:root {
  /* ============================================================
     BRAND COLORS — শুধু এই ৪টা কালার বদলালেই পুরো সাইটের সব জায়গায়
     কালার বদলে যাবে। নিচের বাকি সবকিছু এই ৪টা থেকেই তৈরি।
     ============================================================ */
  --navy:   #1B2A56;
  --cream:  #F7F5F0;
  --orange: #FF5A36;
  --lime:   #C6FF3D;

  /* এগুলো উপরের ৪টা কালারেরই হালকা/টিন্ট ভার্সন — আলাদা করে বদলানোর দরকার নেই */
  --ink-muted:   color-mix(in srgb, var(--navy) 65%, transparent);
  --cream-muted: color-mix(in srgb, var(--cream) 80%, transparent);
  --orange-tint: color-mix(in srgb, var(--orange) 10%, var(--cream));
  --line-soft:   color-mix(in srgb, var(--cream) 12%, transparent);
  --lime-glow:   color-mix(in srgb, var(--lime) 45%, transparent);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--navy);
  /* ইংরেজি টেক্সট/নাম্বার Calibri-তে দেখাবে, বাংলা টেক্সট নিজে থেকেই Noto Sans Bengali-তে fallback করবে */
  font-family: 'Calibri', 'Noto Sans Bengali', 'Segoe UI', sans-serif;
  line-height: 1.6;
}

h1, h2, h3 {
  /* হেডলাইনের বাংলা অংশ Tiro Bangla-তে দেখাবে, ইংরেজি অংশ Calibri-তে */
  font-family: 'Calibri', 'Tiro Bangla', serif;
  color: var(--navy);
  margin: 0 0 .5em;
  line-height: 1.3;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: inherit; text-decoration: none; }

ul { margin: 0; padding: 0; list-style: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ---------- Buttons — সব বাটন orange, hover করলে lime ---------- */
.btn,
.btn-primary,
.btn-outline,
.btn-outline-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: 'Calibri', 'Noto Sans Bengali', sans-serif;
  font-weight: 600;
  font-size: 16px;
  border: 2px solid var(--orange);
  background: var(--orange);
  color: #fff;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover,
.btn-primary:hover,
.btn-outline:hover,
.btn-outline-light:hover {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--navy);
  transform: translateY(-2px);
}
.btn:focus-visible { outline: 3px solid var(--lime); outline-offset: 2px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--navy);
  border-bottom: 3px solid var(--lime);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
}
.logo-link { display: flex; align-items: center; }
.logo-svg { height: 44px; width: auto; display: block; }
.footer-logo-svg { height: 34px; width: auto; display: block; margin-bottom: 14px; }

.header-contacts { display: flex; align-items: center; gap: 10px; }
.header-icon-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--cream);
  font-size: 15px;
  border: 2px solid var(--cream);
  padding: 8px 16px;
  transition: background .2s, color .2s, border-color .2s;
}
.header-icon-link:hover { background: var(--lime); border-color: var(--lime); color: var(--navy); }
.header-icon-link.icon-only { padding: 9px; }

/* ---------- Hero ---------- */
.hero { padding: 64px 0 40px; }
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}
.hero-copy h1 {
  font-size: 40px;
  letter-spacing: .2px;
}
.hero-sub {
  font-size: 18px;
  color: var(--ink-muted);
  max-width: 46ch;
  margin: 0 0 28px;
}

.hero-graph { display: flex; justify-content: center; }

/* ---------- Ad dashboard mock (hero) ---------- */
.ad-mock {
  width: 100%;
  max-width: 340px;
  background: var(--navy);
  border: 1px solid color-mix(in srgb, var(--lime) 16%, transparent);
  box-shadow: 0 22px 44px -16px color-mix(in srgb, var(--navy) 45%, transparent);
  padding: 18px 22px 20px;
  opacity: 0;
  transform: translateY(16px);
  animation: adMockIn .6s .15s cubic-bezier(.2,.8,.2,1) forwards;
}
@keyframes adMockIn { to { opacity: 1; transform: none; } }

.ad-mock-bar {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 16px;
}
.ad-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--line-soft); }
.ad-mock-title { margin-left: 7px; font-size: 12.5px; color: var(--cream-muted); flex: 1; }
.ad-live { display: flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; color: var(--lime); }
.ad-live i {
  width: 7px; height: 7px; border-radius: 50%; background: var(--lime);
  animation: adPulse 1.6s ease-in-out infinite;
}
@keyframes adPulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }

.ad-metric { padding: 11px 0; border-top: 1px solid var(--line-soft); }
.ad-metric:first-of-type { border-top: none; padding-top: 2px; }
.ad-metric-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 4px; }
.ad-metric-label { font-size: 13px; color: var(--cream-muted); }
.ad-metric-trend {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--navy);
  background: var(--lime);
  padding: 2px 7px;
}
.ad-metric-value {
  font-family: 'Calibri', 'Noto Sans Bengali', sans-serif;
  font-size: 25px;
  color: #fff;
  margin-bottom: 5px;
}
.ad-spark { display: block; width: 100%; height: 20px; }
.ad-spark polyline { fill: none; stroke: var(--lime); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

@media (prefers-reduced-motion: reduce) {
  .ad-mock { opacity: 1; transform: none; animation: none; }
  .ad-live i { animation: none; }
}

/* ---------- Problem ---------- */
.problem {
  background: var(--navy);
  color: var(--cream);
  padding: 64px 0;
}
.problem-inner p {
  max-width: 70ch;
  margin: 0 auto;
  font-size: 18px;
  text-align: center;
  color: var(--cream-muted);
}

