/* ─────────────────────────────────────────────────────────────────────────────
   VectorLedger — CSS
   Color scheme and layout matching pyhsm.vectorguardlabs.com /
   vercre.vectorguardlabs.com
   ───────────────────────────────────────────────────────────────────────────── */

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

:root {
  --bg:           #ffffff;
  --bg-card:      #f5f6fa;
  --bg-card-alt:  #eef0f6;
  --bg-code:      #f0f1f7;
  --border:       #dde0ee;
  --border-light: #c8cce0;
  --accent:       #c8102e;
  --accent-glow:  rgba(200,16,46,0.10);
  --accent-hover: #e8233f;
  --accent2:      #1a6fe8;
  --accent2-dim:  rgba(26,111,232,0.12);
  --text:         #0a0b10;
  --text-muted:   #3a3f5c;
  --text-dim:     #7a7f9a;
  --green:        #1a8a5a;
  --green-dim:    rgba(26,138,90,0.10);
  --red:          #c8102e;
  --yellow:       #b45309;
  --radius:       10px;
  --radius-lg:    16px;
  --font:         'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --max-w:        1080px;
  --transition:   0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ────────────────────────────────────────────────────────────── */

h1, h2, h3, h4, h5 {
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); margin-bottom: 0.5rem; }
h3 { font-size: 1.15rem; font-weight: 600; }
p  { color: var(--text-muted); }

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

code, pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

/* ── Layout ────────────────────────────────────────────────────────────────── */

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border);
}
section:last-of-type { border-bottom: none; }

/* ── Navbar ────────────────────────────────────────────────────────────────── */

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}
.nav-brand .logo-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius);
  font-size: 0.875rem !important;
  font-weight: 600 !important;
  transition: background var(--transition), transform var(--transition) !important;
}
.nav-cta:hover {
  background: var(--accent-hover) !important;
  color: #fff !important;
  transform: translateY(-1px);
}

/* ── Hero ──────────────────────────────────────────────────────────────────── */

#hero {
  padding: 7rem 0 5rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  text-align: center;
}
#hero::before {
  content: '';
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(200,16,46,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(200,16,46,0.3);
  padding: 4px 14px;
  border-radius: 99px;
  margin-bottom: 1.5rem;
}
.hero-title {
  margin: 0 auto 1.5rem;
  max-width: 750px;
}
.hero-title span {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-title-red {
  background: none !important;
  -webkit-background-clip: unset !important;
  -webkit-text-fill-color: var(--accent) !important;
  background-clip: unset !important;
  color: var(--accent) !important;
}
.hero-desc {
  max-width: 620px;
  font-size: 1.1rem;
  line-height: 1.75;
  margin: 0 auto 1rem;
  color: var(--text-muted);
}
.hero-sub {
  max-width: 580px;
  font-size: 0.95rem;
  margin: 0 auto 2rem;
  color: var(--text-dim);
}
.hero-sub strong { color: var(--text-muted); font-weight: 500; }
.hero-cta-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(200,16,46,0.4);
}
.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-light);
}
.btn-outline:hover {
  color: var(--text);
  border-color: var(--accent);
  transform: translateY(-1px);
}
.hero-install {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--accent2);
  margin: 0 auto;
}
.hero-install .prompt { color: var(--text-dim); user-select: none; }
.copy-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-dim);
  padding: 2px 4px;
  border-radius: 4px;
  font-size: 0.85rem;
  transition: color var(--transition);
  margin-left: auto;
}
.copy-btn:hover { color: var(--accent); }

/* Install tabs */
.hero-install-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}
.install-tabs {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3px;
}
.install-tab {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.85rem;
  border-radius: calc(var(--radius) - 2px);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  font-family: var(--font);
}
.install-tab.active {
  background: var(--accent);
  color: #fff;
}
.install-tab:not(.active):hover { color: var(--text); }

/* ── Section header ────────────────────────────────────────────────────────── */

.section-header {
  margin-bottom: 3rem;
  text-align: center;
}
.section-header h2 { margin-bottom: 0.6rem; }
.section-header p { font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
.section-header .eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

/* ── Problem section ───────────────────────────────────────────────────────── */

#problem .pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0 2rem;
  justify-content: center;
}
.pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: 99px;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.pill .icon { font-size: 1rem; }
#problem .copy-block {
  max-width: 680px;
  margin: 0 auto;
  color: var(--text-muted);
  line-height: 1.75;
  text-align: left;
}
#problem .copy-block p + p { margin-top: 1rem; }

/* ── Features grid ─────────────────────────────────────────────────────────── */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}
.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.feature-icon {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  display: block;
}
.feature-card h3 { margin-bottom: 0.5rem; color: var(--text); }
.feature-card p  { font-size: 0.92rem; }

/* ── Use cases ─────────────────────────────────────────────────────────────── */

