/* ===========================================================
   Hostel Hisab — shared styles (landing + sub-pages)
   =========================================================== */

/* ---------- Reset & tokens ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --teal:#00897B; --teal-d:#00695C; --teal-dd:#004d40;
  --green:#43A047; --green-d:#2E7D32;
  --ink:#0f1f1c; --body:#41524e; --muted:#6b7c78;
  --line:#e3ebe8; --bg:#f5f7f6; --card:#ffffff;
  --shadow:0 1px 2px rgba(16,40,36,.04),0 8px 24px rgba(16,40,36,.06);
  --shadow-lg:0 12px 40px rgba(16,40,36,.14);
  --radius:18px; --maxw:1120px;
  --grad:linear-gradient(135deg,#00897B 0%,#00695C 60%,#004d40 100%);
  font-synthesis:none;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Segoe UI",Roboto,system-ui,-apple-system,"Noto Sans Bengali","Helvetica Neue",Arial,sans-serif;
  color:var(--body);background:var(--bg);line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
h1,h2,h3{color:var(--ink);line-height:1.15;letter-spacing:-.02em;font-weight:800}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:20px}
.bn{font-family:"Noto Sans Bengali",system-ui,sans-serif}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px;
  padding:13px 22px;border-radius:999px;cursor:pointer;border:0;transition:transform .15s ease,box-shadow .2s ease,background .2s ease;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 8px 20px rgba(67,160,71,.35)}
.btn-primary:hover{background:var(--green-d);box-shadow:0 10px 26px rgba(46,125,50,.42)}
.btn-light{background:#fff;color:var(--teal-d);box-shadow:var(--shadow)}
.btn-light:hover{box-shadow:var(--shadow-lg)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.3)}
.btn-ghost:hover{background:rgba(255,255,255,.22)}
.btn svg{width:20px;height:20px}

/* ---------- Header ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(245,247,246,.82);backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;color:var(--ink);font-size:18px;letter-spacing:-.02em}
.logo{width:38px;height:38px;border-radius:11px;background:var(--grad);display:grid;place-items:center;box-shadow:0 6px 16px rgba(0,105,92,.35);flex:none}
.logo svg{width:22px;height:22px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{color:var(--body);font-weight:600;font-size:15px}
.nav-links a:hover{color:var(--teal)}
.nav-cta{display:flex;align-items:center;gap:14px}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:#fff;font-size:13px;font-weight:700}
.lang button{border:0;background:transparent;padding:7px 13px;cursor:pointer;color:var(--muted)}
.lang button.on{background:var(--teal);color:#fff}
.menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:11px;width:42px;height:42px;cursor:pointer;align-items:center;justify-content:center}
.menu-btn svg{width:22px;height:22px;color:var(--ink)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:var(--grad);clip-path:ellipse(150% 100% at 50% 0%)}
.hero-bg::after{content:"";position:absolute;inset:0;background:
  radial-gradient(600px 300px at 85% 10%,rgba(67,160,71,.45),transparent 60%),
  radial-gradient(500px 260px at 10% 30%,rgba(255,255,255,.10),transparent 60%)}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center;padding-top:64px;padding-bottom:96px}
.badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#eafff7;font-weight:700;font-size:13px;padding:7px 14px;border-radius:999px;margin-bottom:20px}
.badge .dot{width:8px;height:8px;border-radius:50%;background:#7CFFC4;box-shadow:0 0 0 4px rgba(124,255,196,.25)}
.hero h1{color:#fff;font-size:clamp(32px,5vw,52px);margin-bottom:16px}
.hero p.sub{color:rgba(255,255,255,.92);font-size:clamp(16px,2vw,19px);max-width:30em;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-meta{display:flex;gap:22px;margin-top:26px;color:rgba(255,255,255,.85);font-size:13.5px;font-weight:600;flex-wrap:wrap}
.hero-meta span{display:flex;align-items:center;gap:7px}
.hero-meta svg{width:16px;height:16px;opacity:.9}

