/* NetLeakCheck - Cyber & Network Privacy Theme */
:root {
  --bg-main: #070A11;
  --bg-card: #0F172A;
  --bg-card-hover: #162036;
  --bg-subtle: #1E293B;
  --border: #334155;
  --border-light: rgba(255, 255, 255, 0.08);
  --cyan: #00E5FF;
  --cyan-dim: rgba(0, 229, 255, 0.12);
  --cyan-glow: 0 0 25px rgba(0, 229, 255, 0.25);
  --emerald: #10B981;
  --emerald-dim: rgba(16, 185, 129, 0.15);
  --red: #EF4444;
  --red-dim: rgba(239, 68, 68, 0.15);
  --amber: #F59E0B;
  --amber-dim: rgba(245, 158, 11, 0.15);
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-subtle: #64748B;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan); text-decoration: none; transition: var(--transition); }
a:hover { color: #5CE1E6; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  background: rgba(7, 10, 17, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo-link { display: flex; align-items: center; }
.logo-img { height: 42px; width: auto; }

.nav-links { display: flex; align-items: center; gap: 22px; list-style: none; }
.nav-link {
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}
.nav-link:hover, .nav-link.active {
  color: var(--cyan);
  background: var(--cyan-dim);
}
.lang-badge {
  font-size: 11px;
  padding: 4px 8px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
}

/* Hero Section */
.hero {
  padding: 50px 0 40px;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--cyan-dim);
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 20px;
  color: var(--cyan);
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--emerald);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--emerald);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.25); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}
.hero h1 {
  font-size: 42px;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 16px;
}
.hero h1 span { color: var(--cyan); text-shadow: var(--cyan-glow); }
.hero-desc {
  max-width: 680px;
  margin: 0 auto 30px;
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.6;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}
.btn-cyan {
  background: var(--cyan);
  color: #000;
}
.btn-cyan:hover {
  background: #5CE1E6;
  box-shadow: var(--cyan-glow);
  color: #000;
}
.btn-emerald {
  background: var(--emerald);
  color: #000;
}
.btn-emerald:hover { background: #34D399; color: #000; }
.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text-main);
}
.btn-outline:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* Cards & Grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin: 30px 0;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(0, 229, 255, 0.4);
  transform: translateY(-2px);
}
.card-icon {
  font-size: 28px;
  margin-bottom: 14px;
  display: inline-block;
}
.card-title {
  font-size: 19px;
  font-weight: 700;
  color: #FFF;
  margin-bottom: 8px;
}
.card-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
}

/* Tool Workspace Styles */
.tool-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  margin: 24px 0 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.input-text, .select-box, .textarea-box {
  width: 100%;
  padding: 13px 16px;
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 15px;
  font-family: var(--mono);
  outline: none;
  transition: var(--transition);
}
.input-text:focus, .select-box:focus, .textarea-box:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
}

/* Status Box */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  font-family: var(--mono);
  letter-spacing: 0.5px;
}
.status-safe {
  background: var(--emerald-dim);
  color: var(--emerald);
  border: 1px solid var(--emerald);
}
.status-danger {
  background: var(--red-dim);
  color: var(--red);
  border: 1px solid var(--red);
}
.status-warn {
  background: var(--amber-dim);
  color: var(--amber);
  border: 1px solid var(--amber);
}

/* Monospace Results Display */
.code-display {
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-family: var(--mono);
  font-size: 14px;
  color: #FFF;
  word-break: break-all;
  position: relative;
}
.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
}
.copy-btn:hover { color: var(--cyan); border-color: var(--cyan); }

/* Comparison Table */
.table-wrap {
  overflow-x: auto;
  margin: 25px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.vpn-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.vpn-table th, .vpn-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.vpn-table th {
  background: var(--bg-subtle);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.vpn-table tr:hover { background: rgba(255, 255, 255, 0.02); }

/* Article & Editorial */
.article-body {
  max-width: 840px;
  margin: 30px auto;
  color: #CBD5E1;
  font-size: 16px;
  line-height: 1.75;
}
.article-body h2 {
  font-size: 26px;
  font-weight: 800;
  color: #FFF;
  margin: 36px 0 16px;
  letter-spacing: -0.5px;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: #FFF;
  margin: 24px 0 12px;
}
.article-body p { margin-bottom: 18px; }
.article-body ul, .article-body ol { margin: 0 0 20px 24px; }
.article-body li { margin-bottom: 8px; }

/* Ad Slot (Zero CLS) */
.ad-slot {
  min-height: 100px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-subtle);
  font-size: 12px;
  font-family: var(--mono);
  margin: 30px 0;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Footer */
.footer {
  background: #04060A;
  border-top: 1px solid var(--border);
  padding: 50px 0 30px;
  margin-top: 70px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 30px;
  margin-bottom: 40px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #FFF;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--text-muted); font-size: 13.5px; }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--text-subtle);
  flex-wrap: wrap;
  gap: 12px;
}

/* Toast Notification */
#toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--cyan);
  color: #000;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 13.5px;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 1000;
}
#toast.show { opacity: 1; }

@media (max-width: 768px) {
  .hero h1 { font-size: 30px; }
  .header-inner { height: auto; padding: 14px 0; flex-direction: column; gap: 12px; }
  .nav-links { flex-wrap: wrap; justify-content: center; gap: 10px; }
  .footer-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .tool-box { padding: 18px; }
}