/*
  Samwada marketing site — design tokens + component styles.
  Palette: white background with a single blue signal accent.
*/

:root {
  /* Color */
  --bg: #FFFFFF;
  --bg-grid: rgba(30, 64, 175, 0.05);
  --panel: #F5F8FF;
  --panel-2: #EAF1FE;
  --signal: #2563EB;
  --signal-strong: #1D4ED8;
  --signal-dim: rgba(37, 99, 235, 0.10);
  --amber: #F2A65A;
  --text: #0F172A;
  --muted: rgba(15, 23, 42, 0.62);
  --muted-2: rgba(15, 23, 42, 0.42);
  --line: rgba(15, 23, 42, 0.12);
  --danger: #DC2626;
  --focus: #1D4ED8;

  /* Type */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;

  /* Scale */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --container: 1160px;
  --nav-h: 76px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --speed-fast: 150ms;
  --speed-mid: 250ms;

  color-scheme: light;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(37, 99, 235, 0.06), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3 {
  font-family: var(--font-display);
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.01em;
}
p { margin: 0; }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* Consistent, visible keyboard focus without adding a ring to mouse clicks */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  background: var(--signal);
  color: #FFFFFF;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  z-index: 100;
  transition: top var(--speed-fast) var(--ease);
}
.skip-link:focus { top: 12px; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

/* ---------- Layout helpers ---------- */
.wrap { max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.center { text-align: center; }
.prose { max-width: 60ch; margin-left: auto; margin-right: auto; }

section[id] { scroll-margin-top: var(--nav-h); }

/* ---------- Nav ---------- */
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow var(--speed-mid);
}
nav .bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  max-width: var(--container);
  margin: 0 auto;
  min-height: var(--nav-h);
}
.brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.brand .brand-logo {
  height: 32px;
  width: auto;
  display: block;
  flex-shrink: 0;
}
.navlinks { display: flex; gap: 30px; align-items: center; font-size: 0.94rem; }
.navlinks a { text-decoration: none; color: var(--muted); transition: color var(--speed-fast); }
.navlinks a:hover { color: var(--text); }
.navlinks a.navcta {
  background: var(--signal);
  color: #FFFFFF;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background-color var(--speed-fast), transform var(--speed-fast);
}
.navlinks a.navcta:hover { background-color: var(--signal-strong); color: #FFFFFF; }
.navcta:active { transform: translateY(1px); }

.menubtn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text);
  padding: 8px;
  border-radius: var(--radius-sm);
}
.menubtn svg { width: 22px; height: 22px; }
.menubtn .icon-close { display: none; }
.menubtn[aria-expanded="true"] .icon-open { display: none; }
.menubtn[aria-expanded="true"] .icon-close { display: block; }

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--signal);
  color: #FFFFFF;
  padding: 15px 28px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  border: none;
  cursor: pointer;
  transition: background-color var(--speed-fast), transform var(--speed-fast);
}
.btn-primary:hover { background-color: var(--signal-strong); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 28px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid var(--line);
  color: var(--text);
  background: transparent;
  transition: border-color var(--speed-fast), background-color var(--speed-fast);
}
.btn-ghost:hover { border-color: var(--signal); background-color: var(--signal-dim); }

/* ---------- Hero ---------- */
.hero {
  padding: 120px 0 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center top;
  -webkit-mask-image: linear-gradient(to bottom, black, transparent 95%);
  mask-image: linear-gradient(to bottom, black, transparent 95%);
}
.hero-inner { position: relative; z-index: 1; }
.hero .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--signal);
  border: 1px solid rgba(37, 99, 235, 0.35);
  background: var(--signal-dim);
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 26px;
}
.hero .badge .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--signal);
}
.hero h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); line-height: 1.08; max-width: 16ch; margin: 0 auto; }
.hero p.lede { margin: 26px auto 0; font-size: 1.15rem; color: var(--muted); max-width: 48ch; }
.hero .ctas { margin-top: 38px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero .microcopy { margin-top: 16px; font-size: 0.85rem; color: var(--muted-2); }

.waveform {
  margin: 64px auto 0;
  height: 96px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  max-width: 520px;
}
.waveform span {
  width: 4px;
  background: var(--signal);
  border-radius: 2px;
  opacity: 0.55;
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scaleY(0.3); opacity: 0.35; }
  50% { transform: scaleY(1); opacity: 0.9; }
}

/* ---------- Stat strip ---------- */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 40px 0; background: var(--panel); }
.strip-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; text-align: center; }
.strip-item .num { font-family: var(--font-display); font-size: 1.9rem; font-weight: 700; color: var(--signal); }
.strip-item .label { color: var(--muted); font-size: 0.92rem; margin-top: 6px; }

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section + .section, .section[style] { }
.section-divider { border-top: 1px solid var(--line); }
.kicker { font-size: 0.85rem; color: var(--signal); font-weight: 600; margin-bottom: 14px; letter-spacing: 0.02em; text-transform: uppercase; }
.section h2 { font-size: clamp(1.7rem, 3vw, 2.1rem); max-width: 20ch; }
.section > .wrap > p.prose { color: var(--muted); margin-top: 16px; font-size: 1.05rem; }

