:root{--ink:#071827;--muted:#5d6b78;--teal:#08a6ad;--teal-dark:#078b93;--soft:#effbfc;--line:#d7e1e5;--danger:#d92d3a;--success:#247b59;--focus:0 0 0 4px rgba(8,166,173,.22)}
*{box-sizing:border-box}
body{margin:0;min-width:320px;font:16px/1.5 Inter,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--soft)}
a{color:var(--teal-dark);font-weight:800}
.auth-layout{min-height:100dvh;display:grid;grid-template-columns:1fr 1fr}
.auth-form-side,.auth-message-side{display:grid;align-items:center;padding:46px}
.auth-inner{width:min(100%,430px);margin:auto}.auth-inner-wide{width:min(100%,460px)}
.auth-brand{display:flex;align-items:center;gap:10px;width:max-content;margin-bottom:34px;color:var(--ink);font-size:20px;font-weight:900;text-decoration:none}
.auth-mark{width:35px;height:35px;display:grid;place-items:center;border-radius:10px;background:var(--teal);color:white;font-size:13px}
.auth-card{padding:32px;border:1px solid var(--line);border-radius:16px;background:white;box-shadow:0 16px 45px rgba(7,24,39,.08)}
.auth-card h1{margin:0 0 5px;font-size:29px;line-height:1.2;letter-spacing:-.035em}
.auth-subtitle{margin:0 0 25px;color:var(--muted)}
label{display:block;margin:0 0 16px;font-size:14px;font-weight:750}
input{width:100%;min-height:47px;margin-top:6px;padding:11px 13px;border:1px solid #cfdadd;border-radius:9px;background:white;color:var(--ink);font:inherit;box-shadow:0 1px 3px rgba(7,24,39,.07)}
input:focus,button:focus-visible,a:focus-visible{outline:none;border-color:var(--teal);box-shadow:var(--focus)}
button{width:100%;min-height:47px;border:0;border-radius:9px;background:var(--teal);color:white;font:inherit;font-weight:850;cursor:pointer;transition:background .18s ease}
button:hover{background:var(--teal-dark)}button:disabled{cursor:wait;opacity:.65}
.auth-status{min-height:22px;margin:9px 0 0;color:var(--danger);font-size:14px}.auth-status.success{color:var(--success)}
.auth-switch{margin:18px 0 0;text-align:center;color:var(--muted);font-size:14px}
.auth-message-side{position:relative;overflow:hidden;background:linear-gradient(145deg,#0796a3,#0cb8b5);color:white}
.auth-message-side:before,.auth-message-side:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.15);border-radius:50%}
.auth-message-side:before{width:520px;height:520px;right:-290px;top:-270px}.auth-message-side:after{width:360px;height:360px;left:-220px;bottom:-210px}
.auth-message-inner{position:relative;z-index:1;width:min(100%,610px);min-height:calc(100dvh - 92px);display:flex;flex-direction:column;justify-content:space-between;margin:auto}
.auth-message-side .auth-brand{margin:0;color:var(--ink)}
.auth-message-side blockquote,.auth-message-side h2{max-width:620px;margin:0;font-size:clamp(28px,3vw,40px);line-height:1.18;letter-spacing:-.035em;font-weight:850}
.auth-message-side p{font-weight:650;opacity:.9}.auth-message-side ul{display:grid;gap:10px;margin:20px 0 0;padding:0;list-style:none}.auth-message-side li:before{content:"✓";margin-right:10px}.auth-copyright{font-size:13px;opacity:.82}
@media(max-width:820px){.auth-layout{grid-template-columns:1fr}.auth-message-side{display:none}.auth-form-side{padding:27px 18px}.auth-card{padding:27px 22px}.auth-inner{max-width:480px}}
@media(prefers-reduced-motion:reduce){*{transition-duration:.01ms!important}}

/* Opsender developer identity */
:root{--ink:#f4f8f7;--muted:#9aa9a7;--teal:#21d4c2;--teal-dark:#45e3d3;--soft:#090d10;--line:#263136;--focus:0 0 0 4px rgba(33,212,194,.24)}
body{background:#090d10;color:var(--ink)}.auth-form-side{background:#090d10}.auth-message-side{background:radial-gradient(circle at 72% 28%,rgba(33,212,194,.18),transparent 34%),linear-gradient(145deg,#0d171a,#07100f)}.auth-message-side:before,.auth-message-side:after{border-color:rgba(33,212,194,.16)}.auth-brand,.auth-message-side .auth-brand{color:#fff}.auth-mark{border:1px solid var(--teal);background:transparent;color:var(--teal)}.auth-card{border-color:var(--line);background:#10161a;box-shadow:0 24px 70px rgba(0,0,0,.32)}label{color:#d7e1df}input{border-color:#344247;background:#0b1114;color:#fff;box-shadow:none}input::placeholder{color:#758581}input:focus{background:#0d1518}button{background:var(--teal);color:#05201d}button:hover{background:var(--teal-dark)}.auth-switch{color:var(--muted)}.auth-switch a{color:var(--teal)}

/* Product-first access experience */
:root{--teal:#25d366;--teal-dark:#1fb857;--focus:0 0 0 4px rgba(37,211,102,.25)}
.auth-layout{grid-template-columns:minmax(430px,.9fr) minmax(520px,1.1fr)}.auth-form-side{background:#f7f9f6;color:#111b14}.auth-brand{color:#111b14}.auth-mark{border:0;background:#25d366;color:#092413}.auth-card{border-color:#dce5d7;background:#fff;box-shadow:0 24px 70px rgba(19,42,25,.1)}.auth-card h1{font-size:34px}label{color:#253229}input{border-color:#cfdacd;background:#fff;color:#111b14;box-shadow:0 1px 3px rgba(17,27,20,.06)}input::placeholder{color:#7b887e}input:focus{background:#fff}.auth-subtitle,.auth-switch{color:#667268}.auth-switch a{color:#117f3b}button{background:#25d366;color:#092413}button:hover{background:#1fb857}.auth-message-side{background:linear-gradient(180deg,rgba(7,13,10,.12),rgba(7,13,10,.86)),url('/public/opsender-team-campaigns.png') center/cover;color:#fff}.auth-message-side:before{inset:0;width:auto;height:auto;border:0;border-radius:0;background:linear-gradient(135deg,rgba(37,211,102,.16),transparent 48%)}.auth-message-side:after{display:none}.auth-message-side .auth-brand{color:#fff}.auth-message-side .auth-mark{background:#25d366;color:#092413}.auth-message-inner{min-height:calc(100dvh - 92px)}.auth-message-side blockquote,.auth-message-side h2{text-shadow:0 2px 24px rgba(0,0,0,.35)}.auth-message-side p,.auth-message-side li{color:#e4ede7}.auth-message-side li:before{color:#25d366}
@media(max-width:980px){.auth-layout{grid-template-columns:1fr 1fr}.auth-form-side,.auth-message-side{padding:32px}}@media(max-width:820px){.auth-layout{grid-template-columns:1fr}.auth-message-side{display:none}.auth-form-side{padding:27px 18px}.auth-card{padding:27px 22px}.auth-inner{max-width:480px}}