/* ================================================================
   Datatrixs Design System — dx-design.css
   Dark, premium B2B SaaS marketing site
   Primary: #00FF85 (teal-green)  |  Accent: #F59E0B (amber/AI)
   ================================================================ */

:root {
  --bg-base:     #09090B;
  --bg-surface:  #111118;
  --bg-elevated: #18181F;
  --border:      rgba(255,255,255,0.07);
  --border-sub:  rgba(255,255,255,0.04);
  --primary:         #00FF85;
  --primary-hover:   #00E077;
  --primary-glow:    rgba(0,255,133,0.10);
  --primary-border:  rgba(0,255,133,0.22);
  --amber:           #F59E0B;
  --amber-glow:      rgba(245,158,11,0.10);
  --amber-border:    rgba(245,158,11,0.25);
  --text-1: #FAFAFA;
  --text-2: #A1A1AA;
  --text-3: #52525B;
  --radius:    12px;
  --radius-sm: 8px;
}

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

body {
  background-color: var(--bg-base);
  color: var(--text-1);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

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

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section    { padding: 96px 0; }
.divider    { height: 1px; background: var(--border); }

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

.text-gradient {
  background: linear-gradient(130deg, #00FF85 0%, #00C9FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Navigation ─────────────────────────────────────────────── */

.nav-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: rgba(9,9,11,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1160px; margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center;
  justify-content: space-between; gap: 24px;
}

.nav-logo img { height: 22px; display: block; }

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }

.nav-links a {
  color: var(--text-2); text-decoration: none;
  font-size: 14px; font-weight: 500;
  padding: 6px 11px; border-radius: var(--radius-sm);
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--text-1); background: rgba(255,255,255,0.05); }

.nav-actions { display: flex; align-items: center; gap: 8px; }

.nav-login {
  color: var(--text-2); text-decoration: none;
  font-size: 14px; font-weight: 500;
  padding: 6px 12px; border-radius: var(--radius-sm);
  transition: color .15s;
}
.nav-login:hover { color: var(--text-1); }

.nav-cta {
  background: var(--primary); color: #000;
  text-decoration: none; font-size: 14px; font-weight: 600;
  padding: 8px 16px; border-radius: var(--radius-sm);
  transition: background .15s, transform .1s; display: inline-block;
}
.nav-cta:hover { background: var(--primary-hover); transform: translateY(-1px); }

.nav-mobile-btn {
  background: none; border: none; cursor: pointer;
  color: var(--text-1); padding: 6px; display: none;
}

/* ── Buttons ─────────────────────────────────────────────────── */

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  text-decoration: none; font-size: 15px; font-weight: 600;
  padding: 12px 22px; border-radius: var(--radius-sm);
  transition: all .15s; cursor: pointer; border: none;
  white-space: nowrap; font-family: 'Inter', sans-serif;
}

.btn-primary { background: var(--primary); color: #000; }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }

.btn-secondary {
  background: transparent; color: var(--text-1);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: rgba(255,255,255,0.15); background: rgba(255,255,255,0.04); }

.btn-lg { padding: 14px 28px; font-size: 16px; }

/* ── Labels / Badges ─────────────────────────────────────────── */

.label {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary-glow); border: 1px solid var(--primary-border);
  color: var(--primary); font-size: 12px; font-weight: 600;
  letter-spacing: 0.07em; text-transform: uppercase;
  padding: 4px 12px; border-radius: 100px;
}

.label-amber {
  background: var(--amber-glow); border-color: var(--amber-border); color: var(--amber);
}

/* ── Cards ───────────────────────────────────────────────────── */

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.card-elevated {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* ── Glow effects ────────────────────────────────────────────── */

.glow-primary {
  box-shadow:
    0 0 0 1px rgba(0,255,133,0.12),
    0 0 50px rgba(0,255,133,0.10),
    0 0 100px rgba(0,255,133,0.05);
}

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

.hero-bg {
  background:
    radial-gradient(ellipse 90% 60% at 50% -5%, rgba(0,255,133,0.07) 0%, transparent 70%),
    var(--bg-base);
}

