/* ==========================================================================
   StackForge — design system
   ========================================================================== */

:root {
  --bg: #05070c;
  --bg-alt: #0a0e17;
  --surface: #10141f;
  --surface-2: #151a28;
  --border: #212838;
  --border-soft: #1a2030;
  --text: #e8ebf3;
  --text-dim: #97a1b8;
  --text-faint: #616c86;
  --accent: #4f8bff;
  --accent-2: #7c5cff;
  --accent-cyan: #22d3ee;
  --success: #35d399;
  --radius: 14px;
  --radius-sm: 8px;
  --max: 1180px;
  --shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.55);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p { margin: 0; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

/* Background texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(79, 139, 255, 0.14), transparent 60%),
    radial-gradient(900px 500px at 5% 0%, rgba(124, 92, 255, 0.10), transparent 60%),
    var(--bg);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 24px -8px rgba(79, 139, 255, 0.55);
}
.btn-primary:hover { box-shadow: 0 12px 32px -8px rgba(79, 139, 255, 0.75); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: #fff; }

.btn-sm { padding: 9px 16px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 7, 12, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.brand-tag {
  display: block;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-faint);
  letter-spacing: 0.02em;
  margin-top: 1px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links > li { position: relative; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: color 0.15s ease, background 0.15s ease;
}
.nav-link:hover, .nav-link.active { color: #fff; background: var(--surface); }
.nav-link .chev { width: 10px; height: 10px; opacity: 0.7; transition: transform 0.15s ease; }
li.has-dropdown:hover .chev { transform: rotate(180deg); }

.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 300px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
  display: grid;
  gap: 2px;
}
li.has-dropdown:hover .dropdown,
li.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown a {
  display: flex;
  flex-direction: column;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}
.dropdown a small {
  font-weight: 400;
  color: var(--text-faint);
  font-size: 0.75rem;
  margin-top: 2px;
}
.dropdown a:hover { background: var(--surface-2); color: #fff; }

.nav-cta { display: flex; align-items: center; gap: 10px; }
.mobile-contact { display: none; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 42px;
  height: 42px;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* Mobile nav */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
  .mobile-contact { display: block; }

  .site-header.open .nav-links {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 10px 20px 20px;
    gap: 2px;
    max-height: calc(100vh - 76px);
    overflow-y: auto;
  }
  .site-header.open .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0 0 6px 14px;
  }
  .site-header.open li.has-dropdown.open .dropdown { display: grid; }
  .site-header.open .nav-cta {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    transform: translateY(calc(100% - 1px));
    display: none;
  }
}

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 72px;
  text-align: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 26px;
  font-family: var(--font-mono);
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 900px;
  margin: 0 auto;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-cyan) 60%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lead {
  max-width: 680px;
  margin: 22px auto 0;
  font-size: 1.15rem;
  color: var(--text-dim);
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 34px;
  flex-wrap: wrap;
}
.page-hero {
  padding: 64px 0 56px;
  text-align: left;
  border-bottom: 1px solid var(--border-soft);
}
.page-hero .eyebrow { margin-bottom: 18px; }
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  max-width: 760px;
}
.page-hero p.lead {
  max-width: 680px;
  margin: 18px 0 0;
  font-size: 1.08rem;
  color: var(--text-dim);
}

/* ---------- Sections ---------- */
section { padding: 72px 0; }
section.tight { padding: 48px 0; }
.section-head {
  max-width: 640px;
  margin-bottom: 44px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
  display: block;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.section-head p {
  margin-top: 14px;
  color: var(--text-dim);
  font-size: 1.02rem;
}
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }

/* ---------- Grids & Cards ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5, .grid-6 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4, .grid-5, .grid-6 { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: #2b3550; }
.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 18px;
}
.card h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.01em; }
.card p { color: var(--text-dim); font-size: 0.95rem; }
.card ul { margin-top: 14px; display: grid; gap: 8px; }
.card ul li {
  font-size: 0.88rem;
  color: var(--text-dim);
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.card ul li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 8px;
  flex-shrink: 0;
}

.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { text-align: center; }
.stat b { display: block; font-size: 2rem; font-weight: 800; color: #fff; }
.stat span { font-size: 0.85rem; color: var(--text-faint); }
@media (max-width: 640px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }

/* Tag / pill lists */
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  padding: 8px 15px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-dim);
  font-weight: 500;
}
.pill.pill-accent { color: var(--accent-cyan); border-color: rgba(34, 211, 238, 0.35); }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 480px; }
th, td { text-align: left; padding: 15px 20px; font-size: 0.92rem; }
thead th {
  background: var(--surface-2);
  color: var(--text-faint);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border);
}
tbody tr:not(:last-child) td { border-bottom: 1px solid var(--border-soft); }
tbody tr:nth-child(odd) { background: rgba(255, 255, 255, 0.012); }
td.old { color: var(--text-faint); text-decoration: line-through; }
td.new { color: var(--accent-cyan); font-weight: 600; }
td.price { text-align: right; font-family: var(--font-mono); color: #fff; font-weight: 600; }

