/* Tafel website. System fonts only (no Google Fonts: nothing is loaded from other servers, good for data protection). */
:root{
  --ink:#13201c;--ink2:#3d4d47;--mute:#6b7a73;--bg:#fbfaf6;--card:#ffffff;--line:#e5e8e1;
  --green:#1f5b4a;--green2:#2b7d63;--board:#16241f;--yellow:#f2d25c;--yellow2:#e7bf2c;--violet:#6d4fd6;--blue:#3f7fd9;--red:#c2413a;
  --r:18px;--shadow:0 18px 50px rgba(19,32,28,.10),0 2px 6px rgba(19,32,28,.05);
  --font:"Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --disp:"Segoe UI Variable Display","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--green2)}
img,svg{max-width:100%}
.wrap{width:min(1160px,100% - 40px);margin:0 auto}
[hidden]{display:none!important}
.devbar{background:#7c2d12;color:#fff;text-align:center;font:600 13px var(--font);padding:6px}

/* navigation */
.nav{position:sticky;top:0;z-index:20;background:rgba(251,250,246,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:22px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font:800 21px var(--disp);color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.logo{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--board);color:var(--yellow);font:800 19px var(--disp)}
.nav-links{display:flex;gap:20px;margin-left:12px}
.nav-links a{color:var(--ink2);text-decoration:none;font-weight:500;font-size:15px}
.nav-links a:hover{color:var(--ink)}
.grow{flex:1}
.nav-r{display:flex;gap:10px;align-items:center}
@media (max-width:760px){.nav-links{display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);font:600 15px var(--font);text-decoration:none;cursor:pointer;transition:transform .12s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(19,32,28,.08)}
.btn:disabled{opacity:.55;cursor:default;transform:none;box-shadow:none}
.btn.primary{background:var(--yellow);border-color:var(--yellow2);color:#1b2420}
.btn.primary:hover{background:#f6db77}
.btn.dark{background:var(--board);border-color:var(--board);color:#fff}
.btn.ghost{background:none;border-color:transparent}
.btn.big{height:54px;padding:0 28px;font-size:16.5px;border-radius:14px}
.btn.danger{color:var(--red);border-color:#efcdca}
.btn.ai{background:linear-gradient(135deg,var(--violet),var(--blue));color:#fff;border-color:transparent}

/* hero */
.hero{background:radial-gradient(900px 500px at 85% 0%,rgba(242,210,92,.18),transparent 60%),radial-gradient(800px 500px at 0% 100%,rgba(43,125,99,.14),transparent 60%)}
.hero .wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;padding:64px 0 76px}
.aud{display:inline-flex;padding:4px;border-radius:999px;background:#fff;border:1px solid var(--line);margin-bottom:22px;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.aud button{height:36px;padding:0 18px;border:0;border-radius:999px;background:none;color:var(--ink2);font:600 14px var(--font);cursor:pointer}
.aud button.on{background:var(--board);color:#fff}
h1{font:800 clamp(36px,5vw,58px)/1.05 var(--disp);letter-spacing:-.03em;margin:0 0 18px}
h1 em{font-style:normal;background:linear-gradient(transparent 62%,rgba(242,210,92,.75) 62%)}
.lead{font-size:19px;color:var(--ink2);max-width:560px;margin:0 0 28px}
.cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.fine{font-size:13.5px;color:var(--mute);margin-top:14px}
body[data-aud="edu"] [data-for="biz"],body[data-aud="biz"] [data-for="edu"]{display:none!important}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr;padding:40px 0 56px}}

