@font-face {
  font-family: 'Vazirmatn';
  src: url('/fonts/vazirmatn.woff2') format('woff2-variations'), url('/fonts/vazirmatn.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --bg: #f6f8f7;
  --surface: #ffffff;
  --surface-2: #eef3f1;
  --text: #0f1f1a;
  --muted: #5b6b66;
  --border: #dbe4e0;
  --primary: #0d7a5f;
  --primary-ink: #ffffff;
  --primary-soft: #dff3ec;
  --accent: #f59e0b;
  --danger: #c2410c;
  --danger-soft: #fdeee6;
  --ok: #15803d;
  --ok-soft: #e3f6e9;
  --code-bg: #0f1f1a;
  --code-text: #d7f5e9;
  --shadow: 0 1px 2px rgba(15, 31, 26, 0.06), 0 8px 24px rgba(15, 31, 26, 0.06);
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1411;
    --surface: #111d19;
    --surface-2: #16251f;
    --text: #e6f1ed;
    --muted: #93a8a0;
    --border: #22362f;
    --primary: #2fbf8f;
    --primary-ink: #06130e;
    --primary-soft: #143329;
    --danger: #fb923c;
    --danger-soft: #2c1a10;
    --ok: #4ade80;
    --ok-soft: #12291b;
    --code-bg: #07100d;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Vazirmatn', Tahoma, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
code, pre, .mono { font-family: ui-monospace, 'SFMono-Regular', Consolas, monospace; direction: ltr; unicode-bidi: embed; }
code { background: var(--surface-2); padding: 0.1em 0.4em; border-radius: 6px; font-size: 0.88em; }
pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 16px 18px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.7;
  text-align: left;
  margin: 12px 0;
}
pre code { background: none; padding: 0; color: inherit; font-size: inherit; }
h1, h2, h3 { line-height: 1.4; margin: 0 0 0.5em; }
h1 { font-size: clamp(28px, 5vw, 46px); font-weight: 800; letter-spacing: -0.01em; }
h2 { font-size: clamp(22px, 3.4vw, 32px); font-weight: 800; }
h3 { font-size: 18px; font-weight: 700; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); }
.small { font-size: 13.5px; }
.ltr { direction: ltr; text-align: left; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }

/* header */
.topbar { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.topbar .wrap { display: flex; align-items: center; gap: 20px; height: 64px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 20px; color: var(--text); }
.logo:hover { text-decoration: none; }
.logo-mark { width: 30px; height: 30px; border-radius: 9px; background: var(--primary); color: var(--primary-ink); display: grid; place-items: center; font-size: 16px; }
.nav { display: flex; gap: 18px; margin-inline-start: auto; align-items: center; }
.nav a { color: var(--muted); font-weight: 500; }
.nav a:hover { color: var(--text); text-decoration: none; }
.nav a.btn-primary, .nav a.btn-primary:hover { color: var(--primary-ink); }
@media (max-width: 720px) { .nav .hide-sm { display: none; } }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 10px; border: 1px solid transparent;
  font: inherit; font-weight: 600; cursor: pointer; text-decoration: none !important;
  background: var(--surface); color: var(--text); border-color: var(--border);
  transition: transform 0.05s, background 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { background: transparent; }
.btn-danger { color: var(--danger); }
.btn-sm { padding: 6px 12px; font-size: 14px; }
.btn-lg { padding: 13px 24px; font-size: 17px; }

/* hero */
.hero { padding: 72px 0 56px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.eyebrow { display: inline-flex; gap: 8px; align-items: center; background: var(--primary-soft); color: var(--primary); padding: 4px 12px; border-radius: 999px; font-weight: 600; font-size: 14px; margin-bottom: 16px; }
.lead { font-size: 18.5px; color: var(--muted); max-width: 560px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.trust { margin-top: 20px; display: flex; gap: 18px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }
.trust span::before { content: '✓ '; color: var(--primary); font-weight: 700; }

/* phone mockup */
.flow { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 20px; box-shadow: var(--shadow); }
.flow-step { display: flex; gap: 14px; align-items: flex-start; padding: 12px 0; border-bottom: 1px dashed var(--border); }
.flow-step:last-child { border-bottom: 0; }
.flow-ic { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; flex: none; font-size: 20px; background: var(--surface-2); }
.flow-ic.wa { background: #dcf8e6; }
.flow-ic.sms { background: #fff3d6; }
.flow-ic.ok { background: var(--ok-soft); }
.bubble { background: var(--surface-2); border-radius: 12px 12px 12px 4px; padding: 8px 12px; margin-top: 6px; font-size: 14px; }