/* ---------- Phone mockup ---------- */
.phone-wrap{display:flex;justify-content:center}
.phone{width:280px;background:#0c1311;border-radius:38px;padding:11px;box-shadow:var(--shadow-lg),0 0 0 2px rgba(255,255,255,.06) inset;position:relative}
.phone::before{content:"";position:absolute;top:18px;left:50%;transform:translateX(-50%);width:90px;height:6px;border-radius:6px;background:#000;opacity:.6;z-index:3}
.screen{background:#f5f7f6;border-radius:29px;overflow:hidden;height:560px}
.s-top{padding:26px 18px 10px}
.s-top h4{font-size:17px;color:#0f1f1c}
.s-top small{color:#8a9a96;font-weight:600}
.rate-card{margin:8px 18px 0;background:var(--grad);border-radius:18px;padding:18px;color:#fff;box-shadow:0 10px 24px rgba(0,105,92,.32)}
.rate-card .lbl{font-size:12.5px;opacity:.85;font-weight:600}
.rate-card .amt{font-size:30px;font-weight:800;letter-spacing:-.02em;margin-top:2px}
.rate-card .foot{font-size:11.5px;opacity:.8;margin-top:3px}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:14px 18px}
.tile{background:#fff;border-radius:14px;padding:13px;box-shadow:0 1px 2px rgba(16,40,36,.05)}
.tile .ic{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;margin-bottom:9px}
.tile .ic svg{width:17px;height:17px}
.tile .big{font-size:18px;font-weight:800;color:#0f1f1c}
.tile .cap{font-size:11.5px;color:#8a9a96;font-weight:600}
.t1{background:#e0f2f1;color:#00897B}.t2{background:#e8f5e9;color:#43A047}
.t3{background:#e3f2fd;color:#0288D1}.t4{background:#fff3e0;color:#F59E0B}
.nav-bar{display:flex;justify-content:space-around;padding:12px 6px;background:#fff;border-top:1px solid #eef2f1;position:absolute;bottom:0;left:0;right:0;border-radius:0 0 29px 29px}
.nav-bar i{width:7px;height:7px;border-radius:50%;background:#cfd9d6;display:block}
.nav-bar i.act{background:var(--teal);width:18px;border-radius:4px}

/* ---------- Sections ---------- */
section{padding:84px 0}
.sec-head{text-align:center;max-width:38em;margin:0 auto 52px}
.eyebrow{color:var(--teal);font-weight:800;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:12px}
.sec-head h2{font-size:clamp(26px,3.6vw,38px)}
.sec-head p{margin-top:14px;font-size:17px;color:var(--muted)}

/* features */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .2s ease}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.feature .fic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin-bottom:16px;background:#e0f2f1;color:var(--teal)}
.feature .fic svg{width:24px;height:24px}
.feature h3{font-size:17px;margin-bottom:7px}
.feature p{font-size:14.5px;color:var(--muted)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:s}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow)}
.step .num{counter-increment:s;width:44px;height:44px;border-radius:12px;background:var(--grad);color:#fff;font-weight:800;font-size:19px;display:grid;place-items:center;margin-bottom:16px}
.step .num::after{content:counter(s)}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:15px;color:var(--muted)}

