/* ============================================
   VARIABLES & RESET
   ============================================ */
:root {
  --bg: #0a0a0a;
  --bg-2: #111111;
  --bg-3: #1a1a1a;
  --border: #222222;
  --border-light: #2a2a2a;
  --text: #e8e8e8;
  --text-dim: #666666;
  --text-dimmer: #333333;
  --green: #00ff88;
  --green-dim: rgba(0, 255, 136, 0.1);
  --green-mid: rgba(0, 255, 136, 0.3);
  --yellow: #ffcc00;
  --red: #ff4444;
  --blue: #4488ff;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
}

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

html { font-size: 16px; }

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

/* Noise texture overlay */
.noise {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.4;
}

/* ============================================
   HEADER
   ============================================ */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2.5rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  z-index: 100;
}

.logo {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text);
}

.logo-bracket { color: var(--text-dim); }
.logo-accent { color: var(--green); }

.header-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-dimmer);
  transition: background 0.3s;
}

.status-dot.active { background: var(--green); animation: pulse 2s infinite; }
.status-dot.error { background: var(--red); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ============================================
   MAIN
   ============================================ */
main {
  flex: 1;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
  padding: 4rem 2rem;
}

.hidden { display: none !important; }

/* ============================================
   SUBMIT SECTION
   ============================================ */
.hero-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--green);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.hero-title {
  font-family: var(--mono);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-family: var(--sans);
  font-size: 1rem;
  color: var(--text-dim);
  font-weight: 300;
  margin-bottom: 3rem;
}

.input-group {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-light);
  background: var(--bg-2);
  transition: border-color 0.2s;
  margin-bottom: 0.5rem;
}

.input-group:focus-within {
  border-color: var(--green);
  box-shadow: 0 0 0 1px var(--green-mid);
}

.input-prefix {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  padding: 0 0 0 1.25rem;
  white-space: nowrap;
}

#url-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.95rem;
  padding: 1.1rem 1rem;
  caret-color: var(--green);
}

#url-input::placeholder { color: var(--text-dimmer); }

#submit-btn {
  background: var(--green);
  color: #000;
  border: none;
  padding: 1.1rem 1.75rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.2s, opacity 0.2s;
  white-space: nowrap;
}

#submit-btn:hover { background: #00cc6e; }
#submit-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-arrow { font-size: 1rem; }

.input-error {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--red);
  min-height: 1.2rem;
}

/* Recent Audits */
.recent-section { margin-top: 4rem; }

.recent-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.recent-list { display: flex; flex-direction: column; gap: 0.5rem; }

.recent-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  background: var(--bg-2);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  font-family: var(--mono);
  font-size: 0.8rem;
}

.recent-item:hover {
  border-color: var(--border-light);
  background: var(--bg-3);
}

.recent-item-url { color: var(--text); }
.recent-item-score { color: var(--green); }
.recent-item-date { color: var(--text-dim); font-size: 0.7rem; }

/* ============================================
   PROGRESS SECTION
   ============================================ */
.progress-section { padding-top: 1rem; }

.progress-url {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--green);
  margin-bottom: 0.5rem;
}

.progress-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 3rem;
}

.stepper {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

.step:first-child { border-top: 1px solid var(--border); }

.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-icon {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dimmer);
  transition: color 0.3s;
}

.step-name {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 0.25rem;
  transition: color 0.3s;
}

.step-desc {
  font-family: var(--sans);
  font-size: 0.75rem;
  color: var(--text-dimmer);
  font-weight: 300;
}

.step-status {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-dimmer);
  text-align: right;
  min-width: 80px;
  transition: color 0.3s;
}

/* Step States */
.step.active .step-icon { color: var(--green); }
.step.active .step-name { color: var(--text); }
.step.active .step-status { color: var(--green); }
.step.active { background: var(--green-dim); padding-left: 1rem; padding-right: 1rem; margin: 0 -1rem; }

