:root{--primary:#1E3A8A;--secondary:#10B981;--background:#F3F4F6;--text:#111827;--text-white:#FFFFFF;--accent:#3B82F6;--error:#EF4444;--warning:#F97316;--success:#22C55E;--card-radius:4px;--placeholder-color:#6B7280}*{box-sizing:border-box;font-family:system-ui,-apple-system,BlinkMacSystemFont,sans-serif}body{margin:0;background:var(--background);color:var(--text)}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center}.auth-card{width:360px;background:var(--text-white);padding:32px;border-radius:var(--card-radius);box-shadow:0 10px 25px rgba(0,0,0,.08)}.alert-error,.alert-success{padding:10px 12px;margin-bottom:16px;font-size:14px}.auth-card img{display:block;margin:0 auto;width:250px}.form-group{margin-bottom:16px}.form-group input{width:100%;padding:12px 14px;border:1px solid #d1d5db;border-radius:var(--card-radius);font-size:14px;transition:border-color .2s,box-shadow .2s}.form-group input:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 2px rgba(59,130,246,.2)}.form-group input::placeholder{color:#9ca3af}.form-group input[type=checkbox]{width:auto;margin-right:8px}button{width:100%;padding:12px;background:var(--primary);color:var(--text-white);border:none;border-radius:var(--card-radius);font-size:15px;font-weight:600;cursor:pointer;transition:background .2s,transform .1s}button:hover{background:var(--accent)}button:active{transform:scale(.98)}.alert-error{background:rgba(239,68,68,.1);color:var(--error);border-left:4px solid var(--error)}.alert-error ul{margin:0;padding-left:20px}.alert-success{background:rgba(68,239,74,.1);color:var(--success);border-left:4px solid var(--success)}.auth-footer{margin-top:16px;text-align:center}.auth-footer a{color:var(--accent);text-decoration:none;font-size:14px}.auth-footer a:hover{text-decoration:underline}button:disabled{background:#9ca3af;cursor:not-allowed;opacity:.8}