/* Pulse — subscription messaging SaaS. Modern indigo/violet/mint, dark hero +
   light app. Gradient glow, SVG grain, Space Grotesk (display) + Inter (body).
   Distinct from every other demo. Mobile-first. */
:root{
  --ink:#0e0e1a;
  --ink-2:#16162a;
  --indigo:#6366f1;
  --violet:#8b5cf6;
  --mint:#34d399;
  --paper:#f5f5fb;
  --panel:#ffffff;
  --mute:#8b8ba3;
  --mute-light:rgba(255,255,255,.62);
  --ink-soft:#2a2a44;
  --line:rgba(14,14,26,.10);
  --line-dark:rgba(255,255,255,.12);
  --shadow:0 24px 60px -28px rgba(14,14,26,.5);
  --shadow-sm:0 8px 24px -14px rgba(14,14,26,.3);
  --glow:0 0 80px -10px rgba(99,102,241,.6);
  --disp:'Space Grotesk','Segoe UI',sans-serif;
  --sans:'Inter','Helvetica Neue',Arial,sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
  --r:14px; --r-sm:9px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{font-family:'Inter','Helvetica Neue',Arial,sans-serif;color:var(--ink);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased;background:var(--paper);overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--indigo);text-decoration:none}
h1,h2,h3,h4{font-family:'Space Grotesk','Segoe UI',sans-serif;font-weight:600;line-height:1.08;letter-spacing:-.02em;color:var(--ink)}
h1{font-size:clamp(2.6rem,6vw,4.8rem)}
h2{font-size:clamp(2rem,4vw,3rem)}
button{font-family:inherit}
.wrap{max-width:1160px;margin:0 auto;padding:0 26px}
.eyebrow{font-family:var(--disp);font-weight:600;text-transform:uppercase;letter-spacing:.2em;font-size:.74rem;color:var(--violet);margin:0 0 1rem}
.btn{display:inline-flex;align-items:center;gap:.5em;font-weight:600;font-size:.92rem;padding:.85em 1.7em;border-radius:10px;cursor:pointer;border:1.5px solid transparent;transition:.25s var(--ease)}
.btn-grad{background:linear-gradient(120deg,var(--indigo),var(--violet));color:#fff}
.btn-grad:hover{filter:brightness(1.1);transform:translateY(-2px);box-shadow:var(--glow)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-ghost{background:transparent;color:#fff;border-color:var(--line-dark)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--violet)}
.btn-outline{background:transparent;color:var(--indigo);border-color:var(--line)}
.btn-outline:hover{background:rgba(99,102,241,.08);border-color:var(--indigo)}
.btn-sm{padding:.55em 1.1em;font-size:.84rem}
.btn-block{width:100%;justify-content:center}

/* ============ LANDING ============ */
.landing{display:block}
.landing.hidden{display:none}
.lnav{position:fixed;top:0;left:0;right:0;z-index:50;padding:18px 0;transition:.3s}
.lnav.scrolled{background:rgba(14,14,26,.92);backdrop-filter:blur(10px);padding:11px 0}
.lnav .wrap{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--disp);font-weight:700;font-size:1.3rem;color:#fff}
.brand .mk{width:32px;height:32px;flex:none}
.lnav-links{display:flex;align-items:center;gap:1.8rem;list-style:none}
.lnav-links a{color:rgba(255,255,255,.8);font-size:.9rem;font-weight:500}
.lnav-links a:hover{color:#fff}
.hero{position:relative;background:radial-gradient(1000px 600px at 70% -10%,rgba(139,92,246,.4),transparent 60%),radial-gradient(700px 500px at 10% 10%,rgba(99,102,241,.3),transparent 55%),linear-gradient(180deg,var(--ink),var(--ink-2));color:#fff;padding:160px 0 120px;text-align:center;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.4;mix-blend-mode:overlay;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='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E")}
.hero-inner{position:relative;z-index:2;max-width:780px;margin:0 auto}
.hero h1{color:#fff}
.hero h1 .g{background:linear-gradient(120deg,var(--indigo),var(--violet),var(--mint));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .lead{font-size:1.2rem;color:rgba(255,255,255,.82);max-width:54ch;margin:1.4rem auto 2.2rem}
.hero-cta{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.hero-note{margin-top:1.2rem;font-size:.82rem;color:rgba(255,255,255,.55)}
.section{padding:clamp(60px,8vw,104px) 0}
.section-head{max-width:640px;margin:0 auto 3rem;text-align:center}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.feat{background:linear-gradient(170deg,#fff,#f7f7fc);border:1px solid var(--line);border-radius:var(--r);padding:1.9rem;transition:transform .3s var(--ease),box-shadow .3s}
.feat:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.feat .ic{width:46px;height:46px;border-radius:11px;background:linear-gradient(120deg,rgba(99,102,241,.14),rgba(139,92,246,.14));display:grid;place-items:center;margin-bottom:1rem}
.feat .ic svg{width:24px;height:24px;stroke:var(--violet);fill:none}
.feat h3{font-size:1.12rem;margin-bottom:.3rem}
.feat p{font-size:.92rem;color:var(--mute);margin:0}
.bg-tint{background:linear-gradient(180deg,var(--paper),#eceaf6)}
/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;max-width:920px;margin:0 auto}
.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:2rem 1.8rem;display:flex;flex-direction:column;transition:transform .3s var(--ease),box-shadow .3s}
.price-card.feat-plan{border-color:transparent;background:linear-gradient(170deg,var(--ink),var(--ink-2));color:#fff;box-shadow:var(--shadow);position:relative}
.price-card.feat-plan h3,.price-card.feat-plan .amt{color:#fff}
.price-card.feat-plan .tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(120deg,var(--indigo),var(--violet));color:#fff;font-size:.72rem;font-weight:700;padding:.3em .9em;border-radius:20px;letter-spacing:.05em}
.price-card h3{font-size:1.15rem;margin-bottom:.3rem}
.price-card .amt{font-family:var(--disp);font-size:2.4rem;font-weight:700;margin-bottom:.2rem}
.price-card .amt span{font-size:.9rem;color:var(--mute);font-weight:400}
.price-card .plist{list-style:none;margin:1.2rem 0;display:grid;gap:.6rem;flex:1}
.price-card .plist li{display:flex;gap:.5rem;align-items:flex-start;font-size:.9rem}
.price-card .plist svg{width:18px;height:18px;flex:none;stroke:var(--mint);fill:none;margin-top:2px}
.lfoot{background:var(--ink);color:rgba(255,255,255,.6);padding:48px 0;text-align:center}
.lfoot a{color:var(--violet);font-weight:600}

