:root{--bg:#f5f7fb;--panel:#fff;--text:#102033;--muted:#667085;--border:#e4e8f0;--primary:#0b5394;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--text);background:radial-gradient(circle at 20% 0%,rgba(111,168,220,.16),transparent 28%),linear-gradient(135deg,#f7f9fc,#eef3f9)}
.login-shell{min-height:100vh;display:grid;place-items:center;padding:32px}.login-card{width:min(520px,100%);background:var(--panel);border:1px solid var(--border);border-radius:24px;box-shadow:0 24px 70px rgba(16,32,51,.12);padding:32px}
.lang-switch-row{display:flex;justify-content:flex-end;margin-bottom:10px}.lang-switch{font-size:12px;font-weight:800;letter-spacing:.06em;color:var(--muted);text-decoration:none;border:1px solid var(--border);border-radius:999px;padding:4px 11px;transition:color .15s,border-color .15s}.lang-switch:hover{color:var(--primary);border-color:#b8cce3}
.brand-row{display:flex;align-items:flex-start;gap:20px;margin:8px 0 42px}.brand-mark{flex:0 0 auto;width:92px;height:92px;border-radius:24px;display:grid;place-items:center;color:#fff;font-size:34px;font-weight:800;background:linear-gradient(135deg,#6fa8dc,#0b5394);line-height:1;overflow:hidden}.brand-op-logo{display:block;width:78%;height:auto;max-height:54%;object-fit:contain}
.brand-text{height:92px;display:flex;flex-direction:column;justify-content:space-between;padding:1px 0 0}.brand-eyebrow{text-transform:uppercase;letter-spacing:.24em;color:var(--primary);font-size:15px;line-height:1;font-weight:800}.brand-name{font-size:34px;font-weight:800;letter-spacing:-.035em;line-height:.92}.brand-sub{color:var(--muted);font-size:20px;line-height:1.05;font-weight:500}
form{display:grid;gap:16px}label{display:grid;gap:7px;color:#344054;font-size:13px;font-weight:700}input{width:100%;border:1px solid var(--border);border-radius:14px;padding:12px 13px;font:inherit;font-size:15px;color:var(--text);outline:none}
input:focus{border-color:#b8cce3;box-shadow:0 0 0 4px rgba(11,83,148,.09)}button{margin-top:4px;border:0;border-radius:999px;padding:12px 16px;background:var(--primary);color:#fff;font:inherit;font-weight:800;cursor:pointer}.error{background:#fff0f0;color:#a94a4a;border:1px solid #f0c9c9;border-radius:14px;padding:10px 12px;font-weight:700;font-size:13px;margin:0 0 16px}
@media(max-width:520px){.login-card{padding:28px}.brand-row{gap:16px;margin-bottom:34px}.brand-mark{width:78px;height:78px;border-radius:22px;font-size:30px}.brand-text{height:78px}.brand-eyebrow{font-size:12px}.brand-name{font-size:29px}.brand-sub{font-size:17px}}