/* ==========================================================================
   EduConnect — public site (homepage, registration)  v6
   assets/css/site.css
   Same family as the app (assets/css/style.css): Public Sans, chalk paper,
   ink, school green. The public pages add a deep green band and a
   marigold accent, and the exercise-book page as the hero object.
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Public+Sans:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400&display=swap');
:root{
  --paper:#f2f3ef; --paper-2:#e8eae3; --surface:#fff;
  --ink:#1a2129; --ink-2:#38424b; --muted:#5d6770;
  --line:#dcdfd8; --line-2:#ebede8;
  --green:#1a6e5c; --green-d:#145846; --forest:#123f34; --green-t:#e3efe9;
  --marigold:#e3a33b; --marigold-t:#fbf0dc;
  --margin:#d9a497; --red:#b4382a; --red-t:#f8e6e2;
  --rule:#c9dbe6;  /* exercise-book blue lines */
  --font:'Public Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --r:8px; --wrap:1160px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--paper);color:var(--ink);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--green)}
img,svg{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--marigold);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

/* ── Buttons ───────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:7px;font:inherit;font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;border:1px solid transparent;white-space:nowrap;transition:background .15s,border-color .15s}
.btn-primary{background:var(--marigold);color:var(--ink)}
.btn-primary:hover{background:#d8952a}
.btn-green{background:var(--green);color:#fff}
.btn-green:hover{background:var(--green-d)}
.btn-ghost{background:transparent;color:inherit;border-color:currentColor}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-line{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn-line:hover{border-color:var(--ink-2)}
.btn-sm{min-height:36px;padding:0 14px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.55;cursor:wait}

/* ── Top bar ───────────────────────────────────────────── */
.top{position:sticky;top:0;z-index:50;background:rgba(242,243,239,.94);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:18px;letter-spacing:-.02em}
.brand-mark{width:30px;height:30px;border-radius:7px;background:var(--green);display:grid;place-items:center;flex-shrink:0}
.brand-mark svg{width:17px;height:17px;color:#fff}
.top nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.top nav a{color:var(--ink-2);text-decoration:none;font-size:14.5px;font-weight:500;padding:8px 12px;border-radius:6px}
.top nav a:hover{background:rgba(26,33,41,.05);color:var(--ink)}
.top .actions{display:flex;gap:8px;align-items:center}
.nav-signin{display:none!important}
.menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line);background:var(--surface);border-radius:7px;cursor:pointer;align-items:center;justify-content:center}
.menu-btn svg{width:20px;height:20px}
@media (max-width:960px){
  .top nav{position:fixed;inset:64px 0 auto 0;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 16px 16px;gap:0;display:none;margin:0}
  .top nav.open{display:flex}
  .top nav a{padding:12px 8px;font-size:16px;border-bottom:1px solid var(--line-2);border-radius:0}
  .menu-btn{display:inline-flex;margin-left:auto}
  .top nav a.nav-signin{display:block!important;font-weight:700;color:var(--green)}
  .top .actions .btn-line{display:none}
}
@media (max-width:420px){.top .actions .btn-primary{padding:0 12px;font-size:14px}}

/* ── Hero: deep green band with an exercise-book page ─── */
.hero{background:var(--forest);color:#fff;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;align-items:center;padding-top:72px;padding-bottom:104px}
.hero h1{font-size:clamp(34px,5.2vw,58px);line-height:1.04;letter-spacing:-.035em;font-weight:800;max-width:14ch}
.hero .lead{font-size:clamp(16.5px,1.6vw,19px);color:#d4e3dc;margin-top:20px;max-width:46ch;line-height:1.6}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.hero .cta .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5)}
.hero .fine{margin-top:18px;font-size:14px;color:#a9c4b9}
.hero .fine a{color:#fff}
.levels{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:22px}
.levels span{font-size:13px;font-weight:600;padding:4px 10px;border-radius:5px;background:rgba(255,255,255,.1);color:#e7f0ec}

