/* SpeedCommerce — customer-facing design system.
 *
 * Served as a real stylesheet rather than inlined so it caches across pages.
 * Audience is Bangladeshi small-shop owners, so this leans trustworthy and
 * plain over fashionable: generous spacing, one accent colour, no animation
 * that could read as a page still loading on a slow connection.
 */

/* Bengali conjuncts and matras sit taller than Latin, so body copy gets a
 * little more leading than an English-only page would need. */
:root {
  --bg:        #f7f8fa;
  --surface:   #ffffff;
  --surface-2: #f2f4f7;
  --ink:       #101828;
  --ink-2:     #475467;
  --ink-3:     #98a2b3;
  --line:      #e4e7ec;
  --line-2:    #d0d5dd;

  --brand:     #1d4ed8;
  --brand-ink: #1e40af;
  --brand-bg:  #eff4ff;

  --ok:        #067647;
  --ok-bg:     #ecfdf3;
  --warn:      #b54708;
  --warn-bg:   #fffaeb;
  --bad:       #b42318;
  --bad-bg:    #fef3f2;

  --r-sm: 6px;
  --r:    10px;
  --r-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(16,24,40,.05);
  --shadow:    0 1px 3px rgba(16,24,40,.1), 0 1px 2px rgba(16,24,40,.06);
  --shadow-lg: 0 12px 32px -8px rgba(16,24,40,.14);

  --max: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0d1117;
    --surface:   #161b22;
    --surface-2: #1c2230;
    --ink:       #e6edf3;
    --ink-2:     #9aa5b1;
    --ink-3:     #6e7781;
    --line:      #262d38;
    --line-2:    #333c48;
    --brand:     #4c7dff;
    --brand-ink: #7aa0ff;
    --brand-bg:  #16203a;
    --ok-bg:     #0d2a1d;
    --warn-bg:   #2b2007;
    --bad-bg:    #2c1414;
    --shadow-sm: none;
    --shadow:    0 1px 3px rgba(0,0,0,.4);
    --shadow-lg: 0 12px 32px -8px rgba(0,0,0,.6);
  }
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hind Siliguri", "Noto Sans Bengali", "Nirmala UI", SolaimanLipi, "Kalpurush", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.25; letter-spacing: -0.018em; margin: 0; }
h1 { font-size: 30px; font-weight: 700; }
h2 { font-size: 19px; font-weight: 650; }
h3 { font-size: 15px; font-weight: 650; }
p  { margin: 0; }

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: .88em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: var(--r-sm);
}

/* ---------------------------------------------------------------- shell -- */

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.topbar-in {
  max-width: var(--max); margin: 0 auto; padding: 0 20px;
  height: 60px; display: flex; align-items: center; gap: 26px;
}
.brand {
  display: flex; align-items: center; gap: 9px;
  font-weight: 700; font-size: 16px; color: var(--ink); letter-spacing: -.02em;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, var(--brand), #6d28d9);
  display: grid; place-items: center; color: #fff; flex: none;
}
.nav { display: flex; gap: 4px; flex: 1; }
.nav a {
  color: var(--ink-2); font-size: 14px; font-weight: 500;
  padding: 7px 11px; border-radius: var(--r-sm);
}
.nav a:hover { background: var(--surface-2); color: var(--ink); text-decoration: none; }
.nav a.on { background: var(--brand-bg); color: var(--brand-ink); }
.topbar .who { color: var(--ink-3); font-size: 13px; }

main { max-width: var(--max); margin: 30px auto 60px; padding: 0 20px; }
main.narrow { max-width: 460px; }
main.wide   { max-width: 1180px; }

/* ---------------------------------------------------------------- card --- */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 24px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
}
.card > h2 { margin-bottom: 4px; }
.card > h2 + .sub { margin-bottom: 18px; }
.sub { color: var(--ink-2); font-size: 14px; }
.card-accent { border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-bg); }
.card-warn   { border-color: #fec84b; box-shadow: 0 0 0 3px var(--warn-bg); }

