:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --green: #72c94b;
  --green-soft: #9bdd7a;
  --gold: #d9b85f;
  --text: #eff5f0;
  --muted: #93a097;
  --line: rgba(135, 166, 141, 0.18);
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; min-height: 100vh; color: var(--text); background: #071009; }
.login-shell { display: grid; min-height: 100vh; grid-template-columns: minmax(460px, 1.08fr) minmax(430px, .92fr); }
.brand-panel { position: relative; display: flex; align-items: center; overflow: hidden; padding: 64px clamp(42px, 6vw, 100px); border-right: 1px solid var(--line); background: radial-gradient(circle at 23% 23%, rgba(77,145,49,.17), transparent 34%), linear-gradient(145deg,#08130b 0%,#050a07 80%); }
.brand-panel::before { position: absolute; inset: 0; background: linear-gradient(110deg, transparent 55%, rgba(91,171,55,.05)); content: ""; }
.brand-content { position: relative; z-index: 2; width: min(560px, 100%); margin: 0 auto; text-align: center; }
.institution { display: flex; align-items: center; justify-content: center; gap: 16px; margin-bottom: 54px; color: #c9d5cb; font-size: 14px; font-weight: 800; letter-spacing: 1.45px; text-transform: uppercase; }
.institution img { width: 64px; height: 64px; object-fit: contain; }
.sitra-logo { display: block; width: min(500px, 92%); height: auto; margin: 0 auto 30px; }
.eyebrow, .access-eyebrow { margin: 0; color: var(--green-soft); font-size: 12px; font-weight: 850; letter-spacing: 1.8px; }
h1 { max-width: 610px; margin: 15px 0 20px; font-size: clamp(40px, 4.6vw, 72px); line-height: .99; letter-spacing: -3px; }
.brand-copy { max-width: 560px; margin: 0; color: #aab7ad; font-size: 17px; line-height: 1.65; }
.educational-badge { display: flex; align-items: center; gap: 12px; width: fit-content; max-width: 560px; margin: 28px auto 0; padding: 12px 15px; border: 1px solid rgba(114,201,75,.25); border-radius: 10px; color: #b9c7bc; background: rgba(114,201,75,.065); text-align: left; }
.educational-badge > span { color: var(--green); font-size: 22px; }
.educational-badge p { margin: 0; font-size: 12px; line-height: 1.45; }
.grid-decoration { position: absolute; right: -80px; bottom: -90px; width: 520px; height: 520px; opacity: .19; transform: rotate(-9deg); background-image: linear-gradient(rgba(114,201,75,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(114,201,75,.18) 1px,transparent 1px); background-size: 34px 34px; mask-image: radial-gradient(circle,#000,transparent 68%); }
.access-panel { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 45px; background: radial-gradient(circle at 70% 20%, rgba(64,112,48,.09), transparent 30%), #0b110d; }
.access-card { width: min(430px, 100%); padding: 38px; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(145deg,rgba(22,31,24,.98),rgba(12,18,14,.99)); box-shadow: 0 30px 80px rgba(0,0,0,.38); }
.access-mark { display: grid; width: 50px; height: 50px; margin-bottom: 22px; place-items: center; border: 1px solid rgba(114,201,75,.28); border-radius: 13px; color: var(--green-soft); background: rgba(114,201,75,.09); }
.access-mark svg { width: 27px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.6; }
.access-card h2 { margin: 9px 0 8px; font-size: 31px; letter-spacing: -.8px; }
.access-copy { margin: 0 0 28px; color: var(--muted); font-size: 14px; line-height: 1.55; }
form { display: grid; gap: 18px; }
label > span:first-child { display: block; margin: 0 0 7px; color: #bcc8bf; font-size: 11px; font-weight: 800; letter-spacing: .8px; text-transform: uppercase; }
.input-wrap { position: relative; display: block; }
.input-wrap svg { position: absolute; top: 50%; left: 14px; width: 19px; transform: translateY(-50%); fill: none; stroke: #76847a; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.7; }
input { width: 100%; height: 50px; padding: 0 15px 0 44px; border: 1px solid rgba(143,166,148,.25); border-radius: 10px; color: var(--text); outline: none; background: #0b120d; font: inherit; font-size: 14px; transition: 160ms ease; }
input:focus { border-color: rgba(114,201,75,.7); box-shadow: 0 0 0 3px rgba(114,201,75,.1); }
input:-webkit-autofill { -webkit-text-fill-color: var(--text); box-shadow: 0 0 0 1000px #0b120d inset; }
button { display: flex; align-items: center; justify-content: center; gap: 14px; height: 51px; margin-top: 5px; border: 1px solid #75c951; border-radius: 10px; color: #071008; background: linear-gradient(135deg,#85da60,#65b842); cursor: pointer; font: inherit; font-size: 14px; font-weight: 850; transition: 160ms ease; }
button:hover { color: #171305; background: var(--gold); border-color: var(--gold); transform: translateY(-1px); box-shadow: 0 10px 25px rgba(114,201,75,.17); }
button span { font-size: 20px; }
.access-divider { display: flex; align-items: center; gap: 12px; margin: 21px 0 15px; color: #68736b; font-size: 10px; text-transform: uppercase; letter-spacing: .65px; }
.access-divider::before, .access-divider::after { height: 1px; flex: 1; background: var(--line); content: ""; }
.guest-form { display: block; }
.guest-button { width: 100%; margin: 0; border-color: rgba(135,166,141,.32); color: #d8e2da; background: rgba(255,255,255,.025); }
.guest-button:hover { border-color: var(--gold); color: var(--gold); background: rgba(217,184,95,.075); box-shadow: none; }
.guest-button svg { width: 19px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.7; }
.login-error { margin: 0 0 18px; padding: 11px 13px; border: 1px solid rgba(234,102,102,.35); border-radius: 9px; color: #ffb1b1; background: rgba(234,102,102,.09); font-size: 12px; line-height: 1.45; }
.security-note { display: flex; align-items: center; gap: 11px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); }
.security-note p { margin: 0; color: #748078; font-size: 10px; line-height: 1.5; }
.security-note strong { color: #a9b6ac; font-size: 11px; }
.status-dot { width: 8px; height: 8px; flex: 0 0 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 11px rgba(114,201,75,.7); }
.footer-copy { margin: 24px 0 0; color: #59635c; font-size: 10px; letter-spacing: .4px; text-align: center; }

@media (max-width: 950px) {
  .login-shell { grid-template-columns: 1fr; }
  .brand-panel { min-height: 390px; padding: 42px; border-right: 0; border-bottom: 1px solid var(--line); }
  .institution { margin-bottom: 30px; }
  .sitra-logo { width: min(360px, 75%); }
  h1 { font-size: 44px; }
  .access-panel { padding: 40px 22px; }
}

@media (max-width: 560px) {
  .brand-panel { min-height: 330px; padding: 28px 22px; }
  .institution { gap: 11px; font-size: 11px; }
  .institution img { width: 46px; height: 46px; }
  h1 { font-size: 36px; letter-spacing: -1.8px; }
  .brand-copy { font-size: 14px; }
  .educational-badge { margin-top: 25px; }
  .access-card { padding: 28px 22px; }
}