.hero-grid {
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 20%, black 30%, transparent 100%);
  mask-image: radial-gradient(ellipse 90% 80% at 50% 20%, black 30%, transparent 100%);
}

/* ── Feature icon ────────────────────────────────────────────── */

.feature-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}

.fi-green { background: var(--primary-glow); border: 1px solid var(--primary-border); color: var(--primary); }
.fi-amber { background: var(--amber-glow);   border: 1px solid var(--amber-border);   color: var(--amber);   }
.fi-blue  { background: rgba(96,165,250,.1); border: 1px solid rgba(96,165,250,.2);   color: #60A5FA;        }
.fi-purple{ background: rgba(167,139,250,.1);border: 1px solid rgba(167,139,250,.2);  color: #A78BFA;        }

/* ── Integration badges ──────────────────────────────────────── */

.int-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 8px 14px;
  font-size: 13px; font-weight: 500; color: var(--text-2);
  transition: border-color .15s, color .15s;
}
.int-badge:hover { border-color: rgba(255,255,255,0.14); color: var(--text-1); }

/* ── Browser frame ───────────────────────────────────────────── */

.browser-frame {
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid rgba(255,255,255,0.09);
  box-shadow: 0 40px 80px rgba(0,0,0,0.55), 0 0 0 1px rgba(0,0,0,0.25);
}

.browser-chrome {
  background: #16161F; padding: 10px 16px;
  display: flex; align-items: center; gap: 7px;
  border-bottom: 1px solid var(--border);
}

.browser-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }

.browser-url {
  flex: 1; background: rgba(255,255,255,0.05);
  border-radius: 6px; padding: 4px 10px;
  font-size: 11px; color: var(--text-3);
  margin-left: 6px; white-space: nowrap; overflow: hidden;
}

/* ── Chat / AI UI ────────────────────────────────────────────── */

.chat-wrap {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.chat-head {
  background: var(--bg-elevated); border-bottom: 1px solid var(--border);
  padding: 12px 16px; display: flex; align-items: center; gap: 10px;
}

.chat-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--amber-glow); border: 1px solid var(--amber-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; flex-shrink: 0;
}

.chat-body { padding: 20px; display: flex; flex-direction: column; gap: 14px; max-height: 520px; overflow-y: auto; }

.chat-user {
  background: var(--primary-glow); border: 1px solid var(--primary-border);
  border-radius: 12px 12px 4px 12px;
  padding: 10px 14px; font-size: 14px; color: var(--text-1);
  align-self: flex-end; max-width: 85%;
}

.chat-ai {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 4px 12px 12px 12px;
  padding: 14px 16px; font-size: 13px; color: var(--text-1);
  align-self: flex-start; max-width: 96%;
}

.chat-table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 12px; }
.chat-table th {
  text-align: left; padding: 6px 10px; color: var(--text-3);
  font-weight: 500; border-bottom: 1px solid var(--border); white-space: nowrap;
}
.chat-table td { padding: 7px 10px; color: var(--text-2); border-bottom: 1px solid var(--border-sub); }
.chat-table tr:last-child td { border-bottom: none; }
.neg { color: #F87171; font-weight: 500; }
.pos { color: var(--primary); font-weight: 500; }
.neu { color: var(--text-2); }

.chat-footer {
  border-top: 1px solid var(--border); padding: 12px 16px;
  display: flex; align-items: center; gap: 8px;
}
.chat-input-mock {
  flex: 1; background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 8px 12px;
  font-size: 13px; color: var(--text-3); font-family: 'Inter', sans-serif;
}

/* ── Vertical tabs ───────────────────────────────────────────── */

.vtab-bar { display: flex; gap: 4px; flex-wrap: wrap; }

.vtab {
  padding: 8px 16px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; color: var(--text-2);
  cursor: pointer; border: 1px solid transparent;
  transition: all .15s; background: none; font-family: 'Inter', sans-serif;
}
.vtab:hover { color: var(--text-1); background: rgba(255,255,255,0.04); }
.vtab.active {
  background: var(--primary-glow); border-color: var(--primary-border); color: var(--primary);
}

