/* ==========================================================================
   poroqia — চোখে চোখে
   style.css · mobile-first · একটি breakpoint: 768px
   ========================================================================== */

:root {
  --red:       #8A1F2D;
  --red-deep:  #5C121C;
  --gold:      #C9A24B;
  --cream:     #FBF4E9;
  --paper:     #FFFDF8;
  --ink:       #241712;
  --ink-soft:  #5A4A40;
  --night:     #1D1210;

  --wa:        #25D366;
  --line:      rgba(36, 23, 18, .14);
  --shadow:    0 10px 30px -14px rgba(36, 23, 18, .40);
  --shadow-lg: 0 24px 60px -24px rgba(36, 23, 18, .50);

  --r-card: 18px;
  --r-pill: 999px;
  --bar: 60px;

  --serif: "Noto Serif Bengali", Georgia, serif;
  --sans:  "Hind Siliguri", "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

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

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.85;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* কাগজের দানা — খুব হালকা noise */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .30;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.42'/%3E%3C/svg%3E");
}

body > * { position: relative; z-index: 1; }

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.45;
  margin: 0 0 .5em;
  letter-spacing: -.01em;
}

h1 { font-size: clamp(2rem, 8.5vw, 3.25rem); font-weight: 800; line-height: 1.28; }
h2 { font-size: clamp(1.5rem, 5.5vw, 2.15rem); }
h3 { font-size: 1.2rem; }
p  { margin: 0 0 1em; }

a { color: var(--red); text-decoration-color: rgba(138, 31, 45, .35); text-underline-offset: 3px; }
a:hover { color: var(--red-deep); }

img, svg { max-width: 100%; }

::selection { background: var(--gold); color: var(--night); }

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--red); color: var(--cream);
  padding: .6em 1em; z-index: 99; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; color: var(--cream); }

/* ------------------------------------------------------- layout ---------- */
.wrap { width: 100%; max-width: 1000px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 680px; }
.center { text-align: center; }

.section { padding: 56px 0; }

.divider {
  max-width: 1000px;
  margin: 0 auto;
  border-top: 2px dotted var(--gold);
  opacity: .8;
}

.lead      { font-size: 1.12rem; color: var(--ink-soft); max-width: 34ch; }
.big-body  { font-size: 1.1rem; color: var(--ink-soft); }
.sub       { color: var(--ink-soft); margin-top: -.4em; }
.note      { font-size: .95rem; color: var(--ink-soft); margin-top: 1.4em; }
.fineprint { font-size: .9rem; color: var(--ink-soft); letter-spacing: .02em; }

/* ------------------------------------------------------ buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .82em 1.55em;
  border: 1.5px solid transparent;
  border-radius: var(--r-pill);
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, box-shadow .2s ease, color .2s ease;
}
.btn:active { transform: translateY(1px) scale(.99); }

.btn-primary {
  background: var(--red);
  color: var(--cream);
  box-shadow: 0 8px 20px -10px rgba(138, 31, 45, .9);
}
.btn-primary:hover { background: var(--red-deep); color: var(--cream); }

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); background: rgba(36,23,18,.03); }

.btn-sm { padding: .55em 1.05em; font-size: .92rem; }

.btn-wa {
  width: 100%;
  background: var(--wa);
  color: #06331A;
  font-size: 1.05rem;
  padding: 1em 1.4em;
  box-shadow: 0 10px 24px -12px rgba(37, 211, 102, .95);
}
.btn-wa:hover { background: #1FBE5C; color: #06331A; }

.wa-icon {
  width: 22px; height: 22px; flex: none;
  background: currentColor;
  -webkit-mask: var(--wa-mask) center / contain no-repeat;
  mask: var(--wa-mask) center / contain no-repeat;
  --wa-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12.04 2C6.6 2 2.2 6.4 2.2 11.84c0 1.74.46 3.42 1.32 4.9L2 22l5.4-1.42a9.8 9.8 0 0 0 4.64 1.18h.01c5.43 0 9.84-4.4 9.84-9.84C21.89 6.4 17.47 2 12.04 2zm5.76 14.04c-.24.68-1.4 1.3-1.94 1.34-.5.05-.98.23-3.3-.7-2.78-1.1-4.55-3.95-4.69-4.14-.13-.19-1.12-1.5-1.12-2.85 0-1.36.71-2.02.96-2.3.25-.28.55-.35.73-.35.18 0 .37 0 .53.01.17.01.4-.06.62.48.24.57.8 1.97.87 2.11.07.14.12.31.02.5-.1.19-.15.31-.29.48-.14.16-.3.36-.43.49-.14.14-.29.29-.12.57.16.28.73 1.2 1.56 1.94 1.07.96 1.98 1.25 2.26 1.39.28.14.44.12.6-.07.17-.19.7-.81.88-1.09.19-.28.37-.23.63-.14.25.09 1.65.78 1.93.92.28.14.47.21.54.33.07.11.07.66-.17 1.34z'/%3E%3C/svg%3E");
}

