/* InviterLab — login & sign up */
:root{--f1:#0f2a22;--f2:#1b4636;--f3:#2f6b52;--gold:#c49a4f;--gold2:#e8c981;--ink:#1d2a24;--mut:#76796f;--line:#e6e0d3;--paper:#fffdf8;--ease:cubic-bezier(.2,.8,.2,1)}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
.auth-body{font-family:"Inter","Segoe UI",system-ui,sans-serif;color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased}
.auth-shell{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);min-height:100vh}

/* ---------- art panel ---------- */
.auth-art{position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;padding:40px 48px;color:#f6efe0;background:linear-gradient(145deg,var(--f1),var(--f2) 60%,var(--f3));--px:0;--py:0}
.auth-logo{display:inline-flex;align-items:center;gap:10px;font:700 1.35rem Georgia,serif;color:inherit;text-decoration:none;position:relative;z-index:2}
.auth-logo i{color:var(--gold2);font-style:normal;margin-left:-9px}
.auth-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--gold2),var(--gold));color:#2b2108;font:700 1.1rem Georgia,serif;box-shadow:0 8px 20px -8px rgba(232,201,129,.8)}
.orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5;animation:drift 16s ease-in-out infinite alternate}
.orb-a{width:420px;height:420px;background:var(--gold);right:-140px;top:-120px}
.orb-b{width:360px;height:360px;background:#3f9a73;left:-120px;bottom:5%;animation-delay:-5s}
.orb-c{width:240px;height:240px;background:#7a5ac8;left:45%;top:35%;opacity:.22;animation-delay:-9s}
@keyframes drift{to{transform:translate(50px,40px) scale(1.15)}}

.auth-stage{position:relative;flex:1;min-height:340px;margin:20px 0;perspective:1000px}
.card{position:absolute;display:grid;gap:6px;padding:22px 26px;border-radius:20px;background:rgba(255,253,248,.95);color:var(--ink);box-shadow:0 30px 60px -24px rgba(0,0,0,.55);text-align:center;opacity:0;transform:translate3d(calc(var(--px)*var(--d,14)*1px),calc(var(--py)*var(--d,14)*1px),0) rotate(var(--r,0deg));animation:pop .9s var(--ease) forwards,bob 7s ease-in-out infinite;transition:transform .35s var(--ease)}
.card small{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold)}
.card strong{font:600 1.7rem/1.1 Georgia,serif}
.card strong em{color:var(--gold);font-style:italic}
.card span{color:var(--mut);font-size:.85rem}
.card-1{left:50%;top:6%;width:250px;margin-left:-140px;--r:-4deg;--d:22;animation-delay:.3s,1.2s}
.card-2{right:4%;top:38%;width:210px;--r:5deg;--d:-16;background:linear-gradient(160deg,#fff4dc,#fbe2e4);animation-delay:.55s,1.5s}
.card-3,.card-4{padding:10px 16px;border-radius:999px;grid-auto-flow:column}
.card-3{left:3%;top:52%;--d:-26;animation-delay:.8s,1.8s}
.card-4{left:22%;bottom:6%;--d:20;animation-delay:1.05s,2.1s}
.rsvp-chip{display:flex;align-items:center;gap:8px;color:var(--ink)!important;font-weight:600;font-size:.86rem!important;white-space:nowrap}
.rsvp-chip b{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--f2);color:var(--gold2);font-size:.75rem}
.rsvp-chip em{font-style:normal;color:var(--gold)}
.seal{position:absolute;right:-12px;bottom:-14px;width:44px;height:44px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#d56a82,#8f2a46);box-shadow:0 8px 16px -6px rgba(143,42,70,.7)}
@keyframes pop{from{opacity:0;margin-top:40px}to{opacity:1;margin-top:0}}
@keyframes bob{50%{translate:0 -12px}}
.spark{position:absolute;width:6px;height:6px;border-radius:50%;background:var(--gold2);box-shadow:0 0 14px 3px rgba(232,201,129,.8);animation:twinkle 3s ease-in-out infinite}
.s1{left:12%;top:12%}.s2{right:18%;top:20%;animation-delay:-1s}.s3{right:30%;bottom:14%;animation-delay:-2s}.s4{left:48%;bottom:30%;animation-delay:-.5s}
@keyframes twinkle{50%{opacity:.15;transform:scale(.4)}}
.auth-quote{position:relative;z-index:2;max-width:430px}
.auth-quote p{margin:0 0 8px;font:600 clamp(1.6rem,2.4vw,2.3rem)/1.15 Georgia,serif}
.auth-quote small{color:#cfdcd3;font-size:.95rem;line-height:1.5;display:block}