.vtab-panel { display: none; }
.vtab-panel.active { display: block; }

/* ── KPI chip ────────────────────────────────────────────────── */

.kpi-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 8px 14px;
  font-size: 13px; font-weight: 500; color: var(--text-2);
}

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

.pricing-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
  transition: border-color .2s, transform .2s;
}
.pricing-card:hover { border-color: rgba(255,255,255,0.14); transform: translateY(-3px); }
.pricing-card.featured {
  border-color: var(--primary-border);
  background: linear-gradient(160deg, rgba(0,255,133,0.05) 0%, var(--bg-surface) 60%);
}

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

.form-label { display: block; font-size: 13px; font-weight: 500; color: var(--text-2); margin-bottom: 6px; }

.form-input, .form-select, .form-textarea {
  width: 100%; background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px 14px;
  font-size: 14px; color: var(--text-1); font-family: 'Inter', sans-serif;
  transition: border-color .15s; appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--primary-border);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-3); }
.form-textarea { resize: vertical; min-height: 100px; line-height: 1.6; }

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

.footer { border-top: 1px solid var(--border); padding: 64px 0 40px; }

/* ── Pulse dot ───────────────────────────────────────────────── */

.pulse-dot {
  position: relative; width: 8px; height: 8px;
  border-radius: 50%; background: var(--primary); flex-shrink: 0;
}
.pulse-dot::after {
  content: ''; position: absolute; inset: 0; border-radius: 50%;
  background: var(--primary);
  animation: pulse-ring 1.8s ease-out infinite;
}

@keyframes pulse-ring {
  0%   { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.5); opacity: 0; }
}

/* ── Scroll reveal ───────────────────────────────────────────── */

.reveal {
  opacity: 0; transform: translateY(22px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ── Mobile nav overlay ──────────────────────────────────────── */

.mobile-nav {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(9,9,11,0.97);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  display: none; flex-direction: column;
  align-items: center; justify-content: center; gap: 8px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: var(--text-1); text-decoration: none;
  font-size: 22px; font-weight: 600; padding: 12px 32px;
  border-radius: var(--radius);
  transition: background .15s;
}
.mobile-nav a:hover { background: rgba(255,255,255,0.05); }
.mobile-nav .close-btn {
  position: absolute; top: 20px; right: 24px;
  background: none; border: none; color: var(--text-2);
  cursor: pointer; font-size: 24px;
}

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

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .nav-links, .nav-actions { display: none; }
  .nav-mobile-btn { display: block; }
  .hide-mobile { display: none !important; }
  .mobile-stack { flex-direction: column !important; }
  .mobile-full { width: 100% !important; }
}

@media (min-width: 769px) {
  .show-mobile { display: none !important; }
}

/* ── Comparison table (pricing) ──────────────────────────────── */

.comp-table { width: 100%; border-collapse: collapse; }
.comp-table th {
  text-align: left; padding: 12px 16px;
  font-size: 13px; font-weight: 600; color: var(--text-2);
  border-bottom: 1px solid var(--border); background: var(--bg-elevated);
}
.comp-table th:first-child { border-radius: var(--radius-sm) 0 0 0; }
.comp-table th:last-child  { border-radius: 0 var(--radius-sm) 0 0; }
.comp-table td {
  padding: 12px 16px; font-size: 14px; color: var(--text-2);
  border-bottom: 1px solid var(--border-sub);
}
.comp-table tr:last-child td { border-bottom: none; }
.comp-table .check { color: var(--primary); }
.comp-table .dash  { color: var(--text-3); }

/* ── Integration page steps ──────────────────────────────────── */

.step-num {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--primary-glow); border: 1px solid var(--primary-border);
  color: var(--primary); font-size: 14px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}

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

.faq-item {
  border-bottom: 1px solid var(--border); padding: 20px 0; cursor: pointer;
}
.faq-item:last-child { border-bottom: none; }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 15px; font-weight: 500; color: var(--text-1);
}
.faq-a {
  font-size: 14px; color: var(--text-2); margin-top: 12px; line-height: 1.7;
  display: none;
}
.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-chevron { transition: transform .2s; color: var(--text-3); flex-shrink: 0; }

