/* PulseKit — SaaS / Analytics Product HTML5 Template
   Structured-corporate design language: one brand color, no gradients, no decorative icon
   glyphs, sharp edges. Vanilla CSS, no build step. */

:root {
  --font-heading: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;

  --c-bg: #ffffff;
  --c-bg-alt: #f4f6f8;
  --c-surface: #ffffff;
  --c-border: #dfe3e9;
  --c-text: #0f131c;
  --c-text-muted: #545b6b;
  --c-text-faint: #868da0;

  /* One brand color, used everywhere. */
  --c-primary: #2554c7;
  --c-primary-dark: #1c3f99;
  --c-primary-contrast: #ffffff;
  --c-positive: #1a7f5a;
  --c-negative: #b3402f;

  --shadow-sm: 0 1px 2px rgba(15, 19, 28, 0.05);
  --shadow-md: 0 4px 16px rgba(15, 19, 28, 0.07);

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 6px;
  --header-h: 72px;
  --container-w: 1200px;
}

[data-theme="dark"] {
  --c-bg: #0b0d12;
  --c-bg-alt: #12151d;
  --c-surface: #151922;
  --c-border: #262b37;
  --c-text: #f0f2f7;
  --c-text-muted: #a1a7b8;
  --c-text-faint: #6b7182;
  --c-primary: #5b84e0;
  --c-primary-dark: #7ba0ee;
  --c-positive: #3fb885;
  --c-negative: #e17263;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--c-text); background: var(--c-bg); line-height: 1.6; -webkit-font-smoothing: antialiased; transition: background-color 0.25s ease, color 0.25s ease; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 700; line-height: 1.16; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.2rem, 4.6vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
h3 { font-size: 1.1rem; }
p { color: var(--c-text-muted); }
.container { width: 100%; max-width: var(--container-w); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; }

[data-reveal] { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-family: var(--font-heading); font-weight: 600; font-size: 0.94rem; padding: 13px 26px; border-radius: var(--radius-sm); border: 1px solid transparent; cursor: pointer; transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease; white-space: nowrap; }
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); }
.btn-outline { background: transparent; color: var(--c-text); border-color: var(--c-border); }
.btn-outline:hover { border-color: var(--c-primary); color: var(--c-primary); }
.btn-ghost { background: transparent; color: var(--c-text-muted); }
.btn-ghost:hover { color: var(--c-text); }
.btn-lg { padding: 16px 30px; font-size: 1rem; }
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }
.btn-block { width: 100%; }

.eyebrow { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-heading); font-weight: 700; font-size: 0.76rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--c-primary); margin-bottom: 14px; }
.highlight { color: var(--c-primary); }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 100; height: var(--header-h); background: color-mix(in srgb, var(--c-bg) 92%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid var(--c-border); }
.header-inner { position: relative; height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-heading); font-size: 1.2rem; font-weight: 700; }
.logo-mark { width: 24px; height: 24px; border-radius: var(--radius-sm); background: var(--c-primary); }
.main-nav { display: flex; align-items: center; gap: 28px; font-size: 0.92rem; font-weight: 500; }
.main-nav a { color: var(--c-text-muted); transition: color 0.15s ease; }
.main-nav a:hover { color: var(--c-text); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-signin { display: inline-flex; }
.theme-toggle { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: var(--radius-sm); border: 1px solid var(--c-border); background: var(--c-surface); cursor: pointer; color: var(--c-text-muted); }
.theme-toggle svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 36px; height: 36px; border: none; background: none; cursor: pointer; align-items: center; justify-content: center; }
.nav-toggle span { width: 20px; height: 2px; background: var(--c-text); }

/* ---------- Hero ---------- */
.hero { padding: 84px 0 60px; }
.hero-inner { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; }
.hero-badge { display: inline-block; font-size: 0.82rem; font-weight: 600; padding: 7px 14px; border-radius: var(--radius-sm); border: 1px solid var(--c-border); margin-bottom: 22px; color: var(--c-text-muted); }
.hero-copy p.lead { font-size: 1.1rem; margin: 20px 0 30px; max-width: 480px; }
.hero-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.hero-note { font-size: 0.82rem; color: var(--c-text-faint); }