.step.complete .step-icon { color: var(--green); }
.step.complete .step-name { color: var(--text-dim); }
.step.complete .step-status { color: var(--green); }

.step.failed .step-icon { color: var(--red); }
.step.failed .step-name { color: var(--red); }
.step.failed .step-status { color: var(--red); }

/* Spinner for active step */
.spinner {
  display: inline-block;
  width: 10px;
  height: 10px;
  border: 1px solid var(--green-mid);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 0.4rem;
  vertical-align: middle;
}

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

.progress-elapsed {
  margin-top: 2rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dimmer);
}

/* ============================================
   REPORT SECTION
   ============================================ */
.report-header { margin-bottom: 3rem; }

.report-url-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--green);
  margin-bottom: 0.5rem;
}

.report-url-display {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
  word-break: break-all;
}

.report-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.report-meta-sep { color: var(--text-dimmer); }

.new-audit-btn {
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.3rem 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
}

.new-audit-btn:hover {
  border-color: var(--green);
  color: var(--green);
}

/* Score Cards */
.scores-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}

.score-card {
  background: var(--bg-2);
  padding: 1.5rem;
}

.score-overall { background: var(--bg-3); }

.score-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.score-number {
  font-family: var(--mono);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
  transition: color 0.5s;
}

.score-overall .score-number { font-size: 3rem; }

.score-number.good { color: var(--green); }
.score-number.ok { color: var(--yellow); }
.score-number.bad { color: var(--red); }

.score-bar {
  height: 2px;
  background: var(--border-light);
  overflow: hidden;
}

.score-fill {
  height: 100%;
  width: 0%;
  background: var(--green);
  transition: width 1s ease-out, background 0.5s;
}

.score-fill.ok { background: var(--yellow); }
.score-fill.bad { background: var(--red); }

/* Panels */
.panels-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.panel {
  background: var(--bg-2);
  padding: 1.5rem;
}

.panel-full {
  grid-column: 1 / -1;
  border-top: 1px solid var(--border);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.panel-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.panel-score {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--green);
}

/* Metrics */
.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.metric-row:last-child { border-bottom: none; }
.metric-key { color: var(--text-dim); }
.metric-value { color: var(--text); }

/* SEO Checks */
.check-row {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.check-row:last-child { border-bottom: none; }

.check-icon { flex-shrink: 0; margin-top: 1px; }
.check-icon.pass { color: var(--green); }
.check-icon.warn { color: var(--yellow); }
.check-icon.fail { color: var(--red); }

.check-message { color: var(--text-dim); line-height: 1.4; }
.check-impact { color: var(--text-dimmer); font-size: 0.68rem; margin-top: 0.2rem; }

/* Violations */
.violation-row {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.violation-row:last-child { border-bottom: none; }

.violation-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.violation-id {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text);
}

.violation-badge {
  font-family: var(--mono);
  font-size: 0.65rem;
  padding: 0.15rem 0.4rem;
  text-transform: uppercase;
}

.violation-badge.critical { background: rgba(255,68,68,0.15); color: var(--red); }
.violation-badge.serious { background: rgba(255,68,68,0.1); color: #ff8888; }
.violation-badge.moderate { background: rgba(255,204,0,0.1); color: var(--yellow); }
.violation-badge.minor { background: rgba(255,255,255,0.05); color: var(--text-dim); }

.violation-desc {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--text-dim);
  font-weight: 300;
}

.no-violations {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--green);
  padding: 1rem 0;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  padding: 1.5rem 2.5rem;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-dimmer);
  text-align: center;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.report-section { animation: fadeIn 0.4s ease-out; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 700px) {
  main { padding: 2rem 1rem; }
  header { padding: 1rem 1.25rem; }
  .scores-grid { grid-template-columns: 1fr 1fr; }
  .score-overall { grid-column: 1 / -1; }
  .panels-grid { grid-template-columns: 1fr; }
  .step { grid-template-columns: 40px 1fr auto; gap: 0.75rem; }
  #submit-btn span:first-child { display: none; }
}