/* ── Blog index ──────────────────────────────────────────────── */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 900px) { .blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .blog-grid { grid-template-columns: 1fr; } }

.blog-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color .2s, transform .2s;
  text-decoration: none;
}
.blog-card:hover {
  border-color: var(--primary-border);
  transform: translateY(-2px);
}
.blog-card-tag {
  font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--primary); background: var(--primary-glow);
  border: 1px solid var(--primary-border);
  border-radius: 4px; padding: 2px 8px; display: inline-block; width: fit-content;
}
.blog-card-tag.amber {
  color: var(--amber); background: rgba(245,158,11,.08); border-color: rgba(245,158,11,.2);
}
.blog-card h3 {
  font-size: 16px; font-weight: 600; color: var(--text-1); line-height: 1.4; margin: 0;
}
.blog-card p {
  font-size: 14px; color: var(--text-2); line-height: 1.6; margin: 0; flex: 1;
}
.blog-card-meta {
  font-size: 12px; color: var(--text-3); margin-top: auto;
}
.blog-featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}
@media (max-width: 768px) { .blog-featured-grid { grid-template-columns: 1fr; } }
.blog-card.featured {
  border-color: var(--primary-border);
  background: linear-gradient(135deg, rgba(0,255,133,.04) 0%, var(--bg-surface) 60%);
}

/* ── Article page ────────────────────────────────────────────── */

.article-header {
  max-width: 760px; margin: 0 auto; padding: 60px 24px 40px;
}
.article-header .article-tag {
  font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--primary); background: var(--primary-glow);
  border: 1px solid var(--primary-border);
  border-radius: 4px; padding: 2px 8px; display: inline-block; margin-bottom: 16px;
}
.article-header h1 {
  font-size: clamp(26px, 4vw, 40px); font-weight: 800; color: var(--text-1);
  line-height: 1.2; margin-bottom: 16px;
}
.article-header .article-meta {
  font-size: 13px; color: var(--text-3); display: flex; gap: 16px; flex-wrap: wrap;
}
.article-body {
  max-width: 760px; margin: 0 auto; padding: 0 24px 80px;
}
.article-body h2 {
  font-size: 22px; font-weight: 700; color: var(--text-1);
  margin: 48px 0 16px; padding-top: 8px;
  border-top: 1px solid var(--border-sub);
}
.article-body h3 {
  font-size: 17px; font-weight: 600; color: var(--text-1); margin: 32px 0 12px;
}
.article-body p {
  font-size: 16px; color: var(--text-2); line-height: 1.8; margin-bottom: 20px;
}
.article-body ul, .article-body ol {
  padding-left: 24px; margin-bottom: 20px;
}
.article-body li {
  font-size: 16px; color: var(--text-2); line-height: 1.8; margin-bottom: 8px;
}
.article-body strong { color: var(--text-1); font-weight: 600; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body blockquote {
  border-left: 3px solid var(--primary);
  margin: 32px 0; padding: 16px 24px;
  background: var(--bg-surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 16px; color: var(--text-1); font-style: italic; line-height: 1.7;
}
.article-table {
  width: 100%; border-collapse: collapse; margin: 32px 0; font-size: 14px;
}
.article-table th {
  background: var(--bg-elevated); color: var(--text-1); font-weight: 600;
  padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border);
}
.article-table td {
  padding: 12px 16px; color: var(--text-2); border-bottom: 1px solid var(--border-sub);
}
.article-table tr:last-child td { border-bottom: none; }
.cta-box {
  background: linear-gradient(135deg, rgba(0,255,133,.06) 0%, var(--bg-elevated) 100%);
  border: 1px solid var(--primary-border);
  border-radius: var(--radius);
  padding: 32px; margin: 48px 0; text-align: center;
}
.cta-box h3 { font-size: 20px; font-weight: 700; color: var(--text-1); margin-bottom: 8px; }
.cta-box p  { font-size: 15px; color: var(--text-2); margin-bottom: 20px; }