/* ---------- form panel ---------- */
.auth-panel{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:70px 28px 40px;background:radial-gradient(900px 500px at 100% 0,#f6ecd6 0,transparent 60%),var(--paper)}
.auth-back{position:absolute;top:26px;left:30px;color:var(--mut);font-size:.86rem;text-decoration:none;transition:color .2s,transform .2s}
.auth-back:hover{color:var(--ink);transform:translateX(-3px)}
.auth-card{width:100%;max-width:430px;animation:rise .8s var(--ease) both}
.auth-card>*{animation:rise .7s var(--ease) both}
.auth-card>*:nth-child(2){animation-delay:.05s}.auth-card>*:nth-child(3){animation-delay:.12s}.auth-card>*:nth-child(4){animation-delay:.18s}.auth-card>*:nth-child(5){animation-delay:.24s}.auth-card>*:nth-child(6){animation-delay:.3s}.auth-card>*:nth-child(7){animation-delay:.36s}
@keyframes rise{from{opacity:0;transform:translateY(18px)}}
.auth-logo-mobile{display:none;color:var(--f1);margin-bottom:22px}
.eyebrow{margin:0 0 8px;font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}
.auth-head h1{margin:0;font:600 clamp(1.9rem,3.2vw,2.5rem)/1.1 Georgia,serif;color:var(--f1)}
.auth-head h1 em{color:var(--gold);font-style:italic}
.sub{margin:10px 0 26px;color:var(--mut);line-height:1.5}

.google-btn{display:flex;align-items:center;justify-content:center;gap:12px;height:54px;border-radius:16px;background:#fff;border:1.5px solid var(--line);color:var(--ink);font-weight:650;font-size:.97rem;text-decoration:none;box-shadow:0 2px 0 rgba(0,0,0,.03);transition:transform .25s var(--ease),box-shadow .25s,border-color .25s}
.google-btn:hover{transform:translateY(-2px);border-color:#4285f4;box-shadow:0 16px 30px -16px rgba(66,133,244,.55)}
.google-btn:active{transform:translateY(0)}
.divider{display:flex;align-items:center;gap:14px;margin:22px 0;color:var(--mut);font-size:.8rem}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,transparent,var(--line))}
.divider::after{background:linear-gradient(270deg,transparent,var(--line))}