/* the little app picture in the hero, built from HTML */
.mock{position:relative;border-radius:22px;background:var(--board);padding:14px;box-shadow:0 40px 80px rgba(19,32,28,.28);transform:rotate(1.2deg)}
.mock-bar{display:flex;gap:6px;margin-bottom:10px}.mock-bar i{width:10px;height:10px;border-radius:50%;background:#ffffff26}
.mock-slide{aspect-ratio:16/9;border-radius:12px;background:#1e3a32;color:#eef3ec;padding:6% 7%;display:flex;flex-direction:column;gap:5%}
.mock-slide .k{color:var(--yellow);font:700 11px var(--font);letter-spacing:.05em;text-transform:uppercase}
.mock-slide h3{margin:0;font:800 clamp(16px,2.2vw,26px)/1.15 var(--disp)}
.mock-q{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mock-q span{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;background:#2b4640;font-size:clamp(10px,1.2vw,14px)}
.mock-q b{width:22px;height:22px;flex:none;border-radius:6px;display:grid;place-items:center;background:var(--yellow);color:#1b2420;font-size:12px}
.mock-q .ok{background:rgba(60,196,124,.3);box-shadow:inset 0 0 0 2px #3cc47c;animation:okpop 2.4s 1s ease-in-out infinite}
.mock-q .ok b{background:#3cc47c;color:#fff}
@keyframes okpop{0%,70%,100%{transform:none}80%{transform:scale(1.04)}}
.mock-poll{display:flex;flex-direction:column;gap:7px}
.mock-poll div{display:grid;grid-template-columns:90px 1fr 26px;align-items:center;gap:8px;font-size:clamp(10px,1.2vw,14px)}
.mock-poll i{display:block;height:12px;border-radius:6px;background:linear-gradient(90deg,var(--yellow),#f7e39a);animation:grow 1.4s ease both}
@keyframes grow{from{width:0!important}}
.mock-tools{position:absolute;left:50%;bottom:-18px;transform:translateX(-50%);display:flex;gap:6px;padding:7px 9px;border-radius:14px;background:#0f1a16;box-shadow:0 10px 24px rgba(0,0,0,.35)}
.mock-tools span{width:28px;height:28px;border-radius:8px;background:#ffffff14;display:grid;place-items:center;font-size:14px}
.mock-tools span.on{background:var(--yellow)}
.mock-timer{position:absolute;right:-14px;top:30%;padding:10px 14px;border-radius:14px;background:#fff;color:var(--ink);font:800 22px var(--disp);box-shadow:var(--shadow);transform:rotate(-2deg)}
.mock-timer small{display:block;font:600 10px var(--font);color:var(--mute);letter-spacing:.06em}

/* sections */
section{padding:84px 0}
.sec-h{max-width:720px;margin:0 0 42px}
.sec-h .k{display:inline-block;color:var(--green2);font:700 13px var(--font);letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px}
h2{font:800 clamp(28px,3.4vw,40px)/1.12 var(--disp);letter-spacing:-.02em;margin:0 0 12px}
.sec-h p{color:var(--ink2);font-size:17.5px;margin:0}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:900px){.grid3{grid-template-columns:1fr}}
.feat{padding:26px;border-radius:var(--r);background:var(--card);border:1px solid var(--line);box-shadow:0 1px 2px rgba(0,0,0,.03)}
.feat .ic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:23px;margin-bottom:14px;background:var(--c,#eef6f1)}
.feat h3{margin:0 0 6px;font:700 18px var(--disp)}
.feat p{margin:0;color:var(--ink2);font-size:15px}
.dark-sec{background:var(--board);color:#eef3ec}
.dark-sec .sec-h p{color:#b9c8c0}.dark-sec .sec-h .k{color:var(--yellow)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:s}
@media (max-width:900px){.steps{grid-template-columns:1fr}}
.step{padding:26px;border-radius:var(--r);background:#ffffff0d;border:1px solid #ffffff1a}
.step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--yellow);color:#1b2420;font:800 18px var(--disp);margin-bottom:14px}
.step h3{margin:0 0 6px;font:700 18px var(--disp)}.step p{margin:0;color:#b9c8c0;font-size:15px}

