:root{--navy:#102445;--blue:#2563eb;--line:#e6ebf2;--muted:#718096;--bg:#f4f7fb;--green:#168254;--red:#c0392b}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:#172238;font-family:Arial,"Noto Sans Thai",sans-serif}
.login{min-height:100vh;display:grid;grid-template-columns:1.08fr .92fr;background:#fff}
.login-visual{background:linear-gradient(145deg,#0c1f3e,#174a9c 70%,#2469da);color:#fff;padding:48px 8vw 34px;display:flex;flex-direction:column;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px}
.mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(145deg,#4f8cff,#2c64df);font-weight:800;font-size:22px}
.login-visual h1{font-size:clamp(34px,4vw,58px);line-height:1.2;margin:20px 0}
.login-visual p{color:#c6d6f2;line-height:1.8}
.points{display:grid;gap:12px;margin-top:30px;color:#dfe9fa;font-size:13px}
.form-wrap{display:grid;place-items:center;padding:30px}
.login-card{width:min(410px,100%)}
.login-card h2{font-size:32px;margin:14px 0 8px}
.kicker{font-size:11px;font-weight:700;letter-spacing:.18em;color:#7fa9ff}
.login-card>p{color:var(--muted);font-size:13px;margin-bottom:22px}
.login-card label{display:grid;gap:8px;font-size:12px;font-weight:700;margin:17px 0}
.login-card input{border:1px solid #dce3ec;border-radius:10px;padding:14px;width:100%}
.primary{width:100%;border:0;border-radius:10px;padding:14px;background:#2262d4;color:#fff;font-weight:700;cursor:pointer;font-size:14px}
.mobile-brand{display:none}
.alert{border-radius:10px;padding:12px 14px;font-size:12px;margin-bottom:14px}
.alert-error{background:#fdecea;color:var(--red);border:1px solid #f6c7c1}
.alert-success{background:#e8f8ef;color:var(--green);border:1px solid #bfe9cf}
.lang-switch{position:fixed;top:16px;right:16px;z-index:30;display:flex;gap:6px;background:#fff;padding:5px;border-radius:10px;box-shadow:0 4px 14px rgba(0,0,0,.12)}
.lang-switch a{text-decoration:none;border:1px solid #dce3ec;background:#fff;padding:7px 12px;border-radius:8px;font-size:11px;font-weight:700;color:#536078}
.lang-switch a.active{background:#e9f0ff;border-color:#8fb0f7;color:#245fc9}
@media(max-width:760px){.login{grid-template-columns:1fr}.login-visual{display:none}.form-wrap{min-height:100vh}.mobile-brand{display:flex;margin-bottom:20px}.lang-switch{top:8px;right:8px}}