/* the page */
.book{background:#fdfdfb;color:var(--ink);border-radius:4px 10px 10px 4px;box-shadow:0 30px 60px rgba(0,0,0,.28),0 2px 0 #e9e9e2;position:relative;padding:26px 24px 22px 58px;
  background-image:linear-gradient(transparent 31px,var(--rule) 32px);background-size:100% 32px;background-position:0 10px;font-size:14px}
.book::before{content:'';position:absolute;top:0;bottom:0;left:42px;width:2px;background:var(--margin)}
.book::after{content:'';position:absolute;left:-1px;top:14px;bottom:14px;width:8px;background:radial-gradient(circle at 4px 50%,var(--forest) 3px,transparent 3.5px) 0 0/8px 32px repeat-y}
.book-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;line-height:32px;margin-top:-6px}
.book-head b{font-size:16px;letter-spacing:-.01em}
.book-head small{display:block;color:var(--muted);font-size:12.5px;line-height:18px}
.book table{width:100%;border-collapse:collapse;margin-top:8px}
.book th{font-size:12px;font-weight:600;color:var(--muted);text-align:left;height:32px;vertical-align:bottom;padding-bottom:6px}
.book td{height:32px;vertical-align:bottom;padding-bottom:6px;font-variant-numeric:tabular-nums}
.book .n{text-align:right;padding-right:6px}
.book .g{display:inline-block;min-width:26px;text-align:center;font-weight:700;border-radius:4px;font-size:12.5px;line-height:20px}
.g1{background:#d9eee4;color:#145846}.g2{background:#e6f0d6;color:#4a5c12}.g3{background:#fbf0dc;color:#7a5410}
.book .remark{font-family:'Segoe Print','Bradley Hand','Comic Sans MS',cursive;color:#1f4fa0;font-size:15px}
.book-foot{display:flex;justify-content:space-between;gap:12px;margin-top:6px;line-height:32px;font-size:13.5px}
.book-foot b{font-variant-numeric:tabular-nums}
.stamp{position:absolute;right:18px;bottom:58px;border:2px solid var(--green);color:var(--green);border-radius:6px;padding:3px 9px;font-weight:800;font-size:12px;transform:rotate(-6deg);background:rgba(253,253,251,.85)}
.sms{position:absolute;left:-34px;bottom:-74px;width:250px;background:var(--surface);color:var(--ink);border-radius:12px;padding:12px 14px;box-shadow:0 18px 40px rgba(0,0,0,.25);font-size:13px;line-height:1.45}
.sms small{display:block;color:var(--muted);font-size:11.5px;margin-bottom:3px}
@media (max-width:960px){
  .hero .wrap{grid-template-columns:1fr;gap:44px;padding-top:44px;padding-bottom:70px}
  .sms{position:relative;left:auto;right:auto;bottom:auto;width:auto;max-width:280px;margin:-18px 10px 0 auto}
}
@media (max-width:480px){
  .book{padding:20px 14px 18px 44px;font-size:13px}
  .book::before{left:32px}
  .book th:nth-child(2),.book td:nth-child(2){display:none}
  .stamp{display:none}
}

/* ── Sections ──────────────────────────────────────────── */
.section{padding:84px 0}
.section.tight{padding:60px 0}
.section h2{font-size:clamp(27px,3.4vw,40px);line-height:1.12;letter-spacing:-.03em;font-weight:800;max-width:22ch}
.section .intro{color:var(--ink-2);font-size:17.5px;margin-top:14px;max-width:58ch}
.on-white{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* who uses it — a timetable-like grid */
.roles{display:grid;grid-template-columns:repeat(5,1fr);margin-top:40px;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--surface)}
.roles>div{padding:20px 18px;border-right:1px solid var(--line-2)}
.roles>div:last-child{border-right:0}
.roles h3{font-size:16px;font-weight:700;letter-spacing:-.01em}
.roles p{font-size:14.5px;color:var(--muted);margin-top:6px;line-height:1.5}
.roles .when{display:block;font-size:12.5px;font-weight:600;color:var(--green);margin-bottom:10px}
@media (max-width:960px){.roles{grid-template-columns:1fr 1fr}.roles>div{border-bottom:1px solid var(--line-2)}.roles>div:nth-child(2n){border-right:0}}
@media (max-width:560px){.roles{grid-template-columns:1fr}.roles>div{border-right:0}}

/* features */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:40px 48px;margin-top:48px}
.features h3{font-size:18px;font-weight:700;letter-spacing:-.015em;padding-top:14px;border-top:2px solid var(--ink)}
.features p{color:var(--ink-2);margin-top:8px;font-size:15.5px}
.features .tag{display:inline-block;margin-top:10px;font-size:12.5px;font-weight:600;color:var(--green);background:var(--green-t);border-radius:4px;padding:2px 8px}
@media (max-width:960px){.features{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:600px){.features{grid-template-columns:1fr}}

/* pricing */
.pricing{display:grid;grid-template-columns:repeat(2,minmax(0,360px)) minmax(0,1fr);gap:20px;margin-top:44px;align-items:stretch}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:26px 24px;display:flex;flex-direction:column}
.plan.best{border:2px solid var(--green)}
.plan .name{font-weight:700;font-size:17px;display:flex;justify-content:space-between;align-items:center;gap:8px}
.plan .badge{font-size:12px;font-weight:700;background:var(--marigold-t);color:#7a5410;padding:3px 8px;border-radius:4px}
.plan .price{font-size:44px;font-weight:800;letter-spacing:-.04em;margin-top:14px;line-height:1}
.plan .price small{font-size:15px;font-weight:500;color:var(--muted);letter-spacing:0}
.plan .per{color:var(--muted);font-size:14.5px;margin-top:8px}
.plan .btn{margin-top:auto}
.plan .save{color:var(--green);font-weight:600;font-size:14px;margin:12px 0 22px}
.included{padding:6px 0 0 8px}
.included h3{font-size:16px;font-weight:700}
.included ul{list-style:none;margin-top:12px;columns:1}
.included li{padding:7px 0 7px 26px;border-bottom:1px solid var(--line-2);font-size:15px;position:relative}
.included li::before{content:'';position:absolute;left:2px;top:13px;width:12px;height:7px;border-left:2px solid var(--green);border-bottom:2px solid var(--green);transform:rotate(-45deg)}
@media (max-width:960px){.pricing{grid-template-columns:1fr 1fr}.included{grid-column:1/-1;padding:10px 0 0}}
@media (max-width:600px){.pricing{grid-template-columns:1fr}}