/* ---------- Packages ---------- */
.packages { padding: 72px 0; }
.packages h2 { font-size: 30px; text-align: center; }
.section-sub {
  text-align: center;
  color: var(--ink-muted);
  max-width: 60ch;
  margin: 0 auto 40px;
}
.section-sub.light { color: var(--cream-muted); }

.package-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
}
.package-card {
  background: var(--navy);
  border-left: 6px solid var(--lime);
  padding: 30px 22px;
  position: relative;
  display: flex;
  flex-direction: column;
  color: var(--cream);
  transition: transform .2s ease, box-shadow .2s ease;
}
.package-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 36px -16px var(--lime-glow);
}

.pkg-tag {
  display: inline-block;
  align-self: flex-start;
  background: var(--lime);
  color: var(--navy);
  font-weight: 700;
  font-size: 11.5px;
  padding: 4px 12px;
  margin-bottom: 14px;
  font-family: 'Calibri', 'Noto Sans Bengali', sans-serif;
}

.package-card h3 { color: var(--cream); font-size: 20px; }
.pkg-duration {
  color: var(--cream-muted);
  font-size: 14px;
  margin-bottom: 12px;
  font-family: 'Calibri', 'Noto Sans Bengali', sans-serif;
}
.pkg-price {
  font-family: 'Calibri', 'Tiro Bangla', serif;
  font-size: 23px;
  color: var(--lime);
  margin-bottom: 20px;
  white-space: nowrap;
}
.pkg-price .prefix {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--cream-muted);
  font-family: 'Calibri', 'Noto Sans Bengali', sans-serif;
  margin-bottom: 3px;
}
.pkg-price .fee {
  font-size: 11px;
  color: var(--cream-muted);
  font-family: 'Calibri', 'Noto Sans Bengali', sans-serif;
  white-space: nowrap;
  margin-left: 4px;
}

.pkg-features { margin-bottom: 26px; flex-grow: 1; }
.pkg-features li {
  padding: 7px 0 7px 22px;
  position: relative;
  font-size: 14px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--cream-muted);
  font-family: 'Calibri', 'Noto Sans Bengali', sans-serif;
}
.pkg-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--lime);
  font-weight: 700;
}

.pkg-note {
  text-align: center;
  color: var(--navy);
  font-size: 15.5px;
  margin-top: 36px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  background: var(--orange-tint);
  border-left: 4px solid var(--orange);
  padding: 18px 24px;
}

/* ---------- Form ---------- */
.form-section {
  background: var(--navy);
  color: var(--cream);
  padding: 72px 0;
}
.form-wrap { max-width: 560px; }
.form-section h2 { color: var(--cream); font-size: 28px; }

.field { margin-bottom: 18px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label {
  display: block;
  font-size: 14.5px;
  margin-bottom: 6px;
  color: var(--cream-muted);
}
input, select, textarea {
  width: 100%;
  padding: 12px 14px;
  border: none;
  background: var(--cream);
  color: var(--navy);
  font-family: 'Calibri', 'Noto Sans Bengali', sans-serif;
  font-size: 15px;
}
input:focus, select:focus, textarea:focus {
  outline: 3px solid var(--lime);
}
textarea { resize: vertical; }

.field-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}
.field-checkbox input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--lime);
  cursor: pointer;
  flex-shrink: 0;
}
.field-checkbox label {
  margin-bottom: 0;
  color: var(--cream);
  font-size: 15px;
  cursor: pointer;
}

.btn-submit { width: 100%; margin-top: 4px; }

.thank-you { text-align: center; padding: 20px 0; }
.ty-check {
  width: 56px; height: 56px;
  background: var(--lime);
  color: var(--navy);
  font-size: 28px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
}
.thank-you h2 { color: var(--cream); }
.thank-you p { color: var(--cream-muted); max-width: 46ch; margin: 0 auto 24px; }
.ty-contacts { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.hidden { display: none; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: var(--cream); padding: 48px 0 0; }
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line-soft);
}
.footer-address, .footer-contact {
  color: var(--cream-muted);
  font-size: 14.5px;
  margin: 4px 0;
  font-family: 'Calibri', 'Noto Sans Bengali', sans-serif;
}
.footer-contact a:hover { color: var(--lime); }

.footer-right { text-align: right; }
.footer-slogan {
  font-family: 'Calibri', 'Tiro Bangla', serif;
  font-size: 18px;
  color: var(--lime);
  margin-bottom: 16px;
}
.social-icons { display: flex; gap: 14px; justify-content: flex-end; flex-wrap: wrap; }
.social-icons a {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border: 1.5px solid var(--line-soft);
  color: var(--cream);
  transition: background .2s, border-color .2s, color .2s;
}
.social-icons svg { width: 18px; height: 18px; }
.social-icons a:hover { background: var(--lime); border-color: var(--lime); color: var(--navy); }

.footer-bottom {
  text-align: center;
  font-size: 13px;
  color: var(--cream-muted);
  padding: 18px 0;
  font-family: 'Calibri', 'Noto Sans Bengali', sans-serif;
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .package-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-graph { order: -1; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-right { text-align: center; }
  .social-icons { justify-content: center; }
  .footer-logo-svg { margin-left: auto; margin-right: auto; }
}

@media (max-width: 620px) {
  .package-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .hero-copy h1 { font-size: 30px; }
  .field-row { grid-template-columns: 1fr; }
  .header-icon-link .header-icon-text { display: none; }
  .header-icon-link { padding: 9px; }
}