/* download band */
.download{background:var(--grad);position:relative;overflow:hidden}
.download::after{content:"";position:absolute;inset:0;background:radial-gradient(700px 320px at 80% 0%,rgba(67,160,71,.4),transparent 60%)}
.dl-card{position:relative;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.download h2{color:#fff;font-size:clamp(26px,3.6vw,38px)}
.download p{color:rgba(255,255,255,.9);font-size:17px;margin-top:14px;max-width:30em}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.dl-note{margin-top:20px;color:rgba(255,255,255,.82);font-size:13.5px;display:flex;flex-wrap:wrap;gap:8px 20px}
.dl-note span{display:flex;align-items:center;gap:7px}
.dl-note svg{width:16px;height:16px}
.qr{background:#fff;border-radius:20px;padding:22px;text-align:center;box-shadow:var(--shadow-lg);justify-self:end}
.qr .store{display:inline-flex;align-items:center;gap:12px;background:#0c1311;color:#fff;border-radius:14px;padding:12px 18px;width:100%;justify-content:center}
.qr .store svg{width:30px;height:30px}
.qr .store small{display:block;font-size:10.5px;opacity:.8;font-weight:600;line-height:1.1}
.qr .store b{font-size:17px;line-height:1.1}
.qr p{color:var(--muted);font-size:13px;margin-top:14px}

/* install steps */
.install{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:8px}
.inst{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
.inst b{display:grid;place-items:center;flex:none;width:30px;height:30px;border-radius:9px;background:#e8f5e9;color:var(--green-d);font-weight:800}
.inst p{font-size:14.5px;color:var(--body)}

/* faq */
.faq{max-width:760px;margin-inline:auto}
details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:4px 22px;margin-bottom:12px;box-shadow:var(--shadow)}
details[open]{border-color:#cfe7e2}
summary{cursor:pointer;list-style:none;padding:18px 0;font-weight:700;color:var(--ink);font-size:16.5px;display:flex;justify-content:space-between;align-items:center;gap:16px}
summary::-webkit-details-marker{display:none}
summary .chev{width:22px;height:22px;flex:none;transition:transform .2s ease;color:var(--teal)}
details[open] summary .chev{transform:rotate(180deg)}
details p{padding:0 0 18px;color:var(--muted);font-size:15px}

/* ===========================================================
   Sub-pages (Contact / Terms / Refund)
   =========================================================== */
.page-hero{position:relative;overflow:hidden;background:var(--grad);color:#fff;padding:58px 0 46px}
.page-hero::after{content:"";position:absolute;inset:0;background:radial-gradient(600px 280px at 85% 0%,rgba(67,160,71,.4),transparent 60%)}
.page-hero .wrap{position:relative}
.crumb{display:inline-flex;align-items:center;gap:7px;color:rgba(255,255,255,.85);font-weight:600;font-size:13.5px;margin-bottom:14px}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb svg{width:15px;height:15px;opacity:.8}
.page-hero h1{color:#fff;font-size:clamp(28px,4.4vw,42px)}
.page-hero p{color:rgba(255,255,255,.9);font-size:16.5px;margin-top:12px;max-width:42em}

.content{padding:56px 0 80px}
.prose{max-width:780px;margin-inline:auto}
.prose>p,.prose>ul,.prose>ol{margin-bottom:15px;font-size:16px;color:var(--body)}
.prose h2{font-size:clamp(20px,2.6vw,25px);margin:36px 0 12px;color:var(--ink)}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:17.5px;margin:22px 0 8px;color:var(--ink)}
.prose ul,.prose ol{padding-left:1.25em}
.prose li{margin-bottom:8px;font-size:16px}
.prose a.link{color:var(--teal);font-weight:600;text-decoration:underline}
.prose strong{color:var(--ink)}
.updated{display:inline-block;background:#e0f2f1;color:var(--teal-d);font-weight:700;font-size:13px;padding:6px 13px;border-radius:999px;margin-bottom:8px}
.callout{background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal);border-radius:12px;padding:16px 18px;margin:18px 0;box-shadow:var(--shadow)}
.callout p{margin:0;font-size:15px}

/* Contact cards */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:980px;margin:0 auto}
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow);text-align:center}
.contact-card .cic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin:0 auto 16px;background:#e0f2f1;color:var(--teal)}
.contact-card .cic svg{width:26px;height:26px}
.contact-card h3{font-size:17px;margin-bottom:6px}
.contact-card p{font-size:14.5px;color:var(--muted);margin-bottom:16px}
.contact-card .btn{width:100%;justify-content:center}
.contact-card .btn-wa{background:#25D366;color:#062b16}
.contact-card .btn-wa:hover{background:#1fb457}