.hero-visual { display: flex; flex-direction: column; gap: 12px; }
.browser-mock { border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--c-border); background: var(--c-surface); box-shadow: var(--shadow-md); }
.browser-bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--c-border); background: var(--c-bg-alt); }
.browser-bar .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-border); }
.browser-url { margin-left: 12px; font-size: 0.75rem; color: var(--c-text-faint); background: var(--c-bg); padding: 4px 10px; border-radius: var(--radius-sm); }
.browser-body { display: grid; grid-template-columns: 80px 1fr; min-height: 260px; }
.mock-sidebar { background: var(--c-bg-alt); border-right: 1px solid var(--c-border); padding: 16px 12px; display: flex; flex-direction: column; gap: 10px; }
.mock-pill { height: 8px; border-radius: 100px; background: var(--c-border); }
.mock-pill.w60 { width: 60%; } .mock-pill.w50 { width: 50%; } .mock-pill.w45 { width: 45%; } .mock-pill.w40 { width: 40%; }
.mock-pill.active { background: var(--c-primary); }
.mock-main { padding: 18px; }
.mock-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.mock-kpi { background: var(--c-bg-alt); border: 1px solid var(--c-border); border-radius: var(--radius-sm); padding: 10px 12px; display: flex; flex-direction: column; gap: 2px; }
.k-label { font-size: 0.68rem; color: var(--c-text-faint); }
.k-value { font-family: var(--font-heading); font-weight: 700; font-size: 1.05rem; }
.k-delta { font-size: 0.7rem; font-weight: 600; }
.k-delta.up { color: var(--c-positive); }
.k-delta.down { color: var(--c-negative); }
.mock-chart { background: var(--c-bg-alt); border: 1px solid var(--c-border); border-radius: var(--radius-sm); padding: 12px; }
.mock-chart svg { width: 100%; height: 90px; }
.chart-line { fill: none; stroke: var(--c-primary); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.hero-note-row { display: flex; gap: 10px; flex-wrap: wrap; }
.note-item { font-size: 0.78rem; font-weight: 600; color: var(--c-text-muted); border: 1px solid var(--c-border); border-radius: var(--radius-sm); padding: 8px 14px; }

/* ---------- Logo strip ---------- */
.logo-strip { padding: 36px 0; border-top: 1px solid var(--c-border); border-bottom: 1px solid var(--c-border); }
.logo-strip-label { text-align: center; font-size: 0.78rem; color: var(--c-text-faint); margin-bottom: 20px; text-transform: uppercase; letter-spacing: 0.06em; }
.logo-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 44px; }
.wordmark { font-family: var(--font-heading); font-weight: 700; font-size: 1.05rem; color: var(--c-text-faint); }

/* ---------- Sections ---------- */
.section { padding: 92px 0; }
.section-alt { background: var(--c-bg-alt); }
.section-head { max-width: 620px; margin: 0 auto 50px; text-align: center; }
.section-head h2 { margin-bottom: 12px; }

/* ---------- Product tabs ---------- */
.product-tabs { display: grid; gap: 0; }
.tab-buttons { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--c-border); border-bottom: none; }
.tab-btn { display: flex; flex-direction: column; gap: 2px; text-align: left; background: var(--c-surface); border: none; border-right: 1px solid var(--c-border); padding: 16px 18px; cursor: pointer; font-family: var(--font-body); }
.tab-btn:last-child { border-right: none; }
.tab-btn strong { display: block; font-family: var(--font-heading); font-size: 0.92rem; color: var(--c-text); }
.tab-btn small { display: block; font-size: 0.76rem; color: var(--c-text-faint); margin-top: 2px; }
.tab-btn.is-active { box-shadow: inset 0 -2px 0 var(--c-primary); background: var(--c-bg-alt); }
.tab-panels { position: relative; }
.tab-panel { display: none; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; background: var(--c-surface); border: 1px solid var(--c-border); padding: 40px; }
.tab-panel.is-active { display: grid; }
.panel-copy h3 { margin-bottom: 12px; }
.panel-copy p { margin-bottom: 18px; }
.panel-list li { position: relative; padding-left: 18px; font-size: 0.9rem; color: var(--c-text-muted); margin-bottom: 10px; }
.panel-list li::before { content: "—"; position: absolute; left: 0; color: var(--c-primary); }
.panel-visual { border: 1px solid var(--c-border); background: var(--c-bg-alt); border-radius: var(--radius-sm); height: 220px; display: flex; align-items: center; justify-content: center; }
.panel-visual-label { font-weight: 600; font-family: var(--font-heading); font-size: 0.85rem; color: var(--c-text-faint); text-transform: uppercase; letter-spacing: 0.05em; }