/* ------------------------------------------------------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 30;
  background: rgba(251, 244, 233, .92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar-in {
  max-width: 1000px; margin: 0 auto;
  min-height: var(--bar);
  padding: 8px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.brand { display: flex; flex-direction: column; text-decoration: none; line-height: 1.2; }
.brand-mark {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1.22rem;
  letter-spacing: .01em;
  color: var(--ink);
  border-bottom: 2px solid var(--gold);
  align-self: flex-start;
  padding-bottom: 1px;
}
.brand-tag { font-size: .78rem; color: var(--ink-soft); letter-spacing: .04em; }

/* --------------------------------------------------------- hero ---------- */
.hero { padding: 46px 0 40px; }
.hero-grid { display: grid; gap: 40px; }

.eyebrow {
  display: inline-block;
  font-size: .82rem; font-weight: 600; letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: .9em;
}
.hero h1 { margin-bottom: .35em; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 1.6em 0 1em; }

.hero-visual {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  min-height: 300px;
}
.stack { position: relative; width: min(280px, 78vw); aspect-ratio: 5 / 7; }

.stack-card {
  position: absolute; inset: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  box-shadow: var(--shadow);
}
.stack-3 { transform: rotate(-7deg) translate(-10px, 8px); background: #F6EDDE; }
.stack-2 { transform: rotate(4.5deg) translate(9px, 3px); }
.stack-1 {
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 26px 22px;
  transform: rotate(-1.5deg);
  box-shadow: var(--shadow-lg);
  border-color: rgba(201, 162, 75, .5);
}
.stack-act {
  font-size: .78rem; font-weight: 600; letter-spacing: .1em;
  color: var(--gold); text-transform: uppercase;
}
.stack-q {
  font-family: var(--serif); font-weight: 700;
  font-size: 1.26rem; line-height: 1.6; margin: 0;
}
.stack-foot { font-size: .8rem; color: var(--ink-soft); letter-spacing: .04em; }

.stamp {
  position: absolute; top: 4px; right: 2px;
  width: 78px; height: 78px;
  display: grid; place-content: center;
  text-align: center;
  font-family: var(--serif); font-weight: 700; font-size: .72rem; line-height: 1.35;
  color: var(--red);
  border: 2px dashed var(--gold);
  border-radius: 50%;
  background: rgba(251, 244, 233, .82);
  transform: rotate(-12deg);
}

/* ------------------------------------------------------ problem ---------- */
.problem { text-align: center; }
.problem h2 { max-width: 16ch; margin-inline: auto; }

/* --------------------------------------------------------- acts ---------- */
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  box-shadow: var(--shadow);
  padding: 24px 22px;
}
.act-grid { display: grid; gap: 16px; margin-top: 28px; }
.act { display: flex; flex-direction: column; align-items: flex-start; }
.act h3 { margin: .15em 0 .2em; color: var(--red); }
.act p { margin: .5em 0 1.1em; color: var(--ink-soft); font-size: .98rem; }

.badge {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--serif); font-weight: 700;
  font-size: .78rem; letter-spacing: .02em;
  color: var(--red);
  background: rgba(138, 31, 45, .07);
  border: 1px solid rgba(138, 31, 45, .22);
  border-radius: var(--r-pill);
  padding: .18em .85em;
}
.act-no {
  font-family: var(--serif); font-weight: 700; font-size: .85rem;
  letter-spacing: .1em; color: var(--gold);
}
.count {
  display: inline-block;
  font-size: .82rem; font-weight: 600;
  color: var(--ink-soft);
  background: rgba(201, 162, 75, .16);
  border-radius: var(--r-pill);
  padding: .12em .8em;
}
.act-extra { border-style: dashed; background: transparent; box-shadow: none; }

/* --------------------------------------------------------- rule ---------- */
.rule {
  background: var(--night);
  color: var(--cream);
  padding: 62px 0;
}
.rule h2 { color: var(--cream); text-align: center; }
.rule .quote {
  font-family: var(--serif); font-size: 1.14rem; line-height: 1.7;
  color: rgba(251, 244, 233, .78);
  text-align: center;
  margin-top: 2.4em;
}
.quote-mark { color: var(--gold); font-size: 1.5em; margin-right: .12em; vertical-align: -.12em; }