/* ============ AUTH ============ */
.auth-screen{display:none;position:fixed;inset:0;z-index:100;place-items:center;padding:24px;overflow:auto;
  background:radial-gradient(800px 500px at 70% 0,rgba(139,92,246,.35),transparent 60%),linear-gradient(180deg,var(--ink),var(--ink-2))}
.auth-screen.active{display:grid}
.auth-card{background:#fff;border-radius:18px;box-shadow:var(--shadow);width:min(94vw,400px);padding:36px 32px}
.auth-card .brand{color:var(--ink);margin-bottom:1.4rem}
.auth-card .brand .mk path{stroke:var(--indigo)}
.auth-tabs{display:flex;gap:.4rem;background:var(--paper);border-radius:10px;padding:.3rem;margin-bottom:1.4rem}
.auth-tab{flex:1;padding:.6em;border:0;background:none;border-radius:8px;font-weight:600;font-size:.88rem;cursor:pointer;color:var(--mute);transition:.2s}
.auth-tab.active{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
.auth-card label{display:block;font-size:.82rem;font-weight:600;margin-bottom:.35rem}
.auth-card input{width:100%;padding:.8em 1em;border:1.5px solid var(--line);border-radius:9px;font-size:1rem;margin-bottom:1rem;transition:border .2s}
.auth-card input:focus{outline:none;border-color:var(--indigo)}
.auth-err{color:#d8503a;font-size:.84rem;margin-bottom:.8rem;display:none}
.auth-err.show{display:block}
.auth-alt{text-align:center;font-size:.85rem;color:var(--mute);margin-top:1rem}
.auth-back{position:fixed;top:20px;left:20px;color:rgba(255,255,255,.7);font-size:.85rem;background:none;border:0;cursor:pointer;z-index:101}

