:root{
    --ink:#2a2012;--bg:#fff8ec;--paper:#fffdf8;--dark:#241a0e;
    --honey:#ffc53d;--honey-deep:#eda600;--honey-soft:#fff2bf;
    --leaf:#28a56b;--leaf-deep:#1c7a4f;--leaf-soft:#e4f4ec;
    --line:#efe3cf;--muted:#9a8a6a;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  body{font-family:'Bricolage Grotesque',sans-serif;color:var(--ink);
    background:
      radial-gradient(120% 80% at 85% 0%,#fff2cf 0%,rgba(255,242,207,0) 55%),
      radial-gradient(120% 80% at 0% 100%,#eef6ef 0%,rgba(238,246,239,0) 55%),
      var(--bg);
    -webkit-font-smoothing:antialiased;min-height:100vh;display:grid;place-items:center;padding:28px}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit;cursor:pointer}

  .container{position:relative;width:min(1060px,96vw);height:840px;background:var(--paper);
    border:1px solid var(--line);border-radius:30px;overflow:hidden;
    box-shadow:0 60px 110px -46px rgba(120,90,0,.5)}

  .langs{position:absolute;top:22px;right:24px;display:flex;gap:8px;z-index:120}
  .lang{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--line);background:var(--paper);display:grid;place-items:center;transition:transform .14s,box-shadow .14s,border-color .14s;overflow:hidden}
  .lang:hover{transform:translateY(-2px)}
  .lang.active{border-color:var(--honey-deep);box-shadow:0 0 0 3px var(--honey-soft)}
  .lang img{width:100%;height:100%;object-fit:cover}

  .form-container{position:absolute;top:0;height:100%;width:50%;display:flex;align-items:center;justify-content:center;padding:44px 52px;transition:all .62s ease-in-out}
  .sign-in{left:0;z-index:2}
  .sign-up{left:0;z-index:1;opacity:0}
  .container.right-panel-active .sign-in{transform:translateX(100%);opacity:0;z-index:1}
  .container.right-panel-active .sign-up{transform:translateX(100%);opacity:1;z-index:5;animation:reveal .62s}
  @keyframes reveal{0%,40%{opacity:0}100%{opacity:1}}

  form{width:100%;max-width:362px}
  form h2{font-size:30px;font-weight:800;letter-spacing:-.03em}
  form .sub{color:var(--muted);font-size:14px;margin-top:7px}

  .or{display:flex;align-items:center;gap:12px;margin:14px 0 2px;color:var(--muted);font-size:11px;font-family:'Space Mono',monospace;letter-spacing:.1em;text-transform:uppercase}
  .or::before,.or::after{content:"";height:1px;flex:1;background:var(--line)}

  .field{margin-top:13px}
  .field label{display:block;font-family:'Space Mono',monospace;font-size:10.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#7a6c48;margin-bottom:6px}
  .inwrap{position:relative;display:flex;align-items:center}
  .lead-ic{position:absolute;left:14px;display:grid;place-items:center;color:#b6a888;pointer-events:none}
  .lead-ic svg{width:17px;height:17px;display:block}
  .field input{width:100%;padding:12px 14px 12px 42px;border:1.5px solid var(--line);border-radius:12px;font-family:inherit;font-size:14.5px;background:#fdf6e6;color:var(--ink);transition:border-color .15s,box-shadow .15s}
  .field input::placeholder{color:#bdae90}
  .field input:focus{outline:none;border-color:var(--honey-deep);box-shadow:0 0 0 4px var(--honey-soft)}
  .inwrap:has(.eye) input{padding-right:46px}
  .urlwrap{display:flex;align-items:center;border:1.5px solid var(--line);border-radius:12px;overflow:hidden;background:#fdf6e6;transition:border-color .15s,box-shadow .15s}
  .urlwrap:focus-within{border-color:var(--honey-deep);box-shadow:0 0 0 4px var(--honey-soft)}
  .urlwrap .pre{font-family:'Space Mono',monospace;font-size:12.5px;color:var(--muted);padding:12px 2px 12px 13px;white-space:nowrap}
  .urlwrap input{border:none;background:transparent;padding-left:2px;box-shadow:none!important}
  .eye{position:absolute;right:7px;top:50%;transform:translateY(-50%);width:34px;height:34px;border:none;background:transparent;border-radius:8px;display:grid;place-items:center;color:var(--muted)}
  .eye:hover{color:var(--ink);background:var(--honey-soft)}
  .eye svg{width:19px;height:19px;display:block}
  .hint{font-size:11px;color:var(--muted);margin-top:5px;line-height:1.4}
  .url-line{font-size:11.5px;color:var(--leaf-deep);margin-top:3px;font-weight:600}