/* pricing */
.int{display:inline-flex;padding:4px;border-radius:999px;background:#fff;border:1px solid var(--line);margin-bottom:28px}
.int button{height:36px;padding:0 18px;border:0;border-radius:999px;background:none;color:var(--ink2);font:600 14px var(--font);cursor:pointer}
.int button.on{background:var(--board);color:#fff}
.int small{color:var(--green2);font-weight:700}
.prices{display:grid;grid-template-columns:repeat(2,minmax(0,380px));gap:20px}
@media (max-width:760px){.prices{grid-template-columns:1fr}}
.price{position:relative;padding:30px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px}
.price.pro{border:2px solid var(--violet)}
.price h3{margin:0;font:800 22px var(--disp)}
.amount{font:800 44px/1 var(--disp);letter-spacing:-.02em}.amount small{font:500 15px var(--font);color:var(--mute);margin-left:4px}
body[data-int="month"] [data-int-show="year"],body[data-int="year"] [data-int-show="month"]{display:none!important}
.price ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px;font-size:15px;color:var(--ink2)}
.price li::before{content:"✓";color:var(--green2);font-weight:800;margin-right:9px}
.badge{position:absolute;top:-13px;right:22px;padding:4px 12px;border-radius:999px;background:var(--violet);color:#fff;font:700 12px var(--font)}
body[data-pro="soon"] .pro-live{display:none!important}
body[data-pro="on"] .pro-soon{display:none!important}

/* FAQ */
.faq details{max-width:780px}
details{border-bottom:1px solid var(--line);padding:18px 0}
summary{cursor:pointer;font:700 17px var(--disp);list-style:none;display:flex;justify-content:space-between;gap:20px}
summary::after{content:"+";font-weight:400;color:var(--mute);font-size:24px;line-height:1}
details[open] summary::after{content:"–"}
details p{color:var(--ink2);margin:10px 0 0}

/* footer */
footer{padding:40px 0;border-top:1px solid var(--line);color:var(--mute);font-size:14px}
footer .wrap{display:flex;gap:22px;flex-wrap:wrap;align-items:center}
footer a{color:var(--ink2);text-decoration:none}

/* forms and cards (login, account) */
.center{min-height:calc(100vh - 66px);display:grid;place-items:center;padding:40px 20px}
.card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow)}
.auth{width:min(430px,100%)}
.tabs{display:flex;padding:4px;border-radius:14px;background:#f1f2ec;margin-bottom:22px}
.tabs button{flex:1;height:40px;border:0;border-radius:11px;background:none;font:600 15px var(--font);color:var(--ink2);cursor:pointer}
.tabs button.on{background:#fff;color:var(--ink);box-shadow:0 2px 6px rgba(0,0,0,.08)}
label.f{display:flex;flex-direction:column;gap:6px;margin-bottom:14px;font-size:14px;font-weight:600;color:var(--ink2)}
input[type=email],input[type=password],input[type=text]{height:48px;padding:0 14px;border-radius:12px;border:1px solid #d6dbd3;font:16px var(--font);color:var(--ink);background:#fff;outline:none}
input:focus{border-color:var(--green2);box-shadow:0 0 0 4px rgba(43,125,99,.14)}
.chk{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink2);margin:4px 0 16px}
.chk input{margin-top:4px;width:17px;height:17px;accent-color:var(--green2)}
.auth .btn{width:100%}
.msg{padding:12px 14px;border-radius:12px;font-size:14.5px;margin:0 0 16px}
.msg.err{background:#fdecea;color:#8c2a23}.msg.ok{background:#e8f5ee;color:#1d5c40}.msg.info{background:#fdf6dc;color:#6b5510}
.small-links{display:flex;justify-content:space-between;margin-top:14px;font-size:14px}
body[data-mode="login"] .only-signup,body[data-mode="login"] .only-forgot,body[data-mode="signup"] .only-login,body[data-mode="signup"] .only-forgot,body[data-mode="forgot"] .only-login,body[data-mode="forgot"] .only-signup,body[data-mode="forgot"] .pw-row,body[data-mode="forgot"] .tabs{display:none!important}
.acct-wrap{width:min(900px,100% - 40px);margin:40px auto 80px;display:flex;flex-direction:column;gap:18px}
#acct{display:flex;flex-direction:column;gap:18px}
.acct-top{display:flex;align-items:center;gap:14px;margin-bottom:6px}
.avatar{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--violet),var(--blue));color:#fff;font:800 22px var(--disp)}
.acct-top b{display:block;font-size:17px}
.plan-tag{display:inline-block;margin-top:4px;padding:2px 10px;border-radius:999px;font:700 12px var(--font);background:#eef1ea;color:var(--ink2)}
.plan-tag.p-trial{background:#fdf6dc;color:#6b5510}.plan-tag.p-basic{background:#e8f5ee;color:#1d5c40}.plan-tag.p-pro{background:#ece7fb;color:#4b33a8}.plan-tag.p-none{background:#fdecea;color:#8c2a23}.plan-tag.p-free{background:#e3f0fb;color:#1f4f7a}
.card h3{margin:0 0 10px;font:700 18px var(--disp)}
.muted{color:var(--mute);margin:6px 0 14px}
.row{display:flex;align-items:center}.gap{gap:10px;flex-wrap:wrap}
.bar{height:10px;border-radius:5px;background:#eef1ea;overflow:hidden}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--green2),var(--yellow))}
.card.dev{border:2px dashed #c2410c}
.loader{min-height:100vh;display:grid;place-items:center;background:var(--board);color:#dfe8e2;font:500 16px var(--font);text-align:center}
.loader .logo{width:64px;height:64px;font-size:34px;border-radius:18px;margin:0 auto 18px;animation:pulse 1.4s ease-in-out infinite}
@keyframes pulse{50%{transform:scale(1.08)}}