.section-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 14px; }
.section-head h2 { flex: 1; }

/* --------------------------------------------------------------- forms --- */

.field { margin-bottom: 16px; }
label {
  display: block; font-size: 13px; font-weight: 550;
  color: var(--ink); margin-bottom: 6px;
}
.hint { color: var(--ink-2); font-size: 12.5px; margin-top: 6px; }

/* Marks a field that has a step behind it — set apart from the label so it
   reads as a note about the field rather than part of its name. */
.req-tag {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--brand-bg);
  color: var(--brand-ink);
  font-size: 11px;
  font-weight: 600;
  vertical-align: 1px;
}

input[type=text], input[type=email], input[type=password], input[type=tel],
input:not([type]), select, textarea {
  width: 100%;
  font: inherit; font-size: 15px;
  color: var(--ink); background: var(--surface);
  border: 1px solid var(--line-2); border-radius: var(--r);
  padding: 10px 13px;
  transition: border-color .12s, box-shadow .12s;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-bg);
}
input::placeholder { color: var(--ink-3); }

.input-group { display: flex; align-items: stretch; }
.input-group input { border-radius: var(--r) 0 0 var(--r); border-right: 0; }
.input-group .suffix {
  display: flex; align-items: center; padding: 0 13px;
  background: var(--surface-2); border: 1px solid var(--line-2);
  border-radius: 0 var(--r) var(--r) 0;
  color: var(--ink-2); font-size: 14px; white-space: nowrap;
}

/* -------------------------------------------------------------- buttons -- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  font: inherit; font-size: 14px; font-weight: 550;
  padding: 10px 16px; border-radius: var(--r);
  border: 1px solid var(--line-2); background: var(--surface); color: var(--ink);
  cursor: pointer; text-decoration: none;
  transition: background .12s, border-color .12s, transform .04s;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--brand); border-color: var(--brand); color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--brand-ink); border-color: var(--brand-ink); }
.btn-danger { color: var(--bad); border-color: var(--line-2); }
.btn-danger:hover { background: var(--bad-bg); border-color: currentColor; }
.btn-lg { padding: 13px 22px; font-size: 15.5px; }
.btn-block { width: 100%; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--ink-2); }

/* --------------------------------------------------------------- alerts -- */

.alert {
  display: flex; gap: 11px; align-items: flex-start;
  padding: 13px 15px; border-radius: var(--r);
  border: 1px solid var(--line); background: var(--surface);
  font-size: 14px; margin-bottom: 18px; line-height: 1.5;
}
.alert svg { flex: none; margin-top: 2px; }
.alert-ok   { background: var(--ok-bg);   border-color: #a6f4c5; color: var(--ok); }
.alert-warn { background: var(--warn-bg); border-color: #fec84b; color: var(--warn); }
.alert-bad  { background: var(--bad-bg);  border-color: #fda29b; color: var(--bad); }
.alert strong { font-weight: 650; }
.alert a { color: inherit; text-decoration: underline; }

/* --------------------------------------------------------------- badges -- */

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 600; padding: 3px 9px;
  border-radius: 99px; border: 1px solid var(--line-2); color: var(--ink-2);
  background: var(--surface);
}
.badge-ok   { color: var(--ok);   background: var(--ok-bg);   border-color: #a6f4c5; }
.badge-warn { color: var(--warn); background: var(--warn-bg); border-color: #fec84b; }
.badge-bad  { color: var(--bad);  background: var(--bad-bg);  border-color: #fda29b; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* --------------------------------------------------------------- tables -- */

.table-wrap { overflow-x: auto; margin: 0 -24px -24px; padding: 0 24px 4px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th {
  text-align: left; font-size: 11.5px; font-weight: 600; letter-spacing: .04em;
  text-transform: uppercase; color: var(--ink-3);
  padding: 0 12px 9px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
td { padding: 13px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }
th:first-child, td:first-child { padding-left: 0; }
th:last-child,  td:last-child  { padding-right: 0; text-align: right; }
.muted { color: var(--ink-2); }
.tiny  { font-size: 12.5px; }

