@import url('https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400&family=Unbounded:wght@400;700;900&display=swap');

:root {
  --bg: #080808;
  --surface: #0f0f0f;
  --text: #e8e8e8;
  --muted: #666;
  --border: #2a2a2a;
  --accent: #00ff9d;
  --accent-dim: rgba(0, 255, 157, 0.08);
  --warning: #ffaa00;
  --error: #ff3333;
  --font-display: 'Unbounded', 'Arial Black', sans-serif;
  --font-mono: 'Space Mono', 'Courier New', monospace;
}

body.mode-purge {
  --accent: #ff4400;
  --accent-dim: rgba(255, 68, 0, 0.08);
  --error: #ff6600;
}

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

html {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 16px;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,0) 50%, rgba(0,0,0,0.15) 50%, rgba(0,0,0,0.15));
  background-size: 100% 4px;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.25;
}

body::after {
  content: "";
  position: fixed;
  top: -50%; left: -50%; right: -50%; bottom: -50%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
  z-index: 9998;
}

* {
  cursor: crosshair;
}

a, button, .upload-zone, .nav-btn, input[type="file"] + label {
  cursor: pointer;
}

h1, h2, h3, .brand {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: -0.03em;
  line-height: 0.95;
  font-weight: 900;
}

h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  margin-bottom: 1.5rem;
  color: var(--text);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: 0.5rem;
}

p {
  color: var(--muted);
  line-height: 1.6;
  max-width: 60ch;
  font-size: 0.95rem;
  margin-bottom: 3rem;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4rem;
}

.brand {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text);
  text-decoration: none;
  line-height: 1;
}

.brand span {
  color: var(--accent);
}

nav {
  display: flex;
  gap: 0.75rem;
}

.nav-btn {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75rem;
  padding: 0.6rem 1.4rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  text-decoration: none;
  transition: all 0.2s ease;
  letter-spacing: 0.05em;
}

.nav-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.nav-btn.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.upload-zone {
  border: 2px dashed var(--border);
  padding: 4rem 2rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  background: var(--surface);
  margin-bottom: 2rem;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  border-style: solid;
  background: var(--accent-dim);
}

.upload-zone.scanning {
  border-color: var(--accent);
  border-style: solid;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.upload-zone .icon {
  margin-bottom: 1.5rem;
  color: var(--muted);
  transition: color 0.3s ease;
}

.upload-zone:hover .icon,
.upload-zone.dragover .icon {
  color: var(--accent);
}

.upload-zone h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text);
  font-family: var(--font-display);
}

.upload-zone p {
  margin: 0 auto;
  font-size: 0.85rem;
}

.btn {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  padding: 1rem 2rem;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--bg);
  text-decoration: none;
  display: inline-block;
  transition: all 0.2s ease;
  letter-spacing: 0.05em;
  margin-top: 1.5rem;
}

.btn:hover {
  background: transparent;
  color: var(--accent);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
}

.btn-outline:hover {
  background: var(--accent);
  color: var(--bg);
}

.results {
  margin-top: 2rem;
  padding: 2rem;
  border: 1px solid var(--border);
  background: var(--surface);
  display: none;
}

.results.active {
  display: block;
  animation: flickerIn 0.6s ease-out;
}

@keyframes flickerIn {
  0% { opacity: 0; transform: translateY(10px); }
  50% { opacity: 0.9; }
  100% { opacity: 1; transform: translateY(0); }
}

.verdict {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 900;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

.verdict.ai {
  color: var(--error);
}

.verdict.clean {
  color: var(--accent);
}

.verdict::after {
  content: '_';
  animation: blink 1s step-end infinite;
  margin-left: 0.2em;
}

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

.terminal {
  background: #000;
  border: 1px solid var(--border);
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
  overflow-x: auto;
  margin-top: 1.5rem;
}

.terminal .line {
  margin-bottom: 0.4rem;
  line-height: 1.5;
}

.terminal .line .key {
  color: var(--accent);
  font-weight: 700;
}

.terminal .line .val {
  color: var(--text);
}

.preview-wrap {
  margin-top: 1.5rem;
  position: relative;
  display: inline-block;
  max-width: 100%;
  border: 1px solid var(--border);
  padding: 4px;
  background: #000;
}

.preview-wrap::before,
.preview-wrap::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border: 2px solid var(--accent);
  transition: all 0.3s ease;
}

.preview-wrap::before {
  top: -2px;
  left: -2px;
  border-right: none;
  border-bottom: none;
}

.preview-wrap::after {
  bottom: -2px;
  right: -2px;
  border-left: none;
  border-top: none;
}

.preview-wrap img {
  max-width: 100%;
  max-height: 400px;
  display: block;
}

.scan-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  overflow: hidden;
  display: none;
}

.results.active .scan-overlay {
  display: block;
}

.scan-overlay::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 15px var(--accent), 0 0 30px var(--accent);
  animation: scanline 2.5s linear infinite;
}

@keyframes scanline {
  0% { top: 0%; opacity: 0; }
  5% { opacity: 1; }
  95% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

.bg-grid {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: center center;
  opacity: 0.15;
  pointer-events: none;
  z-index: -1;
}

footer {
  margin-top: 6rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-family: var(--font-mono);
}

.ai-warning {
  margin-top: 1.5rem;
  padding: 0.75rem;
  border: 1px solid var(--warning);
  background: rgba(255, 170, 0, 0.05);
  color: var(--warning);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: inline-block;
}

.ai-warning strong {
  color: var(--warning);
  font-weight: 700;
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 1.5rem;
    align-items: flex-start;
  }
  .upload-zone {
    padding: 3rem 1rem;
  }
  .results {
    padding: 1.5rem 1rem;
  }
}