/* steps */
.steps{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:44px;counter-reset:s;border-top:1px solid var(--line)}
.steps li{padding:22px 28px 0 0;counter-increment:s}
.steps li::before{content:counter(s);display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;border:2px solid var(--ink);font-weight:800;margin-bottom:14px}
.steps h3{font-size:18px;font-weight:700}
.steps p{color:var(--ink-2);margin-top:6px;font-size:15.5px}
@media (max-width:760px){.steps{grid-template-columns:1fr}.steps li{padding:22px 0 0}}

/* closing band */
.band{background:var(--marigold);color:var(--ink)}
.band .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding-top:46px;padding-bottom:46px}
.band h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.03em;font-weight:800;max-width:24ch;line-height:1.15}
.band .btn-ink{background:var(--ink);color:#fff}
.band .btn-ink:hover{background:#000}
.band .btn-line{background:transparent;border-color:var(--ink)}

/* footer */
.foot{background:var(--ink);color:#c7ced3;font-size:14.5px}
.foot .wrap{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px;padding-top:52px;padding-bottom:32px}
.foot h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:12px}
.foot a{color:#c7ced3;text-decoration:none;display:block;padding:4px 0}
.foot a:hover{color:#fff}
.foot .brand{color:#fff}
.foot .legal{grid-column:1/-1;border-top:1px solid #333d46;padding-top:18px;font-size:13px;color:#8d979f;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media (max-width:760px){.foot .wrap{grid-template-columns:1fr 1fr}.foot .wrap>div:first-child{grid-column:1/-1}}

/* ── Sign-in modal ─────────────────────────────────────── */
.modal-overlay{position:fixed;inset:0;background:rgba(18,25,31,.55);z-index:200;display:flex;align-items:flex-start;justify-content:center;padding:6vh 16px;overflow-y:auto}
.modal{background:var(--surface);border-radius:12px;width:100%;max-width:430px;box-shadow:0 30px 70px rgba(0,0,0,.3)}
.modal-hdr{padding:22px 24px 4px;position:relative}
.modal-hdr h2{font-size:21px;letter-spacing:-.02em}
.modal-hdr p{color:var(--muted);font-size:14.5px;margin-top:2px}
.modal-close{position:absolute;right:14px;top:14px;width:36px;height:36px;border:0;background:transparent;border-radius:6px;cursor:pointer;font-size:20px;color:var(--muted)}
.modal-close:hover{background:var(--paper)}
.modal-body{padding:16px 24px 24px}
.ltabs{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-bottom:18px}
.ltab{border:0;border-right:1px solid var(--line);background:var(--paper);padding:10px 4px;font:inherit;font-size:13.5px;font-weight:600;color:var(--muted);cursor:pointer}
.ltab:last-child{border-right:0}
.ltab.active{background:var(--surface);color:var(--ink);box-shadow:inset 0 -2px 0 var(--green)}
.fg{margin-bottom:14px}
.fl{display:block;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.fi,.fs{width:100%;min-height:46px;padding:10px 13px;border:1px solid #c9cec5;border-radius:7px;font:inherit;font-size:16px;color:var(--ink);background:#fff}
.fi:focus,.fs:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(26,110,92,.16)}
.hint{font-size:13px;color:var(--muted);margin-top:5px}
.btn-si{width:100%;min-height:48px;border:0;border-radius:7px;background:var(--green);color:#fff;font:inherit;font-weight:700;font-size:16px;cursor:pointer;margin-top:4px}
.btn-si:hover{background:var(--green-d)}
.flash-err{background:var(--red-t);color:#7a2117;border:1px solid #ecc6be;border-radius:7px;padding:10px 12px;font-size:14px;margin-bottom:14px}
.flash-ok{background:var(--green-t);color:var(--green-d);border:1px solid #c3dccf;border-radius:7px;padding:10px 12px;font-size:14px;margin-bottom:14px}
.modal-foot{margin-top:16px;font-size:14px;color:var(--muted);text-align:center}
.modal-foot a{font-weight:600}
.small-links{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-top:14px;font-size:13.5px}