/* ============ APP ============ */
.app{display:none;min-height:100vh;grid-template-columns:240px 1fr}
.app.active{display:grid}
.side{position:fixed;top:0;left:0;bottom:0;width:240px;background:linear-gradient(180deg,var(--ink),var(--ink-2));color:rgba(255,255,255,.8);display:flex;flex-direction:column;z-index:40;transition:transform .3s var(--ease)}
.side-head{padding:20px;border-bottom:1px solid var(--line-dark)}
.side-nav{flex:1;padding:14px 12px;display:flex;flex-direction:column;gap:.2rem}
.side-nav a{display:flex;align-items:center;gap:.6rem;padding:.65em .8em;border-radius:9px;color:rgba(255,255,255,.75);font-size:.92rem;font-weight:500;cursor:pointer;transition:.2s}
.side-nav a svg{width:18px;height:18px;stroke:currentColor;fill:none}
.side-nav a:hover{background:rgba(255,255,255,.07);color:#fff}
.side-nav a.active{background:linear-gradient(120deg,var(--indigo),var(--violet));color:#fff}
.side-foot{padding:14px 16px;border-top:1px solid var(--line-dark);display:flex;align-items:center;gap:.6rem}
.side-foot .av{width:34px;height:34px;border-radius:50%;background:linear-gradient(120deg,var(--indigo),var(--violet));display:grid;place-items:center;font-weight:700;color:#fff;font-size:.82rem}
.side-foot .who{flex:1;min-width:0}
.side-foot .who b{display:block;font-size:.84rem;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-foot .who span{font-size:.72rem;color:rgba(255,255,255,.55)}
.side-foot .out{background:none;border:0;color:rgba(255,255,255,.55);cursor:pointer;font-size:.76rem;text-decoration:underline}
.amain{grid-column:2;display:flex;flex-direction:column;min-height:100vh}
.atop{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:1rem;padding:14px 28px;background:rgba(245,245,251,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.atop .burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.atop .burger span{width:24px;height:2px;background:var(--ink);border-radius:2px}
.atop h2{font-size:1.2rem}
.atop .plan-badge{margin-left:auto;font-size:.78rem;font-weight:600;padding:.35em .9em;border-radius:20px;background:rgba(99,102,241,.12);color:var(--indigo)}
.acontent{flex:1;padding:32px 28px 60px;max-width:880px;width:100%}
.aview{display:none;animation:fade .35s var(--ease)}
.aview.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:1.6rem 1.8rem;margin-bottom:1.4rem;box-shadow:var(--shadow-sm)}
.panel h3{font-size:1.1rem;margin-bottom:1rem}
.field{margin-bottom:1.1rem}
.field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.35rem}
.field input,.field select,.field textarea{width:100%;padding:.75em .9em;border:1.5px solid var(--line);border-radius:9px;font-family:inherit;font-size:.95rem;background:#fff;transition:border .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--indigo)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.chan-toggle{display:flex;gap:.6rem;flex-wrap:wrap}
.chan{flex:1;min-width:90px;padding:.7em;border:1.5px solid var(--line);border-radius:9px;text-align:center;cursor:pointer;font-weight:600;font-size:.86rem;transition:.2s;background:#fff}
.chan.sel{border-color:var(--indigo);background:rgba(99,102,241,.08);color:var(--indigo)}
.note{padding:.7em 1em;border-radius:9px;font-size:.86rem;display:none;margin-bottom:1rem}
.note.ok{display:block;background:rgba(52,211,153,.12);color:#1a7a52;border:1px solid rgba(52,211,153,.3)}
.queue{list-style:none;display:flex;flex-direction:column;gap:.7rem}
.queue li{display:grid;grid-template-columns:auto 1fr auto;gap:1rem;align-items:center;padding:.9rem 1.1rem;background:var(--paper);border:1px solid var(--line);border-radius:10px}
.queue .when{font-family:var(--disp);font-weight:600;font-size:.85rem;color:var(--indigo);white-space:nowrap}
.queue .msg{font-size:.9rem;color:var(--ink-soft);overflow:hidden;text-overflow:ellipsis}
.queue .ch{font-size:.72rem;font-weight:600;padding:.2em .6em;border-radius:20px;background:rgba(139,92,246,.12);color:var(--violet);white-space:nowrap}
.queue-empty{color:var(--mute);text-align:center;padding:1.4rem}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem;margin-bottom:1.4rem}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:1.4rem}
.stat .n{font-family:var(--disp);font-size:2rem;font-weight:700;background:linear-gradient(120deg,var(--indigo),var(--violet));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat .l{font-size:.82rem;color:var(--mute)}
.atable{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow-sm)}
.atable th,.atable td{text-align:left;padding:.8em 1em;border-bottom:1px solid var(--line);font-size:.9rem}
.atable th{font-family:var(--disp);font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;color:var(--mute);background:var(--paper)}
.pay-box{padding:1.2rem;background:var(--paper);border-radius:10px;margin-top:1rem;display:none}
.pay-box.show{display:block}

.sb-overlay{position:fixed;inset:0;background:rgba(14,14,26,.5);z-index:39;opacity:0;visibility:hidden;transition:opacity .3s}
.sb-overlay.open{opacity:1;visibility:visible}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}

@media(max-width:900px){ .feat-grid{grid-template-columns:1fr} .price-grid{grid-template-columns:1fr;max-width:420px} .stat-row{grid-template-columns:1fr} .lnav-links{display:none} }
@media(max-width:768px){
  .app.active{grid-template-columns:1fr}
  .side{transform:translateX(-100%);box-shadow:20px 0 60px rgba(0,0,0,.3)}
  .side.open{transform:translateX(0)}
  .amain{grid-column:1}
  .atop .burger{display:flex}
  .field-row{grid-template-columns:1fr}
  .queue li{grid-template-columns:1fr;gap:.4rem}
}
@media(max-width:480px){ body{font-size:15px} .auth-card{padding:30px 22px} .hero{padding:130px 0 90px} }