:root{--primary:#e31e24;--dark:#071b2f;--accent:#95b2a0;--text:#162334;--muted:#68798d;--surface:#fff;--soft:#f4f7fa;--line:#e2e8ef;--radius:18px;--shadow:0 20px 50px rgba(7,27,47,.12)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Arial,sans-serif;color:var(--text);background:var(--soft)}button,input{font:inherit}.portal-shell{min-height:100vh}.login-view{min-height:100vh;display:grid;grid-template-columns:1.15fr .85fr}.login-brand-panel{position:relative;padding:48px;color:#fff;background:linear-gradient(140deg,rgba(7,27,47,.96),rgba(10,43,73,.85)),radial-gradient(circle at 75% 30%,rgba(227,30,36,.32),transparent 35%);display:flex;flex-direction:column;justify-content:space-between;background-size:cover;background-position:center}.brand-lockup{display:flex;align-items:center;gap:12px}.brand-lockup strong{display:block;font-size:1rem}.brand-lockup small{display:block;color:#b9c6d4;margin-top:3px}.brand-mark{width:42px;height:42px;border-radius:13px;background:var(--primary);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:0 8px 18px rgba(227,30,36,.25)}.brand-message{max-width:640px;padding-bottom:9vh}.brand-message span,.eyebrow{color:var(--primary);font-size:.75rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase}.brand-message h1{font-family:Georgia,serif;font-size:clamp(2.8rem,5vw,5.8rem);line-height:.98;margin:.65rem 0 1.2rem}.brand-message p{color:#d3dce6;font-size:1.1rem;max-width:570px}.login-form-panel{display:grid;place-items:center;padding:32px;background:#fff}.auth-card{width:min(430px,100%)}.auth-card h2,.modal-card h2{font-family:Georgia,serif;font-size:2.35rem;margin:.3rem 0 .65rem}.muted{color:var(--muted)}label{display:grid;gap:8px;margin:18px 0;font-weight:700;font-size:.9rem}input{min-height:50px;border:1px solid var(--line);border-radius:12px;padding:0 14px;outline:none;background:#fff}input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(227,30,36,.08)}.button{min-height:46px;border:0;border-radius:12px;padding:0 18px;font-weight:800;cursor:pointer}.button.primary{background:var(--primary);color:#fff;width:100%;box-shadow:0 10px 24px rgba(227,30,36,.2)}.button.ghost{background:#fff;border:1px solid var(--line);color:var(--dark)}.back-link{display:block;text-align:center;margin-top:20px;color:var(--muted);text-decoration:none}.mobile-brand{display:none}.message{margin:16px 0;padding:13px 15px;border-radius:12px;background:#eef6ff;color:#205c9f}.message.error{background:#fff0f1;color:#b4212d}.portal-header{height:76px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.header-actions{display:flex;align-items:center;gap:14px}.student-layout{display:grid;grid-template-columns:260px 1fr;min-height:calc(100vh - 76px)}.student-sidebar{background:var(--dark);color:#fff;padding:24px 18px}.profile-card{display:grid;justify-items:center;text-align:center;padding:20px 8px 28px;border-bottom:1px solid rgba(255,255,255,.09)}.profile-card small{color:#9fb0c0;margin-top:5px}.avatar{width:58px;height:58px;border-radius:18px;background:var(--primary);display:grid;place-items:center;font-weight:900;font-size:1.15rem;margin-bottom:12px}.student-sidebar nav{display:grid;gap:8px;padding-top:20px}.student-sidebar nav button{border:0;border-radius:12px;padding:13px 14px;text-align:left;background:transparent;color:#c2ced9;font-weight:700}.student-sidebar nav button.is-active{background:rgba(255,255,255,.1);color:#fff}.student-sidebar nav button:disabled{opacity:.45}.student-main{padding:40px;min-width:0}.welcome{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;margin-bottom:28px}.welcome h1{font-family:Georgia,serif;font-size:clamp(2.1rem,4vw,3.8rem);margin:.3rem 0 .55rem}.welcome p{color:var(--muted);max-width:720px}.bridge-status{padding:8px 12px;border-radius:999px;background:#fff3d9;color:#875a00;font-size:.8rem;font-weight:800;white-space:nowrap}.bridge-status.ready{background:#e9f8f0;color:#17714a}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.course-card{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 10px 30px rgba(7,27,47,.06);display:flex;flex-direction:column}.course-image{aspect-ratio:16/8.8;background:linear-gradient(135deg,#0c314f,#e31e24);overflow:hidden}.course-image img{width:100%;height:100%;object-fit:cover}.course-body{padding:20px;display:flex;flex-direction:column;gap:11px;flex:1}.course-body h3{margin:0;font-size:1.16rem}.course-body p{margin:0;color:var(--muted);font-size:.92rem;flex:1}.course-body .button{width:100%;background:var(--primary);color:#fff}.empty-state{background:#fff;border:1px dashed #ccd5df;border-radius:20px;padding:60px 24px;text-align:center;color:var(--muted)}.empty-state div{font-size:3rem}.modal-backdrop{position:fixed;inset:0;background:rgba(3,14,24,.76);display:grid;place-items:center;padding:20px;z-index:50}.modal-card{width:min(480px,100%);background:#fff;border-radius:22px;padding:28px;box-shadow:var(--shadow)}[hidden]{display:none!important}@media(max-width:1050px){.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.login-view{grid-template-columns:1fr 1fr}}@media(max-width:800px){.login-view{display:block}.login-brand-panel{display:none}.login-form-panel{min-height:100vh}.mobile-brand{display:flex;align-items:center;gap:10px;margin-bottom:42px}.student-layout{grid-template-columns:1fr}.student-sidebar{display:none}.student-main{padding:24px}.portal-header{padding:0 16px}.header-actions span{display:none}.course-grid{grid-template-columns:1fr}.welcome{display:block}.bridge-status{display:inline-block;margin-top:8px}}@media(max-width:480px){.student-main{padding:20px 14px}.portal-header .brand-lockup small{display:none}.auth-card h2,.modal-card h2{font-size:2rem}}