  .meta{display:flex;align-items:center;justify-content:space-between;margin-top:14px;gap:10px;flex-wrap:wrap}
  .remember{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#6b5d40;cursor:pointer;user-select:none}
  .remember input{position:absolute;opacity:0;width:0;height:0}
  .box{width:19px;height:19px;border-radius:6px;border:1.5px solid var(--line);background:#fdf6e6;display:grid;place-items:center;transition:background .15s,border-color .15s}
  .box svg{width:12px;height:12px;color:var(--ink);opacity:0;transform:scale(.6);transition:opacity .15s,transform .15s}
  .remember input:checked + .box{background:var(--honey);border-color:var(--honey-deep)}
  .remember input:checked + .box svg{opacity:1;transform:scale(1)}
  .forgot{font-size:13px;font-weight:700;color:var(--leaf-deep);border-bottom:2px solid var(--honey)}
  .forgot:hover{color:var(--ink)}

  .submit{width:100%;margin-top:18px;background:var(--honey);color:var(--ink);border:none;border-radius:999px;padding:14px;font-weight:800;font-size:15.5px;box-shadow:0 7px 0 -1px rgba(237,166,0,.4);transition:transform .1s,filter .15s;display:inline-flex;gap:8px;align-items:center;justify-content:center}
  .submit:hover{filter:brightness(.98)}
  .submit:active{transform:translateY(1px)}
  .submit:disabled{opacity:.6;cursor:not-allowed}
  .switch-line{display:none;text-align:center;font-size:13.5px;color:#6b5d40;margin-top:14px}
  .switch-line .link-btn{font-weight:800;color:var(--leaf-deep);border:none;background:none;border-bottom:2px solid var(--honey);padding:0;cursor:pointer}
  .trust{display:flex;justify-content:center;gap:18px;margin-top:16px;font-size:12px;font-weight:600;color:#7a6c48}
  .trust span{display:flex;align-items:center;gap:5px}
  .form-error{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;padding:10px 14px;border-radius:10px;font-size:13px;margin-top:12px;display:none}
  .form-success{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534;padding:10px 14px;border-radius:10px;font-size:13px;margin-top:12px;display:none}
  .resend-box{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af;padding:10px 14px;border-radius:10px;font-size:13px;margin-top:10px;display:none}
  .resend-box a{color:#005FCC;font-weight:700;text-decoration:underline}

  /* Overlay (dark panel with teacher cards) */
  .overlay-container{position:absolute;top:0;left:50%;width:50%;height:100%;overflow:hidden;z-index:100;transition:transform .62s ease-in-out}
  .container.right-panel-active .overlay-container{transform:translateX(-100%)}
  .overlay{position:relative;width:100%;height:100%;color:#f3ead6;display:flex;flex-direction:column;justify-content:space-between;padding:38px 40px;
    background:
      radial-gradient(120% 90% at 0% 0%,#3a2a16 0%,rgba(58,42,22,0) 55%),
      radial-gradient(120% 90% at 100% 100%,#1c130a 0%,rgba(28,19,10,0) 60%),
      var(--dark)}
  .bgfx{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden}
  .bgfx .blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.42;mix-blend-mode:screen}
  .bgfx .b-a{width:420px;height:420px;background:#ffb52e;left:-120px;top:-120px;animation:meshA 18s ease-in-out infinite}
  .bgfx .b-b{width:360px;height:360px;background:#19a866;right:-110px;top:30%;animation:meshB 23s ease-in-out infinite}
  .bgfx .b-c{width:400px;height:400px;background:#f0820f;left:18%;bottom:-150px;animation:meshC 21s ease-in-out infinite}
  .bgfx .dots{position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1.4px);background-size:24px 24px;
    -webkit-mask:radial-gradient(130% 110% at 50% 35%,#000 0%,transparent 72%);mask:radial-gradient(130% 110% at 50% 35%,#000 0%,transparent 72%)}

  .ov-top{position:relative;z-index:2;display:flex;flex-direction:column;gap:6px}
  .logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:19px;letter-spacing:-.02em;color:#fff}
  .logo .mark{width:30px;height:30px;border-radius:9px;background:var(--honey);display:grid;place-items:center;font-size:16px;box-shadow:0 6px 0 -1px rgba(237,166,0,.45)}
  .slogan{font-family:'Space Mono',monospace;font-size:10px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--honey);padding-left:39px}

  .stack{position:relative;z-index:2;flex:1;margin:10px 0}
  .tcard{position:absolute;left:50%;width:280px;margin-left:-140px;background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:18px 20px;box-shadow:0 30px 56px -24px rgba(0,0,0,.75);color:var(--ink)}
  .tcard.c1{top:4%;transform:translateX(-70px) rotate(-5deg);z-index:1}
  .tcard.c2{top:32%;transform:translateX(66px) rotate(4.5deg);z-index:2}
  .tcard.c3{top:60%;transform:translateX(-24px) rotate(-2deg);z-index:3}
  .tc-top{display:flex;align-items:center;gap:13px}
  .tc-av{width:52px;height:52px;border-radius:50%;flex:0 0 52px;display:grid;place-items:center;font-weight:800;font-size:14px;color:#8a6a10;overflow:hidden;background:var(--honey-soft)}
  .tc-av img{width:100%;height:100%;object-fit:cover}
  