.rule .steps { margin-top: 2.4em; }
.steps { list-style: none; counter-reset: none; margin: 2em 0 0; padding: 0; display: grid; gap: 22px; }
.steps li {
  display: grid;
  grid-template-columns: 44px 1fr;
  grid-template-rows: auto auto;
  column-gap: 16px;
  align-items: center;
}
.step-no {
  grid-row: 1 / 3;
  width: 44px; height: 44px;
  display: grid; place-content: center;
  font-family: var(--serif); font-weight: 700; font-size: 1.1rem;
  border: 1.5px solid var(--gold);
  border-radius: 50%;
  color: var(--gold);
}
.steps h3 { margin: 0; color: var(--cream); }
.steps p  { margin: 0; color: rgba(251, 244, 233, .72); font-size: .98rem; }

/* ------------------------------------------------------- sample ---------- */
.sample { padding-bottom: 48px; }

.flip {
  display: block;
  width: min(330px, 86vw);
  aspect-ratio: 5 / 7;
  margin: 30px auto 0;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  perspective: 1400px;
  -webkit-tap-highlight-color: transparent;
  font: inherit;
  color: inherit;
}
.flip-inner {
  position: relative;
  display: block;
  width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform .62s cubic-bezier(.3, .85, .35, 1);
}
.flip.is-flipped .flip-inner { transform: rotateY(180deg); }

.face {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 28px 24px;
  border-radius: var(--r-card);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  box-shadow: var(--shadow-lg);
}
.face-front {
  background: var(--paper);
  border: 1px solid rgba(201, 162, 75, .55);
}
.face-back {
  background: var(--red);
  border: 1px solid var(--red-deep);
  color: var(--cream);
  transform: rotateY(180deg);
}
.face-act, .face-label {
  font-size: .78rem; font-weight: 600; letter-spacing: .1em;
  color: var(--gold); text-align: left;
}
.face-label { text-transform: uppercase; }
.face-q, .face-why {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(1.15rem, 4.4vw, 1.4rem);
  line-height: 1.62;
  text-align: left;
  padding: .4em 0;
}
.face-why { font-weight: 600; color: var(--cream); }
.face-hint { font-size: .82rem; color: var(--ink-soft); letter-spacing: .04em; text-align: left; }
.face-back .face-hint { color: rgba(251, 244, 233, .6); }

.flip-nav {
  display: flex; align-items: center; justify-content: center; gap: 18px;
  margin: 22px 0 16px;
}
.nav-btn {
  width: 46px; height: 46px;
  display: grid; place-content: center;
  font-size: 1.6rem; line-height: 1;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 50%;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease;
}
.nav-btn:hover { border-color: var(--ink); background: #fff; }
.counter {
  font-family: var(--serif); font-weight: 700; font-size: 1rem;
  color: var(--ink-soft);
  min-width: 62px; text-align: center;
}

/* ---------------------------------------------------------- who ---------- */
.pills {
  list-style: none; margin: 1.6em 0 1.8em; padding: 0;
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
}
.pills li {
  border: 1px solid var(--gold);
  border-radius: var(--r-pill);
  padding: .4em 1.1em;
  font-size: .95rem; font-weight: 500;
  background: rgba(201, 162, 75, .1);
}

/* ---------------------------------------------------------- buy ---------- */
.buy-card { margin-top: 26px; }
.checklist { list-style: none; margin: 0; padding: 0; }
.checklist li {
  position: relative;
  padding-right: 0; padding-left: 30px;
  margin-bottom: .55em;
}
.checklist li::before {
  content: "✓";
  position: absolute; left: 0; top: 0;
  color: var(--gold); font-weight: 700;
}
.price {
  margin-top: 22px; padding-top: 20px;
  border-top: 2px dotted var(--gold);
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
}
.price-tk {
  font-family: var(--serif); font-weight: 800;
  font-size: clamp(2.4rem, 11vw, 3.2rem);
  line-height: 1; color: var(--red);
}
.price-note { font-size: .92rem; color: var(--ink-soft); letter-spacing: .04em; }

.how-title { margin-top: 2.2em; text-align: center; }
.buy-steps { margin-top: 1.2em; }
.buy-steps .step-no { border-color: var(--red); color: var(--red); }
.buy-steps li { grid-template-rows: auto; }
.buy-steps p { color: var(--ink); }