/* ---------- footer ---------- */
footer{background:#0c1311;color:#aebbb7;padding:60px 0 30px}
.foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08)}
footer .brand{color:#fff}
footer h5{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:14px}
footer ul{list-style:none}
footer li{margin-bottom:10px}
footer a:hover{color:#fff}
footer .blurb{margin-top:14px;font-size:14.5px;max-width:30em}
.foot-bot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding-top:24px;font-size:13.5px}
.wa{display:inline-flex;align-items:center;gap:9px;background:#25D366;color:#062b16;font-weight:700;padding:11px 18px;border-radius:999px;margin-top:14px}
.wa svg{width:18px;height:18px}

/* ===========================================================
   Responsive
   =========================================================== */
.menu-dl{display:none} /* shown only inside the open mobile menu */

@media(max-width:980px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .hero .wrap{grid-template-columns:1fr;text-align:center;padding-bottom:72px}
  .hero p.sub{margin-inline:auto}.hero-cta,.hero-meta{justify-content:center}
  .phone-wrap{order:-1;margin-bottom:8px}
  .steps,.install{grid-template-columns:1fr}
  .dl-card{grid-template-columns:1fr;text-align:center}.dl-actions,.dl-note{justify-content:center}
  .qr{justify-self:center}.download p{margin-inline:auto}
  .foot-top{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr;max-width:460px}
}

/* ---- Tablet / small ---- */
@media(max-width:680px){
  .wrap{padding-inline:18px}
  /* Header: collapse to brand · language · menu (the CTA moves into the menu) */
  .nav-links{display:none}
  .menu-btn{display:flex}
  .nav-cta>.btn-primary{display:none}            /* hide header "Get the app" */
  .nav-cta{gap:10px}
  .lang button{padding:6px 11px}
  .nav-links.open{
    display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;
    align-items:stretch;background:#fff;padding:14px 18px 18px;gap:4px;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg)
  }
  .nav-links.open a{padding:14px 6px;font-size:16px;border-bottom:1px solid var(--line)}
  .nav-links.open a:last-child{border-bottom:0}
  .menu-dl{display:inline-flex!important;justify-content:center;margin-top:12px;padding:14px 20px;border-bottom:0!important;font-size:15.5px}

  .grid{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr;gap:26px}
  section{padding:56px 0}
  .sec-head{margin-bottom:38px}
  .hero .wrap{padding-top:48px;padding-bottom:60px}
  .hero .badge{font-size:12px}
  .page-hero{padding:44px 0 38px}
  .content{padding:44px 0 64px}
}

/* ---- Phones ---- */
@media(max-width:480px){
  .wrap{padding-inline:16px}
  .brand span:last-child{font-size:16.5px}
  .logo{width:34px;height:34px;border-radius:10px}.logo svg{width:20px;height:20px}
  /* Full-width, easy-to-tap primary actions */
  .hero-cta{flex-direction:column;align-items:stretch;width:100%;gap:12px}
  .hero-cta .btn{width:100%;justify-content:center;padding:15px 20px;font-size:15.5px}
  .hero-meta{gap:10px 18px;font-size:13px;justify-content:flex-start}
  .dl-actions{width:100%}.dl-actions .btn{width:100%;justify-content:center;padding:15px 20px}
  .qr{width:100%}
  /* Phone mockup scales to the screen */
  .phone{width:min(82vw,272px)}
  .screen{height:auto;aspect-ratio:272/560}
  .install .inst{padding:16px}
  .foot-bot{flex-direction:column;align-items:flex-start;gap:8px}
}

/* ---- Very small phones ---- */
@media(max-width:360px){
  .hero h1{font-size:28px}
  .phone{width:min(86vw,250px)}
  .nav-cta{gap:8px}
  .lang button{padding:6px 9px;font-size:12.5px}
}

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