.auth-form{display:grid;gap:16px}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{position:relative}
.field input{width:100%;height:58px;padding:24px 46px 8px 16px;border:1.5px solid var(--line);border-radius:16px;background:#fff;font:inherit;font-size:1rem;color:var(--ink);outline:0;transition:border-color .25s,box-shadow .25s}
.field input:hover{border-color:#d7cdb6}
.field input:focus{border-color:var(--gold);box-shadow:0 0 0 4px rgba(196,154,79,.18)}
.field label{position:absolute;left:17px;top:19px;color:var(--mut);pointer-events:none;transform-origin:left top;transition:transform .25s var(--ease),color .25s}
.field input:focus+label,.field input:not(:placeholder-shown)+label{transform:translateY(-12px) scale(.76);color:var(--gold)}
.field input:-webkit-autofill+label{transform:translateY(-12px) scale(.76)}
.field .line{position:absolute;left:16px;right:16px;bottom:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--gold),var(--gold2));transform:scaleX(0);transition:transform .35s var(--ease)}
.field input:focus~.line{transform:scaleX(1)}
.field.has-error input{border-color:#cf5a74;background:#fff8f9}
.field.has-error .line{background:#cf5a74;transform:scaleX(1)}
.err{margin:6px 4px 0;color:#c0405e;font-size:.8rem;animation:shake .4s}
@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.eye{position:absolute;right:8px;top:9px;width:40px;height:40px;display:grid;place-items:center;border:0;border-radius:12px;background:none;color:var(--mut);cursor:pointer;transition:background .2s,color .2s}
.eye:hover{background:#f4efe3;color:var(--ink)}
.eye .slash{stroke-dasharray:26;stroke-dashoffset:0;transition:stroke-dashoffset .3s}
.eye.is-on .slash{stroke-dashoffset:26}
.pair .field input{padding-right:44px}

.meter{display:flex;align-items:center;gap:12px;margin-top:-4px}
.meter .bars{display:flex;gap:4px;flex:none}
.meter i{width:34px;height:5px;border-radius:5px;background:var(--line);transition:background .3s}
.meter small{color:var(--mut);font-size:.78rem}
.meter[data-level="0"] i:nth-child(-n+1),.meter[data-level="1"] i:nth-child(-n+1){background:#d9534f}
.meter[data-level="2"] i:nth-child(-n+2){background:#e8a33d}
.meter[data-level="3"] i:nth-child(-n+3){background:#9ac04a}
.meter[data-level="4"] i{background:#2f8a5f}

.submit{position:relative;overflow:hidden;height:56px;border:0;border-radius:16px;cursor:pointer;font:inherit;font-weight:700;font-size:1rem;color:#fff;background:linear-gradient(135deg,var(--f2),var(--f3));box-shadow:0 18px 30px -16px rgba(27,70,54,.85);transition:transform .25s var(--ease),box-shadow .25s}
.submit::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.28) 50%,transparent 70%);transform:translateX(-120%);transition:transform .7s}
.submit:hover{transform:translateY(-2px);box-shadow:0 24px 36px -16px rgba(27,70,54,.9)}
.submit:hover::after{transform:translateX(120%)}
.submit:active{transform:translateY(0) scale(.99)}
.spinner{position:absolute;left:50%;top:50%;width:22px;height:22px;margin:-11px;border:3px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;opacity:0;animation:spin .7s linear infinite paused}
.submit.is-loading .label{opacity:0}
.submit.is-loading .spinner{opacity:1;animation-play-state:running}
@keyframes spin{to{transform:rotate(360deg)}}
.legal{margin:0;text-align:center;color:var(--mut);font-size:.78rem}
.legal a,.switch a{color:var(--f2);font-weight:700}
.switch{margin:24px 0 0;text-align:center;color:var(--mut)}
.switch a{text-decoration:none;background:linear-gradient(var(--gold),var(--gold)) 0 100%/0 2px no-repeat;transition:background-size .3s}
.switch a:hover{background-size:100% 2px}
.auth-alert{margin-bottom:16px;padding:13px 16px;border-radius:14px;font-size:.9rem;background:#fff1f3;color:#a3314b;border:1px solid #f5ccd5;animation:shake .4s}
.auth-alert.success,.auth-alert.info{background:#eef8f1;color:#25664a;border-color:#cfe8d8;animation:none}
.auth-foot{margin:28px 0 0;font-size:.8rem}
.auth-foot a{color:var(--mut)}

@media (max-width:900px){
  .auth-shell{grid-template-columns:1fr}
  .auth-art{display:none}
  .auth-logo-mobile{display:inline-flex}
  .auth-panel{justify-content:flex-start;padding-top:80px;min-height:100vh}
}
@media (max-width:460px){.pair{grid-template-columns:1fr}.auth-back{left:20px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.card{opacity:1}}