.bkash-box {
  margin: 2.2em 0 1em;
  border: 1px dashed var(--gold);
  border-radius: var(--r-card);
  background: var(--paper);
  padding: 16px;
  text-align: center;
}
.bkash-label {
  font-size: .8rem; font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-soft);
  margin-bottom: .4em;
}
.bkash-num {
  width: 100%;
  display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap;
  background: transparent; border: 0; cursor: pointer;
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(1.35rem, 6.5vw, 1.7rem);
  color: var(--ink);
  letter-spacing: .04em;
  padding: .2em;
}
.copy-tag {
  font-family: var(--sans); font-weight: 600; font-size: .8rem;
  letter-spacing: .02em;
  color: var(--red);
  border: 1px solid rgba(138, 31, 45, .35);
  border-radius: var(--r-pill);
  padding: .2em .8em;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.bkash-num.copied .copy-tag {
  background: var(--red); color: var(--cream); border-color: var(--red);
}

.disclaimer {
  margin-top: 1.4em;
  text-align: center;
  font-size: .95rem; font-weight: 500;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------- faq ---------- */
.faq details {
  border-bottom: 1px solid var(--line);
  padding: 4px 0;
}
.faq details:first-of-type { border-top: 1px solid var(--line); margin-top: 1.6em; }
.faq summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 14px 36px 14px 0;
  font-family: var(--serif); font-weight: 700; font-size: 1.04rem;
  line-height: 1.6;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute; right: 2px; top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem; font-weight: 400; color: var(--gold);
  transition: transform .2s ease;
}
.faq details[open] summary::after { content: "−"; }
.faq details p {
  margin: 0 0 16px;
  color: var(--ink-soft);
  font-size: 1rem;
}

/* ------------------------------------------------------- footer ---------- */
.footer {
  background: var(--night);
  color: rgba(251, 244, 233, .72);
  padding: 44px 0 40px;
  text-align: center;
  font-size: .95rem;
}
.footer .brand-mark { color: var(--cream); border-bottom-color: var(--gold); }
.foot-brand { display: flex; align-items: baseline; justify-content: center; gap: .5em; margin-bottom: 1em; }
.footer a { color: var(--gold); }
.footer a:hover { color: #E3C176; }
.foot-links .dot { margin: 0 .5em; opacity: .5; }
.foot-note { margin-bottom: 1.4em; }
.foot-disclaimer {
  margin: 0; font-size: .85rem;
  color: rgba(251, 244, 233, .5);
  max-width: 40ch; margin-inline: auto;
}


/* ------------------------------------------------ নতুন টাইপ স্টাইল ----- */
.intro { max-width: 52ch; margin-inline: auto; margin-top: -.3em; }

.highlight {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(1.15rem, 4.6vw, 1.4rem);
  color: var(--red);
  margin-top: 1.2em;
}

.rule-highlight {
  font-family: var(--serif); font-weight: 800;
  font-size: clamp(1.4rem, 6vw, 1.9rem);
  line-height: 1.5;
  text-align: center;
  color: var(--gold);
  margin: -.3em 0 0;
}

/* কেন আলাদা + উপলক্ষ */
.why h3 {
  margin-top: 1.8em;
  color: var(--red);
  font-size: 1.15rem;
}
.why p { color: var(--ink-soft); }
.occasions {
  list-style: none; margin: .6em 0 0; padding: 0;
}
.occasions li {
  position: relative;
  padding-left: 26px;
  margin-bottom: .45em;
  color: var(--ink-soft);
}
.occasions li::before {
  content: "❦";
  position: absolute; left: 0; top: 0;
  color: var(--gold); font-size: .95em;
}

/* ---------------------------------------------------- ≥ 768px ------------ */
@media (min-width: 768px) {
  body { font-size: 18px; }

  .section { padding: 84px 0; }
  .hero { padding: 72px 0 64px; }

  .hero-grid {
    grid-template-columns: 1.05fr .95fr;
    align-items: center;
    gap: 48px;
  }
  .hero-visual { min-height: 400px; }
  .stack { width: 300px; }

  .act-grid { grid-template-columns: repeat(3, 1fr); }
  .act-extra {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 16px;
  }
  .act-extra h3 { margin: 0; }
  .act-extra .count { flex: none; }
  .act-extra p { margin: 0; flex: 1 1 260px; }
  .act-extra .badge { flex: none; margin-top: 0; }

  .rule { padding: 96px 0; }
  .steps { gap: 26px; }

  .flip-nav { margin-top: 26px; }
  .bkash-num { gap: 20px; }
  .btn-wa { font-size: 1.1rem; }
}

/* -------------------------------------------- reduced motion ------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

/* --------------------------------------------------------- print --------- */
@media print {
  .topbar, .flip-nav, .btn, .stamp { display: none !important; }
  body::before { display: none; }
  body { background: #fff; color: #000; }
}