/* ---------------------------------------------------------------- stats -- */

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; }
.stat {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r); padding: 16px;
}
.stat b { display: block; font-size: 24px; font-weight: 680; letter-spacing: -.02em; }
.stat span { color: var(--ink-2); font-size: 12.5px; }

/* --------------------------------------------------------------- empty --- */

.empty { text-align: center; padding: 34px 20px; color: var(--ink-2); }
.empty svg { color: var(--ink-3); margin-bottom: 10px; }
.empty p { font-size: 14px; }

/* ------------------------------------------------------------- landing --- */

.hero { padding: 56px 0 34px; text-align: center; }
.hero h1 { font-size: 40px; margin-bottom: 14px; }
.hero .lead { font-size: 17px; color: var(--ink-2); max-width: 560px; margin: 0 auto 26px; }
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--brand-bg); color: var(--brand-ink);
  font-size: 13px; font-weight: 600; padding: 5px 13px;
  border-radius: 99px; margin-bottom: 18px;
}

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.feature { padding: 20px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); }
.feature .ico {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: var(--brand-bg); color: var(--brand-ink); margin-bottom: 12px;
}
.feature h3 { margin-bottom: 5px; }
.feature p { color: var(--ink-2); font-size: 13.5px; }

.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.plan {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 22px; display: flex; flex-direction: column;
}
.plan.featured { border-color: var(--brand); box-shadow: var(--shadow-lg); position: relative; }
.plan .tag {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  background: var(--brand); color: #fff; font-size: 11.5px; font-weight: 600;
  padding: 3px 11px; border-radius: 99px; white-space: nowrap;
}
.plan .price { font-size: 32px; font-weight: 700; letter-spacing: -.03em; margin: 10px 0 2px; }
.plan .per   { color: var(--ink-3); font-size: 13px; }
.plan ul { list-style: none; padding: 0; margin: 18px 0; flex: 1; }
.plan li { display: flex; gap: 9px; align-items: flex-start; font-size: 13.5px; margin-bottom: 9px; color: var(--ink-2); }
.plan li svg { flex: none; margin-top: 3px; color: var(--ok); }

footer.site {
  border-top: 1px solid var(--line); margin-top: 50px;
  padding: 26px 20px; color: var(--ink-3); font-size: 13px;
}
footer.site .in { max-width: var(--max); margin: 0 auto; display: flex; gap: 18px; flex-wrap: wrap; }
footer.site a { color: var(--ink-2); }

/* ----------------------------------------------------------- split form -- */

.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 34px; align-items: start; }
@media (max-width: 820px) {
  .split { grid-template-columns: 1fr; gap: 22px; }
  .hero h1 { font-size: 30px; }
  .hero { padding: 34px 0 22px; }
  .topbar-in { gap: 14px; }
  .nav { display: none; }
  .card { padding: 20px; }
  .table-wrap { margin: 0 -20px -20px; padding: 0 20px 4px; }
}

.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; }
.steps li {
  counter-increment: s; position: relative; padding-left: 34px;
  margin-bottom: 14px; color: var(--ink-2); font-size: 14px;
}
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: -1px;
  width: 23px; height: 23px; border-radius: 50%;
  background: var(--brand-bg); color: var(--brand-ink);
  font-size: 12px; font-weight: 650; display: grid; place-items: center;
}
.steps li strong { color: var(--ink); font-weight: 600; }

.kv { display: grid; grid-template-columns: auto 1fr; gap: 10px 20px; font-size: 14px; }
.kv dt { color: var(--ink-2); }
.kv dd { margin: 0; font-weight: 500; }

.paybox {
  background: var(--surface-2); border: 1px dashed var(--line-2);
  border-radius: var(--r); padding: 18px; text-align: center; margin-bottom: 18px;
}
.paybox .num {
  font-size: 27px; font-weight: 700; letter-spacing: .02em;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.paybox .lbl { color: var(--ink-2); font-size: 13px; margin-bottom: 4px; }