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.usecase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}
.usecase-card:hover {
  border-color: var(--accent2);
  transform: translateY(-2px);
}
.usecase-card .uc-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  display: block;
}
.usecase-card h3 { color: var(--text); margin-bottom: 0.5rem; }
.usecase-card p  { font-size: 0.92rem; }

/* ── Comparison table ──────────────────────────────────────────────────────── */

#comparison .table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.compare-table th, .compare-table td {
  padding: 0.85rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.compare-table thead th {
  background: var(--bg-card-alt);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}
.compare-table thead th:first-child { color: var(--text); }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover td { background: rgba(200,16,46,0.04); }
.compare-table tbody td { color: var(--text-muted); }
.compare-table tbody td:first-child { color: var(--text); font-weight: 500; }
.compare-table .yes  { color: var(--green);      font-weight: 600; }
.compare-table .no   { color: var(--text-dim);   font-weight: 400; }
.compare-table .vgl  { color: var(--accent);     font-weight: 600; }
#comparison .note {
  margin-top: 1.25rem;
  font-size: 0.875rem;
  color: var(--text-dim);
  font-style: italic;
  text-align: center;
}

/* ── How it works ──────────────────────────────────────────────────────────── */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.step {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition);
}
.step:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  flex-shrink: 0;
}
.step h3 { margin-bottom: 0.5rem; color: var(--text); }
.step p   { font-size: 0.92rem; }
.step code {
  word-break: break-all;
  overflow-wrap: break-word;
}


/* ── Security model ────────────────────────────────────────────────────────── */

.security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.security-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition);
}
.security-card:hover { border-color: var(--green); }
.security-card .sec-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 99px;
  margin-bottom: 1rem;
}
.sec-badge.pass { background: var(--green-dim); color: var(--green);  }
.sec-badge.warn { background: rgba(251,191,36,0.12); color: var(--yellow); }
.security-card h3 { color: var(--text); margin-bottom: 0.5rem; font-size: 1rem; }
.security-card p  { font-size: 0.88rem; }

/* ── FAQ ───────────────────────────────────────────────────────────────────── */

.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--accent); }
.faq-q {
  width: 100%;
  text-align: left;
  background: var(--bg-card);
  border: none;
  padding: 1.1rem 1.5rem;
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: background var(--transition);
}
.faq-q:hover { background: var(--bg-card-alt); }
.faq-arrow {
  flex-shrink: 0;
  font-size: 0.75rem;
  color: var(--accent);
  transition: transform var(--transition);
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  background: var(--bg-card);
}
.faq-a-inner {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.75;
}
.faq-a-inner p + p { margin-top: 0.75rem; }
.faq-a-inner code {
  word-break: break-all;
  overflow-wrap: break-word;
}

/* ── Pricing ───────────────────────────────────────────────────────────────── */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1.25rem;
  margin-bottom: 0.5rem;
}
.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: border-color var(--transition), transform var(--transition);
  position: relative;
}
.price-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.price-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 8px 32px rgba(200,16,46,0.10);
}
.price-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 12px;
  border-radius: 99px;
  white-space: nowrap;
}
.price-card h3 { color: var(--text); font-size: 1.1rem; }
.price-amount {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}
.price-amount .amount {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text);
}
.price-amount .period { font-size: 0.9rem; color: var(--text-dim); }
.price-amount .sub    { font-size: 0.8rem; color: var(--text-dim); }
.price-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.price-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.price-features li::before {
  content: '✓';
  color: var(--green);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.price-features li.na::before { content: '×'; color: var(--text-dim); font-weight: 400; }
.price-card .btn { margin-top: auto; justify-content: center; }

/* ── Contact / Form ────────────────────────────────────────────────────────── */

#contact {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: none;
}
#contact .section-header { margin-bottom: 2.5rem; }
.contact-form {
  max-width: 540px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  padding: 0.65rem 0.9rem;
  transition: border-color var(--transition);
  outline: none;
  width: 100%;
  -webkit-appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(200,16,46,0.12);
}
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235a5a7a' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}
.form-group select option { background: var(--bg-card-alt); color: var(--text); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.form-submit .btn { padding: 0.75rem 2rem; }
.form-note {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ── Footer ────────────────────────────────────────────────────────────────── */

footer {
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-links a {
  font-size: 0.85rem;
  color: var(--text-dim);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--text-muted); }
.footer-copy {
  font-size: 0.8rem;
  color: var(--text-dim);
  width: 100%;
  text-align: center;
  margin-top: 0.5rem;
}

/* ── Scrollbar ─────────────────────────────────────────────────────────────── */

::-webkit-scrollbar       { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* ── Responsive ────────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .nav-links { display: none; }
  .form-row  { grid-template-columns: 1fr; }
  section    { padding: 3.5rem 0; }
  .steps     { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
}