOBILE
   ═══════════════════════ */
@media (max-width: 380px) {
  .logo-text h1 { font-size: 14px; letter-spacing: 1px; }
  .logo-sub { display: none; }
  .gh-link span { display: none; }
}