:root{--primary:#6366f1;--primary-hover:#4f46e5;--success:#22c55e;--danger:#ef4444;--warning:#f59e0b;--text:#1f2937;--text-light:#6b7280;--bg:#f9fafb;--card:#fff;--border:#e5e7eb;--shadow:0 4px 6px -1px #0000001a}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}.container{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.card{background:var(--card);box-shadow:var(--shadow);border-radius:16px;width:100%;max-width:400px;padding:40px}.logo{text-align:center;margin-bottom:32px}.logo h1{color:var(--primary);font-size:28px;font-weight:700}.logo p{color:var(--text-light);margin-top:8px;font-size:14px}.form{flex-direction:column;gap:20px;display:flex}.form-group{flex-direction:column;gap:6px;display:flex}.form-group label{color:var(--text);font-size:14px;font-weight:500}.form-group input{border:1px solid var(--border);border-radius:8px;padding:12px 16px;font-size:15px;transition:border-color .2s,box-shadow .2s}.form-group input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #6366f11a}.form-group input::placeholder{color:var(--text-light)}.btn{cursor:pointer;border:none;border-radius:8px;padding:12px 24px;font-size:15px;font-weight:500;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--bg);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--border)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{opacity:.9}.error{color:var(--danger);background:#fef2f2;border:1px solid #fecaca;border-radius:8px;padding:12px 16px;font-size:14px}.success{color:var(--success);background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:12px 16px;font-size:14px}.footer{text-align:center;color:var(--text-light);margin-top:24px;font-size:14px}.footer a{color:var(--primary);font-weight:500;text-decoration:none}.footer a:hover{text-decoration:underline}.oauth-header{text-align:center;margin-bottom:32px}.oauth-header h2{margin-bottom:8px;font-size:20px;font-weight:600}.oauth-header p{color:var(--text-light);font-size:14px}.oauth-client{background:var(--bg);border-radius:12px;margin-bottom:24px;padding:20px}.oauth-client h3{margin-bottom:4px;font-size:18px;font-weight:600}.oauth-client p{color:var(--text-light);font-size:13px}.oauth-permissions{margin-bottom:24px}.oauth-permissions h4{color:var(--text-light);margin-bottom:12px;font-size:14px;font-weight:500}.oauth-permissions ul{flex-direction:column;gap:8px;list-style:none;display:flex}.oauth-permissions li{align-items:center;gap:8px;font-size:14px;display:flex}.oauth-permissions li:before{content:"✓";color:var(--success);font-weight:600}.oauth-actions{gap:12px;display:flex}.oauth-actions .btn{flex:1}.loading{color:var(--text-light);justify-content:center;align-items:center;gap:8px;display:flex}.spinner{border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:20px;height:20px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}