/* ---------- Feature grid — numbered, no icon glyphs ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--c-border); border: 1px solid var(--c-border); }
.feature-card { background: var(--c-surface); padding: 28px; }
.feature-index { display: block; font-family: var(--font-heading); font-size: 0.85rem; font-weight: 700; color: var(--c-primary); margin-bottom: 16px; }
.feature-card h3 { margin-bottom: 8px; }
.feature-card p { font-size: 0.9rem; }

/* ---------- Stats ---------- */
.stats-band { background: var(--c-primary); padding: 54px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; color: #fff; }
.stat-num, .stat-suffix { font-family: var(--font-heading); font-size: 2.3rem; font-weight: 700; }
.stat-label { display: block; margin-top: 6px; font-size: 0.84rem; color: rgba(255,255,255,0.8); }

/* ---------- Integrations ---------- */
.integration-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--c-border); border: 1px solid var(--c-border); }
.integration-card { display: flex; align-items: center; justify-content: center; padding: 26px 16px; background: var(--c-surface); font-weight: 600; font-family: var(--font-heading); font-size: 0.92rem; color: var(--c-text-muted); }

/* ---------- Testimonials ---------- */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.testimonial-card { background: var(--c-surface); border: 1px solid var(--c-border); padding: 26px; }
.testimonial-card p { color: var(--c-text); font-size: 0.96rem; margin-bottom: 18px; }
.testimonial-card footer { display: flex; align-items: center; gap: 12px; }
.testimonial-card footer div { display: flex; flex-direction: column; font-size: 0.85rem; }
.testimonial-card footer strong { color: var(--c-text); }
.testimonial-card footer span { color: var(--c-text-faint); font-size: 0.78rem; }
.avatar { width: 34px; height: 34px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; background: var(--c-primary); color: #fff; font-size: 0.7rem; font-weight: 700; font-family: var(--font-heading); flex-shrink: 0; }

/* ---------- Billing toggle ---------- */
.billing-toggle { display: flex; align-items: center; justify-content: center; gap: 14px; margin-bottom: 40px; }
.toggle-label { font-size: 0.92rem; font-weight: 600; color: var(--c-text-faint); }
.toggle-label.is-active { color: var(--c-text); }
.save-badge { display: inline-block; margin-left: 6px; font-size: 0.7rem; font-weight: 700; color: var(--c-positive); border: 1px solid var(--c-border); padding: 2px 8px; border-radius: var(--radius-sm); }
.toggle-switch { position: relative; width: 46px; height: 24px; border-radius: 100px; border: 1px solid var(--c-border); background: var(--c-bg-alt); cursor: pointer; transition: background-color 0.2s ease; }
.toggle-switch.is-annual { background: var(--c-primary); border-color: var(--c-primary); }
.toggle-knob { position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: #fff; transition: transform 0.2s ease; box-shadow: 0 1px 3px rgba(0,0,0,0.3); }
.toggle-switch.is-annual .toggle-knob { transform: translateX(22px); }

/* ---------- Pricing ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.price-card { position: relative; background: var(--c-surface); border: 1px solid var(--c-border); padding: 34px 28px; display: flex; flex-direction: column; }
.price-card.featured { border: 2px solid var(--c-primary); }
.price-badge { position: absolute; top: -13px; left: 28px; background: var(--c-primary); color: #fff; font-size: 0.7rem; font-weight: 700; padding: 5px 12px; border-radius: var(--radius-sm); }
.price-desc { font-size: 0.87rem; margin: 8px 0 20px; }
.price { margin-bottom: 22px; display: flex; align-items: baseline; gap: 4px; }
.price-amount { font-family: var(--font-heading); font-size: 2.1rem; font-weight: 700; color: var(--c-text); }
.price-period { font-size: 0.85rem; color: var(--c-text-faint); }
.price-features { flex: 1; margin-bottom: 26px; }
.price-features li { position: relative; padding-left: 18px; font-size: 0.88rem; color: var(--c-text-muted); margin-bottom: 11px; }
.price-features li::before { content: "—"; position: absolute; left: 0; color: var(--c-primary); }