  .tc-name{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--ink)}
  .tc-lang{font-family:'Space Mono',monospace;font-size:11px;color:var(--muted);margin-top:3px;letter-spacing:.03em}
  .tc-row{display:flex;align-items:center;gap:9px;margin-top:15px}
  .tc-mot{font-size:12px;font-weight:600;color:#6b5a3a;letter-spacing:.02em}
  .tc-mot .beat{font-style:normal;display:inline-block;animation:heartbeat 1.2s ease-in-out infinite}
  @keyframes heartbeat{0%,100%{transform:scale(1)}14%{transform:scale(1.3)}28%{transform:scale(1)}42%{transform:scale(1.15)}}
  .tc-book{background:var(--leaf);color:#fff;font-weight:800;border-radius:999px;padding:8px 15px;font-size:12.5px}
  .tc-price{background:var(--honey-soft);color:#8a6a10;font-weight:700;border-radius:999px;padding:7px 12px;font-size:11.5px}

  .ov-foot{position:relative;z-index:2}
  .ov-foot h2{color:#fff;font-size:clamp(26px,2.7vw,36px);line-height:1.04;letter-spacing:-.035em;font-weight:800;max-width:15ch}
  .ov-foot h2 .hl{white-space:nowrap;color:var(--ink);background:var(--honey);padding:.02em .16em;border-radius:7px;display:inline-block;transform:rotate(-1.4deg);box-shadow:0 5px 0 -1px rgba(237,166,0,.45)}
  .ov-prompt{color:#cdbf9f;font-size:13.5px;line-height:1.5;margin-top:13px;max-width:42ch}
  .ghost-btn{margin-top:16px;background:transparent;color:#fff;border:1.6px solid rgba(255,255,255,.4);border-radius:999px;padding:11px 22px;font-weight:800;font-size:14px;transition:background .15s,border-color .15s}
  .ghost-btn:hover{background:rgba(255,255,255,.1);border-color:#fff}
  .dots3{display:flex;gap:7px;margin-top:18px}
  .dots3 i{width:26px;height:5px;border-radius:999px;background:rgba(255,255,255,.2);transition:width .3s,background .3s}
  .dots3 i.on{width:38px;background:var(--honey)}

  a:focus-visible,button:focus-visible,.lang:focus-visible{outline:3px solid var(--honey-deep);outline-offset:2px;border-radius:6px}
  @keyframes meshA{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(70px,55px) scale(1.16)}}
  @keyframes meshB{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-60px,-45px) scale(1.1)}}
  @keyframes meshC{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(46px,-60px) scale(1.2)}}

  @media(max-width:900px){
    body{padding:16px;align-items:flex-start}
    .container{display:flex;flex-direction:column;width:100%;height:auto;border-radius:24px}
    .overlay-container{order:-1;position:static;width:100%;height:auto;transform:none!important}
    .overlay{height:auto;padding:30px 26px;gap:22px}
    .stack{display:none}
    .ov-foot h2{font-size:24px}
    .form-container{position:static;width:100%;transform:none!important;opacity:1!important;padding:30px 24px}
    .sign-up{display:none}
    .container.right-panel-active .sign-in{display:none}
    .container.right-panel-active .sign-up{display:block}
    .langs{position:static;margin-bottom:14px}
    .switch-line{display:block}
  }
  .tcard{transition:opacity .4s ease, transform .4s ease}
  .tcard.swap-out{opacity:0;transform:translateX(-82px) rotate(-6deg) scale(.9)!important}
  .tcard.c1.swap-out{transform:translateX(-140px) rotate(-10deg) scale(.9)!important}
  .tcard.c2.swap-out{transform:translateX(140px) rotate(10deg) scale(.9)!important}
  .tcard.c3.swap-out{transform:translateX(-80px) rotate(-8deg) scale(.9)!important}
  @media(prefers-reduced-motion:reduce){*{animation:none!important;transition-duration:.001s!important}}
  .modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:999;align-items:center;justify-content:center;padding:24px}
  .modal-box{background:var(--paper);border-radius:24px;padding:40px;max-width:440px;width:100%;box-shadow:0 20px 60px rgba(0,0,0,.2)}
  .modal-title{font-size:22px;font-weight:800;margin-bottom:8px}
  .modal-sub{font-size:14px;color:var(--muted);margin-bottom:24px}
  .modal-actions{display:flex;gap:10px;margin-top:18px}
  .modal-msg{margin-top:14px;font-size:13px;display:none;padding:10px 14px;border-radius:10px}
  .modal-emoji{text-align:center;margin-bottom:20px;font-size:48px}
  .btn-cancel{padding:14px 24px;background:var(--line);border:none;border-radius:999px;font-size:15px;cursor:pointer;font-weight:700;color:var(--ink)}
  .center{text-align:center}
  .fill{flex:1}
  .mt20{margin-top:20px}
  .resend-line{display:block;margin-top:4px;font-size:12px}
  .logo-img{height:32px;width:auto}
  .tc-av.ring-1,.tc-av.ring-3{box-shadow:0 0 0 3px #ffc53d}
  .tc-av.ring-2{box-shadow:0 0 0 3px #28a56b}