/* ---------- Use cases ---------- */
.usecase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 44px;
}
.usecase { background: var(--panel); padding: 34px; transition: background var(--speed-mid); }
.usecase:hover { background: var(--panel-2); }
.usecase h3 { font-size: 1.2rem; margin-bottom: 10px; }
.usecase p { color: var(--muted); font-size: 0.96rem; margin: 0 0 16px; }
.taglist { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.taglist span { font-size: 0.82rem; padding: 5px 12px; border: 1px solid var(--line); border-radius: 16px; color: var(--muted); }

/* ---------- Features ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 44px;
}
.feature { background: var(--panel); padding: 30px 26px; transition: background var(--speed-mid); }
.feature:hover { background: var(--panel-2); }
.feature .mark {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--signal-dim);
  display: flex; align-items: center; justify-content: center;
  color: var(--signal); margin-bottom: 18px;
}
.feature .mark svg { width: 18px; height: 18px; }
.feature h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feature p { font-size: 0.9rem; color: var(--muted); margin: 0; }

/* ---------- Trust / security ---------- */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 44px;
}
.trust-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
  background: var(--panel);
}
.trust-item .mark {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--signal-dim); color: var(--signal);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.trust-item .mark svg { width: 18px; height: 18px; }
.trust-item h3 { font-size: 1.02rem; margin-bottom: 8px; }
.trust-item p { font-size: 0.9rem; color: var(--muted); }

/* ---------- Pills ---------- */
.pill-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; justify-content: center; list-style: none; padding: 0; }
.pill { border: 1px solid var(--line); padding: 10px 20px; border-radius: 24px; font-size: 0.94rem; background: var(--panel); }

/* ---------- Pricing ---------- */
.pricing-wrap {
  margin-top: 44px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 36px;
  align-items: center;
}
.pricing-side h3 { font-size: 1.3rem; margin-bottom: 12px; }
.pricing-side p { color: var(--muted); font-size: 0.94rem; }
.pricing-mid { text-align: center; padding: 0 20px; border-left: 1px solid var(--line); border-right: 1px solid var(--line); }
.pricing-mid .rate { font-family: var(--font-display); font-size: 2.6rem; font-weight: 700; color: var(--signal); }
.pricing-mid .rateunit { color: var(--muted); font-size: 0.9rem; margin-top: 4px; }
.pricing-mid .btn-primary { display: inline-flex; margin-top: 22px; }
.pricing-note { margin-top: 20px; font-size: 0.85rem; color: var(--muted-2); }

/* ---------- FAQ ---------- */
.faq-item { border-top: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-weight: 600;
  font-size: 1.02rem;
  padding: 22px 0;
  background: none;
  border: none;
  color: inherit;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}
.faq-q .plus { color: var(--signal); font-size: 1.3rem; transition: transform var(--speed-mid); flex-shrink: 0; }
.faq-item[data-open="true"] .plus { transform: rotate(45deg); }
.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--speed-mid) var(--ease);
  color: var(--muted);
  font-size: 0.94rem;
}
.faq-item[data-open="true"] .faq-a { grid-template-rows: 1fr; }
.faq-a > div { overflow: hidden; }
.faq-a p { padding-bottom: 22px; }

/* ---------- CTA / contact ---------- */
.cta-block {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
}
.cta-block h2 { font-size: clamp(1.7rem, 3vw, 2.1rem); max-width: 18ch; margin: 0 auto; }
.cta-block p { color: var(--muted); margin: 16px auto 0; max-width: 42ch; }

.contact-form {
  margin-top: 32px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  text-align: left;
}
.form-row { display: flex; flex-wrap: wrap; gap: 12px; }
.form-field { flex: 1; min-width: 180px; display: flex; flex-direction: column; gap: 6px; }
.form-field label { font-size: 0.82rem; color: var(--muted); }
.contact-form input {
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 13px 14px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.94rem;
  width: 100%;
  transition: border-color var(--speed-fast);
}
.contact-form input:focus-visible { border-color: var(--signal); }
.contact-form input::placeholder { color: var(--muted-2); }
.contact-form input[aria-invalid="true"] { border-color: var(--danger); }
.field-error {
  font-size: 0.8rem;
  color: var(--danger);
  min-height: 1em;
}
.contact-form .submit-row { margin-top: 6px; display: flex; justify-content: center; }
.form-status {
  margin-top: 18px;
  font-size: 0.92rem;
  text-align: center;
  min-height: 1.4em;
}
.form-status[data-state="success"] { color: var(--signal); }
.form-status[data-state="error"] { color: var(--danger); }

/* honeypot field — hidden from sighted users and hidden from AT, bots still fill it in */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
  font-size: 0.86rem;
  color: var(--muted);
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { text-decoration: none; color: var(--muted); transition: color var(--speed-fast); }
.footer-links a:hover { color: var(--text); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .navlinks {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    padding: 18px 32px 26px;
    gap: 18px;
  }
  .navlinks[data-open="true"] { display: flex; }
  .navlinks .navcta { align-self: flex-start; }
  .menubtn { display: block; }
  .hero { padding-top: 96px; }
  .strip-grid { grid-template-columns: 1fr; gap: 28px; }
  .usecase-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .pricing-wrap { grid-template-columns: 1fr; padding: 32px; }
  .pricing-mid { border-left: none; border-right: none; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 24px 0; }
  .cta-block { padding: 40px 24px; }
  .footer-grid { flex-direction: column; }
}

@media (max-width: 480px) {
  .wrap { padding: 0 20px; }
  .feature-grid { grid-template-columns: 1fr; }
}