/* ---------- FAQ ---------- */
.faq-list { display: flex; flex-direction: column; gap: 1px; background: var(--c-border); border: 1px solid var(--c-border); }
.faq-item { background: var(--c-surface); padding: 18px 22px; }
.faq-item summary { cursor: pointer; font-weight: 600; font-family: var(--font-heading); list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.2rem; color: var(--c-primary); }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { margin-top: 12px; font-size: 0.92rem; }

/* ---------- CTA ---------- */
.cta-band { padding: 84px 0; text-align: center; background: var(--c-bg-alt); }
.cta-inner { max-width: 600px; margin: 0 auto; }
.cta-inner h2 { margin-bottom: 12px; }
.cta-inner p { margin-bottom: 28px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--c-bg-alt); border-top: 1px solid var(--c-border); padding-top: 60px; }
.footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 40px; padding-bottom: 44px; }
.footer-brand p { margin: 16px 0 18px; font-size: 0.87rem; max-width: 280px; }
.social-row { display: flex; gap: 10px; }
.social-row a { width: 32px; height: 32px; border-radius: var(--radius-sm); border: 1px solid var(--c-border); display: flex; align-items: center; justify-content: center; font-size: 0.72rem; font-weight: 700; color: var(--c-text-muted); }
.footer-col h4 { font-size: 0.85rem; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 0.87rem; color: var(--c-text-muted); margin-bottom: 12px; }
.newsletter-form { display: flex; gap: 8px; }
.newsletter-form input { flex: 1; min-width: 0; padding: 10px 14px; border-radius: var(--radius-sm); border: 1px solid var(--c-border); background: var(--c-bg); color: var(--c-text); font-size: 0.85rem; }
.footer-bottom { border-top: 1px solid var(--c-border); padding: 20px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--c-text-faint); }

/* ---------- Back to top ---------- */
.back-to-top { position: fixed; bottom: 24px; right: 24px; width: 42px; height: 42px; border-radius: var(--radius-sm); background: var(--c-primary); color: #fff; border: none; font-size: 1.1rem; cursor: pointer; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: opacity 0.25s ease; z-index: 90; }
.back-to-top.is-visible { opacity: 1; pointer-events: auto; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid, .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .integration-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .tab-buttons { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .main-nav { position: absolute; top: 100%; left: 0; right: 0; background: var(--c-bg); border-bottom: 1px solid var(--c-border); flex-direction: column; align-items: flex-start; padding: 20px 24px; gap: 18px; visibility: hidden; opacity: 0; pointer-events: none; transform: translateY(-8px); transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s; }
  .main-nav.is-open { visibility: visible; opacity: 1; pointer-events: auto; transform: translateY(0); }
  .nav-toggle { display: flex; }
  .nav-signin { display: none; }
  .tab-panel { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
}
@media (max-width: 620px) {
  .feature-grid, .testimonial-grid, .pricing-grid, .integration-grid, .tab-buttons { grid-template-columns: 1fr; }
  .tab-btn { border-right: none; border-bottom: 1px solid var(--c-border); }
  .footer-inner { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
}

/* Footer credit logo (added) */
.template-credit { display: flex; align-items: center; gap: 6px; }
.template-credit .credit-logo { height: 16px; width: auto; }
.template-credit a { text-decoration: underline; text-underline-offset: 2px; }

/* ---------- Sticky book/contact bar (added) ---------- */
.sticky-cta {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 95;
  background: var(--c-primary-dark); border-top: 1px solid rgba(255, 255, 255, 0.12);
  transform: translateY(100%); transition: transform 0.3s ease;
}
.sticky-cta.is-visible { transform: translateY(0); }
.sticky-cta-inner {
  max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 14px 24px;
}
.sticky-cta-text { color: #fff; font-size: 0.92rem; }
.sticky-cta-text strong { display: block; font-size: 1rem; margin-bottom: 2px; }
.sticky-cta-text span { color: rgba(255, 255, 255, 0.68); }
.sticky-cta-btn {
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
  background: #fff; color: var(--c-primary-dark); font-weight: 600; font-size: 0.9rem;
  padding: 10px 20px; border-radius: 4px; white-space: nowrap; transition: background-color 0.15s ease;
}
.sticky-cta-btn:hover { background: rgba(255, 255, 255, 0.88); }
@media (max-width: 640px) {
  .sticky-cta-text span { display: none; }
}