:root {
  --bg: #0a0a0a;
  --bg-card: #141414;
  --bg-hover: #1a1a1a;
  --border: #2a2a2a;
  --text: #e8e8e8;
  --text-dim: #888;
  --accent: #6366F1;
  --accent-dim: #4F46E5;
  --red: #EF4444;
  --green: #22C55E;
  --yellow: #EAB308;
  --orange: #F97316;
  --critical: #DC2626;
  --font-display: 'Space Mono', monospace;
  --font-body: 'IBM Plex Sans', sans-serif;
  --max-width: 1100px;
  --radius: 8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.2; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* Header */
header {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(10px);
  z-index: 100;
}

.header-inner { display: flex; align-items: center; justify-content: space-between; }

.logo { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; color: var(--text); }
.logo span { color: var(--accent); }

nav { display: flex; gap: 24px; align-items: center; }
nav a { color: var(--text-dim); font-size: 0.9rem; transition: color 0.2s; }
nav a:hover, nav a.active { color: var(--text); text-decoration: none; }

.mobile-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

/* Hero */
.hero { text-align: center; padding: 60px 0 40px; }
.hero h1 { font-size: 2.2rem; margin-bottom: 16px; }
.hero h1 span { color: var(--accent); }
.hero p { color: var(--text-dim); font-size: 1.05rem; max-width: 650px; margin: 0 auto; }

/* Disclaimer */
.disclaimer {
  background: rgba(99,102,241,0.08);
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 24px;
  font-size: 0.85rem;
  color: var(--text-dim);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.disclaimer .shield { font-size: 1.2rem; flex-shrink: 0; }

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.card h3 { font-size: 1rem; margin-bottom: 16px; }

/* Forms */
label { display: block; font-size: 0.8rem; color: var(--text-dim); margin-bottom: 4px; font-family: var(--font-display); }

textarea, input[type="text"], select {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

textarea:focus, input:focus, select:focus { outline: none; border-color: var(--accent); }
textarea { resize: vertical; min-height: 180px; font-family: var(--font-display); font-size: 0.85rem; line-height: 1.5; }

/* Buttons */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dim); }
.btn-secondary { background: var(--bg); border: 1px solid var(--border); color: var(--text); }
.btn-secondary:hover { border-color: var(--accent); }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }

/* Layout */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 20px;
  align-items: start;
}

/* Score display */
.score-ring {
  width: 140px;
  height: 140px;
  margin: 0 auto 16px;
  position: relative;
}

.score-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.score-ring circle { fill: none; stroke-width: 8; }
.score-ring .bg { stroke: var(--border); }
.score-ring .fill { stroke: var(--accent); stroke-linecap: round; transition: stroke-dashoffset 0.8s ease, stroke 0.3s; }

.score-value {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
}

.score-label {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.grade {
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 8px;
}

.grade-A { color: var(--green); }
.grade-B { color: #86EFAC; }
.grade-C { color: var(--yellow); }
.grade-D { color: var(--orange); }
.grade-F { color: var(--red); }

/* Category results */
.category-result {
  padding: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 8px;
}

.category-result .cat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.category-result .cat-name { font-weight: 600; font-size: 0.9rem; }
.category-result .cat-status { font-family: var(--font-display); font-size: 0.8rem; padding: 2px 8px; border-radius: 4px; }

.status-protected { background: rgba(34,197,94,0.15); color: var(--green); }
.status-partial { background: rgba(234,179,8,0.15); color: var(--yellow); }
.status-vulnerable { background: rgba(239,68,68,0.15); color: var(--red); }

.cat-details { display: none; margin-top: 10px; }
.category-result.open .cat-details { display: block; }

/* Attack list */
.attack-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

.attack-item:last-child { border-bottom: none; }

.attack-icon { width: 18px; flex-shrink: 0; font-size: 0.85rem; text-align: center; margin-top: 2px; }
.attack-pass .attack-icon { color: var(--green); }
.attack-fail .attack-icon { color: var(--red); }

