.auth-screen{position:fixed;inset:0;z-index:100;display:grid;grid-template-columns:minmax(300px,1fr) minmax(340px,480px);background:#eef3ed;overflow:auto}.auth-screen.authenticated{display:none}.auth-brand{display:flex;flex-direction:column;justify-content:center;padding:clamp(40px,8vw,110px);background:linear-gradient(145deg,#082e27,#155846);color:#fff;position:relative;overflow:hidden}.auth-brand:after{content:'';position:absolute;width:440px;height:440px;border:80px solid rgba(132,190,50,.12);border-radius:50%;right:-230px;bottom:-210px}.auth-brand img{width:min(330px,80%);height:190px;object-fit:contain;background:#fff;border-radius:22px;padding:8px;z-index:1}.auth-brand>span{margin-top:26px;color:#bfe287;font-size:.8rem;font-weight:800;letter-spacing:.18em}.auth-brand h1{max-width:650px;margin:10px 0;font-size:clamp(2.1rem,4vw,4.5rem);line-height:1.05;z-index:1}.auth-brand p{max-width:620px;color:#c3d9d1;font-size:1rem;line-height:1.7;z-index:1}.auth-card{align-self:center;margin:32px;padding:32px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:0 24px 70px rgba(9,46,39,.14)}.auth-card>div small{color:var(--green2);font-size:.75rem;font-weight:800;letter-spacing:.13em}.auth-card h2{margin:6px 0 3px;color:var(--green);font-size:1.8rem}.auth-card>div p,.auth-note{margin:0 0 22px;color:var(--muted);font-size:.85rem}.auth-card>label{display:block;margin:14px 0;color:var(--green);font-size:.85rem;font-weight:700}.auth-card>label input{display:block;width:100%;margin-top:7px;padding:13px;border:1px solid var(--line);border-radius:10px;color:var(--ink);font-size:1rem}.auth-card fieldset{display:grid;grid-template-columns:1fr 1fr;gap:9px;border:0;padding:0;margin:20px 0}.auth-card legend{grid-column:1/-1;margin-bottom:8px;color:var(--green);font-size:.85rem;font-weight:700}.role-option{display:flex;align-items:center;gap:8px;padding:12px;border:1px solid var(--line);border-radius:12px;cursor:pointer}.role-option:has(input:checked){border-color:var(--green2);background:var(--lime-soft)}.role-option span{display:flex;flex-direction:column}.role-option b{font-size:.85rem;color:var(--green)}.role-option small{font-size:.7rem;color:var(--muted)}.auth-note{text-align:center!important;font-size:.72rem!important;margin:12px 0 0!important}.account-button{width:42px;height:42px;border:0;border-radius:50%;background:var(--green);color:#fff;font-weight:800}.account-menu{position:absolute;right:16px;top:61px;z-index:40;width:190px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:13px;box-shadow:var(--shadow)}.account-menu strong,.account-menu small{display:block}.account-menu strong{font-size:.9rem;color:var(--green)}.account-menu small{margin:2px 0 12px;color:var(--muted);font-size:.75rem}.account-menu button{width:100%;padding:9px;border:0;border-radius:8px;background:#fff0ec;color:#a33b25;font-weight:700;font-size:.8rem}.buyer-mode .seller-only{display:none}.app-credit{margin:40px 0 0;padding:40px 24px 105px;background:#082e27;color:#fff;text-align:center}.app-credit strong{display:block;font-size:1rem}.app-credit p{max-width:850px;margin:12px auto;color:#c6dbd4;font-size:.8rem;line-height:1.7}.app-credit small{color:#7d9c91;font-size:.75rem}
@media(min-width:900px){.app-shell{max-width:1180px;margin:0 auto;box-shadow:none}.app-header{padding:10px 32px}.screen{max-width:1100px;margin:auto;padding:36px 32px 50px}.bottom-nav{max-width:1180px}.featured-list,.market-list{grid-template-columns:repeat(3,1fr)}.cattle-card.featured:first-child{grid-column:auto}.history-list{grid-template-columns:repeat(3,1fr)}.research-history{grid-template-columns:1fr 1fr}.research-entry{min-height:230px}.fleet-list{grid-template-columns:1fr 1fr}.fleet-card:last-child{grid-column:1/-1}.welcome h1,.screen-heading h1{font-size:2rem}.hero-card{min-height:250px;padding:36px}.hero-card h2{font-size:2.6rem;max-width:470px}.hero-card p{font-size:1rem;max-width:540px}.about-app-card p,.national-reach p,.research-summary p,.research-entry p,.faq-list details p{font-size:.9rem}.about-app-card h2,.research-entry h2{font-size:1.1rem}.section-title h2{font-size:1.5rem}.form-card label{font-size:.85rem}.form-card input,.form-card select{font-size:1rem}.bottom-nav button{font-size:.75rem}.bottom-nav button>span{font-size:1.3rem}.app-credit{padding-bottom:110px}}
@media(max-width:760px){.auth-screen{grid-template-columns:1fr}.auth-brand{padding:26px 22px 20px;justify-content:flex-start}.auth-brand img{width:160px;height:105px;border-radius:14px}.auth-brand>span{margin-top:13px}.auth-brand h1{font-size:1.8rem}.auth-brand p{font-size:.82rem;margin-bottom:0}.auth-card{margin:0 14px 30px;padding:22px}.auth-card fieldset{grid-template-columns:1fr}.app-credit strong{font-size:.85rem}.app-credit p{font-size:.7rem}}
.auth-screen{display:none}.auth-screen.open{display:grid}.auth-close{position:fixed;right:18px;top:16px;z-index:102;width:42px;height:42px;border:1px solid rgba(255,255,255,.35);border-radius:50%;background:rgba(9,46,39,.72);color:#fff;font-size:1.5rem}.auth-card[hidden]{display:none}.text-button{border:0;background:none;padding:0;color:var(--green2);font-weight:800;text-decoration:underline}.auth-card fieldset{grid-template-columns:repeat(3,1fr)}#registerForm fieldset{grid-template-columns:1fr 1fr}.account-button.guest{width:auto;min-width:64px;padding:0 12px;border-radius:21px;font-size:.72rem}.account-button:not(.guest){width:42px;padding:0}.admin-only{display:none!important}.admin-mode .admin-only{display:flex!important}.admin-mode .seller-only{display:flex}.admin-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.admin-stats article{padding:17px;border:1px solid var(--line);border-radius:14px;background:#fff}.admin-stats small{display:block;color:var(--muted);font-size:.7rem}.admin-stats strong{display:block;margin-top:4px;color:var(--green);font-size:1.6rem}.admin-panel{margin-top:16px;padding:4px 16px 16px;border:1px solid var(--line);border-radius:16px;background:#fff}.admin-list{display:grid;gap:7px}.admin-list>article{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:11px;border-radius:10px;background:var(--bg)}.admin-list strong,.admin-list small{display:block}.admin-list strong{font-size:.8rem;color:var(--green)}.admin-list small{font-size:.65rem;color:var(--muted)}.admin-list button{border:0;border-radius:8px;padding:7px 9px;background:#fff0ec;color:#a33b25;font-size:.7rem;font-weight:700}@media(max-width:760px){.auth-card fieldset{grid-template-columns:1fr}.admin-stats{grid-template-columns:1fr 1fr}.admin-stats article:last-child{grid-column:1/-1}}
.auth-card>label select{display:block;width:100%;margin-top:7px;padding:13px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font-size:1rem}.field-hint{display:block;margin-top:6px;color:var(--muted);font-size:.7rem;font-weight:500;line-height:1.45}#buyerCategoryField[hidden]{display:none}