/* sections */
section { padding: 56px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 36px; }
.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; } }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.card h3 { margin-bottom: 6px; }
.feature-ic { font-size: 26px; margin-bottom: 8px; }
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 720px) { .compare { grid-template-columns: 1fr; } }
.compare ol { margin: 0; padding-inline-start: 20px; }
.compare li { margin: 6px 0; }
.compare .old { opacity: 0.85; }
.compare .new { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.price { font-size: 34px; font-weight: 800; }
.price small { font-size: 15px; color: var(--muted); font-weight: 500; }
.band { background: var(--surface); border-block: 1px solid var(--border); }
details { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 10px 0 0; color: var(--muted); }
.cta-final { text-align: center; background: var(--primary); color: var(--primary-ink); border-radius: 20px; padding: 44px 20px; }
.cta-final .btn { background: var(--primary-ink); color: var(--primary); border-color: var(--primary-ink); }
footer { padding: 32px 0; color: var(--muted); font-size: 14px; border-top: 1px solid var(--border); margin-top: 40px; }
footer .wrap { display: flex; gap: 16px; flex-wrap: wrap; justify-content: space-between; }

/* forms */
label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 14.5px; }
input, select, textarea {
  width: 100%; font: inherit; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }
input.code-input { font-size: 26px; letter-spacing: 0.4em; text-align: center; direction: ltr; }
.field { margin-bottom: 14px; }
.hint { font-size: 13px; color: var(--muted); margin-top: 4px; }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; }
.inline-form .field { margin: 0; flex: 1 1 180px; }

/* auth */
.auth { min-height: calc(100vh - 64px); display: grid; place-items: center; padding: 32px 16px; }
.auth .card { width: 100%; max-width: 420px; }

/* alerts */
.alert { padding: 10px 14px; border-radius: 10px; margin-bottom: 16px; font-size: 14.5px; }
.alert-ok { background: var(--ok-soft); color: var(--ok); }
.alert-err { background: var(--danger-soft); color: var(--danger); }
.alert-info { background: var(--primary-soft); color: var(--primary); }

/* dashboard */
.app { display: grid; grid-template-columns: 230px 1fr; min-height: calc(100vh - 64px); }
@media (max-width: 860px) { .app { grid-template-columns: 1fr; } .side { position: static !important; display: flex; overflow-x: auto; gap: 4px; padding: 8px !important; border-left: 0 !important; border-bottom: 1px solid var(--border); } .side a { white-space: nowrap; } .side .side-title { display: none; } }
.side { border-left: 1px solid var(--border); padding: 20px 12px; background: var(--surface); position: sticky; top: 64px; height: calc(100vh - 64px); }
.side a { display: flex; gap: 10px; align-items: center; padding: 9px 12px; border-radius: 10px; color: var(--muted); font-weight: 500; margin-bottom: 2px; }
.side a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.side a.active { background: var(--primary-soft); color: var(--primary); }
.side-title { font-size: 12px; color: var(--muted); padding: 14px 12px 6px; font-weight: 700; }
.main { padding: 28px clamp(16px, 3vw, 36px); min-width: 0; }
.page-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.page-head h1 { font-size: 26px; margin: 0; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.stat .v { font-size: 26px; font-weight: 800; }
.stat .k { color: var(--muted); font-size: 14px; }
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th, td { text-align: right; padding: 11px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 13px; background: var(--surface-2); }
tr:last-child td { border-bottom: 0; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12.5px; font-weight: 600; background: var(--surface-2); color: var(--muted); }
.b-ok { background: var(--ok-soft); color: var(--ok); }
.b-err { background: var(--danger-soft); color: var(--danger); }
.b-wait { background: #fff3d6; color: #a16207; }
.b-wa { background: #dcf8e6; color: #15803d; }
.keybox { display: flex; gap: 8px; align-items: center; background: var(--code-bg); color: var(--code-text); padding: 12px 14px; border-radius: 10px; font-family: ui-monospace, Consolas, monospace; direction: ltr; word-break: break-all; }
.qr { width: 264px; height: 264px; background: #fff; border-radius: 14px; display: grid; place-items: center; border: 1px solid var(--border); }
.qr img { width: 248px; height: 248px; }
.empty { text-align: center; padding: 40px 16px; color: var(--muted); }
.stack > * + * { margin-top: 16px; }

/* docs */
.docs { display: grid; grid-template-columns: 220px 1fr; gap: 32px; padding: 32px 16px; }
@media (max-width: 860px) { .docs { grid-template-columns: 1fr; } .docs-nav { position: static !important; } }
.docs-nav { position: sticky; top: 84px; align-self: start; font-size: 14.5px; }
.docs-nav a { display: block; padding: 4px 0; color: var(--muted); }
.docs-nav a:hover { color: var(--primary); }
.docs h2 { margin-top: 40px; padding-top: 12px; border-top: 1px solid var(--border); }
.docs h2:first-child { margin-top: 0; border-top: 0; }
.endpoint { display: inline-flex; gap: 8px; align-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 6px 12px; direction: ltr; font-family: ui-monospace, Consolas, monospace; font-size: 14px; }
.method { font-weight: 800; color: var(--primary); }
.tabs { display: flex; gap: 4px; margin-top: 8px; flex-wrap: wrap; direction: ltr; }
.tabs button { font: inherit; font-size: 13px; padding: 4px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--muted); cursor: pointer; }
.tabs button.on { background: var(--code-bg); color: var(--code-text); border-color: var(--code-bg); }
.tab-panel { display: none; }
.tab-panel.on { display: block; }