/* ---------- Pricing ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
@media (max-width: 1080px) { .pricing-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .pricing-grid { grid-template-columns: 1fr; } }

.plan {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.plan.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(79, 139, 255, 0.08), var(--surface) 40%);
  box-shadow: 0 20px 50px -25px rgba(79, 139, 255, 0.6);
}
.plan-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}
.plan-name { font-weight: 700; font-size: 1rem; }
.plan-price { font-size: 2rem; font-weight: 800; margin: 12px 0 2px; letter-spacing: -0.02em; }
.plan-price span { font-size: 0.95rem; font-weight: 500; color: var(--text-faint); }
.plan-audience { font-size: 0.8rem; color: var(--text-faint); margin-bottom: 18px; }
.plan-features { display: grid; gap: 10px; margin: 6px 0 24px; flex-grow: 1; }
.plan-features li { font-size: 0.86rem; color: var(--text-dim); display: flex; gap: 8px; }
.plan-features li b { color: var(--text); font-weight: 600; }
.plan-features .check { color: var(--success); flex-shrink: 0; }

/* ---------- Comparison / logos strip ---------- */
.logo-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 34px;
  color: var(--text-faint);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

/* ---------- CTA banner ---------- */
.cta-banner {
  border-radius: 24px;
  border: 1px solid var(--border);
  background:
    radial-gradient(600px 260px at 15% 0%, rgba(79, 139, 255, 0.22), transparent 60%),
    radial-gradient(600px 260px at 85% 100%, rgba(124, 92, 255, 0.22), transparent 60%),
    var(--surface);
  padding: 56px 48px;
  text-align: center;
}
.cta-banner h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; letter-spacing: -0.02em; }
.cta-banner p { color: var(--text-dim); margin-top: 12px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-banner .hero-actions { margin-top: 28px; }

/* ---------- Timeline / roadmap ---------- */
.timeline { display: grid; gap: 14px; }
.timeline-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.timeline-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent-cyan);
  margin-top: 6px;
  flex-shrink: 0;
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
}

/* ---------- SLA ---------- */
.sla-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 800px) { .sla-grid { grid-template-columns: 1fr; } }
.sla-card { text-align: center; }
.sla-card .plan-name { font-size: 1.1rem; margin-bottom: 14px; }

/* ---------- Two column layout ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 32px; } }

/* ---------- Forms ---------- */
.form-grid { display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }
label { font-size: 0.85rem; font-weight: 600; color: var(--text-dim); display: block; margin-bottom: 8px; }
input, select, textarea {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.94rem;
  transition: border-color 0.15s ease;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 0.8rem; color: var(--text-faint); margin-top: 14px; }
#form-status {
  display: none;
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: rgba(53, 211, 153, 0.1);
  border: 1px solid rgba(53, 211, 153, 0.35);
  color: var(--success);
  font-size: 0.9rem;
  font-weight: 600;
}

/* ---------- Contact info cards ---------- */
.contact-info { display: grid; gap: 14px; }
.contact-info .card { display: flex; align-items: center; gap: 16px; padding: 20px; }
.contact-info .card-icon { margin-bottom: 0; }
.contact-info a.value { color: var(--accent-cyan); font-weight: 600; font-size: 0.95rem; }
.contact-info .label { font-size: 0.8rem; color: var(--text-faint); margin-bottom: 3px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border-soft); padding: 64px 0 28px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 44px;
}
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-faint); margin-bottom: 16px; }
.footer-grid ul { display: grid; gap: 10px; }
.footer-grid a { color: var(--text-dim); font-size: 0.92rem; }
.footer-grid a:hover { color: #fff; }
.footer-brand p { color: var(--text-dim); font-size: 0.92rem; margin-top: 14px; max-width: 280px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  border-top: 1px solid var(--border-soft);
  color: var(--text-faint);
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Misc utility ---------- */
.mt-0 { margin-top: 0; }
.center { text-align: center; }
.badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.icon { width: 22px; height: 22px; }
.divider { height: 1px; background: var(--border-soft); border: none; margin: 0; }

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-faint);
  margin-bottom: 20px;
}
.breadcrumb a:hover { color: var(--accent-cyan); }

.two-col-list { columns: 2; gap: 40px; }
.two-col-list li { break-inside: avoid; margin-bottom: 10px; font-size: 0.92rem; color: var(--text-dim); display: flex; gap: 8px; }
.two-col-list li::before { content: "›"; color: var(--accent); font-weight: 700; }
@media (max-width: 640px) { .two-col-list { columns: 1; } }