/* legal pages */
.legal{width:min(820px,100% - 40px);margin:40px auto 80px}
.legal h1{font-size:38px}.legal h2{font-size:22px;margin-top:34px}
.legal .todo{background:#fdf6dc;border:1px dashed var(--yellow2);border-radius:10px;padding:2px 8px}

/* ---- offers: founder price, schools, invitations ---- */
body[data-ff="off"] .ff-on{display:none!important}
.prices.three{grid-template-columns:repeat(3,minmax(0,1fr));max-width:1120px}
@media (max-width:980px){.prices.three{grid-template-columns:1fr;max-width:460px}}
.price.founder{border:2px solid var(--yellow2)}
.price .left{margin:0;font-size:14px;color:var(--ink2)}.price .left b{color:var(--ink)}
.price .btn{margin-top:auto}
.badge.gold{background:var(--yellow);color:#1b2420}
.price.school .amount small:first-child{font-size:15px}
.soft-sec{background:#f1f3ec}
.spks{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;max-width:1120px;margin:0 auto}
@media (max-width:900px){.spks{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.spks{grid-template-columns:1fr}}
.spk{display:flex;flex-direction:column;gap:4px;padding:20px;border-radius:18px;background:#fff;border:1px solid var(--line)}
.spk b{font:800 18px var(--disp)}.spk span{color:var(--mute);font-size:14px}.spk em{font:800 26px var(--disp);font-style:normal;margin-top:6px}.spk em small{font:500 14px var(--font);color:var(--mute)}
.school-how{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;max-width:1120px;margin:26px auto 0}
@media (max-width:760px){.school-how{grid-template-columns:1fr}}
.school-how div{display:flex;flex-direction:column;gap:4px}.school-how span{color:var(--ink2);font-size:15px}
.invite{max-width:1120px;margin:14px auto 0;padding:12px 16px;border-radius:14px;background:#fdf6dc;border:1px solid var(--yellow2);color:#5a4a0e;font-size:15px}
.copy-row{display:flex;gap:8px;margin:10px 0}.copy-row input{flex:1;min-width:0}
.stats{display:flex;gap:18px;flex-wrap:wrap;margin:8px 0 0;color:var(--ink2);font-size:14px}.stats b{color:var(--ink);font-size:18px;margin-right:4px}
.members{list-style:none;padding:0;margin:10px 0 0;display:flex;flex-direction:column;gap:6px}
.members li{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 12px;border-radius:10px;background:#f6f7f3;font-size:14.5px}
.members button{height:32px;padding:0 12px;font-size:13px}
.plan-tag.p-school{background:#e8f5ee;color:#1d5c40}
.readonly-note{margin:0}
#extra,#acct-end{display:contents}