.attack-info { flex: 1; }
.attack-name { font-weight: 600; }
.attack-severity { font-family: var(--font-display); font-size: 0.7rem; padding: 1px 5px; border-radius: 3px; margin-left: 6px; }

.sev-critical { background: rgba(220,38,38,0.2); color: var(--critical); }
.sev-high { background: rgba(239,68,68,0.15); color: var(--red); }
.sev-medium { background: rgba(234,179,8,0.15); color: var(--yellow); }
.sev-low { background: rgba(34,197,94,0.1); color: var(--text-dim); }

.attack-fix { color: var(--text-dim); font-size: 0.8rem; margin-top: 4px; }

/* Tips panel */
.tips-panel { position: sticky; top: 80px; }
.tips-panel h3 { margin-bottom: 12px; }
.tips-panel ol { padding-left: 18px; font-size: 0.85rem; color: var(--text-dim); }
.tips-panel li { margin-bottom: 10px; line-height: 1.5; }
.tips-panel strong { color: var(--text); }

/* FAQ */
.faq-section { padding: 60px 0; }
.faq-section h2 { font-size: 1.5rem; text-align: center; margin-bottom: 32px; }

.faq-item { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 8px; overflow: hidden; }
.faq-q {
  padding: 16px 20px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.95rem;
  background: var(--bg-card);
  transition: background 0.2s;
}
.faq-q:hover { background: var(--bg-hover); }
.faq-q::after { content: '+'; font-family: var(--font-display); font-size: 1.2rem; color: var(--accent); }
.faq-item.open .faq-q::after { content: '-'; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; padding: 0 20px; color: var(--text-dim); font-size: 0.9rem; line-height: 1.7; }
.faq-item.open .faq-a { max-height: 500px; padding: 0 20px 16px; }

/* Footer */
footer { border-top: 1px solid var(--border); padding: 32px 0; margin-top: 60px; text-align: center; color: var(--text-dim); font-size: 0.85rem; }
footer a { color: var(--text-dim); }
footer a:hover { color: var(--accent); }

/* Blog */
.blog-list { list-style: none; }
.blog-item { margin-bottom: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.blog-item:last-child { border-bottom: none; }
.blog-item h3 a { color: var(--text); }
.blog-item h3 a:hover { color: var(--accent); }
.blog-meta { color: var(--text-dim); font-size: 0.8rem; margin-top: 4px; }
.blog-excerpt { color: var(--text-dim); margin-top: 8px; font-size: 0.9rem; }

/* Article */
.article { max-width: 720px; margin: 0 auto; padding: 40px 20px; }
.article h1 { font-size: 2rem; margin-bottom: 8px; }
.article .meta { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 32px; }
.article h2 { font-size: 1.3rem; margin-top: 32px; margin-bottom: 12px; }
.article h3 { font-size: 1.1rem; margin-top: 24px; margin-bottom: 8px; }
.article p { margin-bottom: 16px; color: var(--text); line-height: 1.8; }
.article ul, .article ol { margin-bottom: 16px; padding-left: 24px; }
.article li { margin-bottom: 8px; line-height: 1.7; }
.article code { font-family: var(--font-display); background: var(--bg-card); padding: 2px 6px; border-radius: 4px; font-size: 0.85em; }
.article pre { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; overflow-x: auto; margin-bottom: 16px; font-family: var(--font-display); font-size: 0.85rem; line-height: 1.5; }
.article pre code { background: none; padding: 0; }
.article blockquote { border-left: 3px solid var(--accent); padding-left: 16px; color: var(--text-dim); margin-bottom: 16px; }

/* About */
.about-content { max-width: 720px; margin: 0 auto; padding: 60px 20px; }
.about-content h1 { font-size: 2rem; margin-bottom: 24px; }
.about-content p { margin-bottom: 16px; line-height: 1.8; }

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 1.6rem; }
  .hero { padding: 40px 0 24px; }
  .main-grid { grid-template-columns: 1fr; }
  .tips-panel { position: static; }
  nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); flex-direction: column; padding: 16px 20px; gap: 12px; }
  nav.open { display: flex; }
  .mobile-toggle { display: block; }
}